EPA Registration Division Contact: Susan Stanton,<PHONE_NUMBER>

1. E.I. du Pont de Nemours and Company

PP No. 9F7523

EPA has received a pesticide petition (PP No. 9F7523) from Interregional
Research Project Number 4 (IR-4), IR-4 Headquarters, Rutgers, The State
University of New Jersey

500 College Road East, Suite 201-W, Princeton, NJ 08540-6635, proposing
pursuant to section 408 (d) of the Federal Food, Drug, and Cosmetic Act,
21 U.S.C. 346a (d), to amend 40 CFR Part 180.439 by establishing a
tolerance for residues of the herbicide thifensulfuron methyl
{Methyl-3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) amino] carbonyl]
amino] sulfonyl] -2-thiophenecarboxylate} in or on the following raw
agricultural commodities: Safflower (seed) at 0.05 ppm. EPA has
determined that the petition contains data or information regarding the
elements set forth in section 408 (d) (2) of the FFDCA; however, EPA has
not fully evaluated the sufficiency of the submitted data at this time
or whether the data supports granting of the petition. Additional data
may be needed before EPA rules on the petition.

A. Residue Chemistry

1a. Plant Metabolism

The qualitative nature of the residues of thifensulfuron methyl in
plants is adequately understood, therefore no additional metabolism data
are required to support the proposed tolerance on safflower seed. Three
plant metabolism studies – in wheat, corn, and soybeans - were
conducted. Crops were treated with [thiophene-2-14C] and
[triazine-2-14C] thifensulfuron methyl via direct foliage application.
[14C] Thifensulfuron methyl was rapidly metabolized in all three crops,
and the nature of the metabolites was essentially the same regardless of
the crop. In all three crops, metabolism involved cleavage of the urea
bridge, metabolism (O-demethylation) of the methoxy group on the
triazine ring, and hydrolysis of the methyl ester group on the thiophene
ring. Minor differences in the formation and decline of short-lived
intermediates were observed, however these differences were not
environmentally significant because of the low levels of these
intermediate metabolites in the crops.

Metabolism studies conducted with 14C-thifensulfuron methyl on wheat (at
a rate of approximately 28-30 g ai/acre) under field conditions showed
no significant residues of thifensulfuron methyl or its degradation
products (i.e., all less than 0.01 ppm) in wheat grain at maturity.
Mature straw total residues were 0.45 to 0.80 ppm for the triazine and
thiophene-labeled tests, respectively.  Metabolites in wheat straw
included thifensulfuron methyl, thifensulfuron acid, O-demethyl
thifensulfuron methyl, 2-ester-3-sulfonamide, 2-acid-3-sulfonamide,
triazine urea, triazine amine, and O-demethyl triazine amine. Complete
breakdown of [14C]thifensulfuron methyl and/or metabolites resulting in
re-incorporation of the radiolabel into natural plant constituents
(e.g., sugars) was also observed. No single metabolite was greater than
0.06 ppm in the mature wheat straw.

Metabolism studies with [14C]thifensulfuron methyl were conducted (at a
rate of approximately 14 g ai/acre) in field grown corn. There were no
detectable residues of thifensulfuron methyl or its transformation
products in corn grain (i.e., all less than 0.01 ppm) or foliage (i.e.,
all less than 0.02 ppm) at maturity.  Analysis of non-mature foliar
samples showed rapid and extensive metabolism of thifensulfuron methyl.
Among the residues detected were thifensulfuron methyl,
2-acid-3-sulfonamide, triazine urea, triazine amine, O-demethyl triazine
urea, and O-demethyl triazine amine. Thifensulfuron acid and
2-ester-3-sulfonamide, which are metabolites seen in other plant
metabolism studies (wheat and soybean), were not detected, but were most
likely transient intermediates (both plausible precursors to
2-acid-3-sulfonamide) in the corn plants.

Metabolism studies were conducted with soybeans under greenhouse
conditions (at rates of 3 and 6 g ai per acre). There were no detectable
residues (i.e., all less than 0.01 ppm) in the beans or pods at either
rate at final harvest.  Analysis of non-mature foliar samples showed
extensive metabolism of thifensulfuron methyl.  Residues detected
included thifensulfuron methyl, thifensulfuron acid,
2-ester-3-sulfonamide, 2-acid-3-sulfonamide, triazine amine, and
O-demethyl triazine amine.

1b. Confined Rotational Crop Studies

Two different crop rotation scenarios were investigated, one involving a
bare ground application, the other with a cover crop (wheat). No
significant difference in metabolic profile was observed in the rotated
crops (beets, peas, and sunflowers) under either scenario. No
thifensulfuron methyl (i.e., <0.01 mg/kg) was detected in any food or
feed item from any of the rotated crops.

A confined greenhouse crop rotation study (following application to bare
soil) was conducted with thiophene-14C thifensulfuron methyl by planting
beets, peas, and sunflowers at either a 30 or 120 day
treatment-to-planting interval. The application rate used was 35 - 38 g
ai/acre. Total soil residue levels at planting were low, 0.01 – 0.02
mg/kg for both the 30- and 120-day aging periods. Levels of
thifensulfuron methyl at planting accounted for <0.01 mg/kg at the end
of each aging period. There were no significant residues (i.e., all less
than 0.005 ppm) in food items (beet root, peas, sunflower seeds) in
crops planted 30 or 120 days following soil treatment. There were minor
detectable residues (0.02 to 0.05ppm) in animal feed items (beet foliage
and sunflower foliage). Thifensulfuron methyl was only identified (<0.01
ppm) in sunflower foliage 73 days after treating the soil; other minor
components observed were polar.

A confined greenhouse crop rotation study (following triazine-14C
thifensulfuron methyl treated wheat) was conducted using beet root,
peas, pea pods, and sunflower as following crops. The study used an
application rate of 15 g ai/acre, and a 45 or 75 day
treatment-to-planting interval. At the end of the 45- and 75-day aging
periods (after incorporation of the cover crop), soil residue levels
were 0.01 – 0.02 mg thifensulfuron methyl equivalents per kg of soil.
Thifensulfuron methyl was not detected in the soil after 45 days;
triazine urea was the principal soil component at the 45- and 75-day
planting interval. There were no substantial residues (i.e., all less
than 0.01 ppm) in food items (beet root, peas, pea pods, sunflower
(seeds and heads) in crops planted 45 or 75 days following treated wheat
incorporation into the soil.  There were minor detectable residues in
animal feed items.  Sunflower and pea foliage contained 0.04 – 0.05
ppm and 0.01 - 0.02 ppm for the 45 and 75 day planting, respectively.
Small amounts of triazine amine (< 0.03 ppm), triazine urea, and
O-demethyl triazine amine were identified in these fractions.

2. Analytical Methods

Samples were analyzed for residues of thifensulfuron-methyl using Liquid
Chromatography.

Summarizing briefly for the safflower seed and meal analyses,
thifensulfuron-methyl residues were extracted from the samples by
soaking ground tissue in sodium bicarbonate for a minimum of 2 hr, then
adjusting the pH to 3.5. The mixture was homogenized in dichloromethane.
The organic solvent was isolated and extracted three times with sodium
bicarbonate. The resulting aqueous extracts were combined, rinsed with
hexane and adjusted to pH 3.0 – 3.5 with HCl. This acidic solution was
further cleaned by retention on a C18 solid phase extraction cartridge
with a rinse of water followed by a rinse with methanolic acetic acid in
water, and finally, eluted with methanolic acetic acid in water. The
analyte was then partitioned in dichloromethane, and the organic layer
was dried and reconstituted with a portion of dichloromethane prior to
loading onto a CN solid phase extraction cartridge. The analyte was
eluted with ethyl acetate in dichloromethane. The eluate was dried and
reconstituted in n-hexane-isopropyl alcohol prior to analysis by
high-performance liquid chromatography with photo-conductivity
detection. The method described above was used for the safflower oil
with modifications. Most notably, both the oil and the analyte are very
soluble in dichloromethane, so soaking with sodium bicarbonate was not
required. As a result, the extraction and isolation procedure for oil
was simplified by initiating the isolation with the back-extraction from
dichloromethane into sodium bicarbonate and following the procedure from
that point.

The lowest level of method validation (LLMV) for each matrix in this
study, i.e., safflower seed, meal and oil, was 0.05 ppm of
thifensulfuron-methyl. The limits of quantitation (LOQ) for the method
for safflower seed was 0.027 ppm of thifensulfuron-methyl. The estimated
LOQ for meal and oil were calculated at 0.039 ppm, and 0.0068 ppm of
thifensulfuron-methyl, respectively. The limits of detection (LOD) for
the method for safflower seed was 0.0090 ppm of thifensulfuron-methyl.
The estimated LOD for meal and oil were 0.013 ppm, and 0.0023 ppm of
thifensulfuron-methyl, respectively.

All samples were analyzed between 1 and 6 days from extraction with the
exception of the freezer storage set for safflower meal which was
analyzed 23 days after extraction.

3. Magnitude of Residue

Safflower

Field tests were conducted on safflower (seed, meal, and oil). The
maximum residue in seed following an application of 0.0176-0.0187 lb
ai/A and a pre-harvest interval (PHI) of 36-81 days was <0.05 ppm. The
maximum residue in meal and oil following an application of 0.0186 lb
ai/A and a pre-harvest interval (PHI) of 81 days was <0.05 ppm.

B. Toxicological Profile

1. Acute Toxicity

Based on EPA criteria, technical thifensulfuron methyl is in acute
toxicity Category IV for oral and inhalation routes of exposure, and for
eye irritation. Thifensulfuron methyl is in acute toxicity Category III
for the dermal route of exposure and for dermal irritation. It is not a
skin sensitizer.

	Acute oral toxicity in rats			LD50 > 5000 mg/kg

	Acute dermal toxicity in rabbits		LD50 > 2000 mg/kg

	Acute inhalation toxicity in rats		LC50 > 7.9 mg/L

	Primary eye irritation in rabbits		Moderate irritation

	Primary dermal irritation in rabbits		Slight irritation

	Dermal sensitization in guinea pigs		Non-sensitizer

2. Genotoxicity

Technical thifensulfuron methyl has shown no genotoxic or mutagenic
activity in the following  in vitro and in vivo tests :

	In vitro Mutagenicity Ames Assay		Negative

	In vitro Mutagenicity CHO/HPRT Assay	Negative

In vitro Unscheduled DNA Synthesis		Negative

	In vivo Micronuclei Induction (Mouse) 	Negative

	In vivo Bone Marrow Chromosome

	  Aberrations (Rat)				Negative

Thifensulfuron methyl was not mutagenic, with or without metabolic
activation, in an in vitro bacterial gene mutation assay using
Salmonella typhimurium. Thifensulfuron methyl also was not mutagenic in
the in vitro CHO/HPRT assay at concentrations up to 2712 mg/L (in
Chinese hamster ovary cells).  In cultured primary rat hepatocytes,
thifensulfuron methyl was negative for the induction of unscheduled DNA
synthesis up to 2712 mg/L.

An in vivo bone marrow micronucleus test was conducted in mice. There
was no increase in micronucleated polychromatic erythrocytes (MNPCE)
frequency at a dose of 5000 mg/kg. An in vivo chromosome aberration
study was conducted on rats.  This included the assessment of chromosome
aberrations by metaphase analysis in bone marrow of male and female
rats.

Thifensulfuron methyl did not induce cytogenic damage in bone marrow
cells at a dose of 5000 mg/kg.

3. Reproductive and Developmental Toxicity

The results of a series of studies indicated that there were no
reproductive, developmental or teratogenic hazards associated with the
use of thifensulfuron methyl. In a 1-generation reproduction study in
rats, the suggested NOEL was 7500 ppm (559 mg/kg/day males, 697
mg/kg/day females). In a rat multigeneration reproduction study, the
NOEL for reproductive effects of thifensulfuron methyl in adult rats and
their offspring was 2500 ppm, the highest dietary level tested.  This
level was based on the absence of significant compound related effects
observed in this study, and is equivalent to 175-180 mg/kg/day in adult
male rats and 212-244 mg/kg/day in adult female rats.  There were no
effects on fertility, lactation, litter size, or pup survival.
Thifensulfuron methyl is not considered a reproductive toxin.

In studies conducted to evaluate developmental toxicity potential,
thifensulfuron methyl was neither teratogenic nor uniquely toxic to the
conceptus (i.e., not considered a developmental toxin). In the rat
study, there was no evidence of maternal toxicity at the highest dose
tested (800 mg/kg/day). Therefore, the maternal NOAEL is 725 mg/kg/day
(analytically determined dose). The developmental NOAEL for rats was
considered to be the 200 mg/kg/day dose level (analytically determined
and set by EPA as 159 mg/kg/day) based on the decrease in mean fetal
body weight and an increase in the incidence of small renal papillae. In
the rabbit developmental toxicity study, there was slight maternal
toxicity (decreased body weight gain) at a dose of 650 mg/kg/day.  No
significant indications of maternal toxicity were evident at the
mid-dose level (200 mg/kg/day).  No compound-related effects on fetal
weights or the incidences of malformations or variations were seen at
any dose. The maternal NOEL was the 200 mg/kg/day dose (analytically
determined and set by EPA at 158 mg/kg/day) and the developmental NOEL
was the 650 mg/kg/day dose level (analytically determined and set by EPA
at 511 mg/kg/day) for rabbits dosed with thifensulfuron methyl by gavage
on gestation days 7-19.

4. Subchronic Toxicity

The most sensitive species to subchronic exposure of thifensulfuron
methyl was the rat. The NOEL for thifensulfuron methyl was 100 ppm (7
and 9 mg/kg/day) for male and female rats, respectively, in the 90-day
dietary study. This was based on the decreased body weight, food
efficiency, and changes in clinical chemistry in the 2500 and 7500 ppm
groups. For mice in both the 4-week range-finding and the 90-day
studies, the NOEL for male and female mice under the conditions of this
study was 7500 ppm. This was based on the lack of compound-related
effects at the highest concentration, equivalent to 1427 mg/kg/day in
male mice and 2287 mg/kg/day in female mice. EPA concluded the NOEL for
subchronic (90-day dietary) exposure in dogs was 1500 and 7500 ppm in
males and females (equivalent to 37.5 mg/kg/day and 159.7 mg/kg/day)
respectively. These levels were based on lower body weight and adrenal
weight in males, and a lack of adverse effects in females at 7500 ppm,
the highest concentration tested. No compound-related pathologic lesions
were observed and no target organ was identified in all of the above
tests.

5. Chronic Toxicity/Oncogenicity

The NOEL for chronic (2-year dietary) exposure in rats was 500 ppm (20
mg/kg/day for males and 26 mg/kg/day for females), based on body weight
effects at 2500 ppm. Thifensulfuron methyl was not an oncogen in rats.

In an 18-month study in mice, conducted at dietary levels of 0, 25, 750,
and 7500 ppm, EPA concluded the NOEL was 25 ppm (4.3 mg/kg/day) based on
decreased body weight gains in female mice at 750 ppm and above, and in
male mice at 7500 ppm. No other effects were observed in the study.
Thifensulfuron methyl was not an oncogen in mice.

In a 1- year feeding study in dogs, the NOEL of thifensulfuron methyl
was 750 ppm in male and female beagle dogs (equivalent to approximately
18.75 mg/kg/day), based on decreased body weights, body weight gains,
and food efficiency in females and increased liver weights in males, all
at 7500 ppm.  The liver weight effects in males in the absence of other
effects including histopathology may be adaptive rather than adverse.

6. Animal Metabolism

The metabolic pathway for thifensulfuron methyl in animals is
understood. This metabolic pathway involves hydrolysis of the urea
bridge, deesterification, and O-demethylation reactions. There was
minimal potential for retention or accumulation of thifensulfuron methyl
or its metabolites in animal tissues. Low levels of thifensulfuron
methyl residues were found in goat tissues and insignificant tissue
levels (i.e., less than 0.1% of the dose) were observed in the rat.

Rats were dosed with two radioactive forms of thifensulfuron methyl
(14C-thiophene and 14C-triazine).  In the thiophene study, the
thifensulfuron methyl was primarily excreted unchanged by rats following
low dose (20 mg/kg), low dose following 21 days dietary preconditioning
(100 ppm), and high dose (2,000 mg/kg) routines. Approximately 70% to
85% of the excreted radioactivity was thifensulfuron methyl. The urine
was the primary excretion route and contained 71% to 92% of the original
dose from the low and low-dose preconditioned groups. Combined urinary
and fecal elimination was rapid, with over 90% of excretion completed by
48 hours after dosing for both low-dose groups. The high-dose group peak
elimination was delayed by approximately 24 hours compared to the other
dose levels. Tissue radioactivity levels were low at sacrifice (96 hours
after dosing) for all dosing groups, with no enhanced retention of
radioactivity by any organ or tissue. Thifensulfuron methyl was the
primary radiolabeled excretion product with thifensulfuron acid,
2-acid-3-sulfonamide, 2-ester-3-sulfonamide, and thiophene sulfonamide
identified as minor metabolites.

In the triazine study, thifensulfuron methyl was excreted primarily
unchanged in urine and feces by male and female rats after
administration of approximately 2000 mg/kg by oral gavage. Urine was the
primary route of excretion, averaging 58.7% of the dose in males and
75.5% in females. Fecal excretion of the dose averaged 21.2% for the
male rats and 15.8% for the females. Greater than 50% of the dose was
excreted by 48 hours post-dosing. Essentially no elimination of the dose
as radiolabeled CO2 or volatile compounds occurred. These results are
similar to those reported on the thiophene-labeled thifensulfuron
methyl. Intact thifensulfuron methyl was identified by mass spectrometry
as the principal radioactive compound in urine (> 94%) and feces (>
77%). Three minor metabolites, each less than 3% of the dose, were
identified in urine and feces by chromatographic retention comparison;
they were thifensulfuron acid, O-demethyl thifensulfuron methyl, and
triazine amine.

Results from a metabolism study with two radioactive forms of
thifensulfuron methyl (14C-triazine and 14C-thiophene) in lactating
goats show that most of the dosed radioactivity was rapidly excreted
(primarily in the urine) and recovered as intact thifensulfuron methyl.
Radioactivity in the milk (0.1 - 0.2 ppm) was comprised of mostly intact
thifensulfuron methyl and a small amount of triazine amine and several
very minor metabolites. Radioactivity did not accumulate in the tissues.
After absorption, the major metabolic pathway involved cleavage of the
carboxyl ester linkage, resulting in the formation of thifensulfuron
acid.  Oxidative O-demethylation occurred to a limited extent.

There were no significant levels of unique plant metabolites of
thifensulfuron methyl found in food or feed products at crop maturity.
Hence, toxicity testing of other degradation products of thifensulfuron
methyl is not needed.

7. Metabolite Toxicology

There is no evidence that the metabolites of thifensulfuron methyl, as
identified in either the plant or animal metabolism studies, are of any
toxicological significance.

8. Endocrine Effects

No special studies investigating potential estrogenic or other endocrine
effects of thifensulfuron methyl have been conducted. However, the
standard battery of required toxicology studies has been completed.
These include an evaluation of the potential effects on reproduction and
development, and an evaluation of the pathology of the endocrine organs
following repeated or long-term exposure to doses that far exceed likely
human exposures. Based on these studies, there is no evidence to suggest
that thifensulfuron methyl has an adverse effect on the endocrine
system.

C. Aggregate Exposure

Thifensulfuron methyl is the active ingredient in a number of DuPont
herbicides, with new tolerances being proposed in/on barley hay, wheat
forage and hay, and oat forage and hay, to support the currently
registered use of this active ingredient on these crops. There are no
residential uses for any thifensulfuron methyl containing herbicides.

1. Dietary Exposure

The chronic reference dose (cRfD) of 0.2 mg/kg/day is based on the NOEL
of 20 mg/kg/day from a two-year rat feeding study and a 100X safety
factor.  The acute reference dose (aRfD) of 1.59 mg/kg/day is based the
NOEL of 159 mg/kg/day from a rat developmental study and a 100X safety
factor.

The residue of concern, as listed at 40 CFR 180.439, is parent
thifensulfuron methyl only.

2. Food

a. Chronic Dietary Exposure Assessment

Dietary exposure, resulting from the current and proposed uses of
thifensulfuron methyl on barley, canola, cotton, flax, field corn, oats,
soybeans, sorghum, rice, wheat, and safflower is well within the
acceptable limits for all sectors of the population, as predicted by
both the Chronic and Acute Modules of the Dietary Exposure Evaluation
Model with Food Commodity Intake Database (DEEM-FCIDTM, Exponent, Inc.,
2003 Version 2.14).  The percentage or proportion of a crop that is
treated can have a significant effect on the exposure profile.  In this
case, it was assumed for all crops that 100% was treated with
thifensulfuron methyl.  Based on a comparison with the actual use
profiles for herbicides containing thifensulfuron methyl, this is an
extremely conservative estimate.

The predicted chronic exposure for the U.S. population was 0.000226
mg/kg bw/day.  The population subgroup with the highest predicted level
of chronic exposure was the children 3-5 years subgroup with an exposure
of 0.000517 mg/kg bw/day.  Based on a chronic NOEL of 20 mg/kg bw/day
and a 100-fold safety factor, the cRfD would be 0.2 mg/kg bw/day.  For
both the U.S. population and the children 3-5 years subgroup, the
predicted exposure is equivalent to less than 1% of the cRfD.  Since the
predicted exposures, expressed as percentages of the cRfD, are well
below 100%, there is reasonable certainty that no chronic effects would
result from dietary exposure to thifensulfuron methyl.

b. Acute Dietary Exposure

The predicted acute exposure for the U.S. population subgroup was
0.000574 mg/kg bw/day (95th percentile).  The population subgroup with
the highest predicted level of acute exposure was the infants subgroup
with an exposure of 0.001062 mg/kg bw/day (95th percentile).  Based on
an acute NOEL of 159 mg/kg bw/day and a 100-fold safety factor, the aRfD
would be 1.59 mg/kg bw/day.  For both the U.S. population and the
infants subgroup the predicted exposure (at the 95th percentile) is
equivalent to less than 1% of the aRfD.  Since the predicted exposures,
expressed as percentages of the aRfD, are well below 100%, there is
reasonable certainty that no acute effects would result from dietary
exposure to thifensulfuron methyl.

3. Drinking Water

Surface water exposure was estimated using the Generic Expected
Environmental Concentration (GENEEC) model, and groundwater exposures
were estimated using SCI-GROW.  There was little change from the
food-only dietary risk assessments when the higher surface water
concentrations were included in the acute and chronic dietary risk
assessments.  When the estimated maximum concentration of thifensulfuron
methyl in surface water, 1.2 parts per billion (ppb), was included in
the acute dietary assessment as a point estimate the predicted exposure
at the 95th percentile for the general U.S. population was 0.000608
mg/kg/day which corresponds to less than 1% of the aRfD; the most
sensitive subpopulation, infants, had an estimated exposure at the 95th
percentile of 0.001187 mg/kg/day, less than 1% of the aRfD.
Therefore, one can conclude with reasonable certainty that residues of
thifensulfuron methyl in drinking water do not contribute significantly
to the aggregate acute human health risk.

When the GENEEC 56-day estimated environmental concentration of 0.65 ppb
thifensulfuron methyl in surface water was included in the chronic
dietary assessment, the predicted exposure for the general population
was 0.000239 mg/kg/day, less than 1% of the cRfD; the most sensitive
subpopulation, children 3-5 years, had an estimated exposure of 0.000536
mg/kg/day, less than 1% of the cRfD.  Thus, it can be concluded that the
chronic dietary exposure of thifensulfuron methyl, including the
contribution of drinking water, clearly meets the standard of reasonable
certainty of no harm.

4. Non-Dietary Exposure

Thifensulfuron methyl is not registered for any use which could result
in non-occupational or non-dietary exposure to the general population.

D. Cumulative Effects

Thifensulfuron methyl belongs to the sulfonylurea class of crop
protection chemicals. Other structurally similar compounds in this class
are registered as herbicides. However, the herbicidal activity of
sulfonylureas is due to the inhibition of acetolactate synthase (ALS),
an enzyme found only in plants. This enzyme is part of the biosynthesis
pathway leading to the formation of branched chain amino acids. Animals
lack ALS and this biosynthetic pathway. This lack of ALS contributes to
the relatively low toxicity of sulfonylurea herbicides in animals. There
is no reliable information that would indicate or suggest that
thifensulfuron methyl has any toxic effects on mammals that would be
cumulative with those of any other chemical.

E. Safety Determination

Based on data and information submitted by DuPont, EPA previously
determined that the establishment of tolerances of thifensulfuron methyl
on the barley, oats, wheat, field corn, cotton, canola, flax, soybean,
rice, and sorghum raw agricultural commodities would protect the public
health, including the health of infants and children.

Establishment of a new tolerance for thifensulfuron methyl on Safflower
at 0.05 ppm will also not adversely impact public health.

1. U.S. Population

Based on the completeness and reliability of the toxicology database,
and using the conservative assumptions presented earlier, EPA has
established a cRfD of 0.2 mg/kg/day. This was based on the NOEL for the
chronic rat study, 20 mg/kg/day, and a 100-fold safety factor. It has
been concluded that the chronic dietary exposure was less than 1% of the
cRfD.  Generally, exposures below 100% of the cRfD are of no concern
because it represents the level at or below which daily dietary exposure
over a lifetime will not pose appreciable risk to human health. Thus,
there is reasonable certainty that no harm will result from chronic
exposures to thifensulfuron methyl residues.

2. Infants and Children

In assessing the potential for additional sensitivity of infants and
children to residues of thifensulfuron methyl, data from the previously
discussed developmental and multigeneration reproductive toxicity
studies were considered.

Developmental studies are designed to evaluate adverse effects on the
developing organism resulting from pesticide exposure during pre-natal
development. Reproduction studies provide information relating to
reproductive and other effects on adults and offspring from pre-natal
and post-natal exposures to the pesticide. The studies with
thifensulfuron methyl demonstrated no evidence of developmental toxicity
at exposures below those causing maternal toxicity.  This indicates that
developing animals are not more sensitive to the effects of
thifensulfuron methyl administration than adults.

FFDCA section 408 provides that EPA may apply an additional uncertainty
factor for infants and children in the case of threshold effects to
account for pre- and post-natal toxicity and the completeness of the
database.  Based on current toxicological data requirements, the
database for thifensulfuron methyl relative to pre- and post-natal
effects for children is complete.  In addition, the NOEL of 20 mg/kg/day
in the chronic rat study (and upon which the RfD is based) is much lower
than the NOELs defined in the reproduction and developmental toxicology
studies.  The sub-population with the highest level of chronic exposure
was Children 3-5 years, for whom exposure was less than 1% of the cRfD.
Based on these conservative analyses, there is reasonable certainty that
no harm will result to infants and children from aggregate exposures to
thifensulfuron methyl.

F. International Tolerances

The maximum residue limit (MRL) in Canada for thifensulfuron methyl on
canola is 0.1 ppm. The MRLs in the EU (European Union) are 0.05 ppm for
barley, field corn (maize), oats, soybeans (soya bean), wheat, canola
(rapeseed), cotton seed, flax (other oilseeds), rice, sunflowers, and
sorghum.

Pesticide Petition for Tolerances for		AGRICULTURAL COMMODITIES

Thifensulfuron Methyl		Safflower

E.I. du Pont de Nemours and Company

Wilmington, DE 19880-0038

December 2008


[Federal Register: April 11, 2006 (Volume 71, Number 69)]
[Notices]
[Page 18304-18305]
[DOCID:fr11ap06-63]

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DEPARTMENT OF ENERGY

Federal Energy Regulatory Commission

[Docket No. ER02-1656-000]

California Independent System Operator Corporation; Notice
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April 3, 2006.
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on reh'g, 111 FERC ] 61,021 (2005); see also Notice That The Commission
Secretary Will End Duplicate Paper Service of Commission Issuances,
Docket No. RM04-9-000 (June 17, 2005).
    Participants in the above-captioned proceeding have expressed to
Commission staff an interest in electronic service. Accordingly, to
facilitate the electronic service of filings among participants in this
proceeding, the Commission will establish eService for this docket
effective May 8, 2006.
    To participate in eService for this proceeding, participants must
follow the instructions set out in the attachment to this Notice and
submit the information requested by April 17, 2006. Participation in
eService for this proceeding is not mandatory, but participants are
encouraged to take advantage of this opportunity to serve and receive
service of documents in a prompt and cost-effective manner.

Magalie R. Salas,
Secretary.

Attachment--Use of Eservice for ER02-1656-000

    Participants who will use eService in this proceeding must meet the
following two requirements by April 17, 2006.
    1. eRegister using FERC Online (the following link may be used
http://www.ferc.gov/docs-filing/eregistration.asp).    2. Send an e-Mail to<EMAIL_ADDRESS>that includes the

following information:
    a. The e-Mail subject line `ER02-1656-eService.'
    b. In the e-Mail body, include the e-Mail address with which the
participant eRegistered with FERC Online and the name of the
organization on whose behalf they previously intervened in the
proceeding.
    On May 8, 2006, the Commission will issue a notice announcing the
establishment of the WebService list for ER02-1656-000 based on the
information received by participants in this proceeding. Thereafter, a
participant serving a document by e-mail should:
    1. Retrieve and download the Web Service List for ER02-1656-000
using the participant's eRegistered FERC Online e-mail address and
password (the following link may be used http://www.ferc.gov/docs-filing/eservice.asp
). The participant can specify the type of e-mail

address as `E-mail' and use the `Download List' function on the Web
Service List page.
    2. After opening the saved list using any text editor, the
participant may copy the downloaded list to their clipboard, paste it
into the 'To:' line of the e-mail editor and enter an appropriate
subject and e-mail body. To avoid e-mail delivery problems to companies
who bar attachments or limit attachment size, a participant using
eService should include in the e-mail body the link to the document in
the FERC eLibrary system. The participant will receive this link to the
document by

email from the FERC eFiling system when the particular document is
accepted for filing by FERC.
    For more information about eService, eRegistration, or eFiling
contact<EMAIL_ADDRESS>or call<PHONE_NUMBER> and include a
current telephone number and e-mail address.
 [FR Doc. E6-5288 Filed 4-10-06; 8:45 am]

BILLING CODE 6717-01-P


[Federal Register Volume 78, Number 122 (Tuesday, June 25, 2013)]
[Notices]
[Page 38093]
[FR Doc No: 2013-15138]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

Thirteenth Meeting: RTCA Special Committee 225, Rechargeable
Lithium Battery and Battery Systems--Small and Medium Size

AGENCY: Federal Aviation Administration (FAA), U.S. Department of
Transportation (DOT).

ACTION: Meeting Notice of RTCA Special Committee 225, Rechargeable
Lithium Battery and Battery Systems--Small and Medium Size.

-----------------------------------------------------------------------

SUMMARY: The FAA is issuing this notice to advise the public of the
twelfth meeting of the RTCA Special Committee 225, Rechargeable Lithium
Battery and Battery Systems--Small and Medium Size.

DATES: The meeting will be held July 16-18, 2013, from 9:00 a.m.-5:00
p.m.

ADDRESSES: The meeting will be held at the RTCA Headquarters, 1150 18th
Street NW., Suite 910, Washington, DC 20036.

FOR FURTHER INFORMATION CONTACT: The RTCA Secretariat, 1150 18th Street
NW., Suite 910, Washington, DC 20036, or by telephone at (202) 330-
0662/(202) 833-9339, fax<PHONE_NUMBER>, or Web site at http://www.rtca.org. In addition, Jennifer Iversen may be contacted directly
at email<EMAIL_ADDRESS>
SUPPLEMENTARY INFORMATION: Pursuant to section 10(a)(2) of the Federal
Advisory Committee Act (Pub. L. 92-463, 5 U.S.C., App.), notice is
hereby given for a meeting of Special Committee 225. The agenda will
include the following:

Tuesday, July 16, 2013

     Introductions and administrative items.
     Review agenda.
     Review and approval of summary from last Plenary meeting.
     Status of TOR and discussion of next steps.
     Li-ion Current Events.
     Working Group review and disposition FRAC comments.
     Review action items.

Wednesday, July 17, 2013

     Review agenda, other actions.
     Working Group review and disposition FRAC comments.

Thursday, July 18, 2013

     Review agenda, other actions.
     Review schedule for upcoming Plenaries (as needed),
working group meetings, and document preparation.
     Review working group disposition of FRAC comments.
     Create plan and schedule for updating DO-311 per updated
TOR.
     Establish agenda for the next Plenary.
     Adjourn.
    Attendance is open to the interested public but limited to space
availability. With the approval of the chairman, members of the public
may present oral statements at the meeting.
    Persons wishing to present statements or obtain information should
contact the person listed in the FOR FURTHER INFORMATION CONTACT
section. Members of the public may present a written statement to the
committee at any time.

    Issued in Washington, DC, on June 12, 2013.
Paige Williams,
Management Analyst, NextGen, Business Operations Group, Federal
Aviation Administration.
[FR Doc. 2013-15138 Filed 6-24-13; 8:45 am]
BILLING CODE 4910-13-P


15. In section 1910.1026, paragraphs (g)(1) introductory text and
(g)(2) are revised to read as follows:

Sec.  1910.1026  Chromium (VI).

* * * * *
    (g) * * *
    (1) General. Where respiratory protection is required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respiratory protection is required during:
* * * * *
    (2) Respiratory protection program. Where respirator use is
required by this section, the employer shall institute a respiratory
protection program in accordance with Sec.  1910.134, which covers each
employee required to use a respirator.
* * * * *

0
16. In section 1910.1027, paragraphs (g)(1) introductory text,
(g)(2)(i), and (m)(4)(i) are revised to read as follows:

Sec.  1910.1027  Cadmium.

* * * * *
    (g) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134(b) through (d) (except (d)(1)(iii)), and
(f) through (m), which covers each employee required by this section to
use a respirator.
* * * * *
    (m) * * *
    (4) * * *
    (i) The employer shall train each employee who is potentially
exposed to cadmium in accordance with the requirements of this section.
The employer shall institute a training program, ensure employee
participation in the program, and maintain a record of the contents of
such program.
* * * * *

0
17. In section 1910.1028, paragraph (g)(1) introductory text and
(g)(2)(i) are revised to read as follows:

Sec.  1910.1028  Benzene.

* * * * *
    (g) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134(b) through (d) (except (d)(1)(iii),
(d)(3)(iii)(b)(1) and (2)), and (f) through (m), which covers each
employee required by this section to use a respirator.
* * * * *

0
18. In section 1910.1029, paragraphs (g)(1) introductory text, (g)(2)
and (k)(1)(i) are revised to read as follows:

Sec.  1910.1029  Coke oven emissions.

* * * * *
    (g) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) Respirator program. The employer must implement a respiratory
protection

program in accordance with Sec.  1910.134(b) through (d) (except
(d)(1)(iii)), and (f) through (m), which covers each employee required
by this section to use a respirator.
* * * * *
    (k) * * *
    (1) * * *
    (i) The employer shall train each employee who is employed in a
regulated area in accordance with the requirements of this section. The
employer shall institute a training program and ensure employee
participation in the program.
* * * * *

0
19. In section 1910.1030, paragraph (g)(2)(i) is revised to read as
follows:

Sec.  1910.1030  Bloodborne pathogens.

* * * * *
    (g) * * *
    (2) * * *
    (i) The employer shall train each employee with occupational
exposure in accordance with the requirements of this section. Such
training must be provided at no cost to the employee and during working
hours. The employer shall institute a training program and ensure
employee participation in the program.
* * * * *

0
20. In section 1910.1043, paragraphs (f)(1) introductory text,
(f)(2)(i), and (i)(1)(i) are revised to read as follows:

Sec.  1910.1043  Cotton dust.

* * * * *
    (f) * * *
    (1) General. For employees who are required to use respirators by
this section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134(b) through (d) (except (d)(1)(iii)), and
(f) through (m), which covers each employee required by this section to
use a respirator.
* * * * *
    (i) * * *
    (1) * * *
    (i) The employer shall train each employee exposed to cotton dust
in accordance with the requirements of this section. The employer shall
institute a training program and ensure employee participation in the
program.
* * * * *

0
21. In section 1910.1044, paragraphs (h)(1) introductory text, (h)(2),
and (n)(1)(i) are revised to read as follows:

Sec.  1910.1044  1,2-dibromo-3-chloropropane.

* * * * *
    (h) * * *
    (1) General. For employees who are required to use respirators by
this section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) Respirator Program. The employer must implement a respiratory
protection program in accordance with Sec.  1910.134(b) through (d)
(except (d)(1)(iii)), and (f) through (m), which covers each employee
required by this section to use a respirator.
* * * * *
    (n) * * *
    (1) * * *
    (i) The employer shall train each employee who may be exposed to
DBCP in accordance with the requirements of this section. The employer
shall institute a training program and ensure employee participation in
the program.
* * * * *

0
22. In section 1910.1045, paragraphs (h)(1) introductory text,
(h)(2)(i), and (o)(1)(i) are revised to read as follows:

Sec.  1910.1045  Acrylonitrile.

* * * * *
    (h) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134(b) through (d) (except (d)(1)(iii),
(d)(3)(iii)(b)(1), and (2)), and (f) through (m), which covers each
employee required by this section to use a respirator.
* * * * *
    (o) * * *
    (1) * * *
    (i) The employer shall train each employee exposed to AN above the
action level, each employee whose exposures are maintained below the
action level by engineering and work practice controls, and each
employee subject to potential skin or eye contact with liquid AN in
accordance with the requirements of this section. The employer shall
institute a training program and ensure employee participation in the
program.
* * * * *

0
23. In section 1910.1047, paragraph (g)(1) introductory text and (g)(2)
are revised to read as follows:

Sec.  1910.1047  Ethylene oxide.

* * * * *
    (g) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) Respirator program. The employer must implement a respiratory
protection program in accordance with Sec.  1910.134(b) through (d)
(except (d)(i)(iii)), and (f) through (m), which covers each employee
required by this section to use a respirator.
* * * * *

0
24. In section 1910.1048, paragraphs (g)(1) introductory text and
(g)(2)(i) are revised to read as follows:

Sec.  1910.1048  Formaldehyde.

* * * * *
    (g) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134(b) through (d) (except (d)(1)(iii),
(d)(3)(iii)(b)(1), and (2)), and (f) through (m), which covers each
employee required by this section to use a respirator.
* * * * *

0
25. In section 1910.1050, paragraphs (h)(1) introductory text and
(h)(2) are revised to read as follows:

Sec.  1910.1050  Methylenedianiline.

* * * * *
    (h) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) Respirator program. The employer must implement a respiratory
protection program in accordance with Sec.  1910.134 (b) through (d)
(except (d)(1)(iii)), and (f) through (m), which covers each

employee required by this section to use a respirator.
* * * * *

0
26. In section 1910.1051, paragraphs (h)(1) introductory text,
(h)(2)(i), and (l)(2)(ii) are revised to read as follows:

Sec.  1910.1051  Butadiene.

* * * * *
    (h) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134(b) through (d) (except (d)(1)(iii),
(d)(3)(iii)(B)(1), and (2)), and (f) through (m), which covers each
employee required by this section to use a respirator.
* * * * *
    (l) * * *
    (2) * * *
    (i) * * *
    (ii) The employer shall train each employee who is potentially
exposed to BD at or above the action level or the STEL in accordance
with the requirements of this section. The employer shall institute a
training program, ensure employee participation in the program, and
maintain a record of the contents of such program.
* * * * *

0
27. In section 1910.1052, paragraphs (g)(1) introductory text and
(g)(2)(i) are revised to read as follows:

Sec.  1910.1052  Methylene chloride.

* * * * *
    (g) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.13(b) through (m) (except (d)(1)(iii)),
which covers each employee required by this section to use a
respirator.
* * * * *

PART 1915--[AMENDED]

0
28. The authority citation for part 1915 is revised to read as follows:

    Authority: Section 41, Longshore and Harbor Workers'
Compensation Act (33 U.S.C. 941); Sections. 4, 6, and 8 of the
Occupational Safety and Health Act of 1970 (29 U.S.C. 653, 655,
657); Secretary of Labor's Order No. 12-71 (36 FR 8754), 8-76 (41 FR
25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 6-96 (62 FR 111), 3-
2000 (65 FR 50017), 5-2002 (67 FR 65008), or 5-2007 (72 FR 31160) as
applicable; 29 CFR Part 1911.

Subpart A--[Amended]

0
29. A new section 1915.9 is added, to read as follows:

Sec.  1915.9  Compliance duties owed to each employee.

    (a) Personal protective equipment. Standards in this part requiring
the employer to provide personal protective equipment (PPE), including
respirators and other types of PPE, because of hazards to employees
impose a separate compliance duty with respect to each employee covered
by the requirement. The employer must provide PPE to each employee
required to use the PPE, and each failure to provide PPE to an employee
may be considered a separate violation.
    (b) Training. Standards in this part requiring training on hazards
and related matters, such as standards requiring that employees receive
training or that the employer train employees, provide training to
employees, or institute or implement a training program, impose a
separate compliance duty with respect to each employee covered by the
requirement. The employer must train each affected employee in the
manner required by the standard, and each failure to train an employee
may be considered a separate violation.

Subpart Z--[Amended]

0
30. In section 1915.1001, paragraphs (h)(1) introductory text,
(h)(3)(i), and (k)(9)(i), are revised to read as follows:

Sec.  1915.1001  Asbestos.

* * * * *
    (h) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used in the following circumstances:
* * * * *
    (3) * * *
    (i) Where respirator use is required by this section, the employer
shall institute a respiratory protection program in accordance with
Sec.  1910.134(b), (d), (e), and (f), which covers each employee
required by this section to use a respirator.
* * * * *
    (k) * * *
    (9) * * *
    (i) The employer shall train each employee who is likely to be
exposed in excess of a PEL and each employee who performs Class I
through IV asbestos operations in accordance with the requirements of
this section. Training shall be provided at no cost to the employee.
The employer shall institute a training program and ensure employee
participation in the program.
* * * * *

0
31. In section 1915.1026, paragraphs (f)(1) introductory text and
(f)(2) are revised to read as follows:

Sec.  1915.1026  Chromium (IV).

* * * * *
    (f) * * *
    (1) General. Where respiratory protection is required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respiratory protection is required during:
* * * * *
    (2) Respiratory Protection Program. Where respirator use is
required by this section, the employer shall institute a respiratory
protection program in accordance with Sec.  1910.134, which covers each
employee required to use a respirator.
* * * * *

PART 1917--[AMENDED]

0
32. The authority citation for part 1917 is revised to read as follows:

    Authority: Section 41, Longshore and Harbor Workers'
Compensation Act (33 U.S.C. 941); Sections 4, 6, and 8 of the
Occupational Safety and Health Act of 1970 (29 U.S.C. 653, 655,
657); Secretary of Labor's Order No. 12-71 (36 FR 8754), 8-76 (41 FR
25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 6-96 (62 FR 111), 3-
2000 (65 FR 50017), 5-2002 (67 FR 65008), or 5-2007 (72 FR 31160) as
applicable; 29 CFR Part 1911.

Subpart A--[Amended]

0
33. A new section 1917.5 is added, to read as follows:

Sec.  1917.5  Compliance duties owed to each employee.

    (a) Personal protective equipment. Standards in this part requiring
the employer to provide personal protective equipment (PPE), including
respirators and other types of PPE, because of hazards to employees
impose a separate compliance duty with respect to each employee covered
by the requirement. The employer must provide PPE to each employee
required to use the PPE, and each failure to provide PPE to an

employee may be considered a separate violation.
    (b) Training. Standards in this part requiring training on hazards
and related matters, such as standards requiring that employees receive
training or that the employer train employees, provide training to
employees, or institute or implement a training program, impose a
separate compliance duty with respect to each employee covered by the
requirement. The employer must train each affected employee in the
manner required by the standard, and each failure to train an employee
may be considered a separate violation.

PART 1918--[AMENDED]

0
34. The authority citation for part 1918 is revised to read as follows:

    Authority: Section 41, Longshore and Harbor Workers'
Compensation Act (33 U.S.C. 941); Sections 4, 6, and 8 of the
Occupational Safety and Health Act of 1970 (29 U.S.C. 653, 655,
657); Secretary of Labor's Order No. 12-71 (36 FR 8754), 8-76 (41 FR
25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 6-96 (62 FR 111), 3-
2000 (65 FR 50017), 5-2002 (67 FR 65008), or 5-2007 (72 FR 31160) as
applicable; 29 CFR Part 1911.

Subpart A--[Amended]

0
35. A new section 1918.5 is added, to read as follows:

Sec.  1918.5  Compliance duties owed to each employee.

    (a) Personal protective equipment. Standards in this part requiring
the employer to provide personal protective equipment (PPE), including
respirators and other types of PPE, because of hazards to employees
impose a separate compliance duty with respect to each employee covered
by the requirement. The employer must provide PPE to each employee
required to use the PPE, and each failure to provide PPE to an employee
may be considered a separate violation.
    (b) Training. Standards in this part requiring training on hazards
and related matters, such as standards requiring that employees receive
training or that the employer train employees, provide training to
employees, or institute or implement a training program, impose a
separate compliance duty with respect to each employee covered by the
requirement. The employer must train each affected employee in the
manner required by the standard, and each failure to train an employee
may be considered a separate violation.

PART 1926--[AMENDED]

Subpart C--[Amended]

0
36. The authority citation for subpart C of 29 CFR part 1926 is revised
to read as follows:

    Authority: Sec. 3704, Contract Work Hours and Safety Standards
Act (40 U.S.C. 333); secs. 4, 6, and 8, Occupational Safety and
Health Act of 1970 (29 U.S.C. 653, 655, 657); Secretary of Labor's
Order No. 12-71 (36 FR 8754), 8-76 (41 FR 25059), 9-83 (48 FR
35736), 6-96 (62 FR 111), or 5-2007 (72 FR 31160) as applicable; and
29 CFR part 1911.

0
37. In section 1926.20, a new paragraph (f) is added to read as
follows:

Sec.  1926.20  General safety and health provisions.

* * * * *
    (f) Compliance duties owed to each employee. (1) Personal
protective equipment. Standards in this part requiring the employer to
provide personal protective equipment (PPE), including respirators and
other types of PPE, because of hazards to employees impose a separate
compliance duty with respect to each employee covered by the
requirement. The employer must provide PPE to each employee required to
use the PPE, and each failure to provide PPE to an employee may be
considered a separate violation.
    (2) Training. Standards in this part requiring training on hazards
and related matters, such as standards requiring that employees receive
training or that the employer train employees, provide training to
employees, or institute or implement a training program, impose a
separate compliance duty with respect to each employee covered by the
requirement. The employer must train each affected employee in the
manner required by the standard, and each failure to train an employee
may be considered a separate violation.

Subpart D--[Amended]

0
38. The authority citation for subpart D of 29 CFR part 1926 is revised
to read as follows:

    Authority: Section 3704 of the Contract Work Hours and Safety
Standards Act (40 U.S.C. 3701 et seq.); Sections 4, 6, and 8 of the
Occupational Safety and Health Act of 1970 (29 U.S.C. 653, 655, and
657); Secretary of Labor's Orders 12-71 (36 FR 8754), 8-76 (41 FR
25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 6-96 (62 FR 111), 3-
2000 (62 FR 50017), 5-2002 (67 FR 65008); or 5-2007 (72 FR 31160) as
applicable; and 29 CFR part 1911.

    Sections 1926.58, 1926.59, 1926.60, and 1926.65 also issued
under 5 U.S.C. 553 and 29 CFR part 1911.
    Section 1926.62 of 29 CFR also issued under section 1031 of the
Housing and Community Development Act of 1992 (42 U.S.C. 4853).
    Section 1926.65 of 29 CFR also issued under section 126 of the
Superfund Amendments and Reauthorization Act of 1986, as amended (29
U.S.C. 655 note), and 5 U.S.C. 553.

0
39. In section 1926.60, paragraph (i)(1) introductory text, and (i)(2)
are revised to read as follows:

Sec.  1926.60  Methylenedianiline.

* * * * *
    (i) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) Respirator program. The employer must implement a respiratory
protection program in accordance with Sec.  1910.134 (b) through (d)
(except (d)(1)(iii)), and (f) through (m), which covers each employee
required by this section to use a respirator.
* * * * *

0
40. In section 1926.62, paragraphs (f)(1) introductory text, (f)(2)(i),
and (l)(1)(ii) are revised to read as follows:

Sec.  1926.62  Lead.

* * * * *
    (f) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134(b) through (d) (except (d)(1)(iii)), and
(f) through (m), which covers each employee required by this section to
use a respirator.
* * * * *
    (l) * * *
    (ii) The employer shall train each employee who is subject to
exposure to lead at or above the action level on any day, or who is
subject to exposure to lead compounds which may cause skin or eye
irritation (e.g., lead arsenate, lead azide), in accordance with the
requirements of this section. The employer shall institute a training
program and ensure employee participation in the program.
* * * * *

Subpart R--[Amended]

0
41. The authority citation for subpart R of 29 CFR part 1926 is revised
to read as follows:

    Authority: Sec. 3704, Contract Work Hours and Safety Standards
Act (Construction Safety Act) (40 U.S.C. 333); Sec. 4, 6, and 8,
Occupational Safety and Health Act of 1970 (29 U.S.C. 653, 655,
657); Secretary of Labor's Order No. 3-2000 (65 FR 50017), No. 5-
2002 (67 FR 65008), or No. 5-2007 (72 FR 31160) as applicable; and
29 CFR part 1911.

0
42. In section 1926.761, paragraph (b) is revised to read as follows:

Sec.  1926.761  Training.

* * * * *
    (b) Fall hazard training. The employer shall train each employee
exposed to a fall hazard in accordance with the requirements of this
section. The employer shall institute a training program and ensure
employee participation in the program.
* * * * *

Subpart Z--[Amended]

0
43. The authority citation for subpart Z of 29 CFR part 1926 is revised
to read as follows:

    Authority: Section 3704 of the Contract Work Hours and Safety
Standards Act (40 U.S.C. 3701 et seq.); Sections 4, 6, and 8 of the
Occupational Safety and Health Act of 1970 (29 U.S.C. 653, 655,
657); Secretary of Labor's Orders 12-71 (36 FR 8754), 8-76 (41 FR
25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 6-96 (62 FR 111), 3-
2000 (62 FR 50017), 5-2002 (67 FR 65008), or 5-2007 (71 FR 31160),
as applicable; and 29 CFR part 11.

    Section 1926.1102 of 29 CFR not issued under 29 U.S.C. 655 or 29
CFR part 1911; also issued under 5 U.S.C. 553.

0
44. In section 1926.1101, paragraphs (h)(1) introductory text, (h)(2),
and (k)(9)(i) are revised to read as follows:

Sec.  1926.1101  Asbestos.

* * * * *
    (h) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134 (b) through (d) (except (d)(1)(iii)),
and (f) through (m), which covers each employee required by this
section to use a respirator.
* * * * *
    (k) * * *
    (9) * * *
    (i) The employer shall train each employee who is likely to be
exposed in excess of a PEL, and each employee who performs Class I
through IV asbestos operations, in accordance with the requirements of
this section. Such training shall be conducted at no cost to the
employee. The employer shall institute a training program and ensure
employee participation in the program.
* * * * *

0
45. In section 1926.1126, paragraphs (f)(1) introductory text and
(f)(2) are revised to read as follows:

Sec.  1926.1126  Chromium (IV).

* * * * *
    (f) * * *
    (1) General. Where respiratory protection is required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respiratory protection is required during:
* * * * *
    (2) Respiratory protection program. Where respirator use is
required by this section, the employer shall institute a respiratory
protection program in accordance with Sec.  1910.134, which covers each
employee required to use a respirator.
* * * * *

0
46. In section 1926.1127, paragraphs (g)(1) introductory text,
(g)(2)(i), and (m)(4)(i) are revised to read as follows:

Sec.  1926.1127  Cadmium.

* * * * *
    (g) * * *
    (1) General. For employees who use respirators required by this
section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this paragraph.
Respirators must be used during:
* * * * *
    (2) * * *
    (i) The employer must implement a respiratory protection program in
accordance with Sec.  1910.134 (b) through (d) (except (d)(1)(iii)),
and (f) through (m), which covers each employee required by this
section to use a respirator.
* * * * *
    (m) * * *
* * * * *
    (4) * * *
    (i) The employer shall train each employee who is potentially
exposed to cadmium in accordance with the requirements of this section.
The employer shall institute a training program, ensure employee
participation in the program, and maintain a record of the contents of
the training program.
* * * * *
[FR Doc. E8-29122 Filed 12-9-08; 4:15 pm]

BILLING CODE 4510-26-P


[Federal Register Volume 86, Number 33 (Monday, February 22, 2021)]
[Rules and Regulations]
[Pages 10441-10444]
[FR Doc No: 2021-01851]

=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0459; Product Identifier 2020-NM-049-AD; Amendment
39-21380; AD 2021-01-04]
RIN 2120-AA64

Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
The Boeing Company Model 737 series airplanes, excluding Model 737-100,
-200, -200C, -300, -400, and -500 series airplanes. This AD was
prompted by reports of cracked or completely severed lugs in the upper
aft corner stop fitting assembly of the forward entry door. This AD
requires an inspection, a measurement, or a records check of that
assembly to determine the part number, and replacement if a certain
part is found. The FAA is issuing this AD to address the unsafe
condition on these products.

DATES: This AD is effective March 29, 2021.
    The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of March 29,
2021.

ADDRESSES: For service information identified in this final rule,
contact Boeing Commercial Airplanes, Attention: Contractual & Data
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA
90740-5600; telephone<PHONE_NUMBER>; internet https://www.myboeingfleet.com. You may view this service information at the
FAA, Airworthiness Products Section, Operational Safety Branch, 2200
South 216th St., Des Moines, WA. For information on the availability of
this material at the FAA, call<PHONE_NUMBER>. It is also available on
the internet at https://www.regulations.gov by searching for and
locating Docket No. FAA-2020-0459.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0459; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this final rule, any comments received, and other information. The
address for Docket Operations is U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Michael Bumbaugh, Aerospace Engineer,
Airframe Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax:<PHONE_NUMBER>; email:
<EMAIL_ADDRESS>
SUPPLEMENTARY INFORMATION:

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to all The Boeing Company
Model 737 series airplanes, excluding Model 737-100, -200, -200C, -300,
-400, and -500 series airplanes. The NPRM published in the Federal
Register on June 3, 2020 (85 FR 34136). The NPRM was prompted by
reports of cracked or completely severed lugs in the upper aft corner
stop fitting assembly of the forward entry door. Analysis of the design
of the stop fitting assembly revealed that undersized wall thickness of
the lug made it susceptible to fatigue cracking, which may result in
the forward entry door being unable to sustain limit load. In the NPRM,
the FAA proposed to require an inspection, a measurement, or a records
check of that assembly to determine the part number, and replacement if
a certain part-numbered assembly is installed.
    The FAA is issuing this AD to address cracked or completely severed
lugs, which could result in reduced structural integrity of the forward
entry door and consequent rapid decompression of the airplane.

Discussion of Final Airworthiness Directive

Comments

    The FAA received comments from four commenters. The following
presents the comments received on the NPRM and the FAA's response to
each comment.

Effect of Winglets on Accomplishment of the Proposed Actions

    Aviation Partners Boeing stated that the installation of winglets
per Supplemental Type Certificate (STC) ST00830SE does not affect
compliance with the proposed actions.
    The FAA agrees that the installation of winglets per STC ST00830SE
would not affect the ability to replace the affected stop fitting
assembly with a newly designed stop fitting assembly as required by
this AD. Operators of airplanes with these winglets do not need to
request a ``change in product'' alternative method of compliance (AMOC)
approval as specified in 14 CFR 39.17. The FAA has redesignated
paragraph (c) of the proposed AD as paragraph (c)(1) of this AD, and
added paragraph (c)(2) accordingly.

Request for Compliance Actions at the Component Level

    Southwest Airlines (SWA) asked that the compliance actions be
reported at the component level due to the interchangeability of the
forward entry doors between the Model 737 NG and 737 MAX fleets.
    The FAA infers that the commenter is requesting that the AD's
applicability point towards the component parts, rather than the
airplane. The FAA acknowledges that the component most likely to be
rotated is the forward entry door because doors are likely removed with
the stop fittings intact. However, the FAA disagrees with changing the
applicability of this AD because the unsafe condition is related to the
stop fitting assembly and an affected stop fitting assembly may be
installed on a forward entry door of any airplane identified in
paragraph (c) of this AD. In addition, paragraph (i) of this AD,
``Parts Installation Prohibition,'' states that no person may install a
forward entry door that has a stop fitting assembly with part number
(P/N) 141A6104-3 on any airplane. The FAA used this language because
doors are often rotated among aircraft with the stop fitting assembly
already installed. The FAA has therefore determined that an airplane-
level applicability is appropriate and has not changed this AD in this
regard.

Request for Clarification of Compliance Time

    SWA asked for clarification of the reference in paragraph (g) of
the proposed AD to the applicable times specified in the ``Compliance''
paragraph of Boeing Alert Requirements Bulletin 737-52A1180 RB, dated
January 24, 2020. SWA asked if once it is determined that a P/N
141A6104-3 fitting is installed on a door through records or survey,
the fitting must be replaced before further flight or whether it can be
replaced at a later date as long as the door is still within its
required compliance time per the referenced service information.
    ``Table 1: Forward Entry Door Number 7 Stop Fitting Assembly
Inspection'' of Paragraph 3., ``Compliance'' of Boeing Service Bulletin
737-52A1180, dated January 24, 2020, gives the compliance time for
replacing the P/N 141A6104-3 fitting if found. The compliance time is
before 10,000 total flight cycles on the forward entry door, or within
5,000 forward entry door flight cycles after the original issue date of
Boeing Alert Requirements Bulletin 737-52A1180 RB, dated January 24,
2020, whichever occurs later. However, under paragraph (h) of this AD,
the date for determining compliance time is the effective date of this
AD, and not the issue date of the bulletin. Therefore, the FAA
clarifies that if the compliance time has not yet been reached, then
the fitting does not need to be replaced before further flight. The FAA
has not changed this AD in this regard.

Request To Change Parts Installation Prohibition Paragraph

    SWA asked that the FAA reword paragraph (i) of the proposed AD to
require compliance with the service information before installation of
the fitting instead of prohibiting installation of the fitting.
    The intent of paragraph (i) of this AD is to prohibit installation
of an affected part on an airplane with a compliance time for this
prohibition related to the airplane configuration and whether the
actions specified in Boeing Alert Requirements Bulletin 737-52A1180 RB,
dated January 24, 2020, must be accomplished on that airplane. The FAA
has not made the changes requested by the commenter. However, the FAA
has revised paragraph (i) of this AD to clarify that, for any airplane
required to accomplish the actions required by paragraph (g) of this
AD, the parts installation prohibition does not take effect until the
applicable actions required by paragraph (g) of this AD have been
accomplished on that airplane. For airplanes having an original
airworthiness certificate or original export certificate of
airworthiness dated after the effective date of this AD, the parts
installation prohibition continues to be applicable as of the effective
date of this AD.

Request for Correction of Error in Service Information

    AIRDO requested the FAA correct an error in the service information
incorporated by reference in paragraph (g) of the proposed AD. AIRDO
noted that page 13 of Boeing Alert Requirements Bulletin 737-52A1180
RB, dated January 24, 2020, refers to the procedures in ``SB 747-
52A1180'' when the correct reference is ``SB 737-52A1180.''
    The FAA agrees with the commenter's request. The FAA has added
paragraph (h)(3) of this AD to clarify the correct service information
reference.

Request To Limit the Applicability

    American Airlines (AA) and AIRDO requested the FAA limit the
applicability of the proposed AD to the line numbers (L/Ns) identified
in the effectivity of Boeing Alert Service Bulletin 737-52A1180, dated
January 24, 2020. AA stated that because the aircraft illustrated parts
catalog (IPC) does not allow for the unsafe part to be installed on
aircraft beyond L/N 1075, or on the door assemblies allowed to be
installed on aircraft beyond L/N 1075, including all Model 737-600, -
700, -700C, -800, -900, and -900ER series airplanes in the
applicability of the proposed AD is unnecessarily redundant. AIRDO
stated Boeing has not allowed operators to install P/Ns 141A6104-3,
141A6150-1, 141A6150-2, and 141A6100-678 on airplanes other than those
with L/N 1-1075 per the IPC and related drawings. AIRDO also stated
that if the fitting or the door assembly must be replaced, operators
will check the IPC and drawing to confirm if the affected part number
can be used on the specific airplane. AIRDO stated that based on this
general protocol, even though the fitting and door assembly are
physically interchangeable, a suspected fitting and door assembly
cannot be installed on airplanes having L/N 1076 and subsequent.
    The FAA does not agree with the requests to limit the
applicability. Both the stop fitting assemblies and the doors they are
installed on are physically interchangeable among the airplane models
listed in the applicability of this AD. The FAA has determined it is
necessary to ensure these rotable parts will not be introduced on other
airplanes by including these airplanes in the applicability of this AD.
Therefore, the FAA has not changed this AD in this regard.

Conclusion

    The FAA reviewed the relevant data, considered the comments
received, and determined that air safety requires adopting this AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition in these products. Except for the changes described
previously, this AD is adopted as proposed in the NPRM. None of the
changes will increase the economic burden on any operator.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Boeing Alert Requirements Bulletin 737-52A1180 RB,
dated January 24, 2020. The service information specifies procedures
for an inspection, a measurement, or a records check of the upper aft
corner stop fitting assembly to determine the part number, and
applicable on-condition actions. The on-condition action is to replace
the affected stop fitting assembly with a newly designed stop fitting
assembly that has improved wall thickness and strength. This service
information is reasonably available because the interested parties have
access to it through their normal course of business or by the means
identified in the ADDRESSES section.

Costs of Compliance

    The FAA estimates that this AD affects 1,075 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
            Action                 Labor cost       Parts cost       Cost per product     Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Inspection and part             Up to 4 work-             $4,640  Up to $4,980.........  Up to $5,353,500.
 replacement.                    hours x $85 per
                                 hour = Up to
                                 $340.
----------------------------------------------------------------------------------------------------------------

    The FAA has included all known costs in the cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
    The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.

Regulatory Findings

    This AD will not have federalism implications under Executive Order
13132. This AD will not have a substantial direct effect on the States,
on the relationship between the national government and the States, or
on the distribution of power and responsibilities among the various
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive
Order 12866,
    (2) Will not affect intrastate aviation in Alaska, and
    (3) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

The Amendment

    Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.

Sec.  39.13   [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness
directive:

2021-01-04 The Boeing Company: Amendment 39-21380; Docket No. FAA-
2020-0459; Product Identifier 2020-NM-049-AD.

(a) Effective Date

    This airworthiness directive (AD) is effective March 29, 2021.

(b) Affected ADs

    None.

(c) Applicability

    (1) This AD applies to all The Boeing Company Model 737 series
airplanes, excluding Model 737-100, -200, -200C, -300, -400, and -
500 series airplanes, certificated in any category.
    (2) Installation of Supplemental Type Certificate (STC)
ST00830SE does not affect the ability to accomplish the actions
required by this AD. Therefore, for airplanes on which STC ST00830SE
is installed, a ``change in product'' alternative method of
compliance (AMOC) approval request is not necessary to comply with
the requirements of 14 CFR 39.17.

(d) Subject

    Air Transport Association (ATA) of America Code 52, Doors.

(e) Unsafe Condition

    This AD was prompted by reports of cracked or completely severed
lugs in the stop fitting assembly of the forward entry door. The FAA
is issuing this AD to address such cracking or severing, which could
result in reduced structural integrity of the forward entry door and
consequent rapid decompression of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified,
unless already done.

(g) Required Actions

    For airplanes having a date of issuance of the original
airworthiness certificate or date of issuance of the original export
certificate of airworthiness on or before the effective date of this
AD: Except as specified by paragraph (h) of this AD, at the
applicable times specified in the ``Compliance'' paragraph of Boeing
Alert Requirements Bulletin 737-52A1180 RB, dated January 24, 2020,
do all applicable actions identified in, and in accordance with, the
Accomplishment Instructions of Boeing Alert Requirements Bulletin
737-52A1180 RB, dated January 24, 2020.

    Note 1 to paragraph (g):  Guidance for accomplishing the actions
required by this AD can be found in Boeing Alert Service Bulletin
737-52A1180, dated January 24, 2020, which is referred to in Boeing
Alert Requirements Bulletin 737-52A1180 RB, dated January 24, 2020.

(h) Exceptions to Service Information Specifications

    (1) Where Boeing Alert Requirements Bulletin 737-52A1180 RB,
dated January 24, 2020, uses the phrase ``the original issue date of
Requirements Bulletin 737-52A1180 RB,'' this AD requires using ``the
effective date of this AD.''
    (2) Where Boeing Alert Requirements Bulletin 737-52A1180 RB,
dated January 24, 2020, specifies contacting Boeing for repair
instructions: This AD requires doing the repair before further
flight using a method approved in accordance with the procedures
specified in paragraph (j) of this AD.
    (3) Where the heading in Table 1 of the Accomplishment
Instructions in Boeing Alert Requirements Bulletin 737-52A1180 RB,
dated January 24, 2020, identifies ``SB 747-52A1180,'' the correct
reference for this AD is ``SB 737-52A1180.''

(i) Parts Installation Prohibition

    No person may install a stop fitting assembly with part number
141A6104-3 or a forward entry door that has a stop fitting assembly
with part number 141A6104-3, on any airplane, as of the applicable
time specified in paragraph (i)(1), (2), or (3) of this AD.
    (1) For airplanes having an original airworthiness certificate
or original export certificate of airworthiness dated after the
effective date of this AD: As of the effective date of this AD.
    (2) For airplanes on which it is determined a stop fitting
assembly with part number 141A6104-3 is not installed, as required
by paragraph (g) of this AD: After accomplishing the inspection,
records check, or measurement required by paragraph (g) of this AD.
    (3) For airplanes on which it is determined a stop fitting
assembly with part number 141A6104-3 is installed, as required by
paragraph (g) of this AD: After accomplishing the replacement
required by paragraph (g) of this AD.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle ACO Branch, FAA, has the authority to
approve AMOCs for this AD, if requested using the procedures found
in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request
to your principal inspector or local Flight Standards District
Office, as appropriate. If sending information directly to the
manager of the certification office, send it to the attention of the
person identified in paragraph (k)(1) of this AD. Information may be
emailed to<EMAIL_ADDRESS>    (2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
    (3) An AMOC that provides an acceptable level of safety may be
used for any repair, modification, or alteration required by this AD
if it is approved by The Boeing Company Organization Designation
Authorization (ODA) that has been authorized by the Manager, Seattle
ACO Branch, FAA, to make those findings. To be approved, the repair

method, modification deviation, or alteration deviation must meet
the certification basis of the airplane, and the approval must
specifically refer to this AD.

(k) Related Information

    (1) For more information about this AD, contact Michael
Bumbaugh, Aerospace Engineer, Airframe Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax:
206-231-3522; email<EMAIL_ADDRESS>    (2) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (l)(3) and (4) of this AD.

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do
the actions required by this AD, unless the AD specifies otherwise.
    (i) Boeing Alert Requirements Bulletin 737-52A1180 RB, dated
January 24, 2020.
    (ii) [Reserved]
    (3) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Contractual & Data Services
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-
5600; telephone<PHONE_NUMBER>; internet https://www.myboeingfleet.com.
    (4) You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 2200
South 216th St., Des Moines, WA. For information on the availability
of this material at the FAA, call<PHONE_NUMBER>.
    (5) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, email<EMAIL_ADDRESS>or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on December 28, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-01851 Filed 2-19-21; 8:45 am]
BILLING CODE 4910-13-P