From:
D'Angelo, Wayne J<EMAIL_ADDRESS>Sent:
Tuesday, March 2, 2021 8:49 PM
To:
Jones, DonnaLee<EMAIL_ADDRESS>Stuart, Eric<EMAIL_ADDRESS>Cc:
Balserak, Paul<EMAIL_ADDRESS>Green, Joseph J<EMAIL_ADDRESS>Raymond, Gabrielle<EMAIL_ADDRESS>Subject:
RE: updated list of EAF Facilities

Good Evening, Dr. Jones.   I have compiled in the attached spreadsheet the steel associations' suggested revisions to your draft list of domestic EAFs.  We can't say that we have all of the facilities 100% correct because there are several facilities that are not members of any of the associations.  We used public resources where we could to try to help figure those out.  We made all of our notations in a new column "J", and we only noted those facilities when we suggested an edit or clarification.  If we did not edit or notate an entry, it is because we believed your information was correct.   We also added one facility in green in the last row.  It is Liberty Georgetown, SC.  It is idled, but we decided to note it alongside the other idled facilities.

Again, I cannot warrant that we've delivered you a perfect list, but we suggested whatever improvements we could.  And we will update our suggestions if we learn new information.  In the meantime, please do not hesitate to call or email with questions.

Best,
Wayne

WAYNE D'ANGELO

Kelley Drye & Warren LLP
Tel:<PHONE_NUMBER>
Cell:<PHONE_NUMBER>

<< UPDATED-EAF-Facility_List-steel industry suggested revisions v1.xlsx >>

From: Jones, DonnaLee<EMAIL_ADDRESS>Sent: Friday, February 5, 2021 2:10 PM
To: Stuart, Eric<EMAIL_ADDRESS>Cc: D'Angelo, Wayne J<EMAIL_ADDRESS>Balserak, Paul<EMAIL_ADDRESS>Green, Joseph J<EMAIL_ADDRESS>GABRIELLE RAYMOND<EMAIL_ADDRESS>Subject: updated list of EAF Facilities

Hello again  -  We updated our list of EAF so as to do some demographic analyses and for a small business determination. We have a list of 101 EAF now that I would like you to review. The yellow highlighted facilities are the additional companies that the economists found. The attached file shows the updated facility information and the economists' links and determination for number of employees. At the bottom of the list are facilities that appear closed or idle, and new facilities that may start soon (that you had previously identified for us as potential new sources).

We will be doing more analyses soon, so I'd appreciate you all looking over this list soon to make sure we do not have any facilities on the list that do not belong and also for any potential omissions or new sources. Thanks!

Regards,
Donna Lee Jones, Ph.D.
Senior Technical Advisor, Metals Sector
U. S. Environmental Protection Agency
Office of Air Quality Planning and Standards
Sector Policies and Programs Division / Metals & Inorganic Chemicals Group (D243-02)
Research Triangle Park, NC  27711  Tele:<PHONE_NUMBER>  Fax<PHONE_NUMBER>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Reasonableness never fails to be appreciated."  - anon.

Pronouns - She/Her/Hers
Salutation - Dr./Ms.


[Federal Register Volume 86, Number 191 (Wednesday, October 6, 2021)]
[Rules and Regulations]
[Pages 55479-55483]
[FR Doc No: 2021-21830]

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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0309; Project Identifier MCAI-2020-00918-T;
Amendment 39-21730; AD 2021-19-12]
RIN 2120-AA64

Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate
Previously Held by Bombardier, Inc.) Airplanes

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

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for MHI
RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 702),
CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series
705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional
Jet Series 1000) airplanes. This AD was prompted by reports and a
design review indicating that there could be possible corrosion on the
main landing gear (MLG) outer cylinder at the interface with the gland
nut on the shock strut installation and on the forward and aft trunnion
pins in the MLG dressed shock strut assembly. This AD requires detailed
inspections for corrosion on the MLG outer cylinder assemblies, certain
MLG dressed shock strut assemblies, and the MLG outer cylinder at the
gland nut threads, thread relief groove, and chamfer; a detailed
inspection for the presence of corrosion-inhibiting compound (CIC) on
the MLG forward and aft trunnion pins and grease adapter assemblies;
applicable corrective actions; application of primer, paint, and CIC as
applicable; re-identification of certain part numbers; and marking of
the MOD STATUS field of the nameplate of certain parts. The FAA is
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective November 10, 2021.
    The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of November 10,
2021

ADDRESSES: For service information identified in this final rule,
contact MHI RJ Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel,
Qu[eacute]bec J7N 1E1 Canada; Widebody Customer Response Center North
America toll-free telephone +1-844-272-2720 or direct-dial telephone
+1-514-855-8500; fax +1-514-855-

8501; email<EMAIL_ADDRESS>internet https://eservices.aero.bombardier.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-2021-
0309.

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-2021-
0309; 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: Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone<PHONE_NUMBER>; fax<PHONE_NUMBER>; email<EMAIL_ADDRESS>
SUPPLEMENTARY INFORMATION:

Background

    Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2019-17R1, dated June 18,
2020 (TCCA AD CF-2019-17R1, dated June 18, 2020) (also referred to as
the Mandatory Continuing Airworthiness Information, or the MCAI), to
correct an unsafe condition for MHI RJ Aviation ULC (type certificate
previously held by Bombardier, Inc.) Model CL-600-2C10 (Regional Jet
Series 700, 701 & 702) airplanes, Model CL-600-2C11 (Regional Jet
Series 550) airplanes, Model CL-600-2D15 (Regional Jet Series 705)
airplanes, CL-600-2D24 (Regional Jet Series 900) airplanes, and Model
CL-600-2E25 (Regional Jet Series 1000) airplanes. You may examine the
MCAI in the AD docket on the internet at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0309.
    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to MHI RJ Aviation ULC
Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11
(Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-
600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet
Series 1000) airplanes. The NPRM published in the Federal Register on
April 20, 2021 (86 FR 20461). The NPRM was prompted by reports and a
design review indicating that there could be corrosion on the MLG outer
cylinder assemblies and certain MLG dressed shock strut assemblies;
primer was not correctly applied at the gland nut thread relief groove
and chamfer areas on certain MLG outer cylinders during production; and
CIC was inadvertently removed from certain MLG forward and aft trunnion
pins and grease adapter assemblies during maintenance. The NPRM
proposed to require detailed inspections for corrosion on the MLG outer
cylinder assemblies, certain MLG dressed shock strut assemblies, and
the MLG outer cylinder at the gland nut threads, thread relief groove,
and chamfer; a detailed inspection for the presence of CIC on the MLG
forward and aft trunnion pins and grease adapter assemblies; applicable
corrective actions; application of primer, paint, and CIC as
applicable; re-identification of certain part numbers; and marking of
the MOD STATUS field of the nameplate of certain parts. The FAA is
issuing this AD to address undetected corrosion on the MLG forward and
aft trunnion pins, and the gland nut interface on certain MLG outer
cylinders, which could result in an MLG collapse. See the MCAI for
additional background information.

Comments

    The FAA gave the public the opportunity to participate in
developing this final rule. The following presents the comments
received on the NPRM and the FAA's response to each comment.

Support for the NPRM

    Air Line Pilots Association, International (ALPA) stated that it
supports the NPRM.

Request to Separate the Proposed AD Into Two Separate AD Actions

    SkyWest Airlines (SkyWest) requested that the proposed AD be
separated into two AD actions. The commenter recommended that one AD
address the MLG outer cylinder assemblies and dressed shock strut
assemblies and the other AD address the MLG forward and aft trunnion
pins. The commenter stated that there are multiple service bulletins
and requirements specified in the proposed AD that are related to
different MLG components.
    The FAA disagrees with the commenter's request. The FAA
acknowledges that this AD includes requirements for different MLG
components and specifies multiple service bulletins; however, these MLG
components are interrelated. In order to address the identified unsafe
condition the requirements must be completed at the same time. In
addition, the AD body is organized to facilitate an owner/operator's
compliance with the requirements of this AD. Each header for paragraphs
(g) through (k) of this AD identifies the affected MLG component and
the applicable actions. The FAA has not changed this AD in regard to
this issue.

Request To Allow Credit for Vendor Service Bulletins

    SkyWest requested that paragraph (l) of the proposed AD, Credit for
Previous Actions, be revised to include the applicable vendor service
bulletins published by Goodrich. The commenter stated that this would
alleviate the need to request multiple alternative methods of
compliance (AMOCs) for airplanes on which the MLG gear is returned from
overhaul with only the actions described in the Goodrich service
bulletins accomplished rather that the actions described in the
corresponding Bombardier service bulletins. The commenter noted that
each Bombardier service bulletin specified in paragraph (l) of the
proposed AD refers to a corresponding Goodrich service bulletin.
    The FAA agrees to clarify what must be done if certain actions
required by this AD have already been accomplished. Paragraph (f) of
this AD states ``Comply with this AD within the compliance times
specified, unless already done.'' If an operator has already
accomplished some of the actions required by this AD then only the
remaining actions need to be completed. Therefore, for airplanes that
have already incorporated the actions described in UTC Aerospace
Systems (Goodrich Aerospace Canada Ltd) Service Bulletin 49101-32-72,
Goodrich Service Bulletin 49200-32-44, or Goodrich Service Bulletin
49200-32-80 prior to the effective date of this AD, only the remaining
requirements described in the corresponding Bombardier service
bulletins need to be completed on those airplanes.
    The FAA does not agree with granting complete credit for the
actions required by paragraphs (g), (i), and (j) of this AD using only
the procedures described in the applicable Goodrich service

bulletins. There are additional actions required for these inspections,
including corrective actions and operational tests, that are included
in the Bombardier service bulletins but not in the corresponding
Goodrich service bulletins.
    In regards to paragraph (l) in this AD, Credit for Previous
Actions, the intent of that paragraph is to provide credit for actions
required by paragraphs (g), (h), and (j) of this AD if those actions
were performed before the effective date of this AD using the certain
earlier revisions of the applicable Bombardier service bulletins
specified in paragraph (l) of this AD or equivalent service
information. The FAA has not changed this AD in regard to this issue.

Conclusion

    The FAA reviewed the relevant data, considered the comments
received, and determined that air safety and the public interest
require adopting this final rule as proposed, except for minor
editorial changes. The FAA has determined that these minor changes:
     Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued the following service information.
     Service Bulletin 670BA-32-024, Revision C, dated February
11, 2015, which describes procedures for a detailed visual inspection
of the MLG outer cylinder assemblies and dressed shock strut assemblies
for corrosion of the outer cylinder gland nut thread interface and
relief area, and corrective actions including repair and corrosion
removal.
     Service Bulletin 670BA-32-034, Revision B, dated December
21, 2018, which describes procedures for a detailed visual inspection
of the inside diameter of the MLG trunnion pins for discrepancies
including the condition of paint and CIC and evidence of corrosion, and
corrective actions including replacement and rework of the trunnion
pins as applicable.
     Service Bulletin 670BA-32-039, dated February 29, 2012,
which describes procedures for inspections of the inner diameter of the
MLG forward and aft trunnion pins for discrepancies including corrosion
and inadequate CIC, and corrective actions including application of CIC
and replacement of corroded forward and aft trunnion pins with
serviceable parts.
     Service Bulletin 670BA-32-052, dated February 9, 2015,
which describes procedures for a detailed visual inspection of the
gland nut thread relief groove and chamfer surface for the condition of
the protective coating and for discrepancies including evidence of
corrosion or rework at the gland nut thread relief groove and chamfer
surface of the MLG shock strut outer cylinder assemblies, and
corrective actions including corrosion removal.
    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.

Differences Between This AD and the MCAI or Service Information

    Although certain service information specifies to return damaged
MLG trunnion pins to Goodrich Landing Gear, that action would not be
required by this AD.

Costs of Compliance

    The FAA estimates that this AD affects 562 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
              Labor cost                      Parts cost            Cost per product      Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Up to 100 work-hours x $85 per hour =  Up to $36,604..........  Up to $45,104..........  Up to $25,348,448.
 Up to $8,500.
----------------------------------------------------------------------------------------------------------------

    According to the manufacturer, some or all of the costs of this AD
may be covered under warranty, thereby reducing the cost impact on
affected operators. The FAA does not control warranty coverage for
affected operators. As a result, the FAA has included all known costs
in the cost estimate.

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.

Adoption of 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:

2021-19-12 MHI RJ Aviation ULC (Type Certificate Previously Held by
Bombardier, Inc.): Amendment 39-21730; Docket No. FAA-2021-0309;
Project Identifier MCAI-2020-00918-T.

(a) Effective Date

    This airworthiness directive (AD) is effective November 10,
2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to the MHI RJ Aviation ULC (type certificate
previously held by Bombardier, Inc.) airplanes, certificated in any
category, specified in paragraphs (c)(1) through (3) of this AD.
    (1) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) and
Model CL-600-2C11 (Regional Jet Series 550) airplanes, serial
numbers 10002 and subsequent.
    (2) Model CL-600-2D15 (Regional Jet Series 705) airplanes and
CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers
15001 and subsequent.
    (3) Model CL-600-2E25 (Regional Jet Series 1000) airplanes,
serial numbers 19001 and subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 32, Landing
Gear.

(e) Reason

    This AD was prompted by reports and a design review indicating
that there could be corrosion on the main landing gear (MLG) outer
cylinder assemblies at the interface with the gland nut on the shock
strut installation and on the forward and aft trunnion pins in the
MLG dressed shock strut assemblies; primer was not correctly applied
at the gland nut thread relief groove and chamfer areas on certain
MLG outer cylinders during production; and corrosion-inhibiting
compound (CIC) could have inadvertently been removed from certain
MLG forward and aft trunnion pins and grease adapter assemblies
during maintenance. The FAA is issuing this AD to address undetected
corrosion on the MLG forward and aft trunnion pins, and the gland
nut interface on certain MLG outer cylinders, which could result in
an MLG collapse.

(f) Compliance

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

(g) Inspection and Application of Corrosion Protection for MLG Outer
Cylinder Assemblies and Certain MLG Dressed Shock Strut Assemblies

    For airplanes identified in paragraphs (c)(1) and (2) of this AD
with MLG outer cylinder assemblies and MLG dressed shock strut
assemblies having part numbers and serial numbers specified in the
effectivity tables in Section 1.A.(1) of Bombardier Service Bulletin
670BA-32-024, Revision C, dated February 11, 2015 (Bombardier
Service Bulletin 670BA-32-024, Revision C): At the applicable time
specified in paragraph (g)(1) or (2) of this AD, do a detailed
visual inspection for corrosion, and all other required actions
specified in, and in accordance with, Section 2., Part A, of the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-
024, Revision C.
    (1) For MLG assemblies that have accumulated 12,500 total flight
hours or less, and have been in service for 72 months or less from
entry into service or the last overhaul date: Within 6,500 flight
hours or 36 months, whichever comes first, after the effective date
of this AD.
    (2) For MLG assemblies that have accumulated more than 12,500
total flight hours, or have been in service for more than 72 months
from entry into service or the last overhaul date: Within 3,500
flight hours or 24 months, whichever occurs first, after the
effective date of this AD.

(h) Inspection of Certain Other MLG Dressed Shock Strut Assemblies and
Corrective Action

    For airplanes identified in paragraphs (c)(1) and (2) of this
AD, equipped with MLG dressed shock strut assemblies having part
numbers (P/Ns) 49000-25 through 49000-46 and P/Ns 49050-15 through
49050-22, on which the MLG active dynamic seal has been replaced
with the spare dynamic seal as specified in Bombardier CRJ700/705/
900/1000 Aircraft Maintenance Manual (AMM), CSP B-001, Task 32-11-
10-960-802, Revision 37, dated November 25, 2011, or earlier: At the
applicable time specified in paragraph (h)(1) or (2) of this AD, do
a detailed visual inspection of the MLG dressed shock strut
assemblies for corrosion, and all applicable corrective actions, in
accordance with Section 2., Part B, of the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-32-024, Revision
C.
    (1) For MLG assemblies that have accumulated 12,500 total flight
hours or less, and have been in service for 72 months or less from
entry into service or the last overhaul date: Within 6,500 flight
hours or 36 months, whichever comes first, after the effective date
of this AD.
    (2) For MLG assemblies that have accumulated more than 12,500
total flight hours, or have been in service for more than 72 months
from entry into service or the last overhaul date: Within 3,500
flight hours or 24 months, whichever occurs first, after the
effective date of this AD.

(i) Inspection of MLG Outer Cylinder at the Gland Nut Threads, Thread
Relief Groove, and Chamfer and Corrective Action

    For airplanes identified in paragraphs (c)(1) through (3) of
this AD equipped with MLG outer cylinder assemblies having part
numbers and serial numbers specified in Section 1.A., Effectivity,
of Bombardier Service Bulletin 670BA-32-052, dated February 9, 2015:
Within 6,500 flight hours or 36 months, whichever occurs first after
the effective date of this AD, do a detailed visual inspection of
the MLG shock strut outer cylinder assemblies, and do all other
required actions specified in, and in accordance with, Section 2. of
the Accomplishment Instructions of Bombardier Service Bulletin
670BA-32-052, dated February 9, 2015.

(j) Inspection of Certain MLG Forward and Aft Trunnion Pins, and
Corrective Action

    For airplanes identified in paragraphs (c)(1) through (3) of
this AD equipped with MLG forward and aft trunnion pins and grease
adapter assemblies having part numbers and serial numbers specified
in Section 1.A., Effectivity, of Bombardier Service Bulletin 670BA-
32-034, Revision B, dated December 21, 2018 (Bombardier Service
Bulletin 670BA-32-034, Revision B): At the applicable time specified
in paragraph (j)(1) or (2) of this AD, do a detailed visual
inspection of the MLG forward and aft trunnion pins and do all
applicable corrective actions, in accordance with Section 2.B. and
paragraphs 2.C.(6) and (8) of the Accomplishment Instructions of
Bombardier Service Bulletin 670BA-32-034, Revision B.
    Note 1 to the introductory text of paragraph (j): The corrective
action is applicable only to MLG forward and aft trunnion pins
having P/Ns 49101-9, -11, and -13 reworked from P/Ns 49101-1, -5,
and -7, as specified in the procedures in Goodrich Service Bulletin
49101-32-47, any revision. The corrective action is not applicable
to MLG forward and aft trunnion pins having P/Ns 49101-9, -11, and -
13 that were installed as original equipment or purchased from
Goodrich Landing Gear.
    (1) For MLG forward and aft trunnion pins and grease adapter
assemblies that have not had the procedures specified in Goodrich
Service Bulletin 49101-32-47, any revision, incorporated, at the
applicable time specified in paragraph (j)(1)(i) or (ii) of this AD.
    (i) For MLG forward and aft trunnion pins that have accumulated
10,000 total flight hours or less, and have been in service 60
months or less from the entry into service or last overhaul date:
Within 6,500 flight hours or 36 months, whichever occurs first,
after the effective date of this AD.
    (ii) For MLG forward and aft trunnion pins that have accumulated
more than 10,000 total flight hours, or have been in service for
more than 60 months from entry into service or last overhaul date:
Within 3,000 flight hours or 24 months, whichever occurs first,
after the effective date of this AD.
    (2) For MLG forward and aft trunnion pins that have had the
procedures specified in Goodrich Service Bulletin 49101-32-47, any
revision, incorporated: Within 6,500 flight hours or 36 months,
whichever occurs first, after the effective date of this AD.

(k) Inspection of Certain Other MLG Trunnion Pins Having P/Ns 49101-9,
49101-11, and 49101-13, Maintained Using Certain Maintenance
Instructions

    For airplanes identified in paragraphs (c)(1) through (3) of
this AD equipped with MLG forward and aft trunnion pins having P/Ns
49101-9, 49101-11, and 49101-13 that were maintained in accordance
with the tasks identified in paragraphs (k)(1) through (4) of this
AD: Within 6,500 flight hours or 36 months after the effective date
of this AD, whichever occurs first, do a detailed visual inspection
of the MLG forward and aft trunnion pins, and do all applicable
corrective actions, in accordance with Section 2. of the
Accomplishment

Instructions of Bombardier Service Bulletin 670BA-32-039, dated
February 29, 2012.
    Note 2 to the introductory text of paragraph (k): The corrective
action described in this paragraph is not applicable to MLG forward
and aft trunnion pins having P/Ns 49101-9, -11, and -13 reworked
from P/Ns 49101-1, -5, and -7 as specified in the procedures in
Goodrich SB 49101-32-47, any revision. The corrective action
described in this paragraph is applicable to MLG forward and aft
trunnion pins having P/Ns 49101-9, -11, and -13 installed as
original equipment or purchased from Goodrich Landing Gear.
    (1) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-
05-400-801 A01, Revision 31, dated March 20, 2010, or earlier.
    (2) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-
05-400-801 A02, Revision 34, dated November 20, 2010, or earlier.
    (3) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-
05-400-804 A01, Revision 35, dated March 20, 2011, or earlier.
    (4) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-
05-400-805 A01, Revision 35, dated March 20, 2011, or earlier.

(l) Credit for Previous Actions

    (1) This paragraph provides credit for actions required by
paragraph (g) of this AD, if those actions were performed before the
effective date of this AD using Section 2., Part A, of the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-
024, Revision B, dated December 19, 2012.
    (2) This paragraph provides credit for actions required by
paragraph (h) of this AD if those actions were performed before the
effective date of this AD using Section 2., Part B, of the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-
024, Revision B, dated December 19, 2012; or Bombardier CRJ700/705/
900/1000 AMM, CSP B-001, Task 32-11-10-960-802, Revision 38, dated
March 25, 2012.
    (3) This paragraph provides credit for actions required by
paragraph (j) of this AD if those actions were performed before the
effective date of this AD using Section 2.B. and paragraphs 2.C.(6)
and (8) of the Accomplishment Instructions of Bombardier Service
Bulletin 670BA-32-034, dated February 29, 2012; or Revision A, dated
August 17, 2012.
    (4) This paragraph provides credit for actions required by
paragraph (k) of this AD, if those actions were performed before the
effective date of this AD using the service information specified in
paragraphs (l)(4)(i) through (iv) of this AD.
    (i) Bombardier CRJ700/900/1000 AMM, CSP B-001, Task 32-11-05-
400-801 A01, Revision 38, dated March 25, 2012.
    (ii) Bombardier CRJ700/900/1000 AMM, CSP B-001, Task 32-11-05-
400-801 A02, Revision 38, dated March 25, 2012.
    (iii) Bombardier CRJ700/900/1000 AMM, CSP B-001, Task 32-11-05-
400-804 A01, Revision 37, dated November 25, 2011, for actions
specified in Section 2.B.(1) of the Accomplishment Instructions of
Bombardier Service Bulletin 670BA-32-039, dated February 29, 2012.
    (iv) Bombardier CRJ700/900/1000 AMM, CSP B-001, Task 32-11-05-
400-805 A01, Revision 37, dated November 25, 2011, for actions
specified in Section 2.B.(2) of the Accomplishment Instructions of
Bombardier Service Bulletin 670BA-32-039, dated February 29, 2012.

(m) No Requirement for Return of Parts

    Although certain service information referenced in this AD
specifies to return damaged MLG trunnion pins to Goodrich Landing
Gear, this AD does not include that requirement.

(n) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New
York 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 ATTN: Program Manager, Continuing Operational
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone<PHONE_NUMBER>; fax<PHONE_NUMBER>. 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.
    (2) Contacting the Manufacturer: For any requirement in this AD
to obtain instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, New York ACO
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or MHI RJ
Aviation ULC's TCCA Design Approval Organization (DAO). If approved
by the DAO, the approval must include the DAO-authorized signature.

(o) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) TCCA AD CF-2019-17R1, dated June 18, 2020, for related
information. This MCAI may be found in the AD docket on the internet
at https://www.regulations.gov by searching for and locating Docket
No. FAA-2021-0309.
    (2) For more information about this AD, contact: Darren
Gassetto, Aerospace Engineer, Mechanical Systems and Administrative
Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone<PHONE_NUMBER>; fax 516-794-
5531; email<EMAIL_ADDRESS>
(p) 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 this AD specifies otherwise.
    (i) Bombardier Service Bulletin 670BA-32-024, Revision C, dated
February 11, 2015.
    (ii) Bombardier Service Bulletin 670BA-32-034, Revision B, dated
December 21, 2018.
    (iii) Bombardier Service Bulletin 670BA-32-039, dated February
29, 2012.
    (iv) Bombardier Service Bulletin 670BA-32-052, dated February 9,
2015.
    (3) For service information identified in this AD, contact MHI
RJ Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel, Qu[eacute]bec J7N
1E1 Canada; Widebody Customer Response Center North America toll-
free telephone +1-844-272-2720 or direct-dial telephone +1-514-855-
8500; fax +1-514-855-8501; email<EMAIL_ADDRESS>internet https://eservices.aero.bombardier.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 September 30, 2021.
Ross Landes,
Deputy Director for Regulatory Operations, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-21830 Filed 10-5-21; 8:45 am]
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