[Federal Register Volume 85, Number 98 (Wednesday, May 20, 2020)]
[Rules and Regulations]
[Pages 30601-30604]
[FR Doc No: 2020-10629]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0452; Product Identifier 2020-NM-062-AD; Amendment
39-19910; AD 2020-09-14]
RIN 2120-AA64

Airworthiness Directives; Airbus SAS Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-03-
12, which applied to all Airbus SAS Model A350-941 and -1041 airplanes.
AD 2020-03-12 required revising the existing airplane flight manual
(AFM) to define a liquid-prohibited zone in the flight deck and provide
procedures following liquid spillage on the center pedestal. This AD
continues to require revising the existing AFM, and also requires
installing a removable integrated control panel (ICP) cover in the
flight deck and further revising the AFM to include instructions for
ICP cover use, as specified in a European Union Aviation Safety Agency
(EASA) AD, which is incorporated by reference. This AD was prompted by
the FAA's determination that a removable integrated control panel (ICP)
cover must be installed to prevent damage from spillage and that the
existing AFM must be revised. The FAA is issuing this AD to address the
unsafe condition on these products.

DATES: This AD becomes effective June 4, 2020.
    The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of June 4,
2020.
    The FAA must receive comments on this AD by July 6, 2020.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
     Fax:<PHONE_NUMBER>.
     Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
    For material incorporated by reference (IBR) in this AD, contact
the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49
221 89990 1000; email<EMAIL_ADDRESS>internet www.easa.europa.eu.
You may find this IBR material on the EASA website at https://ad.easa.europa.eu. You may view this IBR material 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 in the AD
docket on the internet at https://www.regulations.gov by searching for
and locating Docket No. FAA-2020-0452.

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-
0452; 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 AD, any comments received, and other information. The street
address for Docket Operations is listed above. Comments will be
available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Kathleen Arrigotti, Aerospace
Engineer, Large Aircraft Section, International Validation Branch, FAA,
2200 South 216th St., Des Moines, WA 98198; telephone and fax 206-231-
3218.

SUPPLEMENTARY INFORMATION:

Discussion

    The FAA issued AD 2020-03-12, Amendment 39-19837 (85 FR 7863,
February 12, 2020) (``AD 2020-03-12''), which applied to all Airbus SAS
Model A350-941 and -1041 airplanes. AD 2020-03-12 required revising the
existing AFM to define a liquid-prohibited zone in the flight deck and
provide procedures following liquid spillage on the center pedestal.
The FAA issued AD 2020-03-12 to address the potential for dual-engine
uncommanded engine inflight shutdown (IFSD), possibly resulting in a
forced landing with consequent damage to the airplane and injury to
occupants.

Actions Since AD 2020-03-12 Was Issued

    Since the FAA issued AD 2020-03-12, Airbus developed mod 116010,
introducing a removable cover for the ICP, which protects the ICP
completely, including engine master levers, thumbwheels, and rotary
knob, and provided modification instructions. Airbus also published a
new AFM temporary revision (TR) defining a liquid-prohibited zone in
the cockpit, procedures for ICP removable cover use, and the procedures
to be followed in the case of inadvertent liquid spillage on the center
pedestal. The FAA has determined that the removable ICP cover must be
installed and the existing AFM must be revised to include these new
procedures.
    The EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2020-0090, dated April 20, 2020
(``EASA AD 2020-0090'') (also referred to as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
condition for certain Airbus SAS Model A350-941 and -1041 airplanes.
EASA AD 2020-0090 supersedes EASA Emergency AD 2020-0020-E, dated
February 5, 2020, corrected February 6, 2020 (which corresponds to FAA
AD 2020-03-12).
    This AD was prompted by two reports of abnormal operation of the
components of the ENG START panel or Electronic Centralized Aircraft
Monitoring (ECAM) Control Panel (ECP) due to liquid spillage in the
system, and the subsequent uncommanded engine IFSD of one engine in
each case. This AD was also prompted by the FAA's determination that a
removable integrated control panel (ICP) cover must be installed to
prevent damage from spillage and that the existing AFM must be revised.
The FAA is issuing this AD to address the potential for dual-engine
IFSD, possibly resulting in a forced landing with consequent damage to
the airplane and injury to occupants. See the MCAI for additional
background information.

Explanation of Retained Requirements

    Although this AD does not explicitly restate the requirements of AD
2020-03-12, this AD retains all of the requirements of AD 2020-03-12.
Those requirements are referenced in EASA AD 2020-0090, which, in turn,
is referenced in paragraph (g) of this AD.

Related IBR Material Under 1 CFR Part 51

    EASA AD 2020-0090 describes procedures for installation of the ICP
removable cover in the cockpit and amendment of the AFM to define a
liquid-prohibited zone in the cockpit, provide procedures for ICP
removable cover use, and provide procedures following liquid spillage
on the center pedestal. This material 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.

FAA's Determination

    This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to the FAA's bilateral agreement with the State of Design Authority,
the FAA has been notified of the unsafe condition described in the MCAI
referenced above. The FAA is issuing this AD because the FAA has
evaluated all pertinent information and determined the unsafe condition
exists and is likely to exist or develop on other products of the same
type design.

Requirements of This AD

    This AD requires accomplishing the actions specified in EASA AD
2020-0090 described previously, as incorporated by reference, except
for any differences identified as exceptions in the regulatory text of
this AD.

Explanation of Required Compliance Information

    In the FAA's ongoing efforts to improve the efficiency of the AD
process, the FAA initially worked with Airbus and EASA to develop a
process to use certain EASA ADs as the primary source of information
for compliance with requirements for corresponding FAA ADs. The FAA has
since coordinated with other manufacturers and civil aviation
authorities (CAAs) to use this process. As a result, in EASA AD 2020-
0090 is incorporated by reference in this AD. This AD, therefore,
requires compliance with EASA AD 2020-0090 in its entirety, through
that incorporation, except for any differences identified as exceptions
in the regulatory text of this AD. Using common terms that are the same
as the heading of a particular section in the EASA AD does not mean
that operators need comply only with that section. For example, where
the AD requirement refers to ``all required actions and compliance
times,'' compliance with this AD requirement is not limited to the
section titled ``Required Action(s) and Compliance Time(s)'' in the
EASA AD. Service information specified in EASA AD 2020-0090 that is
required for compliance with EASA AD 2020-0090 is available on the
internet at https://www.regulations.gov by searching for and locating
Docket No. FAA-2020-0452.

Interim Action

    The FAA considers this AD interim action. If final action is later
identified, the FAA might consider further rulemaking then.

FAA's Justification and Determination of the Effective Date

    An unsafe condition exists that requires the immediate adoption of
this AD without providing an opportunity for public comments prior to
adoption. The FAA has found that the risk to the flying public
justifies waiving notice and comment prior to adoption of this rule
because abnormal operation of the components of the ENG START panel or
ECP due to liquid spillage in the system could result in dual-engine
IFSD, possibly resulting in a forced landing with consequent damage to
the airplane and injury to occupants. Therefore, the FAA finds good
cause that notice and opportunity for prior public comment are
impracticable. In addition, for the reasons stated above, the FAA finds
that good cause exists for making this amendment effective in less than
30 days.

Regulatory Flexibility Act (RFA)

    The requirements of the RFA do not apply when an agency finds good
cause pursuant to 5 U.S.C. 553 to adopt a rule without prior notice and
comment. Because the FAA has determined that it has good cause to adopt
this rule without notice and comment, RFA analysis is not required.

Comments Invited

    This AD is a final rule that involves requirements affecting flight
safety, and the FAA did not precede it by notice and opportunity for
public comment. The FAA invites you to send any written relevant data,
views, or arguments about this AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2020-0452;
Product Identifier 2020-NM-062-AD'' at the beginning of your comments.
The FAA specifically invites comments on the overall regulatory,
economic, environmental, and energy aspects of this AD. The FAA will
consider all comments received by the closing date and may amend this
AD based on those comments.
    The FAA will post all comments received, without change, to https://www.regulations.gov, including any personal information you provide.
The FAA will also post a report summarizing each substantive verbal
contact received about this AD.

Costs of Compliance

    The FAA estimates that this AD affects 13 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                Cost per      Cost on U.S.
                Actions                        Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Retained actions from AD 2020-03-12...  1 work-hour x $85 per                 $0             $85          $1,105
                                         hour = $85.
New actions...........................  2 work-hours x $85 per               * 0             170           2,210
                                         hour = $170.
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* The FAA has received no definitive data regarding cost estimates for these parts.

    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 individuals. The FAA does not control warranty coverage for
affected individuals. As a result, the FAA has included all known costs
in our 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

    The FAA determined that 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; and
    (2) Will not affect intrastate aviation in Alaska.

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 removing airworthiness directive (AD)
2020-03-12, Amendment 39-19837 (85 FR 7863, February 12, 2020), and
adding the following new AD:

2020-09-14 Airbus SAS: Amendment 39-19910; Docket No. FAA-2020-0452;
Product Identifier 2020-NM-062-AD.

(a) Effective Date

    This AD becomes effective June 4, 2020.

(b) Affected ADs

    This AD replaces AD 2020-03-12, Amendment 39-19837 (85 FR 7863,
February 12, 2020) (``AD 2020-03-12'').

(c) Applicability

    This AD applies to Airbus SAS Model A350-941 and -1041
airplanes, certificated in any category, as identified in European
Union Aviation Safety Agency (EASA) AD 2020-0090, dated April 20,
2020 (``EASA AD 2020-0090'').

(d) Subject

    Air Transport Association (ATA) of America Code 31, Instruments.

(e) Reason

    This AD was prompted by two reports of abnormal operation of the
components of the ENG START panel or Electronic Centralized Aircraft
Monitoring (ECAM) Control Panel (ECP) due to liquid spillage in the
system, and the subsequent uncommanded engine inflight shutdown
(IFSD) of one engine in each case. This AD was also prompted by the
FAA's determination that a removable integrated control panel (ICP)
cover must be installed to prevent damage from spillage and the
existing AFM must be revised. The FAA is issuing this AD to address
the potential for dual-engine IFSD, possibly resulting in a forced
landing with consequent damage to the airplane and injury to
occupants.

(f) Compliance

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

(g) Requirements

    Except as specified in paragraph (h) of this AD: Comply with all
required actions and compliance times specified in, and in
accordance with, EASA AD 2020-0090.

(h) Exceptions to EASA AD 2020-0090

    (1) Where EASA AD 2020-0090 refers to ``the effective date of
EASA AD 2020-0020-E,'' this AD requires using February 14, 2020 (the
effective date of AD 2020-03-12).
    (2) Where EASA AD 2020-0090 refers to its effective date, this
AD requires using the effective date of this AD.
    (3) ``Note 1'' of EASA AD 2020-0090 does not apply to this AD.
However, after the actions required by paragraph (g) of this AD have
been accomplished on an airplane, that airplane may be operated with
a damaged or missing ICP removable cover, provided provisions that
address the ICP removable cover are included in the operator's
approved minimum equipment list (MEL).
    (4) The ``Remarks'' section of EASA AD 2020-0090 does not apply
to this AD.

(i) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager,
Large Aircraft Section, International Validation 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 Large Aircraft Section, International Validation
Branch, send it to the attention of the person identified in
paragraph (j) of this AD. Information may be emailed to<EMAIL_ADDRESS>    (i) 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.
    (ii) AMOCs approved previously for AD 2020-03-12 are approved as
AMOCs for the corresponding provisions of EASA AD 2020-0090 that are
required by paragraph (g) of this AD.
    (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, Large Aircraft
Section, International Validation Branch, FAA; or EASA; or Airbus
SAS's EASA Design Organization Approval (DOA). If approved by the
DOA, the approval must include the DOA-authorized signature.
    (3) Required for Compliance (RC): For any service information
referenced in EASA AD 2020-0090 that contains RC procedures and
tests: Except as required by paragraph (i)(2) of this AD, RC
procedures and tests must be done to comply with this AD; any
procedures or tests that are not identified as RC are recommended.
Those procedures and tests that are not identified as RC may be
deviated from using accepted methods in accordance with the
operator's maintenance or inspection program without obtaining
approval of an AMOC, provided the procedures and tests identified as
RC can be done and the airplane can be put back in an airworthy
condition. Any substitutions or changes to procedures or tests
identified as RC require approval of an AMOC.

(j) Related Information

    For more information about this AD, contact Kathleen Arrigotti,
Aerospace Engineer, Large Aircraft Section, International Validation
Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone
and fax<PHONE_NUMBER>.

(k) 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) European Union Aviation Safety Agency (EASA) AD 2020-0090,
dated April 20, 2020.
    (ii) [Reserved]
    (3) For information about EASA AD 2020-0090, contact the EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221
89990 6017; email<EMAIL_ADDRESS>Internet www.easa.europa.eu.
You may find this EASA AD on the EASA website at https://ad.easa.europa.eu.
    (4) You may view this material 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>. This material may be found in the AD
docket on the internet at https://www.regulations.gov by searching
for and locating Docket No. FAA-2020-0452.
    (5) You may view this material 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 May 6, 2020.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2020-10629 Filed 5-19-20; 8:45 am]
BILLING CODE 4910-13-P


[Federal Register Volume 84, Number 48 (Tuesday, March 12, 2019)]
[Rules and Regulations]
[Pages 8802-8805]
[FR Doc No: 2019-04388]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0624; Product Identifier 2013-NE-24-AD; Amendment
39-19583; AD 2019-05-01]
RIN 2120-AA64

Airworthiness Directives; Pratt & Whitney Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are superseding Airworthiness Directive (AD) 2017-11-06,
for all Pratt & Whitney (PW) PW2037, PW2037D, PW2037M, PW2040, PW2040D,
PW2043, PW2143, PW2643, and F117-PW-100 turbofan engine models. AD
2017-11-06 required initial and repetitive on-wing eddy current
inspections (ECIs) of affected engines with certain diffuser and high-
pressure turbine (HPT) cases installed. AD 2017-11-06 also required a
fluorescent-penetrant inspection (FPI) of the diffuser case rear flange
and the HPT case front flange. This AD requires an on-wing ECI of all
diffuser case M-flange replacement repairs. This AD was prompted by a
rupture of the diffuser-to-HPT case flange. We are issuing this AD to
address the unsafe condition on these products.

DATES: This AD is effective April 16, 2019.
    The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of April 16,
2019.
    The Director of the Federal Register approved the incorporation by
reference of a certain other publication listed in this AD as of July
18, 2017 (82 FR 26979, June 13, 2017).

ADDRESSES: For service information identified in this final rule,
contact Pratt & Whitney, 400 Main St., East Hartford, CT 06118; phone:
860-565-0140; fax:<PHONE_NUMBER>; email<EMAIL_ADDRESS>internet:
http://fleetcare.pw.utc.com. You may view this service information at
the FAA, Engine & Propeller Standards Branch, 1200 District Avenue,
Burlington, MA 01803. For information on the availability of this
material at the FAA, call<PHONE_NUMBER>. It is also available on the
internet at http://www.regulations.gov by searching for and locating
Docket No. FAA-2018-0624.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0624; 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, the regulatory evaluation, any comments received and
other information. The address for Docket Operations (phone: 800-647-
5527) is Document Operations, 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: Kevin M. Clark, Aerospace Engineer,
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone:
781-238-7088; fax:<PHONE_NUMBER>; email<EMAIL_ADDRESS>
SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2017-11-06, Amendment 39-18905 (82 FR 26979,
June 13, 2017), (``AD 2017-11-06''). AD 2017-11-06 applied to all Pratt
& Whitney (PW) PW2037, PW2037D, PW2037M, PW2040, PW2040D, PW2043,
PW2143, PW2643, and F117-PW-100 turbofan engine models. The NPRM
published in the Federal Register on October 10, 2018 (83 FR 50860).
The NPRM was prompted by a rupture of the diffuser-to-HPT case flange.
The NPRM proposed to require an on-wing ECI of all diffuser case M-
flange replacement repairs. We are issuing this AD to address the
unsafe condition on these products.

Comments

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

Request To Allow FPI for Small Crack Indications

    United Airlines requested that we allow FPI for small indication
conditions as shown in Table 3 of Pratt & Whitney Alert Service
Bulletin (ASB) No. PW2000 A72-765, Revision No. 4, dated January 25,
2018.
    We partially agree. While we agree that FPI may be an acceptable
method to detect these smaller indication cracks, we disagree with
requiring FPI because we have not reviewed the desired FPI method or
were not informed how well FPI indicates these small cracks versus ECI.
We will consider requests for Alternative Methods of Compliance (AMOCs)
for FPI. We did not change this AD.

Request To Focus on Wrought Diffuser Case M-Flanges

    Delta Air Lines (Delta) requested that we update the Summary and
the Required Actions paragraphs of this AD to include ``that result in
a wrought diffuser case M-flange'' language to focus on repairs that
resulted in a wrought material.
    We disagree. We disagree with focusing only on wrought repairs
because all known diffuser case M-flange replacement repairs use
wrought material. We will consider further rulemaking action if future
diffuser case M-flange replacement repairs use another material. We did
not change this AD.

Request To Specify Wrought M-Flange Repairs Do Not Change Part Number

    Delta requested that we update the Discussion paragraph to include
``by part number'' in the statement:

``repaired wrought flanges cannot be distinguished from other wrought
flanges or from non-repaired flanges on diffuser cases installed on the
affected engines.'' While the M-flange replacement repair displays a
weld line around the circumference of the diffuser case, Delta reasoned
that wrought M-flange repairs introduced by the diffuser case M-flange
replacement repair do not change the part number (P/N) and, therefore,
pose challenges for tracking the repaired diffuser cases.
    We partially agree. We agree that the lack of a P/N for the wrought
M-flange repair poses challenges for tracking the engines with an M-
flange replacement repair. We disagree with modifying the Discussion
paragraph because this discussion is not included in this final rule.

Request To Update the Service Information Description

    Delta requested that we update the service information description
in the Related Service Information Under 1 CFR part 51 paragraph to
``The [Pratt & Whitney] ASB describes procedures for repetitive ECIs of
the diffuser case M-flange.'' Delta reasoned that the ASB also provides
procedures for off-wing ECIs and that the inspection is for the
diffuser case M-flange, and not the diffuser case assembly.
    We agree. We updated the service information description in the
Related Service Information under 1 CFR part 51 paragraph in this AD.

Request To Revise Previous Credit Paragraph

    Delta requested that we update the service information in the
Credit for Previous Actions paragraph of this AD to include ``Pratt &
Whitney Service Bulletin (SB) No. PW2000 72-763, Revision No. 1, dated
August 30, 2013, or an earlier version.'' and ``Pratt & Whitney ASB No.
PW2000 A72-765, Revision No. 4, dated January 25, 2018, or an earlier
version.'' Delta reasoned that the language of the NPRM would void
inspections completed using the most recent service information.
    We disagree. Inspections already completed using the version of the
service information specified in this AD are considered ``already
done'' per paragraph (f) of this AD. We did not change this AD.

Support for the AD

    The Air Line Pilots Association International and FedEx Express
expressed support for the NPRM as written. The Boeing Company reviewed
the NPRM and had no comments.

Conclusion

    We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this AD with the changes described previously and minor editorial
changes. We have 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.
    We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    We reviewed Pratt & Whitney SB No. PW2000 72-763, Revision No. 1,
dated August 30, 2013. The SB describes procedures for a one-time ECI
inspection of the engine diffuser case. We also reviewed Pratt &
Whitney ASB No. PW2000 A72-765, Revision No. 4, dated January 25, 2018.
The ASB describes procedures for repetitive ECIs of the diffuser case
M-flange. 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

    We estimate that this AD affects 910 engines installed on airplanes
of U.S. registry. Based on the diffuser case identified in paragraph
(g)(1) of this AD, we estimate that 339 engines will be required to
perform the on-wing ECI inspection. We estimate that all 910 engines
will be required to perform the FPI inspection.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                Cost on U.S.
              Action                    Labor cost        Parts cost      Cost per product        operators
----------------------------------------------------------------------------------------------------------------
On-wing/module ECI Inspection....  8 work-hours x $85               $0  $680...............  $230,520 per
                                    per hour = $680.                                          inspection cycle.
FPI Inspection...................  3 work-hours x $85               20  275 per inspection   250,250 per
                                    per hour = $255.                     cycle.               inspection cycle.
----------------------------------------------------------------------------------------------------------------

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.
    We are 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.
    This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to engines, propellers, and
associated appliances to the Manager, Engine and Propeller Standards
Branch, Policy and Innovation Division.

Regulatory Findings

    We have determined that 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) Is not a ``significant rule'' under DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) 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 removing Airworthiness Directive (AD)
2017-11-06, Amendment 39-18905 (82 FR 26979, June 13, 2017), and adding
the following new AD:

2019-05-01 Pratt & Whitney Division: Amendment 39-19583; Docket No.
FAA-2018-0624; Product Identifier 2013-NE-24-AD.

(a) Effective Date

    This AD is effective April 16, 2019.

(b) Affected ADs

    This AD replaces AD 2017-11-06, Amendment 39-18905 (82 FR 26979,
June 13, 2017).

(c) Applicability

    This AD applies to all Pratt & Whitney (PW) PW2037, PW2037D,
PW2037M, PW2040, PW2040D, PW2043, PW2143, PW2643, and F117-PW-100
turbofan engines.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7200, Turbine/
Turboprop Engine.

(e) Unsafe Condition

    This AD was prompted by a rupture of the diffuser-to-high-
pressure turbine (HPT) case flange. We are issuing this AD to
prevent failure of the diffuser-to-HPT case flange. The unsafe
condition, if not addressed, could result in uncontained diffuser-
to-HPT case flange release, damage to the engine, and damage to the
airplane.

(f) Compliance

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

(g) Required Actions

    (1) For diffuser case, part number (P/N) 1B7461, serial numbers
(S/Ns) DGGUAK1306 and DGGUAK1308, and HPT case, P/N 1B2440, S/N
DKLBCS1032:
    (i) Within 100 flight cycles after the effective date of this
AD, perform an eddy current inspection (ECI) of the diffuser case
and the HPT case M-flange in accordance with PW Service Bulletin
(SB) No. PW2000 72-763, Revision No. 1, dated August 30, 2013.
    (ii) [Reserved]
    (2) For all diffuser and HPT cases, at the next piece-part
opportunity after the effective date of this AD and every piece-part
opportunity thereafter, perform a high sensitivity fluorescent-
penetrant inspection (FPI) of the entire diffuser case rear flange
(M-flange) and bolt holes, and the entire HPT case forward flange
(M-flange) and bolt holes.
    (3) For all diffuser cases installed on any affected engine
model except for F117-PW-100 turbofan engines, that have not
incorporated PW SB PW2000-72-364, have incorporated PW SB PW2000-72-
700, or have had an M-flange replacement, perform initial and
repetitive ECIs of the diffuser case M-flange as follows:
    (i) Perform an initial ECI in accordance with the ``Last Shop
Visit Activity'' column and before exceeding the maximum cycles
since the last shop visit activity in the ``Initial Inspection''
column of Table 1 of PW Alert Service Bulletin (ASB) No. PW2000 A72-
765, Revision No. 4, dated January 25, 2018, or within 1,000 cycles
from the effective date of this AD, whichever occurs later.
    (ii) Evaluate the inspection results and perform re-inspections
as necessary in accordance with Accomplishment Instructions, ``For
Engines Installed on the Aircraft,'' paragraph 5, or the
Accomplishment Instructions, ``For Engines Removed from the
Aircraft,'' paragraph 4, of PW ASB No. PW2000 A72-765, Revision No.
4, dated January 25, 2018, as applicable. If given a cycle range,
perform the subsequent inspections before exceeding the maximum
number of cycles.
    (iii) Inspect the diffuser case M-flange using, as applicable,
either the Accomplishment Instructions, ``For Engines Installed on
the Aircraft,'' paragraphs 3.I. through 3.J., or the Accomplishment
Instructions, ``For Engines Removed from the Aircraft,'' paragraphs
3.D. through 3.E., of PW ASB No. PW2000 A72-765, Revision No. 4,
dated January 25, 2018.

(h) Definition

    For the purpose of this AD, a ``piece-part opportunity'' is
defined as when the part is completely disassembled.

(i) Credit for Previous Actions

    (1) You may take credit for the diffuser case and HPT case
inspections required by paragraphs (g)(1) and (3) of this AD if you
performed:
    (i) An ECI of the diffuser case and the HPT case M-flange using
the Accomplishment Instructions of PW SB No. PW2000 72-763, Original
Issue, dated March 22, 2013, or
    (ii) a high sensitivity FPI of the diffuser case and the HPT
case at a piece-part opportunity after January 1, 2010.
    (2) You may take credit for only the diffuser case inspections
required by paragraphs (g)(1) and (3) of this AD if you performed an
ECI of the diffuser case M-flange using the Accomplishment
Instructions of PW ASB No. PW2000 A72-765, Revision No. 3, dated
December 19, 2017, or an earlier version.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO 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) of this AD. You may email your request
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) AMOCs approved for AD 2017-11-06 (82 FR 26979, June 13,
2017) are approved as AMOCs for the corresponding provisions of this
AD.

(k) Related Information

    For more information about this AD, contact Kevin M. Clark,
Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone:<PHONE_NUMBER>; fax:<PHONE_NUMBER>; email:
<EMAIL_ADDRESS>
(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.
    (3) The following service information was approved for IBR on
April 16, 2019.
    (i) Pratt & Whitney (PW) Alert Service Bulletin No. PW2000 A72-
765, Revision No. 4, dated January 25, 2018.
    (ii) [Reserved]
    (4) The following service information was approved for IBR on
July 18, 2017.
    (i) PW Service Bulletin No. PW2000 72-763, Revision No. 1, dated
August 30, 2013.
    (ii) [Reserved]
    (5) For PW service information identified in this AD, contact
Pratt & Whitney, 400 Main St., East Hartford, CT 06118; phone: 860-
565-0140; fax:<PHONE_NUMBER>; email<EMAIL_ADDRESS>internet:
http://fleetcare.pw.utc.com.
    (6) You may view this service information at FAA, Engine and
Propeller Standards Branch, 1200 District Avenue, Burlington,

MA 01803. For information on the availability of this material at
the FAA, call<PHONE_NUMBER>.
    (7) 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, call<PHONE_NUMBER>, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Burlington, Massachusetts, on March 6, 2019.
Karen M. Grant,
Acting Manager, Engine and Propeller Standards Branch, Aircraft
Certification Service.
[FR Doc. 2019-04388 Filed 3-11-19; 8:45 am]
 BILLING CODE 4910-13-P