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Proposed Rule2022-11354

Airworthiness Directives; General Electric Company Turbofan Engines

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Published

June 1, 2022

Issuing agencies

Transportation DepartmentFederal Aviation Administration

Abstract

The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) GEnx-1B and GEnx-2B model turbofan engines. This proposed AD was prompted by the detection of melt-related freckles in the forgings and billets, which may reduce the life of certain compressor discharge pressure (CDP) seals, interstage seals, high-pressure turbine (HPT) rotor stage 2 disks, and stages 6-10 compressor rotor spools. This proposed AD would require revising the airworthiness limitations section (ALS) of the applicable GEnx-1B and GEnx-2B Engine Manual (EM) and the operator's existing approved maintenance program or inspection program, as applicable, to incorporate reduced life limits for these parts. The FAA is proposing this AD to address the unsafe condition on these products.

Full Text

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<title>Federal Register, Volume 87 Issue 105 (Wednesday, June 1, 2022)</title>
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[Federal Register Volume 87, Number 105 (Wednesday, June 1, 2022)]
[Proposed Rules]
[Pages 33071-33075]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-11354]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0467; Project Identifier AD-2022-00174-E]
RIN 2120-AA64

Airworthiness Directives; General Electric Company Turbofan
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain General Electric Company (GE) GEnx-1B and GEnx-2B model
turbofan engines. This proposed AD was prompted by the detection of
melt-related freckles in the forgings and billets, which may reduce the
life of certain compressor discharge pressure (CDP) seals, interstage
seals, high-pressure turbine (HPT) rotor stage 2 disks, and stages 6-10
compressor rotor spools. This proposed AD would require revising the
airworthiness limitations section (ALS) of the applicable GEnx-1B and
GEnx-2B Engine Manual (EM) and the operator's existing approved
maintenance program or inspection program, as applicable, to
incorporate reduced life limits for these parts. The FAA is proposing
this AD to address the unsafe condition on these products.

DATES: The FAA must receive comments on this proposed AD by July 18,
2022.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
<bullet> Federal eRulemaking Portal: Go to <a href="https://www.regulations.gov">https://www.regulations.gov</a>. Follow the instructions for submitting comments.
<bullet> Fax: (202) 493-2251.
<bullet> 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.
<bullet> Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact General
Electric Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513)
552-3272; email: <a href="/cdn-cgi/l/email-protection#5d3c2b343c29343233733b313838292e282d2d322f291d3c38733a38733e3230">[email&#160;protected]</a>; website: <a href="https://www.ge.com">https://www.ge.com</a>. You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 1200
District Avenue, Burlington, MA 01803. For information on the
availability of this material at the FAA, call (817) 222-5110.

Examining the AD Docket

You may examine the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2022-0467; 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 NPRM, any comments
received, and other information. The street address for Docket
Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Alexei Marqueen, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7178; email: <a href="/cdn-cgi/l/email-protection#7f3e131a071a16512b51321e0d0e0a1a1a113f191e1e51181009">[email&#160;protected]</a>.

SUPPLEMENTARY INFORMATION:

Comments Invited

The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2022-0467; Project Identifier
AD-2022-00174-E'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR

[[Page 33072]]

11.35, the FAA will post all comments received, without change, to
<a href="https://www.regulations.gov">https://www.regulations.gov</a>, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.

Confidential Business Information

CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Alexei Marqueen, Aviation Safety Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.

Background

The FAA was notified by the engine manufacturer of the detection of
melt-related freckles in the forgings and billets, which may reduce the
life of certain CDP seals, interstage seals, HPT rotor stage 2 disks,
and stages 6-10 compressor rotor spools (life-limited parts (LLPs)) on
GEnx-1B54/P2, GEnx-1B58/P2, GEnx-1B64/P2, GEnx-1B67/P2, GEnx-1B70/P2,
GEnx-1B70C/P2, GEnx-1B70/72/P2, GEnx-1B70/75/P2, GEnx-1B74/75/P2, GEnx-
1B75/P2, GEnx-1B76/P2, GEnx-1B76A/P2, and GEnx-1B78/P2 (GEnx-1B) and
GEnx-2B67, GEnx-2B67B, and GEnx-2B67/P (GEnx-2B) model turbofan
engines. The manufacturer's investigation determined that, as a result
of such freckles forming in the forgings and billets, certain LLPs may
have undetected subsurface anomalies that developed during the
manufacturing process, resulting in reduced material properties and a
lower fatigue life capability. Reduced material properties may cause
premature LLP fracture, which could result in uncontained debris
release. As a result of its investigation, the manufacturer determined
the need to reduce the life limits of certain LLPs. To reflect these
reduced life limits, the manufacturer revised the ALS of the affected
GEnx-1B and GEnx-2B EMs. The FAA is proposing to require operators to
update the ALS of the applicable GEnx-1B and GEnx-2B EM with the
reduced life limits for certain LLPs. This condition, if not addressed,
could result in uncontained debris release, damage to the engine, and
damage to the airplane.

FAA's Determination

The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.

Related Service Information

The FAA reviewed GE GEnx-1B Service Bulletin (SB) 72-0484 R00,
dated August 11, 2021, and GE GEnx-2B SB 72-0423 R00, dated August 11,
2021. These SBs, differentiated by engine model, provide the reduced
life limits for certain LLPs.

Proposed AD Requirements in This NPRM

This proposed AD would require revising the ALS of the applicable
GEnx-1B and GEnx-2B EM and the operator's existing approved maintenance
program or inspection program, as applicable, to incorporate reduced
life limits for certain LLPs.

Differences Between This Proposed AD and the Service Information

GE GEnx-2B Service Bulletin (SB) 72-0423 R00, dated August 11,
2021, uses the term ``HPT stage 2 disk'' to describe HPT stage 2 disk
P/N 2383M86P02, while this proposed AD uses the term ``HPT rotor stage
2 disk.''

Costs of Compliance

The FAA estimates that this AD, if adopted as proposed, would
affect 390 engines installed on airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed
AD:

Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Revise ALS of EM and the operator's 1 work-hour x $85 per $0 $85 $33,150
existing approved maintenance or hour = $85.
inspection program.
----------------------------------------------------------------------------------------------------------------

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 proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would 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.

[[Page 33073]]

The Proposed Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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:

General Electric Company: Docket No. FAA-2022-0467; Project
Identifier AD-2022-00174-E.

(a) Comments Due Date

The FAA must receive comments on this airworthiness directive
(AD) by July 18, 2022.

(b) Affected ADs

None.

This AD applies to General Electric Company (GE) GEnx-1B54/P2,
GEnx-1B58/P2, GEnx-1B64/P2, GEnx-1B67/P2, GEnx-1B70/P2, GEnx-1B70C/
P2, GEnx-1B70/72/P2, GEnx-1B70/75/P2, GEnx-1B74/75/P2, GEnx-1B75/P2,
GEnx-1B76/P2, GEnx-1B76A/P2, GEnx-1B78/P2, GEnx-2B67, GEnx-2B67B,
and GEnx-2B67/P model turbofan engines.

(d) Subject

Joint Aircraft System Component (JASC) Code 7230, Turbine Engine
Compressor Section, and JASC Code 7250, Turbine Section.

(e) Unsafe Condition

This AD was prompted by the detection of melt-related freckles
in the forgings and billets, which may reduce the life of certain
compressor discharge pressure (CDP) seals, interstage seals, high-
pressure turbine (HPT) rotor stage 2 disks, and stages 6-10
compressor rotor spools. The FAA is issuing this AD to prevent
failure of the CDP seal, interstage seal, HPT rotor stage 2 disk,
and stages 6-10 compressor rotor spool. The unsafe condition, if not
addressed, could result in uncontained debris 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 all affected GEnx-1B model turbofan engines, within 90
days after the effective date of this AD, revise the airworthiness
limitations section (ALS) of the existing GEnx-1B Engine Manual (EM)
and the operator's existing approved maintenance program or
inspection program, as applicable, by inserting the following
information into the applicable table for their respective part
numbers:
(i) For stages 6-10 compressor rotor spool part number (P/N)
2628M56G01, insert the information in Table 1 to paragraph (g)(1)(i)
of this AD.

Table 1 to Paragraph (g)(1)(i)--Stages 6-10 Compressor Rotor Spool P/N 2628M56G01
--------------------------------------------------------------------------------------------------------------------------------------------------------
Life cycles Life cycles
-1B58/P2 - -1B70/72/P2
Part name Part No. Life cycles 1B64/P2 - Life cycles -1B70/75/P2 Life cycles Life cycles Life cycles
-1B54/P2 1B67/P2 - -1B70C/P2 -1B74/75/P2 -1B76/P2 -1B76A/P2 -1B78/P2
1B70/P2 -1B75/P2
--------------------------------------------------------------------------------------------------------------------------------------------------------
Spool, Stage 6-10................... 2628M56G01 For part 17,000 17,000 15,000 15,000 14,600 12,200 14,600
serial numbers NOT
listed in GEnx-1B SB
72-0484, latest
revision.
Spool, Stage 6-10................... 2628M56G01 For part 10,300 10,300 10,300 10,300 8,500 8,500 8,500
serial numbers listed
in Table 1 of GEnx-1B
SB 72-0484, latest
revision.
Spool, Stage 6-10................... 2628M56G01 For part 5,700 5,700 5,700 5,700 4,800 4,800 4,800
serial numbers listed
in Table 2 of GEnx-1B
SB 72-0484, latest
revision.
--------------------------------------------------------------------------------------------------------------------------------------------------------

(ii) For CDP seal P/N 2383M82P03, insert the information in
Table 2 to paragraph (g)(1)(ii) of this AD.

Table 2 to Paragraph (g)(1)(ii)--CDP Seal P/N 2383M82P03
--------------------------------------------------------------------------------------------------------------------------------------------------------
Life cycles Life cycles
-1B58/P2 - -1B70/72/P2
Part name Part No. Life cycles 1B64/P2 - Life cycles -1B70/75/P2 Life cycles Life cycles Life cycles
-1B54/P2 1B67/P2 - -1B70C/P2 -1B74/75/P2 -1B76/P2 -1B76A/P2 -1B78/P2
1B70/P2 -1B75/P2
--------------------------------------------------------------------------------------------------------------------------------------------------------
Seal, CDP........................... 2383M82P03 For part 20,000 20,000 15,000 15,000 15,000 15,000 15,000
serial numbers NOT
listed in GEnx-1B SB
72-0484, latest
revision.
Seal, CDP........................... 2383M82P03 For part 6,100 6,100 6,100 6,100 5,300 5,300 5,300
serial numbers listed
in Table 3 of GEnx-1B
SB 72-0484, latest
revision.
Seal, CDP........................... 2383M82P03 For part 13,400 13,400 13,400 13,400 9,300 9,300 9,300
serial numbers listed
in Table 4 of GEnx-1B
SB 72-0484, latest
revision.
Seal, CDP........................... 2383M82P03 For part 3,600 3,600 3,600 3,600 2,900 2,900 2,900
serial numbers listed
in Table 5 of GEnx-1B
SB 72-0484, latest
revision.
--------------------------------------------------------------------------------------------------------------------------------------------------------

(iii) For interstage seal P/N 2383M85P04, insert the information
in Table 3 to paragraph (g)(1)(iii) of this AD.

[[Page 33074]]

Table 3 to Paragraph (g)(1)(iii)--Interstage Seal P/N 2383M85P04
--------------------------------------------------------------------------------------------------------------------------------------------------------
Life cycles Life cycles
-1B58/P2 - -1B70/72/P2
Part name Part No. Life cycles 1B64/P2 - Life cycles -1B70/75/P2 Life cycles Life cycles Life cycles
-1B54/P2 1B67/P2 - -1B70C/P2 -1B74/75/P2 -1B76/P2 -1B76A/P2 -1B78/P2
1B70/P2 -1B75/P2
--------------------------------------------------------------------------------------------------------------------------------------------------------
Seal, Interstage.................... 2383M85P04 For part 17,000 15,000 15,000 15,000 14,200 14,800 14,200
serial numbers NOT
listed in GEnx-1B SB
72-0484, latest
revision.
Seal, Interstage.................... 2383M85P04 For part 10,500 10,500 10,500 10,500 6,400 6,400 6,400
serial numbers listed
in Table 6 of GEnx-1B
SB 72-0484, latest
revision.
Seal, Interstage.................... 2383M85P04 For part 15,000 15,000 15,000 15,000 10,500 10,500 10,500
serial numbers listed
in Table 7 of GEnx-1B
SB 72-0484, latest
revision.
Seal, Interstage.................... 2383M85P04 For part 5,500 5,500 5,500 5,500 2,800 2,800 2,800
serial numbers listed
in Table 8 of GEnx-1B
SB 72-0484, latest
revision.
--------------------------------------------------------------------------------------------------------------------------------------------------------

(iv) For HPT rotor stage 2 disk P/N 2383M86P02, insert the
information in Table 4 to paragraph (g)(1)(iv) of this AD.

Table 4 to Paragraph (g)(1)(iv)--HPT Rotor Stage 2 Disk P/N 2383M86P02
--------------------------------------------------------------------------------------------------------------------------------------------------------
Life cycles Life cycles
-1B58/P2 - -1B70/72/P2
Part name Part No. Life cycles 1B64/P2 - Life cycles -1B70/75/P2 Life cycles Life cycles Life cycles
-1B54/P2 1B67/P2 - -1B70C/P2 -1B74/75/P2 -1B76/P2 -1B76A/P2 -1B78/P2
1B70/P2 -1B75/P2
--------------------------------------------------------------------------------------------------------------------------------------------------------
Disk, Stage 2....................... 2383M86P02 For part 12,100 12,100 10,400 10,400 9,500 6,800 9,500
serial numbers NOT
listed in GEnx-1B SB
72-0484, latest
revision.
Disk, Stage 2....................... 2383M86P02 For part 6,900 6,900 6,900 6,900 5,100 5,100 5,100
serial numbers listed
in Table 9 of GEnx-1B
SB 72-0484, latest
revision.
Disk, Stage 2....................... 2383M86P02 For part 10,400 10,400 10,400 10,400 7,500 6,800 7,500
serial numbers listed
in Table 10 of GEnx-
1B SB 72-0484, latest
revision.
Disk, Stage 2....................... 2383M86P02 For part 3,800 3,800 3,800 3,800 3,000 3,000 3,000
serial numbers listed
in Table 11 of GEnx-
1B SB 72-0484, latest
revision.
--------------------------------------------------------------------------------------------------------------------------------------------------------

(2) For all affected GEnx-2B model turbofan engines, within 90
days after the effective date of this AD, revise the ALS of the
existing GEnx-2B EM and the operator's existing approved maintenance
program or inspection program, as applicable, by inserting the
following information into the applicable table for their respective
part numbers:
(i) For stages 6-10 compressor rotor spool P/N 2628M56G01,
insert the information in Table 5 to paragraph (g)(2)(i) of this AD.

Table 5 to Paragraph (g)(2)(i)--Stages 6-10 Compressor Rotor Spool P/N 2628M56G01
----------------------------------------------------------------------------------------------------------------
Life cycles - Life cycles - Life cycles -
Part name Part No. 2B67 2B67B 2B67/P
----------------------------------------------------------------------------------------------------------------
Spool, Stage 6-10.................... 2628M56G01 For part .............. .............. 11,100
serial numbers NOT
listed in GEnx-2B SB 72-
0423, latest revision.
Spool, Stage 6-10.................... 2628M56G01 For part .............. .............. 10,300
serial numbers listed in
Table 1 of GEnx-2B SB 72-
0423, latest revision.
Spool, Stage 6-10.................... 2628M56G01 For part .............. .............. 5,700
serial numbers listed in
Table 2 of GEnx-2B SB 72-
0423, latest revision.
----------------------------------------------------------------------------------------------------------------

(ii) For CDP seal P/N 2383M82P03, insert the information in
Table 6 to paragraph (g)(2)(ii) of this AD.

Table 6 to Paragraph (g)(2)(ii)--CDP Seal P/N 2383M82P03
----------------------------------------------------------------------------------------------------------------
Life cycles - Life cycles - Life cycles -
Part name Part No. 2B67 2B67B 2B67/P
----------------------------------------------------------------------------------------------------------------
Seal, CDP............................ 2383M82P03 For part .............. .............. 15,000
serial numbers NOT
listed in GEnx-2B SB 72-
0423, latest revision.

[[Page 33075]]

Seal, CDP............................ 2383M82P03 For part .............. .............. 6,100
serial numbers listed in
Table 3 of GEnx-2B SB 72-
0423, latest revision.
Seal, CDP............................ 2383M82P03 For part .............. .............. 13,400
serial numbers listed in
Table 4 of GEnx-2B SB 72-
0423, latest revision.
Seal, CDP............................ 2383M82P03 For part .............. .............. 3,600
serial numbers listed in
Table 5 of GEnx-2B SB 72-
0423, latest revision.
----------------------------------------------------------------------------------------------------------------

(iii) For interstage seal P/N 2383M85P04, insert the information
in Table 7 to paragraph (g)(2)(iii) of this AD.

Table 7 to Paragraph (g)(2)(iii)--Interstage Seal P/N 2383M85P04
----------------------------------------------------------------------------------------------------------------
Life cycles - Life cycles - Life cycles -
Part name Part No. 2B67 2B67B 2B67/P
----------------------------------------------------------------------------------------------------------------
Seal, Interstage..................... 2383M85P04 For part .............. .............. 15,000
serial numbers NOT
listed in GEnx-2B SB 72-
0423, latest revision.
Seal, Interstage..................... 2383M85P04 For part .............. .............. 10,500
serial numbers listed in
Table 6 of GEnx-2B SB 72-
0423, latest revision.
Seal, Interstage..................... 2383M85P04 For part .............. .............. 15,000
serial numbers listed in
Table 7 of GEnx-2B SB 72-
0423, latest revision.
Seal, Interstage..................... 2383M85P04 For part .............. .............. 5,500
serial numbers listed in
Table 8 of GEnx-2B SB 72-
0423, latest revision.
----------------------------------------------------------------------------------------------------------------

(iv) For HPT rotor stage 2 disk P/N 2383M86P02, insert the
information in Table 8 to paragraph (g)(2)(iv) of this AD.

Table 8 to Paragraph (g)(2)(iv)--HPT Rotor Stage 2 Disk P/N 2383M86P02
----------------------------------------------------------------------------------------------------------------
Life cycles - Life cycles - Life cycles -
Part name Part No. 2B67 2B67B 2B67/P
----------------------------------------------------------------------------------------------------------------
Disk, Stage 2........................ 2383M86P02 For part .............. .............. 13,300
serial numbers NOT
listed in GEnx-2B SB 72-
0423, latest revision.
Disk, Stage 2........................ 2383M86P02 For part .............. .............. 6,900
serial numbers listed in
Table 9 of GEnx-2B SB 72-
0423, latest revision.
Disk, Stage 2........................ 2383M86P02 For part .............. .............. 10,400
serial numbers listed in
Table 10 of GEnx-2B SB
72-0423, latest revision.
Disk, Stage 2........................ 2383M86P02 For part .............. .............. 3,800
serial numbers listed in
Table 11 of GEnx-2B SB
72-0423, latest revision.
----------------------------------------------------------------------------------------------------------------

(3) After performing the actions required by paragraphs (g)(1)
and (2) of this AD, except as provided in paragraph (h) of this AD,
no alternative life limits may be approved for the affected parts.

(h) 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 (i)(1) of this AD and email to: <a href="/cdn-cgi/l/email-protection#14555a513955503955595b57547275753a737b62">[email&#160;protected]</a>.
(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.

(i) Related Information

(1) For more information about this AD, contact Alexei Marqueen,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7178; email:
<a href="/cdn-cgi/l/email-protection#edac8188958884c3b9c3a08c9f9c98888883ad8b8c8cc38a829b">[email&#160;protected]</a>.
(2) For service information identified in this AD, contact
General Electric Company, 1 Neumann Way, Cincinnati, OH 45215;
phone: (513) 552-3272; email: <a href="/cdn-cgi/l/email-protection#9afbecf3fbeef3f5f4b4fcf6ffffeee9efeaeaf5e8eedafbffb4fdffb4f9f5f7">[email&#160;protected]</a>;
website: <a href="https://www.ge.com">https://www.ge.com</a>. You may view this referenced service
information at the FAA, Airworthiness Products Section, Operational
Safety Branch, 1200 District Avenue, Burlington, MA 01803. For
information on the availability of this material at the FAA, call
(817) 222-5110.

Issued on May 12, 2022.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2022-11354 Filed 5-31-22; 8:45 am]
BILLING CODE 4910-13-P

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