Proposed Rule2022-06211
Airworthiness Directives; International Aero Engines, LLC Turbofan Engines
Primary source
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Published
March 24, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain International Aero Engines, LLC (IAE LLC) PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G- JM, PW1130G-JM, PW1133GA-JM, and PW1133G-JM model turbofan engines. This proposed AD was prompted by an analysis of an event involving an International Aero Engines AG (IAE AG) V2533-A5 model turbofan engine, which experienced an uncontained failure of a high-pressure turbine (HPT) 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. This proposed AD would require performance of an ultrasonic inspection (USI) of the HPT 1st-stage disk and HPT 2nd-stage disk and, depending on the results of the inspections, replacement of the HPT 1st-stage disk or HPT 2nd-stage disk. 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 57 (Thursday, March 24, 2022)</title>
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[Federal Register Volume 87, Number 57 (Thursday, March 24, 2022)]
[Proposed Rules]
[Pages 16659-16661]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-06211]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0292; Project Identifier AD-2021-01297-E]
RIN 2120-AA64
Airworthiness Directives; International Aero Engines, LLC
Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain International Aero Engines, LLC (IAE LLC) PW1122G-JM,
PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-
JM, PW1130G-JM, PW1133GA-JM, and PW1133G-JM model turbofan engines.
This proposed AD was prompted by an analysis of an event involving an
International Aero Engines AG (IAE AG) V2533-A5 model turbofan engine,
which experienced an uncontained failure of a high-pressure turbine
(HPT) 1st-stage disk that resulted in high-energy debris penetrating
the engine cowling. This proposed AD would require performance of an
ultrasonic inspection (USI) of the HPT 1st-stage disk and HPT 2nd-stage
disk and, depending on the results of the inspections, replacement of
the HPT 1st-stage disk or HPT 2nd-stage disk. 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 May 9,
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
International Aero Engines, LLC, 400 Main Street, East Hartford, CT
06118; phone: (860) 690-9667; email: <a href="/cdn-cgi/l/email-protection#bfd7dad3cf8d8bffcfc891cacbdc91dcd0d2"><span class="__cf_email__" data-cfemail="9cf4f9f0ecaea8dcecebb2e9e8ffb2fff3f1">[email protected]</span></a>; website: <a href="http://fleetcare.prattwhitney.com">http://fleetcare.prattwhitney.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-2022-0292; 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: Mark Taylor, Aviation Safety Engineer,
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone:
(781) 238-7229; email: <a href="/cdn-cgi/l/email-protection#662b07140d4832071f0a09142600070748010910"><span class="__cf_email__" data-cfemail="440925362f6a10253d282b36042225256a232b32">[email protected]</span></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-2022-0292; Project Identifier
AD-2021-01297-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
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 Mark
Taylor, 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
On March 18, 2020, an Airbus Model A321-231 airplane, powered by
IAE AG V2533-A5 model turbofan engines, experienced an uncontained HPT
1st-stage disk failure that resulted in high-energy debris penetrating
the engine cowling. Based on a preliminary analysis of this event, on
March 21, 2020, the FAA issued Emergency AD 2020-07-51 (followed by
publication in the Federal Register on April 13, 2020, as a Final Rule,
Request for Comments (85 FR 20402)), which requires the removal from
service of certain HPT 1st-stage disks installed on IAE AG V2522-A5,
V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5,
and V2533-A5 model turbofan engines.
Based on the root cause analysis performed since that March 2020
event, Pratt & Whitney (PW) identified a different population of HPT
1st-stage disks and HPT 2nd-stage disks that are subject to the same
unsafe condition identified in AD 2020-07-51. In response, the FAA
issued AD 2021-19-10 on September 10, 2021 (86 FR 50610), which
requires the removal from service of certain HPT 1st-stage disks and
HPT 2nd-stage disks installed on IAE LLC PW1122G-JM, PW1124G1-JM,
PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-
JM, PW1133GA-JM, and PW1133G-JM model turbofan engines.
Since the FAA issued AD 2021-19-10, PW identified another
subpopulation of HPT 1st-stage disks and HPT 2nd-stage disks that
require inspection and possible removal from service. Included in this
additional subpopulation of HPT 1st-stage disks
[[Page 16660]]
and HPT 2nd-stage disks are those installed on the model turbofan
engines affected by this proposed AD. This proposed AD would require
performance of a USI on the remaining high-risk subpopulation of HPT
1st-stage disks and HPT 2nd-stage disks and, depending on the results
of the inspections, replacement of the HPT 1st-stage disk or HPT 2nd-
stage disk. This condition, if not addressed, could result in
uncontained HPT disk failure, release of high-energy debris, damage to
the engine, damage to the airplane, and loss of 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 Under 1 CFR Part 51
The FAA reviewed PW Service Bulletin (SB) PW1000G-C-72-00-0188-00A-
930A-D, Issue No: 001, dated September 13, 2021 (PW SB PW1000G-C-72-00-
0188-00A-930A-D). This SB specifies procedures for performing a USI of
the HPT 1st-stage disk and the HPT 2nd-stage disk, identified by part
number and serial number, installed on IAE LLC PW1124G1-JM, PW1127G-JM,
PW1127GA-JM, PW1129G-JM, PW1130G-JM, PW1133G-JM, and PW1133GA-JM model
turbofan engines. 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 ADDRESSES.
Other Related Service Information
The FAA reviewed PW SB PW1000G-C-72-00-0112-00A-930A-D, Issue No:
005, dated July 22, 2021. This SB describes procedures for replacing
the HPT 1st-stage disk, HPT 2nd-stage disk, and rotating hardware. This
SB also increases the life limit of the HPT hardware by introducing a
new configuration of rotating hardware.
Proposed AD Requirements in This NPRM
This proposed AD would require the performance of a USI of the HPT
1st-stage disk and HPT 2nd-stage disk and, depending on the results of
the inspections, replacement of the HPT 1st-stage disk or HPT 2nd-stage
disk.
Differences Between This Proposed AD and the Service Information
PW SB PW1000G-C-72-00-0188-00A-930A-D, Applicability, identifies
IAE LLC PW1127G-JM, PW1127GA-JM, PW1130G-JM, PW1124G1-JM, PW1129G-JM,
PW1133G-JM, and PW1133GA-JM model turbofan engines. The FAA determined
that IAE LLC PW1122G-JM, PW1124G-JM, and PW1127G1-JM model turbofan
engines are of the same type design and are subject to the same unsafe
condition. Therefore, the FAA included IAE LLC PW1122G-JM, PW1124G-JM,
and PW1127G1-JM model turbofan engines in the applicability of this
proposed AD.
PW SB PW1000G-C-72-00-0188-00A-930A-D uses the term ``hub'' to
describe the HPT 1st-stage disk and HPT 2nd-stage disk, while this
proposed AD uses the term ``disk.''
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 189 engines installed on airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed
AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Parts Cost per Cost on U.S.
Action Labor cost cost product operators
----------------------------------------------------------------------------------------------------------------
USI the HPT 1st-stage disk and HPT 2nd- 204 work-hours x $85 per $0 $17,340 $3,277,260
stage disk (also includes estimated hour = $17,340.
costs for disassembly of the engine and
removal of the HPT 1st-stage disk and
HPT 2nd-stage disk).
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary
replacement that would be required based on the results of the proposed
inspection. The agency has no way of determining the number of aircraft
that might need this replacement:
On-Condition Costs
------------------------------------------------------------------------
Parts Cost per
Action Labor cost cost product
------------------------------------------------------------------------
Replace the HPT 1st-stage 1 work-hour x $171,430 $171,515
disk or HPT 2nd-stage disk. $85 per hour =
$85.
------------------------------------------------------------------------
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some of the costs of this
proposed AD may be covered under warranty, thereby reducing the cost
impact on affected operators.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.
Regulatory Findings
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.
[[Page 16661]]
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.
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:
International Aero Engines, LLC: Docket No. FAA-2022-0292; Project
Identifier AD-2021-01297-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by May 9, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to International Aero Engines, LLC PW1122G-JM,
PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM,
PW1129G-JM, PW1130G-JM, PW1133GA-JM, and PW1133G-JM model turbofan
engines with engine serial numbers P770101 through P772647.
(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine
Section.
(e) Unsafe Condition
This AD was prompted by an analysis of an event involving an
International Aero Engines AG V2533-A5 model turbofan engine, which
experienced an uncontained failure of a high-pressure turbine (HPT)
1st-stage disk that resulted in high-energy debris penetrating the
engine cowling. The FAA is issuing this AD to prevent failure of the
HPT 1st-stage disk and HPT 2nd-stage disk. The unsafe condition, if
not addressed, could result in uncontained HPT disk failure, release
of high-energy debris, damage to the engine, damage to the airplane,
and loss of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) For affected engines that have not incorporated Pratt &
Whitney (PW) Service Bulletin (SB) PW1000G-C-72-00-0112-00A-930A-D,
Issue No: 005, dated July 22, 2021 (PW SB PW1000G-C-72-00-0112-00A-
930A-D), at the next engine shop visit after the effective date of
this AD, perform the following:
(i) Ultrasonic inspection (USI) of the HPT 1st-stage disk using
the Accomplishment Instructions, paragraph 9.A. or B., as
applicable, of PW SB PW1000G-C-72-00-0188-00A-930A-D, Issue No: 001,
dated September 13, 2021 (PW SB PW1000G-C-72-00-0188-00A-930A-D);
and
(ii) USI of the HPT 2nd-stage disk using the Accomplishment
Instructions, paragraph 9.C. or D., as applicable, of PW SB PW1000G-
C-72-00-0188-00A-930A-D.
(2) For affected engines that have incorporated PW SB PW1000G-C-
72-00-0112-00A-930A-D, with an installed HPT 1st-stage disk having a
serial number (S/N) identified in the Accomplishment Instructions,
Table 2., of PW SB PW1000G-C-72-00-0188-00A-930A-D, at the next
engine shop visit after the effective date of this AD, perform a USI
of the HPT 1st-stage disk using the Accomplishment Instructions,
paragraph 9.A. or B., as applicable, of PW SB PW1000G-C-72-00-0188-
00A-930A-D.
(3) For affected engines that have incorporated PW SB PW1000G-C-
72-00-0112-00A-930A-D, with an installed HPT 2nd-stage disk having
an S/N identified in the Accomplishment Instructions, Table 3., of
PW SB PW1000G-C-72-00-0188-00A-930A-D, at the next engine shop visit
after the effective date of this AD, perform a USI of the HPT 2nd-
stage disk using the Accomplishment Instructions, paragraph 9.C. or
D., of PW SB PW1000G-C-72-00-0188-00A-930A-D.
(4) Based on the results of the USIs required by paragraphs
(g)(1) through (3) of this AD, if any HPT 1st-stage disk or HPT 2nd-
stage disk does not pass the USI, as specified in the Accomplishment
Instructions, paragraphs 9.A. through D., of PW SB PW1000G-C-72-00-
0188-00A-930A-D, as applicable, before further flight, remove the
HPT 1st-stage disk or HPT 2nd-stage disk from service and replace
with a part eligible for installation.
Note 1 to paragraph (g): For affected engines that have
incorporated PW SB PW1000G-C-72-00-0112-00A-930A-D and do not
require an inspection per paragraph (g)(2) or (3) of this AD, no
further action is required.
(h) Definitions
(1) For the purpose of this AD, a ``part eligible for
installation'' is:
(i) Any HPT 1st-stage disk that passed the USI required by
paragraphs (g)(1)(i) and (g)(2) of this AD.
(ii) Any HPT 2nd-stage disk that passed the USI required by
paragraphs (g)(1)(ii) and (g)(3) of this AD.
(2) For the purpose for this AD, an ``engine shop visit'' is the
induction of an engine into the shop for maintenance involving the
separation of the ``M'' flange. Separation of the ``M'' flange
solely for the purposes of transportation without subsequent engine
maintenance does not constitute an engine shop visit.
(i) 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 (j)(1) of this AD and email to: <a href="/cdn-cgi/l/email-protection#21606f640c60650c606c6e62614740400f464e57"><span class="__cf_email__" data-cfemail="d6979893fb9792fb979b999596b0b7b7f8b1b9a0">[email protected]</span></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.
(j) Related Information
(1) For more information about this AD, contact Mark Taylor,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7229; email:
<a href="/cdn-cgi/l/email-protection#9cd1fdeef7b2c8fde5f0f3eedcfafdfdb2fbf3ea"><span class="__cf_email__" data-cfemail="7835190a13562c190114170a381e1919561f170e">[email protected]</span></a>.
(2) For service information identified in this AD, contact
International Aero Engines, LLC, 400 Main Street, East Hartford, CT
06118; phone: (860) 690-9667; email: <a href="/cdn-cgi/l/email-protection#056d60697537314575722b7071662b666a68"><span class="__cf_email__" data-cfemail="e088858c90d2d4a09097ce959483ce838f8d">[email protected]</span></a>; website:
<a href="http://fleetcare.prattwhitney.com">http://fleetcare.prattwhitney.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 March 18, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-06211 Filed 3-23-22; 8:45 am]
BILLING CODE 4910-13-P
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