Rule2021-14268
Airworthiness Directives; International Aero Engines AG Turbofan Engines
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
July 2, 2021
Effective
July 19, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2527- A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 model turbofan engines. This AD was prompted by a review of investigative findings from an event involving an uncontained failure of a high-pressure turbine (HPT) 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. This AD requires an ultrasonic inspection (USI) of affected HPT 1st-stage disks and HPT 2nd-stage disks and, depending on the results of the USI, removal of the affected HPT 1st-stage and HPT 2nd-stage disks from service. The FAA previously sent an emergency AD to all known U.S. owners and operators of these engines and is now issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 86 Issue 125 (Friday, July 2, 2021)</title>
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[Federal Register Volume 86, Number 125 (Friday, July 2, 2021)]
[Rules and Regulations]
[Pages 35217-35221]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-14268]
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Rules and Regulations
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains regulatory documents
having general applicability and legal effect, most of which are keyed
to and codified in the Code of Federal Regulations, which is published
under 50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by the Superintendent of Documents.
========================================================================
Federal Register / Vol. 86, No. 125 / Friday, July 2, 2021 / Rules
and Regulations
[[Page 35217]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0509; Project Identifier AD-2021-00608-E;
Amendment 39-21626; AD 2021-11-51]
RIN 2120-AA64
Airworthiness Directives; International Aero Engines AG Turbofan
Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2527-
A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 model turbofan
engines. This AD was prompted by a review of investigative findings
from an event involving an uncontained failure of a high-pressure
turbine (HPT) 1st-stage disk that resulted in high-energy debris
penetrating the engine cowling. This AD requires an ultrasonic
inspection (USI) of affected HPT 1st-stage disks and HPT 2nd-stage
disks and, depending on the results of the USI, removal of the affected
HPT 1st-stage and HPT 2nd-stage disks from service. The FAA previously
sent an emergency AD to all known U.S. owners and operators of these
engines and is now issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective July 19, 2021. Emergency AD 2021-11-51,
issued on May 21, 2021, which contained the requirements of this
amendment, was effective with actual notice.
The Director of the Federal Register approved the incorporation by
reference of certain publications identified in this AD as of July 13,
2021 (86 FR 30380, June 8, 2021).
The FAA must receive comments on this AD by August 16, 2021.
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 final rule, contact:
International Aero Engines AG, 400 Main Street, East Hartford, CT
06118; phone: (860) 565-2391; email: <a href="/cdn-cgi/l/email-protection#8ce4e9e0fcbeb8ccfcfba2f9f8efa2efe3e1"><span class="__cf_email__" data-cfemail="98f0fdf4e8aaacd8e8efb6edecfbb6fbf7f5">[email protected]</span></a>; website: <a href="http://fleetcare.pw.utc.com">http://fleetcare.pw.utc.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 (781) 238-7759. It is
also available at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and
locating Docket No. FAA-2021-0509.
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-2021-0509; 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 street address for Docket
Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Alberto Hernandez, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7329; fax: (781) 238-7999; email:
<a href="/cdn-cgi/l/email-protection#743518161106001b5a3e5a3c11061a151a10110e341215155a131b02"><span class="__cf_email__" data-cfemail="6c2d000e091e180342264224091e020d020809162c0a0d0d420b031a">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
On May 21, 2021, the FAA issued Emergency AD 2021-11-51 (the
emergency AD), which requires a USI of affected HPT 1st-stage disks and
HPT 2nd-stage disks installed on IAE V2522-A5, V2524-A5, V2527-A5,
V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 model turbofan engines
and, depending on the results of the USI, removal of the affected HPT
disks from service. The FAA sent the emergency AD to all known U.S.
owners and operators of these engines. That action was prompted by a
review of investigative findings from an event involving an uncontained
failure of an HPT 1st-stage disk that resulted in high-energy debris
penetrating the engine cowling. This condition, if not addressed, could
result in uncontained HPT 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 AD because the agency evaluated all the
relevant information and determined the unsafe condition described
previously is likely to exist or develop in other products of the same
type design.
Related Service Information Under 1 CFR Part 51
The FAA reviewed IAE Non-Modification Service Bulletin (NMSB)
V2500-ENG-72-0713, Revision 1, dated January 26, 2021 (IAE NMSB V2500-
ENG-72-0713). IAE NMSB V2500-ENG-72-0713 specifies procedures for
performing an ultrasonic inspection of the HPT 1st-stage disk and the
HPT 2nd-stage disk installed on IAE V2500-A5 and V2500-D5 series
engines.
The FAA also reviewed IAE NMSB V2500-E5-72-0015, dated December 15,
2020 (IAE NMSB V2500-E5-72-0015). IAE NMSB V2500-E5-72-0015 specifies
procedures for performing an ultrasonic inspection of the HPT 1st-stage
disk and the HPT 2nd-stage disk installed on V2500-E5 series engines.
The Director of the Federal Register approved IAE NMSB V2500-ENG-
72-0713 and IAE NMSB V2500-E5-72-0015 for incorporation by reference as
of July 13, 2021 (86 FR 30380, June 8, 2021). 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.
AD Requirements
This AD requires a USI of affected HPT 1st-stage disks and HPT 2nd-
stage disks installed on IAE V2522-A5,
[[Page 35218]]
V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 model
turbofan engines and, depending on the results of the USI, removal of
the affected HPT disks from service.
Interim Action
The FAA considers this AD interim action. The root cause of this
event is still under investigation.
Justification for Immediate Adoption and Determination of the Effective
Date
Section 553(b)(3)(B) of the Administrative Procedure Act (APA) (5
U.S.C. 551 et seq.) authorizes agencies to dispense with notice and
comment procedures for rules when the agency, for ``good cause,'' finds
that those procedures are ``impracticable, unnecessary, or contrary to
the public interest.'' Under this section, an agency, upon finding good
cause, may issue a final rule without providing notice and seeking
comment prior to issuance. Further, section 553(d) of the APA
authorizes agencies to make rules effective in less than thirty days,
upon a finding of good cause.
An unsafe condition exists that required the immediate adoption of
Emergency AD 2021-11-51, issued on May 21, 2021, to all known U.S.
owners and operators of these engines. The FAA has found that the risk
to the flying public justified forgoing notice and comment prior to
adoption of this rule.
On March 18, 2020, an Airbus Model A321-231 airplane, powered by
IAE V2533-A5 model turbofan engines, experienced an uncontained HPT
1st-stage disk failure that resulted in an aborted takeoff. The
uncontained failure of the HPT 1st-stage disk resulted in high-energy
debris penetrating the engine cowling. The FAA published Emergency AD
2020-07-51 on March 21, 2020 (followed by publication in the Federal
Register on April 13, 2020, as a Final Rule, Request for Comments (85
FR 20402)), to remove from service HPT 1st-stage disks identified as
having the highest risk of failure. Based on a review of investigative
findings performed since that event, the manufacturer has identified a
different population of affected HPT 1st-stage and HPT 2nd-stage disks
that are affected by the same unsafe condition and require USI and,
depending on the results of the USI, removal from service.
The FAA considers removal of high-risk HPT 1st-stage and 2nd-stage
disks to be an urgent safety issue. The USI of the affected HPT disks
must be accomplished within 10 flight cycles after the effective date
of this AD to identify HPT 1st-stage and 2nd-stage disks at risk of
failure and to maintain an acceptable level of safety. This unsafe
condition may result in loss of the airplane. These conditions still
exist, and therefore, notice and opportunity for prior public comment
are impracticable and contrary to public interest pursuant to 5 U.S.C.
553(b)(3)(B).
In addition, for the reasons stated above, the FAA finds that good
cause exists pursuant to 5 U.S.C. 553(d) for making this amendment
effective in less than 30 days, for the same reasons the FAA finds good
cause to forego notice and comment.
Comments Invited
The FAA invites you to send any written data, views, or arguments
about this final rule. Send your comments to an address listed under
ADDRESSES. Include the Docket No. FAA-2021-0509 and Project Identifier
AD-2021-00608-E at the beginning of your comments. The most helpful
comments reference a specific portion of the final rule, 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 final rule 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 final rule.
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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to Alberto
Hernandez, 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.
Regulatory Flexibility Act
The requirements of the Regulatory Flexibility Act (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 FAA has determined
that it has good cause to adopt this rule without prior notice and
comment, RFA analysis is not required.
Costs of Compliance
The FAA estimates that this AD affects 2 engines installed on
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Ultrasonic inspection (includes 204 work-hours x $85 per $0 $17,340 $34,680
actions necessary to disassemble the hour = $17,340.
engine).
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary
replacements that would be required based on the results of the
inspection. The agency has no way of determining the number of aircraft
that might need these replacements:
[[Page 35219]]
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product
----------------------------------------------------------------------------------------------------------------
Replace the HPT 1st-stage disk or HPT 2nd- 0 work-hours x $85 per hour = $0 $300,000 $300,000
stage disk.
----------------------------------------------------------------------------------------------------------------
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, 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.
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:
2021-11-51 International Aero Engines AG: Amendment 39-21626; Docket
No. FAA-2021-0509; Project Identifier AD-2021-00608-E.
(a) Effective Date
This airworthiness directive (AD) is effective without actual
notice on July 19, 2021. Emergency AD 2021-11-51, issued on May 21,
2021, which contained the requirements of this amendment, was
effective with actual notice.
(b) Affected ADs
None.
(c) Applicability
This AD applies to International Aero Engines AG (IAE) V2522-A5,
V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5
model turbofan engines with:
(1) A high-pressure turbine (HPT) 1st-stage disk, part number
(P/N) 2A5001, with serial number (S/N), PKLBR34908, PKLBR59989,
PKLBR83471, PKLBSC9996, PKLBSG0105, PKLBSG9043 or PKLBSH1829,
installed; or
(2) An HPT 2nd-stage disk, P/N 2A4802, with S/N PKLBR87800,
PKLBR88708 PKLBR89452, PKLBSA9907, PKLBSH9246, PKLBSC8066,
PKLBSC8077, or PKLBSG2213, installed.
(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine
Section.
(e) Unsafe Condition
This AD was prompted by a review of investigative findings from
an event involving an uncontained failure of an 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. The unsafe
condition, if not addressed, could result in uncontained HPT
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 with an installed HPT 1st-stage disk
listed in Table 1 to paragraph (g)(1) of this AD, within 10 flight
cycles after the effective date of this AD, perform an ultrasonic
inspection (USI) of the HPT 1st-stage disk using the Accomplishment
Instructions, paragraph 6, of IAE Non-Modification Service Bulletin
(NMSB) V2500-ENG-72-0713, Revision 1, dated January 26, 2021 (IAE
NMSB V2500-ENG-72-0713).
[[Page 35220]]
[GRAPHIC] [TIFF OMITTED] TR02JY21.000
(2) For affected engines with an installed HPT 2nd-stage disk
listed in Table 2 to paragraph (g)(2) of this AD, within 10 flight
cycles after the effective date of this AD, perform a USI of the HPT
2nd-stage disk using the Accomplishment Instructions, paragraph 7,
of IAE NMSB V2500-ENG-72-0713.
[GRAPHIC] [TIFF OMITTED] TR02JY21.001
(3) If, during the USI required by paragraphs (g)(1) and (2) of
this AD, an HPT 1st-stage disk or HPT 2nd-stage disk does not pass
the USI as specified in the Accomplishment Instructions, paragraph
8., of IAE NMSB V2500-ENG-72-0713, Revision 1, before further
flight, remove the HPT 1st-stage disk or 2nd-stage disk, as
applicable, from service and replace with a part eligible for
installation.
(h) Definition
For the purpose for this AD, a ``part eligible for
installation'' is:
(1) An HPT 1st-stage disk or HPT 2nd-stage disk listed in
Appendix A, Tables 1 and 2, of IAE NMSB V2500-ENG-72-0713, or
Appendix A, Tables 1 and 2, of IAE NMSB V2500-E5-72-0015, dated
December 15, 2020 (IAE NMSB V2500-E5-72-0015) that has passed the
USI as specified in the Accomplishment Instructions, paragraph 8.,
of IAE NMSB V2500-ENG-72-0713 or NMSB V2500-E5-72-0015, or
(2) An HPT 1st-stage disk or HPT 2nd-stage disk that is not
listed in Appendix A, Tables 1 and 2, of IAE NMSB V2500-ENG-72-0713
or Appendix A, Tables 1 and 2, of IAE NMSB V2500-E5-72-0015.
(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 Related Information. You may email your request to
<a href="/cdn-cgi/l/email-protection#75343b305834315834383a36351314145b121a03"><span class="__cf_email__" data-cfemail="03424d462e42472e424e4c40436562622d646c75">[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
For more information about this AD, contact Alberto Hernandez,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7329; fax: (781) 238-7999;
email: <a href="/cdn-cgi/l/email-protection#2c6d404e495e584302660264495e424d424849566c4a4d4d024b435a"><span class="__cf_email__" data-cfemail="20614c424552544f0e6a0e6845524e414e44455a604641410e474f56">[email protected]</span></a>.
(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 the AD specifies otherwise.
(3) The following service information was approved for IBR on
July 13, 2021 (86 FR 30380, June 8, 2021).
(i) IAE Non-Modification Service Bulletin (NMSB) V2500-ENG-72-
0713, Revision 1, dated January 26, 2021.
(ii) IAE NMSB V2500-E5-72-0015, dated December 15, 2020.
(4) For International Aero Engines service information
identified in this AD, contact International Aero Engines AG, 400
Main Street, East Hartford, CT 06118; phone: (860) 565-2391; email:
<a href="/cdn-cgi/l/email-protection#8ee6ebe2febcbacefef9a0fbfaeda0ede1e3"><span class="__cf_email__" data-cfemail="0d6568617d3f394d7d7a2378796e236e6260">[email protected]</span></a>; website: <a href="http://fleetcare.pw.utc.com">http://fleetcare.pw.utc.com</a>.
(5) You may view this service information at FAA, Airworthiness
Products Section,
[[Page 35221]]
Operational Safety Branch, 1200 District Avenue, Burlington, MA
01803. For information on the availability of this material at the
FAA, call (781) 238-7759.
(6) 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: <a href="/cdn-cgi/l/email-protection#3f595a5b4d5a5811535a585e537f515e4d5e11585049"><span class="__cf_email__" data-cfemail="90f6f5f4e2f5f7befcf5f7f1fcd0fef1e2f1bef7ffe6">[email protected]</span></a>, or go to: <a href="https://www.archives.gov/federal-register/cfr/ibr-locations.html">https://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on June 18, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-14268 Filed 6-30-21; 11:15 am]
BILLING CODE 4910-13-P
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