Proposed Rule2021-23180
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
October 28, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to supersede Airworthiness Directive (AD) 2021-11-15, which applies to certain International Aero Engines AG (IAE) V2500 model turbofan engines. AD 2021-11-15 requires performance of an ultrasonic inspection (USI) of the high-pressure turbine (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. Since the FAA issued AD 2021-11-15, the FAA determined the need to clarify the compliance time for inspection of any HPT 1st-stage disk or HPT 2nd-stage disk that is installed on a low-thrust model engine but had been previously operated on a high-thrust model engine. This proposed AD would require 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. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 86 Issue 206 (Thursday, October 28, 2021)</title>
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[Federal Register Volume 86, Number 206 (Thursday, October 28, 2021)]
[Proposed Rules]
[Pages 59658-59662]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-23180]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0835; Project Identifier AD-2021-00971-E]
RIN 2120-AA64
Airworthiness Directives; International Aero Engines AG Turbofan
Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2021-11-15, which applies to certain International Aero Engines AG
(IAE) V2500 model turbofan engines. AD 2021-11-15 requires performance
of an ultrasonic inspection (USI) of the high-pressure turbine (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. Since the FAA issued AD 2021-11-15, the FAA determined the need
to clarify the compliance time for inspection of any HPT 1st-stage disk
or HPT 2nd-stage disk that is installed on a low-thrust model engine
but had been previously operated on a high-thrust model engine. This
proposed AD would require 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. 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 December
13, 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 NPRM, contact
International Aero Engines AG, 400 Main Street, East Hartford, CT
06118; phone: (800) 565-0140; email: <a href="/cdn-cgi/l/email-protection#650d0009155751251517041111120d0c110b001c4b060a08"><span class="__cf_email__" data-cfemail="573f323b276563172725362323203f3e2339322e7934383a">[email protected]</span></a>; website:
<a href="https://connect.prattwhitney.com">https://connect.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 (781) 238-7759.
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-2021-0835; 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: Alberto Hernandez, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7329; fax: (781) 238-7199; email:
<a href="/cdn-cgi/l/email-protection#c283aea0a7b0b6adec88ec8aa7b0aca3aca6a7b882a4a3a3eca5adb4"><span class="__cf_email__" data-cfemail="d697bab4b3a4a2b9f89cf89eb3a4b8b7b8b2b3ac96b0b7b7f8b1b9a0">[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-2021-0835; Project Identifier
AD-2021-00971-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
the 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 we receive about this proposed AD.
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
[[Page 59659]]
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 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.
Background
The FAA issued AD 2021-11-15, Amendment 39-21577 (86 FR 30380, June
8, 2021), (AD 2021-11-15), for all IAE V2522-A5, V2524-A5, V2525-D5,
V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2531-E5, and
V2533-A5 model turbofan engines with a certain HPT 1st-stage disk or
HPT 2nd-stage disk installed. AD 2021-11-15 was prompted by an event
involving an uncontained failure of an HPT 1st-stage disk that resulted
in high-energy debris penetrating the engine cowling. 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)) and AD 2021-01-03 on
January 6, 2021 (86 FR 458), to remove from service HPT 1st-stage and
HPT 2nd-stage disks identified as having the highest risk of failure.
Based on the root cause analysis performed since that event, the
manufacturer identified a population of HPT 1st-stage disks and HPT
2nd-stage disks that require inspection and possible removal from
service. AD 2021-11-15 requires the performance of an 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 agency issued AD 2021-11-15 to prevent failure of the HPT
1st-stage disk and HPT 2nd-stage disk.
Actions Since AD 2021-11-15 Was Issued
Since the FAA issued AD 2021-11-15, the FAA determined the need to
clarify the compliance time for inspection of any HPT 1st-stage disk or
HPT 2nd-stage disk that is installed on a V2500 low-thrust model engine
but that had been previously operated on a V2500 high-thrust model
engine. The manufacturer categorizes V2527E-A5, V2527M-A5, V2528-D5,
V2530-A5, and V2533-A5 model turbofan engines as high-thrust model
engines and V2522-A5, V2524-A5, V2525-D5, and V2527-A model turbofan
engines as low-thrust model engines. The FAA determined that any HPT
1st-stage disk and HPT 2nd-stage disk that was operated on a high-
thrust model engine must follow shortened compliance thresholds.
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 IAE Non-Modification Service Bulletin (NMSB) No.
V2500-ENG-72-0713, Revision 1, dated January 26, 2021. This NMSB
identifies the affected HPT 1st-stage disks and HPT 2nd-stage disks on
IAE V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5,
V2528-D5, V2530-A5, and V2533-A5 model turbofan engines and specifies
procedures for a USI of the HPT 1st-stage disk and HPT 2nd-stage disk.
The Director of the Federal Register approved IAE NMSB V2500-ENG-72-
0713, Revision 1, dated January 26, 2021 for incorporation by reference
as of July 13, 2021 (86 FR 30380, June 8, 2021).
The FAA also reviewed IAE NMSB No. V2500-E5-72-0015, Revision 1,
dated August 10, 2021. This NMSB identifies the affected HPT 1st-stage
disks and HPT 2nd-stage disks on IAE V2531-E5 model turbofan engines
and specifies procedures for a USI of the HPT 1st-stage disk and HPT
2nd-stage disk.
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.
Proposed AD Requirements in This NPRM
This proposed AD would retain certain requirements of AD 2021-11-
15. This proposed AD would require the performance of an 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.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 1,100 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
----------------------------------------------------------------------------------------------------------------
USI the HPT 1st-stage disk and HPT 2nd- 20 work-hours x $85 per $0 $1,700 $1,870,000
stage disk. hour = $1,700.
----------------------------------------------------------------------------------------------------------------
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:
[[Page 59660]]
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.
----------------------------------------------------------------------------------------------------------------
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 individuals.
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 that the 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:
0
a. Removing Airworthiness Directive AD 2021-11-15, Amendment 39-21577
(86 FR 30380, June 8, 2021); and
0
b. Adding the following new airworthiness directive:
International Aero Engines AG: Docket No. FAA-2021-0835; Project
Identifier AD-2021-00971-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) action by December 13, 2021.
(b) Affected ADs
This AD replaces AD 2021-11-15, Amendment 39-21577 (86 FR 30380,
June 8, 2021) (AD 2021-11-15).
(c) Applicability
This AD applies to International Aero Engines AG (IAE) V2522-A5,
V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-
A5, V2531-E5, and V2533-A5 model turbofan engines with an installed:
(1) High-pressure turbine (HPT) 1st-stage disk, part number (P/
N) 2A5001, with a serial number (S/N) listed in Appendix A, Table 1,
of IAE Non-Modification Service Bulletin (NMSB) No. V2500-ENG-72-
0713, Revision 1, dated January 26, 2021 (IAE NMSB V2500-ENG-72-
0713, Revision 1) or IAE NMSB No. V2500-E5-72-0015, Revision 1,
dated August 10, 2021 (IAE NMSB V2500-E5-72-0015, Revision 1); or
(2) HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in
Appendix A, Table 2, of IAE NMSB V2500-ENG-72-0713, Revision 1, or
IAE NMSB V2500-E5-72-0015, Revision 1.
(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine
Section.
(e) Unsafe Condition
This AD was prompted by an analysis performed by the
manufacturer after an event involving an uncontained failure of a
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,
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 IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-
A5 model turbofan engines with an HPT 1st-stage disk, P/N 2A5001,
with an S/N listed in Appendix A, Table 1, of IAE NMSB V2500-ENG-72-
0713, Revision 1, within the compliance time specified in Figure 1
to paragraph (g)(1) of this AD, or within 10 flight cycles (FCs)
after the effective date of this AD, whichever occurs later, perform
an ultrasonic inspection (USI) of the HPT 1st-stage disk using the
Accomplishment Instructions, paragraph 6, of IAE NMSB V2500-ENG-72-
0713, Revision 1.
[[Page 59661]]
[GRAPHIC] [TIFF OMITTED] TP28OC21.000
Note 1 to paragraph (g)(1): The USI required by paragraphs
(g)(1) through (6) of this AD requires the HPT 1st-stage disk and
HPT 2nd-stage disks to be removed from the engine allowing piece-
part opportunity inspections. Per the Airworthiness Limitations
Section of the manufacturer's Instructions for Continued
Airworthiness, the additional inspections are not required unless
the part has more than 100 FCs since the last piece-part opportunity
inspection, is damaged, or is the cause for the removal of the
engine. Engine removal for the purposes of complying with this AD is
not ``cause'' for removal as stated in the Airworthiness Limitations
Section.
(2) For IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-
A5 model turbofan engines with an HPT 2nd-stage disk, P/N 2A4802,
with an S/N listed in Appendix A, Table 2, of IAE NMSB V2500-ENG-72-
0713, Revision 1, within the compliance time specified in Figure 1
to paragraph (g)(1) of this AD, or within 10 FCs after the effective
date of this AD, whichever occurs later, perform a USI of the HPT
2nd-stage disk using the Accomplishment Instructions, paragraph 7,
of IAE NMSB V2500-ENG-72-0713, Revision 1.
(3) For IAE V2522-A5, V2524-A5, V2525-D5, and V2527-A5 model
turbofan engines with an HPT 1st-stage disk, P/N 2A5001, with an S/N
listed in Appendix A, Table 1, of IAE NMSB V2500-ENG-72-0713,
Revision 1, within the following compliance times, perform a USI of
the HPT 1st-stage disk using the Accomplishment Instructions,
paragraph 6, of IAE NMSB V2500-ENG-72-0713, Revision 1:
(i) If the affected HPT 1st-stage disk has not operated at any
time in an IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, or V2533-A5
model turbofan engine, perform the inspection within the compliance
time specified in Figure 2 to paragraph (g)(3)(i) of this AD, or
within 10 FCs after the effective date of this AD, whichever occurs
later; or
[GRAPHIC] [TIFF OMITTED] TP28OC21.001
(ii) If the affected HPT 1st-stage disk has operated at any time
in an IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, or V2533-A5
model turbofan engine, perform the inspection within the compliance
time specified in Figure 1 to paragraph (g)(1) of this AD, or within
10 FCs after the effective date of this AD, whichever occurs later.
(4) For IAE V2522-A5, V2524-A5, V2525-D5, and V2527-A5 model
turbofan engines with an HPT 2nd-stage disk, P/N 2A4802, with an S/N
listed in Appendix A, Table 2, of IAE NMSB V2500-ENG-72-0713,
Revision 1, within the following compliance times, perform a USI of
the HPT 2nd-stage disk using the Accomplishment Instructions,
paragraph 7, of IAE NMSB V2500-ENG-72-0713, Revision 1:
(i) If the affected HPT 2nd-stage disk has not operated at any
time in an IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, or V2533-A5
model turbofan engine, perform the inspection within the compliance
time specified in Figure 2 to paragraph (g)(3)(i) of this AD, or
within 10 FCs after the effective date of this AD, whichever occurs
later; or
(ii) If the affected HPT 2nd-stage disk has operated at any time
in an IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, or V2533-A5
model turbofan engine, perform the inspection within the compliance
time specified in Figure 1 to paragraph (g)(1) of this AD, or within
10 FCs after the effective date of this AD, whichever occurs later.
(5) For IAE V2531-E5 model turbofan engines with an HPT 1st-
stage disk, P/N 2A5001, with an S/N listed in Appendix A, Table 1,
of IAE NMSB V2500-E5-72-0015, Revision 1, within the compliance time
specified in Figure 1 to paragraph (g)(1) of this AD, or within 10
FCs after the effective date of this AD, whichever occurs later,
perform a USI of the HPT 1st-stage disk using the Accomplishment
Instructions, paragraph 6, of IAE NMSB V2500-E5-72-0015, Revision 1.
(6) For IAE V2531-E5 model turbofan engines with an HPT 2nd-
stage disk, P/N 2A4802, with an S/N listed in Appendix A, Table 2,
of IAE NMSB V2500-E5-72-0015, Revision 1, within the compliance time
specified in Figure 1 to paragraph (g)(1) of this AD, or within 10
FCs after the effective date of this AD, whichever occurs later,
perform a USI of the HPT 2nd-stage disk using the Accomplishment
Instructions, paragraph 7, of IAE NMSB V2500-E5-72-0015, Revision 1.
(7) If, during the USI required by paragraphs (g)(1) through (6)
of this AD, an HPT 1st-stage disk or HPT 2nd-stage disk does not
pass the inspection as specified in the Accomplishment Instructions,
paragraph 8, of IAE NMSB V2500-ENG-72-0713, Revision 1, or IAE NMSB
V2500-E5-72-0015, Revision 1, as applicable, 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) Definitions
(1) For the purpose of this AD, an ``engine shop visit'' is the
induction of an engine into the shop for maintenance involving the
separation of pairs of major mating engine flanges, H-P, except for
the following situations, which do not constitute an engine shop
visit.
(i) Separation of engine flanges solely for the purposes of
transportation without subsequent engine maintenance.
(ii) Engine removal for the purpose of performing field
maintenance activities at a maintenance facility in lieu of
performing them on-wing.
(2) For the purpose for this AD, a ``part eligible for
installation'' is:
[[Page 59662]]
(i) 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, Revision
1, or Appendix A, Tables 1 and 2, of IAE NMSB V2500-E5-72-0015,
Revision 1, that passed the USI required by paragraphs (g)(1)
through (6) of this AD; or
(ii) 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,
Revision 1, or Appendix A, Tables 1 and 2, of IAE NMSB V2500-E5-72-
0015, Revision 1.
(i) Credit for Previous Actions
You may take credit for the USI of the HPT 1st-stage disk and
HPT 2nd-stage disk required by paragraphs (g)(5) and (6) of this AD
and the replacement of the HPT 1st-stage disk and HPT 2nd-stage disk
required by paragraph (g)(7) of this AD, if you performed these
actions before the effective date of this AD in accordance with IAE
NMSB No. V2500-E5-72-0015, original issue, dated December 15, 2020.
(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)(1) of this AD. You may email your
request to: <a href="/cdn-cgi/l/email-protection#6d2c2328402c29402c20222e2d0b0c0c430a021b"><span class="__cf_email__" data-cfemail="2c6d6269016d68016d61636f6c4a4d4d024b435a">[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.
(k) Related Information
(1) 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-
7199; email: <a href="/cdn-cgi/l/email-protection#c485a8a6a1b6b0abea8eea8ca1b6aaa5aaa0a1be84a2a5a5eaa3abb2"><span class="__cf_email__" data-cfemail="b8f9d4daddcaccd796f296f0ddcad6d9d6dcddc2f8ded9d996dfd7ce">[email protected]</span></a>.
(2) For service information identified in this AD, contact
International Aero Engines AG, 400 Main Street, East Hartford, CT
06118; phone: (800) 565-0140; email: <a href="/cdn-cgi/l/email-protection#a3cbc6cfd39197e3d3d1c2d7d7d4cbcad7cdc6da8dc0ccce"><span class="__cf_email__" data-cfemail="127a777e622026526260736666657a7b667c776b3c717d7f">[email protected]</span></a>;
website: <a href="https://connect.prattwhitney.com">https://connect.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 (781) 238-7759.
Issued on September 23, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-23180 Filed 10-27-21; 8:45 am]
BILLING CODE 4910-13-P
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