Rule2021-15486
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 21, 2021
Effective
August 5, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain International Aero Engines AG (IAE) V2500 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 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 with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 86 Issue 137 (Wednesday, July 21, 2021)</title>
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[Federal Register Volume 86, Number 137 (Wednesday, July 21, 2021)]
[Rules and Regulations]
[Pages 38410-38413]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-15486]
[[Page 38410]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0544; Project Identifier AD-2021-00642-E;
Amendment 39-21646; AD 2021-14-19]
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) V2500 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 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 with a part eligible for
installation. The FAA is issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective August 5, 2021.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of August 5,
2021.
The Director of the Federal Register approved the incorporation by
reference of certain other publications listed in this AD as of July
13, 2021 (86 FR 30380, June 8, 2021).
The FAA must receive comments on this AD by September 7, 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: (800) 565-0140; email: <a href="/cdn-cgi/l/email-protection#4129242d3173750131366f3435226f222e2c"><span class="__cf_email__" data-cfemail="147c71786426205464633a6160773a777b79">[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-2021-0544.
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-2021-0544; 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 the
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#beffd2dcdbcccad190f490f6dbccd0dfd0dadbc4fed8dfdf90d9d1c8"><span class="__cf_email__" data-cfemail="fbba97999e898f94d5b1d5b39e89959a959f9e81bb9d9a9ad59c948d">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
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. In response, the FAA published AD 2021-11-15 on June 8, 2021
(86 FR 30380) to require performance of a USI on affected HPT 1st-stage
disks and HPT 2nd-stage disks and, depending on the results of the USI,
removal of the affected HPT disks from service. Compliance time for
performance of the USI in AD 2021-11-15 is based on the specific IAE
V2500 model turbofan engine on which the HPT 1st-stage or 2nd-stage
disk is installed and is required to be performed at the next engine
shop visit or between 3,200-6,700 flight cycles (FCs), depending on the
model turbofan engine, after the effective date of the AD, whichever
occurs first.
Based on the review of investigative findings from this March 2020
event, the manufacturer identified a high-risk subpopulation of parts
that require urgent inspection. The FAA, therefore, published Emergency
AD 2021-11-51 on May 21, 2021 (followed by publication in the Federal
Register on July 2, 2021, as a Final Rule, Request for Comments (86 FR
35217)) requiring performance of a USI within 10 FCs on the highest-
risk HPT 1st-stage disks and HPT 2nd-stage disks and, depending on the
results of the USI, removal of the affected HPT disks from service. The
FAA is now publishing this AD to require performance of a USI on the
remaining high-risk subpopulation of affected HPT 1st-stage disks and
HPT 2nd-stage disks and, depending on the results of the USI, removal
of the affected HPT disks from service. Compliance time is between 100
and 620 FCs after the effective date of this AD and is based on the
specific V2500 IAE turbofan engine model on which the affected disks
are, or have been, installed.
This condition, if not addressed, could result in uncontained HPT
disk failure, damage to the engine, damage to the airplane, and loss of
the airplane. The FAA is issuing this AD to address the unsafe
condition on these products.
FAA's Determination
The FAA is issuing this AD because the agency has 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 Pratt & Whitney (P&W) Special Instruction (SI) No.
112F-21, dated May 24, 2021. The SI identifies the affected HPT 1st-
stage disks and HPT 2nd-stage disks installed on IAE V2522-A5, V2524-
A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and
V2533-A5 model turbofan engines.
The FAA reviewed P&W SI No. 114F-21, dated May 24, 2021. The SI
identifies the affected HPT 2nd-stage disks installed on IAE V2531-E5
model turbofan engines.
The FAA reviewed IAE NMSB No. V2500-ENG-72-0713, Revision 1, dated
[[Page 38411]]
January 26, 2021. The NMSB specifies procedures for a USI of the HPT
1st-stage disk and HPT 2nd-stage disk.
The FAA reviewed IAE NMSB No. V2500-E5-72-0015, dated December 15,
2020. The NMSB 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 and IAE NMSB V2500-E5-72-
0015, dated December 15, 2020, 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 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 with a part eligible for installation.
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 requires the immediate adoption of
this AD without providing an opportunity for public comments prior to
adoption. The FAA has found that the risk to the flying public
justifies foregoing 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. Based on a review of
investigative findings performed since that event, the manufacturer has
identified a high-risk 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 the risk of an uncontained HPT disk failure to be
an urgent safety issue. USI of the HPT 1st-stage and 2nd-stage disks
must be accomplished between 100 FCs and 620 FCs after the effective
date of this AD to prevent additional HPT disk failures and maintain an
acceptable level of safety. This unsafe condition, caused by an
uncontained HPT 1st-stage disk and HPT 2nd-stage disk failure, may
result in damage to the engine, damage to the airplane, and loss of the
airplane. Accordingly, notice and opportunity for prior public comment
are impracticable and contrary to the public interest pursuant to 5
U.S.C. 553(b)(3)(B). In addition, 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 found 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 ``Docket No. FAA-2021-0544 and Project Identifier
AD-2021-00642-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 112 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 $1,942,080
actions necessary to disassemble the hour = $17,340.
engine).
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary
replacement that would be required based on the results of the
inspection. The agency has no way of determining the number of
[[Page 38412]]
aircraft that might need this replacement:
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 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
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:
2021-14-19 International Aero Engines AG: Amendment 39-21646; Docket
No. FAA-2021-0544; Project Identifier AD-2021-00642-E.
(a) Effective Date
This airworthiness directive (AD) is effective August 5, 2021.
(b) Affected ADs
None.
(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 Accomplishment
Instructions, Table 1, of Pratt & Whitney (P&W) Special Instruction
(SI) No. 112F-21, dated May 24, 2021 (P&W SI No. 112F-21); or
(2) HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in
Accomplishment Instructions, Table 2, of P&W SI No. 112F-21, or S/N
listed in Accomplishment Instructions, Table 1, P&W SI No. 114F-21,
dated May 24, 2021 (P&W SI No. 114F-21).
(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 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 an HPT 1st-stage disk, P/N 2A5001, with an S/N listed in
Accomplishment Instructions, Table 1, of P&W SI No. 112F-21, that
has been installed at any time in an IAE V2527E-A5, V2527M-A5,
V2528-D5, V2530-A5, or V2533-A5 model turbofan engine during
operation, within 100 flight cycles (FCs) 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 NMSB V2500-ENG-72-0713, Revision 1.
(2) For an HPT 1st-stage disk, P/N 2A5001, with an S/N listed in
Accomplishment Instructions, Table 1, of P&W SI No. 112F-21, that
has only been installed in an IAE V2522-A5, V2524-A5, V2525-D5, or
V2527-A5 model turbofan engine during operation, within 220 FCs
after the effective date of this AD, perform a USI of the HPT 1st-
stage disk using the Accomplishment Instructions, paragraph 6, of
IAE NMSB V2500-ENG-72-0713, Revision 1.
(3) For an HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in
Accomplishment Instructions, Table 2, of P&W SI No. 112F-21, that
has been installed at any time in an IAE V2527E-A5, V2527M-A5,
V2528-D5, V2530-A5, or V2533-A5 model turbofan engine during
operation, within 385 FCs 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, Revision
1.
(4) For an HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in
Accomplishment Instructions, Table 2, of P&W SI No. 112F-21, that
has only been installed in an IAE V2522-A5, V2524-A5, V2525-D5, or
V2527-A5 model turbofan engine during operation, within 620 FCs
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, Revision 1.
(5) For an HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in
Accomplishment Instructions, Table 1, of P&W SI No. 114F-21, that
has only been installed in an IAE V2531-E5 model turbofan engine
during operation, within 385 FCs 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-E5-72-0015.
[[Page 38413]]
(6) If, during the USI required by paragraphs (g)(1) through (5)
of this AD, a 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, 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) 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, Revision
1, or Appendix A, Tables 1 and 2, of IAE NMSB V2500-E5-72-0015, that
passed the USI required by paragraphs (g)(1) through (5) of this AD;
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,
Revision 1, 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#9adbd4dfb7dbdeb7dbd7d5d9dafcfbfbb4fdf5ec"><span class="__cf_email__" data-cfemail="f2b3bcb7dfb3b6dfb3bfbdb1b2949393dc959d84">[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) 238-7199;
email: <a href="/cdn-cgi/l/email-protection#66270a0403141209482c482e031408070802031c2600070748010910"><span class="__cf_email__" data-cfemail="3978555b5c4b4d56177317715c4b5758575d5c43795f5858175e564f">[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
August 5, 2021.
(i) Pratt & Whitney (P&W) Special Instruction (SI) No. 112F-21,
dated May 24, 2021.
(ii) P&W SI No. 114F-21, dated May 24, 2021.
(4) The following service information was approved for IBR on
July 13, 2021 (86 FR 30380, June 8, 2021).
(i) International Aero Engines (IAE) Non-Modification Service
Bulletin (NMSB) No. V2500-ENG-72-0713, Revision 1, dated January 26,
2021.
(ii) IAE NMSB No. V2500-E5-72-0015, dated December 15, 2020.
(5) 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#563e333a266462162621782322357835393b"><span class="__cf_email__" data-cfemail="066e636a763432467671287372652865696b">[email protected]</span></a>; website:
<a href="http://fleetcare.pw.utc.com">http://fleetcare.pw.utc.com</a>.
(6) You may view this service information at 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.
(7) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, email: <a href="/cdn-cgi/l/email-protection#a8cecdccdacdcf86c4cdcfc9c4e8c6c9dac986cfc7de"><span class="__cf_email__" data-cfemail="422427263027256c2e2725232e022c2330236c252d34">[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 July 15, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-15486 Filed 7-16-21; 4:15 pm]
BILLING CODE 4910-13-P
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