Airworthiness Directives; International Aero Engines, LLC Turbofan Engines, 50610-50614 [2021-19600]
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Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations
for loan guarantees, and when required,
an executed Standard Form LLL,
‘‘Disclosure of Lobbying Activities,’’
(see section 319, Pub. L. 101–121 (31
U.S.C. 1352)).
(4) Executed copy of Form AD–1047,
‘‘Certification Regarding Debarment,
Suspension, and Other Responsibility
Matters—Primary Covered
Transactions.’’
(5) Borrower’s determination of loan
maturity.
(6) A statement that the borrower is or
is not delinquent on any Federal debt,
such as income tax obligations or a loan
or loan guarantee from another Federal
agency. If delinquent, the reasons for the
delinquency must be explained and
RUS will take such explanation into
consideration in deciding whether to
approve the loan. RUS Form 490,
‘‘Application for Telephone Loan or
Guarantee,’’ contains a section for
providing the required statement and
any appropriate explanation.
(7) Any other supporting data
required by the Administrator.
*
*
*
*
*
(f) For all applications that request
funding for retail broadband as defined
in 7 CFR 1735.2, the application must
include all information required for the
public notice as stated in 7 CFR
1735.23(a).
*
*
*
*
*
Subpart J—Final Loan Approval
Procedures
14. Amend § 1737.90 by revising
paragraph (a)(6) to read as follows:
■
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§ 1737.90
Loan approval requirements.
(a) * * *
(6) All environmental review
requirements must be met in accordance
with 7 CFR part 1970. The Agency may
obligate, but not disperse, funds under
the program pursuant to 7 U.S.C. 950cc–
1, before the completion of the
otherwise required environmental,
historical, or other types of reviews if
the Secretary of Agriculture determines
that subsequent site-specific review
shall be adequate and easily
accomplished for the location of towers,
poles, or other broadband facilities in
the service area of the awardee without
compromising the project or the
required reviews.
*
*
*
*
*
Christopher A. McLean,
Acting Administrator, Rural Utilities Service.
[FR Doc. 2021–19319 Filed 9–9–21; 8:45 am]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0780; Project
Identifier AD–2021–00916–E; Amendment
39–21728; AD 2021–19–10]
RIN 2120–AA64
Airworthiness Directives; International
Aero Engines, LLC Turbofan Engines
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:
Mark Taylor, Aviation Safety Engineer,
ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone:
(781) 238–7229; fax: (781) 238–7199;
email: Mark.Taylor@faa.gov.
SUPPLEMENTARY INFORMATION:
Examining the AD Docket
Background
On March 18, 2020, an Airbus Model
A321–231 airplane, powered by IAE
V2533–A5 model turbofan engines,
experienced an uncontained HPT 1ststage disk failure that resulted in highenergy 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 1ststage 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.
Pratt & Whitney (PW) determined that
the failure of the V2533–A5 model
turbofan engine was due to an
undetected subsurface material defect in
an HPT disk that may affect the life of
the part. In June 2021, PW expanded its
root cause analysis to include a review
of records for all other IAE and PW
engines that contain parts of similar
material.
On July 29, 2021, PW provided its
PW1100G analysis results to the FAA.
PW’s analysis identified a different
population of HPT 1st-stage and HPT
2nd-stage disks installed on IAE
PW1122G–JM, PW1124G1–JM,
PW1124G–JM, PW1127G1–JM,
PW1127GA–JM, PW1127G–JM,
PW1129G–JM, PW1130G–JM,
PW1133GA–JM, and PW1133G–JM
model turbofan engines that are also
affected by the unsafe condition in AD
2020–07–51 and require removal from
service. 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.
The FAA is issuing this AD to address
the unsafe condition on these products.
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–0780; or in person at Docket
Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
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.
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; request for
comments.
AGENCY:
The FAA is adopting a new
airworthiness directive (AD) for certain
International Aero Engines, LLC (IAE)
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 AD was
prompted by a root cause analysis of an
event involving an uncontained failure
of a high-pressure turbine (HPT) disk
that resulted in high-energy debris
penetrating the engine cowling on an
Airbus Model A321–231 airplane,
powered by IAE V2533–A5 model
turbofan engines. This AD requires
removing certain HPT 1st-stage and HPT
2nd-stage disks from service. The FAA
is issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective September
27, 2021.
The FAA must receive comments on
this AD by October 25, 2021.
ADDRESSES: You may send comments,
using the procedures found in 14 CFR
11.43 and 11.45, by any of the following
methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: (202) 493–2251.
• 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.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
SUMMARY:
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Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations
AD Requirements
This AD requires the removal from
service of certain HPT 1st-stage and
HPT 2nd-stage disks installed on
PW1122G–JM, PW1124G1–JM,
PW1124G–JM, PW1127G1–JM,
PW1127GA–JM, PW1127G–JM,
PW1129G–JM, PW1130G–JM,
PW1133GA–JM, and PW1133G–JM
model turbofan engines.
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. PW determined that the failure of
the V2533–A5 model turbofan engine
was due to an undetected subsurface
material defect in an HPT disk that may
affect the life of the part. Based on the
follow-on analysis performed since that
event, PW has identified a different
population of affected HPT 1st-stage and
HPT 2nd-stage disks installed on IAE
PW1122G–JM, PW1124G1–JM,
PW1124G–JM, PW1127G1–JM,
PW1127GA–JM, PW1127G–JM,
PW1129G–JM, PW1130G–JM,
PW1133GA–JM, and PW1133G–JM
model turbofan engines that are affected
by the same unsafe condition as
contained in AD 2020–07–51 and
require removal from service. These
HPT disks have the highest risk of
failure and require removal within 30
days after the effective date of this AD
to prevent additional HPT disk failures
and maintain an acceptable level of
safety. This unsafe condition may result
in loss of the airplane. The FAA
considers removal of certain HPT 1ststage and HPT 2nd-stage disks to be an
urgent safety issue. 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–2021–0780
and Project Identifier AD–2021–00916–
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 https://
www.regulations.gov, including any
50611
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 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.
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 3 engines installed on airplanes
of U.S. registry.
The FAA estimates the following
costs to comply with this AD:
ESTIMATED COSTS
Action
Labor cost
Remove HPT 1st-stage or HPT 2nd-stage
disk.
94 work-hours × $85 per hour = $7,990 ........
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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.
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Parts cost
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
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$171,430
Cost per
product
$179,420
Cost on U.S.
operators
$538,260
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
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Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations
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.
The Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
(a) Effective Date
PART 39—AIRWORTHINESS
DIRECTIVES
(c) Applicability
This AD applies to International Aero
Engines, LLC (IAE) 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 an installed:
(1) High-pressure turbine (HPT) 1st-stage
disk, part number (P/N) 30G6201 or
30G7301, with a serial number (S/N) listed in
Figure 1 to paragraph (c) of this AD; or
(2) HPT 2nd-stage disk, P/N 30G5502 or
30G6602, with an S/N listed in Figure 2 to
paragraph (c) of this AD.
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
List of Subjects in 14 CFR Part 39
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
2021–19–10 International Aero Engines,
LLC: Amendment 39–21728; Docket No.
FAA–2021–0780; Project Identifier AD–
2021–00916–E.
■
This airworthiness directive (AD) is
effective September 27, 2021.
(b) Affected ADs
None.
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HPT 1st-Stage Disk PIN
HPT 1st-Stage Disk SIN
30G6201
30G6201
30G6201
30G6201
30G6201
LKLBCG9614
LKLBDX9135
LKLBEF4499
LKLBCL8431
LKLBDX9233
30G6201
30G6201
30G6201
30G6201
30G6201
30G6201
30G6201
30G7301
30G7301
30G7301
LKLBDX9159
LKLBDX9273
LKLBBX3713
LKLBDX9200
LKLBDX9276
LKLBDA1782
LKLBEF4550
LKLBEK6166
LKLBEY0974
LKLBEJ7493
30G7301
30G7301
30G7301
30G7301
30G7301
30G7301
LKLBEY4908
LKLBEP5334
LKLBEX5852
LKLBFA2128
LKLBEY4944
LKLBGF8458
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Figure 1 to Paragraph (c)-HPT 1st-Stage Disk, PIN 30G6201 or 30G7301
Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations
50613
HPT 2nd-Stage Disk PIN
HPT 2nd-Stage Disk SIN
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
30G5502
LKLBCC0lll
LKLBD40504
LKLBD40476
LKLBC29705
LKLBC29734
LKLBCP4546
LKLBCP4502
LKLBC02866
LKLBCP4501
LKLBBX2558
LKLBC02909
LKLBC02820
LKLBC02871
LKLBC02859
LKLBC02877
LKLBBX2564
LKLBCP4555
LKLBBX2576
LKLBC29762
LKLBC02860
LKLBC02881
LKLBC02864
LKLBC02876
LKLBC02880
LKLBD40491
LKLBC02873
LKLBBX2560
LKLBCP4504
LKLBC02840
LKLBD40433
LKLBD40437
30G6602
30G6602
30G6602
30G6602
30G6602
30G6602
30G6602
LKLBEX5800
LKLBEK1972
LKLBEP4213
LKLBFD4429
LKLBFD4445
LKLBGJ4215
LKLBFD4402
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Figure 2 to Paragraph (c)- HPT 2nd-Stage Disk, PIN 30G5502 or 30G6602
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Federal Register / Vol. 86, No. 173 / Friday, September 10, 2021 / Rules and Regulations
(d) Subject
DEPARTMENT OF TRANSPORTATION
Joint Aircraft System Component (JASC)
Code 7250, Turbine Section.
Federal Aviation Administration
(e) Unsafe Condition
14 CFR Part 71
This AD was prompted by an analysis
performed by Pratt & Whitney of 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 1st-stage and HPT 2nd-stage disks.
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 IAE model turbofan engines with an
HPT 1st-stage disk, P/N 30G6201 or 30G7301,
with an S/N listed in Figure 1 to paragraph
(c) of this AD, within 30 days after the
effective days of the AD, remove the HPT 1ststage disk from service.
(2) For IAE model turbofan engines with an
HPT 2nd-stage disk, P/N 30G5502 or
30G6602, with an S/N listed in Figure 2 to
paragraph (c) of this AD, within 30 days after
the effective days of the AD, remove the HPT
2nd-stage disk from service.
(h) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, ECO Branch, FAA, has
the authority to approve AMOCs for this AD,
if requested using the procedures found in 14
CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector
or local Flight Standards District Office, as
appropriate. If sending information directly
to the manager of the certification office,
send it to the attention of the person
identified in paragraph (i) of this AD.
Information may be emailed to: ANE-ADAMOC@faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the local flight standards district office/
certificate holding district office.
(i) Related Information
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; fax: (781) 238–7199; email:
Mark.Taylor@faa.gov.
(j) Material Incorporated by Reference
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None.
Issued on September 7, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–19600 Filed 9–8–21; 11:15 am]
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[Docket No. FAA–2021–0529; Airspace
Docket No. 21–ASO–18]
RIN 2120–AA66
Amendment of Class E Airspace;
Monroe, NC
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
This action amends Class E
airspace extending upward from 700
feet above the surface for CharlotteMonroe Executive Airport, Monroe, NC.
The FAA is taking this action as a result
of the Charlotte Class B Biennial
Review. This action also updates the
airport’s name to Charlotte-Monroe
Executive Airport (formerly Monroe
Airport). In addition, this action updates
the geographic coordinates of the airport
to coincide with the FAA’s database.
Controlled airspace is necessary for the
safety and management of instrument
flight rules (IFR) operations in the area.
DATES: Effective 0901 UTC, December 2,
2021. The Director of the Federal
Register approves this incorporation by
reference action under 1 CFR part 51,
subject to the annual revision of FAA
Order 7400.11 and publication of
conforming amendments.
ADDRESSES: FAA Order 7400.11E,
Airspace Designations and Reporting
Points, and subsequent amendments can
be viewed online at https://
www.faa.gov/air_traffic/publications/.
For further information, you can contact
the Airspace Policy Group, Federal
Aviation Administration, 800
Independence Avenue SW, Washington,
DC 20591; Telephone: (202) 267–8783.
The Order is also available for
inspection at the National Archives and
Records Administration (NARA). For
information on the availability of FAA
Order 7400.11E at NARA, email
fr.inspection@nara.gov or go to https://
www.archives.gov/federal-register/cfr/
ibr-locations.html.
FOR FURTHER INFORMATION CONTACT: John
Fornito, Operations Support Group,
Eastern Service Center, Federal Aviation
Administration, 1701 Columbia Ave.,
College Park, GA 30337; Telephone
(404) 305–6364.
SUPPLEMENTARY INFORMATION:
SUMMARY:
Authority for This Rulemaking
The FAA’s authority to issue rules
regarding aviation safety is found in
Title 49 of the United States Code.
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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. This rulemaking is
promulgated under the authority
described in Subtitle VII, Part A,
Subpart I, Section 40103. Under that
section, the FAA is charged with
prescribing regulations to assign the use
of airspace necessary to ensure the
safety of aircraft and the efficient use of
airspace. This regulation is within the
scope of that authority as it amends the
Class E airspace extending upward from
700 feet above the surface in Monroe,
NC, to support IFR operations in the
area.
History
The FAA published a notice of
proposed rulemaking in the Federal
Register (86 FR 35419, July 6, 2021) for
Docket No. FAA–2021–0529 to amend
Class E airspace extending upward from
700 feet above the surface at CharlotteMonroe Executive Airport, Monroe, NC.
Interested parties were invited to
participate in this rulemaking effort by
submitting written comments on the
proposal to the FAA. One comment
supporting this action was received.
Class E airspace designations are
published in Paragraph 6005 of FAA
Order 7400.11E, dated July 21, 2020,
and effective September 15, 2020, which
is incorporated by reference in 14 CFR
71.1. The Class E airspace designations
listed in this document will be
published subsequently in the Order.
Availability and Summary of
Documents for Incorporation by
Reference
This document amends FAA Order
7400.11E, Airspace Designations and
Reporting Points, dated July 21, 2020,
and effective September 15, 2020. FAA
Order 7400.11E is publicly available as
listed in the ADDRESSES section of this
document. FAA Order 7400.11E lists
Class A, B, C, D, and E airspace areas,
air traffic routes, and reporting points.
The Rule
The FAA is amending 14 CFR part 71
by amending the Class E airspace
extending upward from 700 feet above
the surface at Charlotte-Monroe
Executive Airport, Monroe, NC, by
increasing the radius to 9.0 miles,
(formerly 6.3 miles). In addition, this
action updates the airport’s name to
Charlotte-Monroe Executive Airport
(formerly Monroe Airport) and updates
the geographical coordinates to coincide
with the FAA’s database.
FAA Order 7400.11, Airspace
Designations and Reporting Points, is
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]]>Agencies
[Federal Register Volume 86, Number 173 (Friday, September 10, 2021)]
[Rules and Regulations]
[Pages 50610-50614]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-19600]
=======================================================================
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0780; Project Identifier AD-2021-00916-E;
Amendment 39-21728; AD 2021-19-10]
RIN 2120-AA64
Airworthiness Directives; International Aero Engines, LLC
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, LLC (IAE) 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 AD was
prompted by a root cause analysis of an event involving an uncontained
failure of a high-pressure turbine (HPT) disk that resulted in high-
energy debris penetrating the engine cowling on an Airbus Model A321-
231 airplane, powered by IAE V2533-A5 model turbofan engines. This AD
requires removing certain HPT 1st-stage and HPT 2nd-stage disks from
service. The FAA is issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective September 27, 2021.
The FAA must receive comments on this AD by October 25, 2021.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
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.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0780; 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: Mark Taylor, Aviation Safety Engineer,
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone:
(781) 238-7229; fax: (781) 238-7199; email: [email protected].
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 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 V2522-A5,
V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5,
and V2533-A5 model turbofan engines.
Pratt & Whitney (PW) determined that the failure of the V2533-A5
model turbofan engine was due to an undetected subsurface material
defect in an HPT disk that may affect the life of the part. In June
2021, PW expanded its root cause analysis to include a review of
records for all other IAE and PW engines that contain parts of similar
material.
On July 29, 2021, PW provided its PW1100G analysis results to the
FAA. PW's analysis identified a different population of HPT 1st-stage
and HPT 2nd-stage disks installed on IAE PW1122G-JM, PW1124G1-JM,
PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-
JM, PW1133GA-JM, and PW1133G-JM model turbofan engines that are also
affected by the unsafe condition in AD 2020-07-51 and require removal
from service. 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. 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.
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AD Requirements
This AD requires the removal from service of certain HPT 1st-stage
and HPT 2nd-stage disks installed on PW1122G-JM, PW1124G1-JM, PW1124G-
JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-JM,
PW1133GA-JM, and PW1133G-JM model turbofan engines.
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.
PW determined that the failure of the V2533-A5 model turbofan engine
was due to an undetected subsurface material defect in an HPT disk that
may affect the life of the part. Based on the follow-on analysis
performed since that event, PW has identified a different population of
affected HPT 1st-stage and HPT 2nd-stage disks installed on IAE
PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-
JM, PW1129G-JM, PW1130G-JM, PW1133GA-JM, and PW1133G-JM model turbofan
engines that are affected by the same unsafe condition as contained in
AD 2020-07-51 and require removal from service. These HPT disks have
the highest risk of failure and require removal within 30 days after
the effective date of this AD to prevent additional HPT disk failures
and maintain an acceptable level of safety. This unsafe condition may
result in loss of the airplane. The FAA considers removal of certain
HPT 1st-stage and HPT 2nd-stage disks to be an urgent safety issue.
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-2021-0780 and Project Identifier
AD-2021-00916-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
https://www.regulations.gov, 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 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.
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 3 engines installed on
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Remove HPT 1st-stage or HPT 2nd-stage 94 work-hours x $85 per $171,430 $179,420 $538,260
disk. hour = $7,990.
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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
[[Page 50612]]
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:
2021-19-10 International Aero Engines, LLC: Amendment 39-21728;
Docket No. FAA-2021-0780; Project Identifier AD-2021-00916-E.
(a) Effective Date
This airworthiness directive (AD) is effective September 27,
2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to International Aero Engines, LLC (IAE)
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 an installed:
(1) High-pressure turbine (HPT) 1st-stage disk, part number (P/
N) 30G6201 or 30G7301, with a serial number (S/N) listed in Figure 1
to paragraph (c) of this AD; or
(2) HPT 2nd-stage disk, P/N 30G5502 or 30G6602, with an S/N
listed in Figure 2 to paragraph (c) of this AD.
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(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine
Section.
(e) Unsafe Condition
This AD was prompted by an analysis performed by Pratt & Whitney
of 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
1st-stage and HPT 2nd-stage disks. 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 IAE model turbofan engines with an HPT 1st-stage disk,
P/N 30G6201 or 30G7301, with an S/N listed in Figure 1 to paragraph
(c) of this AD, within 30 days after the effective days of the AD,
remove the HPT 1st-stage disk from service.
(2) For IAE model turbofan engines with an HPT 2nd-stage disk,
P/N 30G5502 or 30G6602, with an S/N listed in Figure 2 to paragraph
(c) of this AD, within 30 days after the effective days of the AD,
remove the HPT 2nd-stage disk from service.
(h) Alternative Methods of Compliance (AMOCs)
(1) The Manager, ECO Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the procedures found in 14 CFR
39.19. In accordance with 14 CFR 39.19, send your request to your
principal inspector or local Flight Standards District Office, as
appropriate. If sending information directly to the manager of the
certification office, send it to the attention of the person
identified in paragraph (i) of this AD. Information may be emailed
to: [email protected].
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
(i) Related Information
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; fax: (781) 238-7199;
email: [email protected].
(j) Material Incorporated by Reference
None.
Issued on September 7, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-19600 Filed 9-8-21; 11:15 am]
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