Airworthiness Directives; General Electric Company Turbofan Engines, 67669-67671 [2021-25870]
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Federal Register / Vol. 86, No. 226 / Monday, November 29, 2021 / Proposed Rules
Done in Washington, DC, this 18th day of
November 2021.
Jack Shere,
Acting Administrator, Animal and Plant
Health Inspection Service.
[FR Doc. 2021–25613 Filed 11–26–21; 8:45 am]
BILLING CODE 3410–34–P
NUCLEAR REGULATORY
COMMISSION
10 CFR Part 50
[NRC–2020–0036]
RIN 3150–AK71
Nuclear Regulatory
Commission.
ACTION: Public meeting.
AGENCY:
khammond on DSKJM1Z7X2PROD with PROPOSALS
FOR FURTHER INFORMATION CONTACT:
[Docket No. FAA–2021–1016; Project
Identifier AD–2021–00625–E]
Jkt 256001
On August 12, 2021, the NRC
published a document in the Federal
Register informing the public that it will
consider in the rulemaking process the
issues raised in a petition for
rulemaking regarding reporting
requirements for nonemergency events
at nuclear power plants (86 FR 44290).
The NRC is in the early stages of
developing a regulatory basis document
that will analyze the regulatory issues,
alternatives to resolve those issues, and
the NRC staff’s recommended
alternative. The NRC will consider the
information shared at the meeting in the
development of the regulatory basis
document.
II. Public Meeting
The public meeting will be held on
December 9, 2021, from 2:00 p.m. to
4:00 p.m. (ET). Interested stakeholders
may attend via telephone or online
seminar. The purpose of the meeting is
to provide background and status
information on this rulemaking activity
and to obtain stakeholder input to
enhance the NRC’s understanding of the
associated issues. The NRC will not
provide formal written responses to the
oral comments made at this meeting.
Information for the teleconference and
online seminar is available in the
meeting notice, which can be accessed
through the NRC’s public website at:
https://www.nrc.gov/pmns/mtg or in
ADAMS under Accession Number
ML21323A177.
If you would like to make a
presentation during this meeting, please
call or email the meeting contact prior
to the meeting.
Dated: November 23, 2021.
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Fmt 4702
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[FR Doc. 2021–25928 Filed 11–26–21; 8:45 am]
BILLING CODE 7590–01–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
RIN 2120–AA64
Airworthiness Directives; General
Electric Company Turbofan Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
I. Background
The U.S. Nuclear Regulatory
Commission (NRC) plans to hold a
public meeting to discuss a rulemaking
activity related to reporting
requirements for nonemergency events
at nuclear power plants. The purpose of
the meeting is to provide background
and status information on the
rulemaking and to obtain stakeholder
input to enhance the NRC’s
understanding of the associated issues.
DATES: The public meeting will be held
on December 9, 2021. See Section II,
Public Meeting, of this document for
more information on the meeting.
ADDRESSES: Please refer to Docket ID
NRC–2020–0036 when contacting the
NRC about the availability of
information regarding this public
meeting. You may obtain publicly
available information related to this
action by any of the following methods:
• Federal Rulemaking website: Go to
https://www.regulations.gov and search
for Docket ID NRC–2020–0036. Address
questions about NRC dockets to Dawn
Forder; telephone: 301–415–3407;
email: Dawn.Forder@nrc.gov. For
technical questions contact the
individuals listed in the FOR FURTHER
INFORMATION CONTACT section of this
document.
• NRC’s Agencywide Documents
Access and Management System
(ADAMS): You may obtain publicly
available documents online in the
ADAMS Public Documents collection at
https://www.nrc.gov/reading-rm/
adams.html. To begin the search, select
‘‘Begin Web-based ADAMS Search.’’ For
problems with ADAMS, please contact
the NRC’s Public Document Room
reference staff at 1–800–397–4209, at
15:59 Nov 26, 2021
For the Nuclear Regulatory Commission.
John R. Tappert,
Director, Division of Rulemaking,
Environmental, and Financial Support, Office
of Nuclear Material Safety and Safeguard.
SUPPLEMENTARY INFORMATION:
SUMMARY:
VerDate Sep<11>2014
301–415–4737, or by email to
PDR.Resource@nrc.gov.
• NRC’s PDR: You may examine and
purchase copies of public documents,
by appointment, at the NRC’s Public
Document Room (PDR), Room P1 B35,
One White Flint North, 11555 Rockville
Pike, Rockville, Maryland 20852. To
make an appointment to visit the PDR,
please send an email to PDR.Resource@
nrc.gov or call 1–800–397–4209 or 301–
415–4737, between 8:00 a.m. and 4:00
p.m. (ET), Monday through Friday,
except Federal holidays.
George Tartal, Office of Nuclear Material
Safety and Safeguards, U.S. Nuclear
Regulatory Commission, Washington,
DC 20555–0001; telephone: 301–415–
0016, email: George.Tartal@nrc.gov.
Reporting Requirements for
Nonemergency Events at Nuclear
Power Plants
67669
The FAA proposes to adopt a
new airworthiness directive (AD) for all
General Electric Company (GE) Passport
20–17BB1A, Passport 20–18BB1A, and
Passport 20–19BB1A model turbofan
engines. This proposed AD was
prompted by a report of a manufacturing
quality escape that requires a reduction
to the life limit of certain high-pressure
turbine (HPT) rotor stage 1 disks. This
proposed AD would require revising the
Airworthiness Limitations section (ALS)
of the GE Passport 20 Line Maintenance
Manual and the operator’s existing
approved continuous airworthiness
maintenance program (CAMP) to
incorporate a reduced life limit for
certain HPT rotor stage 1 disks. 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 January 13,
2022.
SUMMARY:
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.
For service information identified in
this NPRM, contact General Electric
ADDRESSES:
E:\FR\FM\29NOP1.SGM
29NOP1
67670
Federal Register / Vol. 86, No. 226 / Monday, November 29, 2021 / Proposed Rules
Company, 1 Neumann Way, Cincinnati,
OH 45215; phone: (513) 552–3272;
email: aviation.fleetsupport@ge.com;
website: www.ge.com. You may view
this service information at the FAA,
Airworthiness Products Section,
Operational Safety Branch, 1200 District
Avenue, Burlington, MA 01803. For
information on the availability of this
material at the FAA, call (817) 222–
5110.
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 NPRM.
Confidential Business Information
CBI is commercial or financial
You may examine the AD docket at
information that is both customarily and
https://www.regulations.gov by
actually treated as private by its owner.
searching for and locating Docket No.
Under the Freedom of Information Act
FAA–2021–1016; or in person at Docket
(FOIA) (5 U.S.C. 552), CBI is exempt
Operations between 9 a.m. and 5 p.m.,
from public disclosure. If your
Monday through Friday, except Federal
comments responsive to this NPRM
holidays. The AD docket contains this
contain commercial or financial
NPRM, any comments received, and
information that is customarily treated
other information. The street address for
as private, that you actually treat as
Docket Operations is listed above.
private, and that is relevant or
responsive to this NPRM, it is important
FOR FURTHER INFORMATION CONTACT:
that you clearly designate the submitted
Scott Stevenson, Aviation Safety
comments as CBI. Please mark each
Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803; page of your submission containing CBI
as ‘‘PROPIN.’’ The FAA will treat such
phone: (781) 238–7132; fax: (781) 238–
7199; email: Scott.M.Stevenson@faa.gov. marked submissions as confidential
under the FOIA, and they will not be
SUPPLEMENTARY INFORMATION:
placed in the public docket of this
NPRM. Submissions containing CBI
Comments Invited
should be sent to Scott Stevenson,
The FAA invites you to send any
Aviation Safety Engineer, ECO Branch,
written relevant data, views, or
FAA, 1200 District Avenue, Burlington,
arguments about this proposal. Send
MA 01803. Any commentary that the
your comments to an address listed
FAA receives which is not specifically
under ADDRESSES. Include ‘‘Docket No.
designated as CBI will be placed in the
FAA–2021–1016; Project Identifier AD– public docket for this rulemaking.
2021–00625–E’’ at the beginning of your
Background
comments. The most helpful comments
reference a specific portion of the
The FAA received a report from GE of
proposal, explain the reason for any
a manufacturing quality escape that
recommended change, and include
identified a certain population of HPT
supporting data. The FAA will consider rotor stage 1 disks that did not meet the
all comments received by the closing
design specification. GE determined that
date and may amend this proposal
machining and inspection of the
because of those comments.
affected HPT rotor stage 1 disks was
Examining the AD Docket
inconsistent with the engineering
drawing. Further analysis by GE
determined that the nonconformance at
the forward and aft hooks of the HPT
rotor stage 1 disks may cause the disks
to fail prematurely and, therefore, the
life limit of the affected HPT rotor stage
1 disks require reduction. As a result,
GE decreased the life limit of the
affected HPT rotor stage 1 disks. This
condition, if not addressed, could result
in uncontained disk release, damage to
the engine, and damage to the airplane.
FAA’s Determination
The FAA is issuing this NPRM after
determining that the unsafe condition
described previously is likely to exist or
develop on other products of the same
type design.
Related Service Information
The FAA reviewed GE Service
Bulletin PASSPORT20–A–72–00–0116–
00A–930A–D, Issue 002, dated July 22,
2021. This service information describes
procedures for removing a certain
population of HPT rotor stage 1 disks
from service and provides serial
numbers of the affected HPT rotor stage
1 disks.
Proposed AD Requirements in This
NPRM
This proposed AD would require
revising the ALS of the GE Passport 20
Line Maintenance Manual, GEK 112062,
and the operator’s existing approved
CAMP to incorporate a reduced life
limit for certain HPT rotor stage 1 disks.
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 78
engines installed on airplanes of U.S.
registry.
The FAA estimates the following
costs to comply with this proposed AD:
ESTIMATED COSTS
Action
Labor cost
Revise the ALS of the Line Maintenance Manual and
the operator’s existing approved CAMP.
1 work-hour × $85 per hour = $85 ..
khammond on DSKJM1Z7X2PROD with PROPOSALS
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.
VerDate Sep<11>2014
15:59 Nov 26, 2021
Jkt 256001
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.
PO 00000
Frm 00010
Fmt 4702
Sfmt 4702
Cost per
product
Parts cost
$0
$85
Cost on U.S.
operators
$6,630
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
E:\FR\FM\29NOP1.SGM
29NOP1
Federal Register / Vol. 86, No. 226 / Monday, November 29, 2021 / Proposed Rules
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 this proposed regulation:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Would not affect intrastate
aviation in Alaska, and
(3) Would not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
the FAA proposes to amend 14 CFR part
39 as follows:
20–18BB1A, and Passport 20–19BB1A model
turbofan engines.
(d) Subject
PART 39—AIRWORTHINESS
DIRECTIVES
Joint Aircraft System Component (JASC)
Code 7250, Turbine Section.
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
67671
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
General Electric Company: Docket No. FAA–
2021–1016; Project Identifier AD–2021–
00625–E.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by January 13,
2022.
(b) Affected ADs
None.
The Proposed Amendment
(c) Applicability
Accordingly, under the authority
delegated to me by the Administrator,
This AD applies to General Electric
Company (GE) Passport 20–17BB1A, Passport
(e) Unsafe Condition
This AD was prompted by a manufacturing
quality escape that requires a reduction to the
life limit for certain HPT rotor stage 1 disks.
The FAA is issuing this AD to prevent failure
of the HPT rotor stage 1 disk. The unsafe
condition, if not addressed, could result in
uncontained disk release, damage to the
engine, and damage to the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Action
Within 120 days after the effective date of
this AD, revise the airworthiness limitations
section of the existing maintenance manual
for your engine and the operator’s existing
approved continuous airworthiness
maintenance program by adding Figure 1 to
paragraph (g) of this AD.
Figure 1 to Paragraph (g) - Passport 20-17BB1A, Passport 20-18BB1A, and
Passport 20-19BB1A Model Turbofan Engines and Life Limits
Part
Number
Affected
Population
by Serial
Number
HPT
Rotor
Stage 1
Disk
2471M11P02 GE SB 720116, Table
1
Note 1 to paragraph (g): Where Figure 1 to
paragraph (g) refers to ‘‘Life Cycles,’’ for the
purpose of this AD, this refers to life cycles
since new.
khammond on DSKJM1Z7X2PROD with PROPOSALS
(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)(1) of this AD.
VerDate Sep<11>2014
15:59 Nov 26, 2021
Jkt 256001
Life
Cycles for
Passport
2017BB1A
Life
Cycles for
Passport
2018BB1A
Life
Cycles for
Passport
2019BB1A
3,800
3,800
3,800
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
(1) For more information about this AD,
contact Scott Stevenson, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone: (781)
238–7132; fax: (781) 238–7199; email:
Scott.M.Stevenson@faa.gov.
(2) For service information identified in
this AD, contact General Electric Company,
1 Neumann Way, Cincinnati, OH 45215;
PO 00000
Frm 00011
Fmt 4702
Sfmt 4702
phone: (513) 552–3272; email:
aviation.fleetsupport@ge.com; website:
www.ge.com. You may view this referenced
service information at the FAA,
Airworthiness Products Section, Operational
Safety Branch, 1200 District Avenue,
Burlington, MA 01803. For information on
the availability of this material at the FAA,
call (817) 222–5110.
Issued on November 22, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–25870 Filed 11–26–21; 8:45 am]
BILLING CODE 4910–13–P
E:\FR\FM\29NOP1.SGM
29NOP1
EP29NO21.007</GPH>
Part
Name
]]>Agencies
[Federal Register Volume 86, Number 226 (Monday, November 29, 2021)]
[Proposed Rules]
[Pages 67669-67671]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-25870]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-1016; Project Identifier AD-2021-00625-E]
RIN 2120-AA64
Airworthiness Directives; General Electric Company Turbofan
Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all General Electric Company (GE) Passport 20-17BB1A, Passport 20-
18BB1A, and Passport 20-19BB1A model turbofan engines. This proposed AD
was prompted by a report of a manufacturing quality escape that
requires a reduction to the life limit of certain high-pressure turbine
(HPT) rotor stage 1 disks. This proposed AD would require revising the
Airworthiness Limitations section (ALS) of the GE Passport 20 Line
Maintenance Manual and the operator's existing approved continuous
airworthiness maintenance program (CAMP) to incorporate a reduced life
limit for certain HPT rotor stage 1 disks. 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 January 13,
2022.
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.
For service information identified in this NPRM, contact General
Electric
[[Page 67670]]
Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513) 552-3272;
email: [email protected]; website: www.ge.com. You may view
this service information at the FAA, Airworthiness Products Section,
Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803.
For information on the availability of this material at the FAA, call
(817) 222-5110.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-1016; 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: Scott Stevenson, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7132; fax: (781) 238-7199; email:
[email protected].
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-2021-1016; Project Identifier
AD-2021-00625-E'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
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 NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to Scott
Stevenson, 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 received a report from GE of a manufacturing quality escape
that identified a certain population of HPT rotor stage 1 disks that
did not meet the design specification. GE determined that machining and
inspection of the affected HPT rotor stage 1 disks was inconsistent
with the engineering drawing. Further analysis by GE determined that
the nonconformance at the forward and aft hooks of the HPT rotor stage
1 disks may cause the disks to fail prematurely and, therefore, the
life limit of the affected HPT rotor stage 1 disks require reduction.
As a result, GE decreased the life limit of the affected HPT rotor
stage 1 disks. This condition, if not addressed, could result in
uncontained disk release, damage to the engine, and damage to the
airplane.
FAA's Determination
The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.
Related Service Information
The FAA reviewed GE Service Bulletin PASSPORT20-A-72-00-0116-00A-
930A-D, Issue 002, dated July 22, 2021. This service information
describes procedures for removing a certain population of HPT rotor
stage 1 disks from service and provides serial numbers of the affected
HPT rotor stage 1 disks.
Proposed AD Requirements in This NPRM
This proposed AD would require revising the ALS of the GE Passport
20 Line Maintenance Manual, GEK 112062, and the operator's existing
approved CAMP to incorporate a reduced life limit for certain HPT rotor
stage 1 disks.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 78 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
----------------------------------------------------------------------------------------------------------------
Revise the ALS of the Line Maintenance 1 work-hour x $85 per $0 $85 $6,630
Manual and the operator's existing hour = $85.
approved CAMP.
----------------------------------------------------------------------------------------------------------------
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
[[Page 67671]]
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 this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
General Electric Company: Docket No. FAA-2021-1016; Project
Identifier AD-2021-00625-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by January 13, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to General Electric Company (GE) Passport 20-
17BB1A, Passport 20-18BB1A, and Passport 20-19BB1A model turbofan
engines.
(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine
Section.
(e) Unsafe Condition
This AD was prompted by a manufacturing quality escape that
requires a reduction to the life limit for certain HPT rotor stage 1
disks. The FAA is issuing this AD to prevent failure of the HPT
rotor stage 1 disk. The unsafe condition, if not addressed, could
result in uncontained disk release, damage to the engine, and damage
to the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Action
Within 120 days after the effective date of this AD, revise the
airworthiness limitations section of the existing maintenance manual
for your engine and the operator's existing approved continuous
airworthiness maintenance program by adding Figure 1 to paragraph
(g) of this AD.
[GRAPHIC] [TIFF OMITTED] TP29NO21.007
Note 1 to paragraph (g): Where Figure 1 to paragraph (g) refers
to ``Life Cycles,'' for the purpose of this AD, this refers to life
cycles since new.
(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)(1) 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
(1) For more information about this AD, contact Scott Stevenson,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7132; fax: (781) 238-7199;
email: [email protected].
(2) For service information identified in this AD, contact
General Electric Company, 1 Neumann Way, Cincinnati, OH 45215;
phone: (513) 552-3272; email: [email protected]; website:
www.ge.com. You may view this referenced service information at the
FAA, Airworthiness Products Section, Operational Safety Branch, 1200
District Avenue, Burlington, MA 01803. For information on the
availability of this material at the FAA, call (817) 222-5110.
Issued on November 22, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-25870 Filed 11-26-21; 8:45 am]
BILLING CODE 4910-13-P
