Airworthiness Directives; Pratt & Whitney Division Engines, 67939-67942 [2023-21739]
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Federal Register / Vol. 88, No. 190 / Tuesday, October 3, 2023 / Rules and Regulations
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,
(2) Will not affect intrastate aviation
in Alaska, and
(3) Will 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 Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
2023–18–08 Dassault Aviation:
Amendment 39–22549; Docket No.
FAA–2023–1402; Project Identifier
MCAI–2023–00324–T.
(a) Effective Date
This airworthiness directive (AD) is
effective November 7, 2023.
(b) Affected ADs
None.
ddrumheller on DSK120RN23PROD with RULES1
(c) Applicability
This AD applies to Dassault Aviation
Model MYSTERE–FALCON 900, FALCON
900EX, FALCON 2000, and FALCON 2000EX
airplanes, certificated in any category, as
identified in European Union Aviation Safety
Agency (EASA) AD 2023–0041, dated
February 21, 2023 (EASA AD 2023–0041).
(d) Subject
Air Transport Association (ATA) of
America Code 30, Ice and Rain Protection.
(e) Unsafe Condition
This AD was prompted by reports of the
wing anti-icing (WAI) system leaking in the
wing leading edge. The FAA is issuing this
AD to address leaks in the WAI system. The
unsafe condition, if not addressed, could lead
to a loss of performance of the WAI
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16:51 Oct 02, 2023
Jkt 262001
protection system, possibly resulting in
reduced control of the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Requirements
Except as specified in paragraph (h) of this
AD: Comply with all required actions and
compliance times specified in, and in
accordance with, EASA AD 2023–0041.
(h) Exceptions to EASA AD 2023–0041
(1) Where EASA AD 2023–0041 refers to its
effective date, this AD requires using the
effective date of this AD.
(2) Where paragraph (2) of EASA AD 2023–
0041 specifies actions if ‘‘any discrepancy [as
defined in the applicable inspection SB] is
found,’’ for this AD, discrepancies are
defined as incorrect installation,
deformation, leakage, signs of overheating,
and lack of free rotation of the clamp around
the two ferrules.
(3) This AD does not adopt the ‘‘Remarks’’
section of EASA AD 2023–0041.
(i) Additional AD Provisions
The following provisions also apply to this
AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Validation 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
responsible Flight Standards Office, as
appropriate. If sending information directly
to the manager of the International Validation
Branch, mail it to the address identified in
paragraph (j) of this AD or email to: 9-AVSAIR-730-AMOC@faa.gov. If mailing
information, also submit information by
email. Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any
requirement in this AD to obtain instructions
from a manufacturer, the instructions must
be accomplished using a method approved
by the Manager, International Validation
Branch, FAA; or EASA; or Dassault
Aviation’s EASA Design Organization
Approval (DOA). If approved by the DOA,
the approval must include the DOAauthorized signature.
(j) Additional Information
For more information about this AD,
contact Tom Rodriguez, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone 206–
231–3226; email tom.rodriguez@faa.gov.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference 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 this AD specifies otherwise.
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67939
(i) European Union Aviation Safety Agency
(EASA) AD 2023–0041, dated February 21,
2023.
(ii) [Reserved]
(3) For EASA AD 2023–0041, contact
EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; telephone +49 221 8999
000; email ADs@easa.europa.eu; website
easa.europa.eu. You may find this EASA AD
on the EASA website ad.easa.europa.eu.
(4) You may view this material at the FAA,
Airworthiness Products Section, Operational
Safety Branch, 2200 South 216th Street, Des
Moines, WA. For information on the
availability of this material at the FAA, call
206–231–3195.
(5) You may view this material that is
incorporated by reference at the National
Archives and Records Administration
(NARA). For information on the availability
of this material at NARA, email
fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on September 8, 2023.
Ross Landes,
Deputy Director for Regulatory Operations,
Compliance & Airworthiness Division,
Aircraft Certification Service.
[FR Doc. 2023–21717 Filed 10–2–23; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2023–0940; Project
Identifier AD–2022–01521–E; Amendment
39–22552; AD 2023–19–02]
RIN 2120–AA64
Airworthiness Directives; Pratt &
Whitney Division Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is superseding
Airworthiness Directive (AD) 2018–21–
11, which applied to all Pratt & Whitney
Division (PW) Model PW4074D,
PW4077D, PW4084D, PW4090, and
PW4090–3 engines with a low-pressure
compressor (LPC) fan hub, part number
(P/N) 51B821 or P/N 52B521, installed.
AD 2018–21–11 required performing
repetitive eddy current inspections
(ECIs) and fluorescent penetrant
inspections (FPIs) for cracks in certain
LPC fan hubs and removing LPC fan
hubs from service that fail any
inspection. Since the FAA issued AD
2018–21–11, the FAA determined that
affected LPC fan hub assemblies can
meet the published certificated life limit
without the need for the required
repetitive FPI inspections in AD 2018–
21–11, and the repetitive ECI
SUMMARY:
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Federal Register / Vol. 88, No. 190 / Tuesday, October 3, 2023 / Rules and Regulations
inspections require shortened intervals.
Based on a report of another incident,
the FAA determined that the unsafe
condition is likely to exist or develop on
additional LPC fan hub assemblies and
PW model engines. This AD expands
the applicability to include Model
PW4074, PW4074D, PW4077,
PW4077D, PW4084D, PW4090, and
PW4090–3 engines with any part
number LPC fan hub assembly installed
and requires performing repetitive ECIs
of the LPC fan hub assembly and,
depending on the results of the
inspections, removing the LPC fan hub
assembly from service. The FAA is
issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective November 7,
2023.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of November 7, 2023.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2023–0940; 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
address for Docket Operations is U.S.
Department of Transportation, Docket
Operations, M–30, West Building
Ground Floor, Room W12–140, 1200
New Jersey Avenue SE, Washington, DC
20590.
Material Incorporated by Reference:
• For Pratt & Whitney Division
service information identified in this
final rule, contact Pratt & Whitney
Division, 400 Main Street, East Hartford,
CT 06118; phone: (860) 565–0140;
email: help24@prattwhitney.com;
website: connect.prattwhitney.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. It is also
available at regulations.gov under
Docket No. FAA–2023–0940.
FOR FURTHER INFORMATION CONTACT:
Carol Nguyen, Aviation Safety Engineer,
FAA, 2200 South 216th Street, Des
Moines, WA 98198; phone: (781) 238–
7655; email: carol.nguyen@faa.gov.
SUPPLEMENTARY INFORMATION:
VerDate Sep<11>2014
16:51 Oct 02, 2023
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Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2018–21–11,
Amendment 39–19469 (83 FR 54663,
October 31, 2018) (‘‘AD 2018–21–11’’).
AD 2018–21–11 applied to all PW
Model PW4074, PW4074D, PW4077,
PW4077D, PW4084D, PW4090, and
PW4090–3 engines. The NPRM
published in the Federal Register on
May 23, 2023 (88 FR 32978), which
proposed to supersede AD 2018–21–11.
The NPRM was prompted by an
updated analysis by the engine
manufacturer, which indicated certain
LPC fan hubs could crack before their
published life limit. However, the FAA
determined that affected LPC fan hub
assemblies can meet the published
certificated life limit without the need
for the required repetitive FPI
inspections in AD 2018–21–11, and the
repetitive ECI inspections require
shortened intervals. Additionally, the
FAA also received a report of an
uncontained failure of the fan hub
assembly on an Engine Alliance GP7270
engine on an Air France flight.
Investigation of this uncontained failure
revealed that, due to the similarity of
design and material processing for the
LPC fan hub assembly, the ECI
inspections should be done on all LPC
fan hub assembly part numbers installed
on PW Model PW4074, PW4074D,
PW4077, PW4077D, PW4084D,
PW4090, and PW4090–3 engines. In the
NPRM, the FAA proposed to expand the
applicability to include Model PW4074,
PW4074D, PW4077, PW4077D,
PW4084D, PW4090, and PW4090–3
engines with any P/N LPC fan hub
assembly installed. In the NPRM, the
FAA also proposed to require
performing repetitive ECIs of the LPC
fan hub assembly and, depending on the
results of the inspections, removing the
LPC fan hub assembly from service. The
FAA is issuing this AD to prevent
failure of the LPC fan hub assembly.
This condition, if not addressed, could
result in uncontained debris release,
damage to the engine, and damage to the
aircraft.
Actions Since the NPRM Was Issued
Since the FAA published the NPRM,
PW revised Alert Service Bulletin (ASB)
PW4G–112–A72–362, Revision No. 1,
dated January 20, 2022, to ASB PW4G–
112–A72–362, Revision No. 2, dated
August 2, 2023. This service bulletin
revision does not include the
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specification to remove LPC fan hub
assemblies with reportable indications
from service. PW also added
instructions pertaining to reporting
inspection results.
As a result, the FAA changed
paragraph (g)(2) from ‘‘If a reportable or
rejectable indication is found’’ to ‘‘If a
rejectable indication is found,’’ added
paragraph (j), Credit for Previous
Actions, to give full credit for anyone
already accomplishing this action before
the effective date using Revision No. 1,
and re-designated subsequent
paragraphs accordingly. This AD does
not require reporting inspection results.
Discussion of Final Airworthiness
Directive
Comments
The FAA received comments from
two commenters. Commenters included
The Boeing Company and The Air Line
Pilots Association, International. Both
commenters support the NPRM without
change.
Conclusion
The FAA reviewed the relevant data,
considered the comments received, and
determined that air safety requires
adopting the AD as proposed.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these
products. Except for minor editorial
changes, which include updating the
service information and removing the
requirement for removing LPC fan hub
assemblies with reportable indications
from service, this AD is adopted as
proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Pratt & Whitney
ASB PW4G–112–A72–362, Revision No.
2, dated August 2, 2023. This service
information specifies procedures for
ECIs of the LPC fan hub assembly for
cracks. This service information also
specifies reporting inspection results to
PW.
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.
Costs of Compliance
The FAA estimates that this AD
affects 65 engines installed on airplanes
of U.S. registry.
The FAA estimates the following
costs to comply with this AD:
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Federal Register / Vol. 88, No. 190 / Tuesday, October 3, 2023 / Rules and Regulations
ESTIMATED COSTS
Action
Labor cost
Parts cost
Cost per
product
Cost on U.S.
operators
Perform ECI of LPC fan hub assembly ..........
14 work-hours × $85 per hour = $1,190 ........
$0
$1,190
$77,350
The FAA estimates the following
costs to do any necessary replacements
that would be required based on the
results of the inspection. The agency has
no way of determining the number of
engines that might need this
replacement:
ON-CONDITION COSTS
Action
Labor cost
Parts cost
Cost per product
Replace LPC fan hub assembly ..........
65 work-hours × $85 per hour = $5,525 .......................................
$1,194,000
$1,199,525
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.
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Regulatory Findings
The FAA has determined that 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,
(2) Will not affect intrastate aviation
in Alaska, and
(3) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
VerDate Sep<11>2014
16:51 Oct 02, 2023
Jkt 262001
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
1. The authority citation for part 39
continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
2018–21–11, Amendment 39–19469 (83
FR 54663, October 31, 2018); and
■ b. Adding the following new
airworthiness directive:
■
■
2023–19–02 Pratt & Whitney Division:
Amendment 39–22552; Docket No.
FAA–2023–0940; Project Identifier AD–
2022–01521–E.
(a) Effective Date
This airworthiness directive (AD) is
effective November 7, 2023.
(b) Affected ADs
This AD replaces AD 2018–21–11,
Amendment 39–19469 (83 FR 54663, October
31, 2018).
(c) Applicability
This AD applies to all Pratt & Whitney
Division Model PW4074, PW4074D, PW4077,
PW4077D, PW4084D, PW4090, and PW4090–
3 engines.
(d) Subject
Joint Aircraft System Component (JASC)
Code 7230, Turbine Engine Compressor
Section.
(e) Unsafe Condition
This AD was prompted by an updated
analysis by the engine manufacturer, which
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(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
■
§ 39.13
indicated certain low-pressure compressor
(LPC) fan hubs could crack before their
published life limit. We are issuing this AD
to prevent failure of the LPC fan hub. The
unsafe condition, if not addressed, could
result in uncontained hub release, damage to
the engine, and damage to the airplane.
(1) Before accumulating 550 flight cycles
(FC) after the effective date of this AD, and
thereafter at intervals not to exceed 550 FC
since the last eddy current inspection (ECI),
perform an ECI of the LPC fan hub assembly,
in accordance with the Accomplishment
Instructions, For Engines Installed on
Aircraft, paragraph 2., or For Engines Not
Installed on Aircraft, paragraph 3; of Pratt &
Whitney Alert Service Bulletin (ASB) PW4G–
112–A72–362, Revision No. 2, dated August
2, 2023 (ASB PW4G–112–A72–362, Revision
2).
(2) If a rejectable indication is found during
the inspections required by paragraph (g)(1)
of this AD, before further flight, replace the
LPC fan hub assembly with a part eligible for
installation.
(h) Installation Prohibition
After the effective date of this AD, do not
install an LPC fan hub assembly on any
engine, unless it is a part eligible for
installation as defined in paragraph (k) of this
AD.
(i) No Reporting Requirement
This AD does not require reporting certain
information to the manufacturer as specified
in ASB PW4G–112–A72–362, Revision 2.
(j) Credit for Previous Actions
Inspections and corrective actions on an
engine, accomplished before the effective
date of this AD in accordance with the
instructions of Pratt & Whitney ASB PW4G–
112–A72–362, Revision No. 1, dated January
20, 2022, are acceptable to comply with the
requirements of paragraph (g)(1) of this AD.
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Federal Register / Vol. 88, No. 190 / Tuesday, October 3, 2023 / Rules and Regulations
(k) Definitions
For the purposes of this AD, a ‘‘part
eligible for installation’’ is an affected LPC
fan hub assembly that has been inspected as
required by paragraph (g)(1) of this AD and
does not have a rejectable or reportable
indication or a LPC fan hub assembly with
zero cycles since new.
(1) The Manager, AIR–520, Continued
Operational Safety 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 (m)(1) of this AD.
(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.
(m) Additional Information
(1) For more information about this AD,
contact Carol Nguyen, Aviation Safety
Engineer, FAA, 2200 South 216th Street, Des
Moines, WA 98198; phone: (781) 238–7655;
email: carol.nguyen@faa.gov.
(2) Service information identified in this
AD that is not incorporated by reference is
available at the addresses specified in
paragraphs (n)(3) and (4) of this AD.
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(n) 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.
(i) Pratt & Whitney Alert Service Bulletin
PW4G–112–A72–362, Revision No. 2, dated
August 2, 2023.
(ii) [Reserved]
(3) For service information identified in
this AD, contact Pratt & Whitney Division,
400 Main Street, East Hartford, CT 06118;
phone: (860) 565–0140; email: help24@
prattwhitney.com; website:
connect.prattwhitney.com.
(4) 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 (817) 222–5110.
(5) 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: fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
16:51 Oct 02, 2023
Jkt 262001
[FR Doc. 2023–21739 Filed 10–2–23; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
(l) Alternative Methods of Compliance
(AMOCs)
VerDate Sep<11>2014
Issued on September 15, 2023.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
Federal Aviation Administration
14 CFR Part 97
[Docket No. 31511; Amdt. No. 4082]
Standard Instrument Approach
Procedures, and Takeoff Minimums
and Obstacle Departure Procedures;
Miscellaneous Amendments
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
This rule amends, suspends,
or removes Standard Instrument
Approach Procedures (SIAPs) and
associated Takeoff Minimums and
Obstacle Departure Procedures for
operations at certain airports. These
regulatory actions are needed because of
the adoption of new or revised criteria,
or because of changes occurring in the
National Airspace System, such as the
commissioning of new navigational
facilities, adding new obstacles, or
changing air traffic requirements. These
changes are designed to provide for the
safe and efficient use of the navigable
airspace and to promote safe flight
operations under instrument flight rules
at the affected airports.
DATES: This rule is effective October 3,
2023. The compliance date for each
SIAP, associated Takeoff Minimums,
and ODP is specified in the amendatory
provisions.
The incorporation by reference of
certain publications listed in the
regulations is approved by the Director
of the Federal Register as of October 3,
2023.
ADDRESSES: Availability of matter
incorporated by reference in the
amendment is as follows:
SUMMARY:
For Examination
1. U.S. Department of Transportation,
Docket Ops–M30, 1200 New Jersey
Avenue SE, West Bldg., Ground Floor,
Washington, DC 20590–0001;
2. The FAA Air Traffic Organization
Service Area in which the affected
airport is located;
3. The office of Aeronautical
Information Services, 6500 South
MacArthur Blvd., Oklahoma City, OK
73169 or,
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4. The National Archives and Records
Administration (NARA).
For information on the availability of
this material at NARA, email
fr.inspection@nara.gov or go to: https://
www.archives.gov/federal-register/cfr/
ibr-locations.html.
Availability
All SIAPs and Takeoff Minimums and
ODPs are available online free of charge.
Visit the National Flight Data Center
online at nfdc.faa.gov to register.
Additionally, individual SIAP and
Takeoff Minimums and ODP copies may
be obtained from the FAA Air Traffic
Organization Service Area in which the
affected airport is located.
FOR FURTHER INFORMATION CONTACT:
Thomas J. Nichols, Flight Procedures
and Airspace Group, Flight
Technologies and Procedures Division,
Flight Standards Service, Federal
Aviation Administration. Mailing
Address: FAA Mike Monroney
Aeronautical Center, Flight Procedures
and Airspace Group, 6500 South
MacArthur Blvd., STB Annex, Bldg. 26,
Room 217, Oklahoma City, OK 73099.
Telephone: (405) 954–1139.
SUPPLEMENTARY INFORMATION: This rule
amends 14 CFR part 97 by amending the
referenced SIAPs. The complete
regulatory description of each SIAP is
listed on the appropriate FAA Form
8260, as modified by the National Flight
Data Center (NFDC)/Permanent Notice
to Airmen (P–NOTAM), and is
incorporated by reference under 5
U.S.C. 552(a), 1 CFR part 51, and 14
CFR 97.20. The large number of SIAPs,
their complex nature, and the need for
a special format make their verbatim
publication in the Federal Register
expensive and impractical. Further,
airmen do not use the regulatory text of
the SIAPs, but refer to their graphic
depiction on charts printed by
publishers of aeronautical materials.
Thus, the advantages of incorporation
by reference are realized and
publication of the complete description
of each SIAP contained on FAA form
documents is unnecessary. This
amendment provides the affected CFR
sections, and specifies the SIAPs and
Takeoff Minimums and ODPs with their
applicable effective dates. This
amendment also identifies the airport
and its location, the procedure and the
amendment number.
Availability and Summary of Material
Incorporated by Reference
The material incorporated by
reference is publicly available as listed
in the ADDRESSES section.
The material incorporated by
reference describes SIAPs, Takeoff
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]]>Agencies
[Federal Register Volume 88, Number 190 (Tuesday, October 3, 2023)]
[Rules and Regulations]
[Pages 67939-67942]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-21739]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-0940; Project Identifier AD-2022-01521-E;
Amendment 39-22552; AD 2023-19-02]
RIN 2120-AA64
Airworthiness Directives; Pratt & Whitney Division Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2018-21-
11, which applied to all Pratt & Whitney Division (PW) Model PW4074D,
PW4077D, PW4084D, PW4090, and PW4090-3 engines with a low-pressure
compressor (LPC) fan hub, part number (P/N) 51B821 or P/N 52B521,
installed. AD 2018-21-11 required performing repetitive eddy current
inspections (ECIs) and fluorescent penetrant inspections (FPIs) for
cracks in certain LPC fan hubs and removing LPC fan hubs from service
that fail any inspection. Since the FAA issued AD 2018-21-11, the FAA
determined that affected LPC fan hub assemblies can meet the published
certificated life limit without the need for the required repetitive
FPI inspections in AD 2018-21-11, and the repetitive ECI
[[Page 67940]]
inspections require shortened intervals. Based on a report of another
incident, the FAA determined that the unsafe condition is likely to
exist or develop on additional LPC fan hub assemblies and PW model
engines. This AD expands the applicability to include Model PW4074,
PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 engines with
any part number LPC fan hub assembly installed and requires performing
repetitive ECIs of the LPC fan hub assembly and, depending on the
results of the inspections, removing the LPC fan hub assembly from
service. The FAA is issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective November 7, 2023.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of November 7,
2023.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2023-0940; 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 address for Docket Operations is U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Material Incorporated by Reference:
For Pratt & Whitney Division service information
identified in this final rule, contact Pratt & Whitney Division, 400
Main Street, East Hartford, CT 06118; phone: (860) 565-0140; email:
[email protected]; website: connect.prattwhitney.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. It is
also available at regulations.gov under Docket No. FAA-2023-0940.
FOR FURTHER INFORMATION CONTACT: Carol Nguyen, Aviation Safety
Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone:
(781) 238-7655; email: [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2018-21-11, Amendment 39-19469 (83 FR
54663, October 31, 2018) (``AD 2018-21-11''). AD 2018-21-11 applied to
all PW Model PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and
PW4090-3 engines. The NPRM published in the Federal Register on May 23,
2023 (88 FR 32978), which proposed to supersede AD 2018-21-11. The NPRM
was prompted by an updated analysis by the engine manufacturer, which
indicated certain LPC fan hubs could crack before their published life
limit. However, the FAA determined that affected LPC fan hub assemblies
can meet the published certificated life limit without the need for the
required repetitive FPI inspections in AD 2018-21-11, and the
repetitive ECI inspections require shortened intervals. Additionally,
the FAA also received a report of an uncontained failure of the fan hub
assembly on an Engine Alliance GP7270 engine on an Air France flight.
Investigation of this uncontained failure revealed that, due to the
similarity of design and material processing for the LPC fan hub
assembly, the ECI inspections should be done on all LPC fan hub
assembly part numbers installed on PW Model PW4074, PW4074D, PW4077,
PW4077D, PW4084D, PW4090, and PW4090-3 engines. In the NPRM, the FAA
proposed to expand the applicability to include Model PW4074, PW4074D,
PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 engines with any P/N LPC
fan hub assembly installed. In the NPRM, the FAA also proposed to
require performing repetitive ECIs of the LPC fan hub assembly and,
depending on the results of the inspections, removing the LPC fan hub
assembly from service. The FAA is issuing this AD to prevent failure of
the LPC fan hub assembly. This condition, if not addressed, could
result in uncontained debris release, damage to the engine, and damage
to the aircraft.
Actions Since the NPRM Was Issued
Since the FAA published the NPRM, PW revised Alert Service Bulletin
(ASB) PW4G-112-A72-362, Revision No. 1, dated January 20, 2022, to ASB
PW4G-112-A72-362, Revision No. 2, dated August 2, 2023. This service
bulletin revision does not include the specification to remove LPC fan
hub assemblies with reportable indications from service. PW also added
instructions pertaining to reporting inspection results.
As a result, the FAA changed paragraph (g)(2) from ``If a
reportable or rejectable indication is found'' to ``If a rejectable
indication is found,'' added paragraph (j), Credit for Previous
Actions, to give full credit for anyone already accomplishing this
action before the effective date using Revision No. 1, and re-
designated subsequent paragraphs accordingly. This AD does not require
reporting inspection results.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from two commenters. Commenters included
The Boeing Company and The Air Line Pilots Association, International.
Both commenters support the NPRM without change.
Conclusion
The FAA reviewed the relevant data, considered the comments
received, and determined that air safety requires adopting the AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition on these products. Except for minor editorial changes, which
include updating the service information and removing the requirement
for removing LPC fan hub assemblies with reportable indications from
service, this AD is adopted as proposed in the NPRM.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Pratt & Whitney ASB PW4G-112-A72-362, Revision No.
2, dated August 2, 2023. This service information specifies procedures
for ECIs of the LPC fan hub assembly for cracks. This service
information also specifies reporting inspection results to PW.
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.
Costs of Compliance
The FAA estimates that this AD affects 65 engines installed on
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:
[[Page 67941]]
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Perform ECI of LPC fan hub assembly. 14 work-hours x $85 per $0 $1,190 $77,350
hour = $1,190.
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The FAA estimates the following costs to do any necessary
replacements that would be required based on the results of the
inspection. The agency has no way of determining the number of engines
that might need this replacement:
On-Condition Costs
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Action Labor cost Parts cost Cost per product
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Replace LPC fan hub assembly............... 65 work-hours x $85 per hour $1,194,000 $1,199,525
= $5,525.
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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
The FAA has determined that 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,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will 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 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:
0
a. Removing Airworthiness Directive 2018-21-11, Amendment 39-19469 (83
FR 54663, October 31, 2018); and
0
b. Adding the following new airworthiness directive:
2023-19-02 Pratt & Whitney Division: Amendment 39-22552; Docket No.
FAA-2023-0940; Project Identifier AD-2022-01521-E.
(a) Effective Date
This airworthiness directive (AD) is effective November 7, 2023.
(b) Affected ADs
This AD replaces AD 2018-21-11, Amendment 39-19469 (83 FR 54663,
October 31, 2018).
(c) Applicability
This AD applies to all Pratt & Whitney Division Model PW4074,
PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 engines.
(d) Subject
Joint Aircraft System Component (JASC) Code 7230, Turbine Engine
Compressor Section.
(e) Unsafe Condition
This AD was prompted by an updated analysis by the engine
manufacturer, which indicated certain low-pressure compressor (LPC)
fan hubs could crack before their published life limit. We are
issuing this AD to prevent failure of the LPC fan hub. The unsafe
condition, if not addressed, could result in uncontained hub
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 Actions
(1) Before accumulating 550 flight cycles (FC) after the
effective date of this AD, and thereafter at intervals not to exceed
550 FC since the last eddy current inspection (ECI), perform an ECI
of the LPC fan hub assembly, in accordance with the Accomplishment
Instructions, For Engines Installed on Aircraft, paragraph 2., or
For Engines Not Installed on Aircraft, paragraph 3; of Pratt &
Whitney Alert Service Bulletin (ASB) PW4G-112-A72-362, Revision No.
2, dated August 2, 2023 (ASB PW4G-112-A72-362, Revision 2).
(2) If a rejectable indication is found during the inspections
required by paragraph (g)(1) of this AD, before further flight,
replace the LPC fan hub assembly with a part eligible for
installation.
(h) Installation Prohibition
After the effective date of this AD, do not install an LPC fan
hub assembly on any engine, unless it is a part eligible for
installation as defined in paragraph (k) of this AD.
(i) No Reporting Requirement
This AD does not require reporting certain information to the
manufacturer as specified in ASB PW4G-112-A72-362, Revision 2.
(j) Credit for Previous Actions
Inspections and corrective actions on an engine, accomplished
before the effective date of this AD in accordance with the
instructions of Pratt & Whitney ASB PW4G-112-A72-362, Revision No.
1, dated January 20, 2022, are acceptable to comply with the
requirements of paragraph (g)(1) of this AD.
[[Page 67942]]
(k) Definitions
For the purposes of this AD, a ``part eligible for
installation'' is an affected LPC fan hub assembly that has been
inspected as required by paragraph (g)(1) of this AD and does not
have a rejectable or reportable indication or a LPC fan hub assembly
with zero cycles since new.
(l) Alternative Methods of Compliance (AMOCs)
(1) The Manager, AIR-520, Continued Operational Safety 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
(m)(1) of this AD.
(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.
(m) Additional Information
(1) For more information about this AD, contact Carol Nguyen,
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines,
WA 98198; phone: (781) 238-7655; email: [email protected].
(2) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (n)(3) and (4) of this AD.
(n) 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.
(i) Pratt & Whitney Alert Service Bulletin PW4G-112-A72-362,
Revision No. 2, dated August 2, 2023.
(ii) [Reserved]
(3) For service information identified in this AD, contact Pratt
& Whitney Division, 400 Main Street, East Hartford, CT 06118; phone:
(860) 565-0140; email: [email protected]; website:
connect.prattwhitney.com.
(4) 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 (817) 222-5110.
(5) 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: [email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on September 15, 2023.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-21739 Filed 10-2-23; 8:45 am]
BILLING CODE 4910-13-P
