Rule2024-03562
Airworthiness Directives; GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Engines
Primary source
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Published
February 22, 2024
Effective
March 28, 2024
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is superseding Airworthiness Directive (AD) 2021-13-07 for all GE Aviation Czech s.r.o. (GEAC) (type certificate previously held by WALTER Engine a.s., Walter a.s., and MOTORLET a.s.) Model M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F engines. AD 2021-13-07 required recalculating the life of critical parts and, depending on the results of the recalculation, replacing those critical parts. AD 2021-13-07 also required replacing a certain compressor case. Since the FAA issued AD 2021-13-07, the manufacturer published the airworthiness limitations section (ALS) of the existing engine maintenance manual (EMM), which includes the calculations for the life of critical parts addressed by AD 2021-13-07 and prompted this AD. This AD continues to require the replacement of a certain centrifugal compressor case. This AD also includes an additional part number as an option for the replacement, and limits the applicability of this AD, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 89 Issue 36 (Thursday, February 22, 2024)</title>
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[Federal Register Volume 89, Number 36 (Thursday, February 22, 2024)]
[Rules and Regulations]
[Pages 13265-13267]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-03562]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-2002; Project Identifier MCAI-2023-00176-E;
Amendment 39-22668; AD 2024-02-04]
RIN 2120-AA64
Airworthiness Directives; GE Aviation Czech s.r.o. (Type
Certificate Previously Held by WALTER Engines a.s., Walter a.s., and
MOTORLET a.s.) Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2021-13-07
for all GE Aviation Czech s.r.o. (GEAC) (type certificate previously
held by WALTER Engine a.s., Walter a.s., and MOTORLET a.s.) Model
M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F
engines. AD 2021-13-07 required recalculating the life of critical
parts and, depending on the results of the recalculation, replacing
those critical parts. AD 2021-13-07 also required replacing a certain
compressor case. Since the FAA issued AD 2021-13-07, the manufacturer
published the airworthiness limitations section (ALS) of the existing
engine maintenance manual (EMM), which includes the calculations for
the life of critical parts addressed by AD 2021-13-07 and prompted this
AD. This AD continues to require the replacement of a certain
centrifugal compressor case. This AD also includes an additional part
number as an option for the replacement, and limits the applicability
of this AD, as specified in a European Union Aviation Safety Agency
(EASA) AD, which is incorporated by reference. The FAA is issuing this
AD to address the unsafe condition on these products.
DATES: This AD is effective March 28, 2024.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of March 28,
2024.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-2002; 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, the mandatory continuing airworthiness
information (MCAI), 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:
<bullet> For service information identified in this final rule,
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone:
+49 221 8999 000; email: <a href="/cdn-cgi/l/email-protection#f6b7b285b693978597d8938384998697d89383"><span class="__cf_email__" data-cfemail="67262314270206140649021215081706490212">[email protected]</span></a>; website: easa.europa.eu.
You may find this material on the EASA website at ad.easa.europa.eu.
<bullet> 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 <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2023-2002.
FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: (781) 238-7146; email: <a href="/cdn-cgi/l/email-protection#bedcdfccdcdfccdf90dddfcbd8d7dbd2dafed8dfdf90d9d1c8"><span class="__cf_email__" data-cfemail="a0c2c1d2c2c1d2c18ec3c1d5c6c9c5ccc4e0c6c1c18ec7cfd6">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2021-13-07, Amendment 39-21612 (86 FR
31601, June 15, 2021), (AD 2021-13-07). AD 2021-13-07 applied to all
GEAC Model M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and
M601F engines. AD 2021-13-07 required recalculating the life of
critical parts and, depending on the results of the recalculation,
replacing critical parts. AD 2021-13-07 also requires replacing a
certain compressor case. The FAA issued AD 2021-13-07 to prevent the
failure of the engine.
The NPRM published in the Federal Register on October 27, 2023 (88
FR 73778). The NPRM was prompted by EASA AD 2021-0125R1, dated January
30, 2023 (EASA AD 2021-0125R1) (also referred to as the MCAI), issued
by EASA, which is the Technical Agent for the Member States of the
European Union. The MCAI states that the manufacturer published the
ALS, which incorporates certain requirements addressed by EASA
Emergency AD 2021-0125-E, and that EASA published EASA AD 2023-0020,
dated January 23, 2023 (EASA AD 2023-0020), which requires
accomplishment of the actions specified in the ALS. The MCAI limits the
applicability to M601E engines with a centrifugal compressor case
having part number M601-154.61 installed and removes the requirements
that have been incorporated in the ALS.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-2002.
In the NPRM, the FAA proposed to continue to require the
replacement of a certain centrifugal compressor case. In the NPRM, the
FAA also proposed to require accomplishing the actions specified in the
MCAI.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the costs.
[[Page 13266]]
Conclusion
These products have been approved by the aviation authority of
another country and are approved for operation in the United States.
Pursuant to the FAA's bilateral agreement with this State of Design
Authority, it has notified the FAA of the unsafe condition described in
the MCAI referenced above. The FAA reviewed the relevant data and
determined that air safety requires adopting this AD as proposed.
Accordingly, the FAA is issuing this AD to address the unsafe condition
on these products. Except for minor editorial changes, this AD is
adopted as proposed in the NPRM.
Related Service Information Under 1 CFR Part 51
The FAA reviewed EASA AD 2021-0125R1, which specifies procedures
for replacing the centrifugal compressor case, limits the applicability
to certain M601E engines, and removes the requirements that have been
incorporated in the ALS.
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.
Differences Between This AD and the MCAI
The MCAI applies to GEAC Model M601E engines, and this AD does not
because they do not have an FAA type certificate.
Costs of Compliance
The FAA estimates that this AD affects 13 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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Recalculate centrifugal compressor 1 work-hour x $85 per $0 $85 $1,105
case equivalent flight cycles. hour = $85.
Replace centrifugal compressor case... 10 work-hours x $85 per 65,000 65,850 856,050
hour = $850.
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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 2021-13-07, Amendment 39-21612 (86
FR 31601, June 15, 2021); and
0
b. Adding the following new airworthiness directive:
2024-02-04 GE Aviation Czech s.r.o. (Type Certificate Previously
held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.):
Amendment 39-22668; Docket No. FAA-2023-2002; Project Identifier
MCAI-2023-00176-E.
(a) Effective Date
This airworthiness directive (AD) is effective March 28, 2024.
(b) Affected ADs
This AD replaces AD 2021-13-07, Amendment 39-21612 (86 FR 31601,
June 15, 2021) (AD 2021-13-07).
(c) Applicability
This AD applies to GE Aviation Czech s.r.o. (type certificate
previously held by WALTER Engines a.s., Walter a.s., and MOTORLET
a.s.) Model M601E-11, M601E-11A, M601E-11AS, and M601E-11S engines
with a centrifugal compressor case having part number (P/N) M601-
154.61 installed.
(d) Subject
Joint Aircraft System Component (JASC) Code 7230, Turbine Engine
Compressor Section.
(e) Unsafe Condition
This AD was prompted by the manufacturer determining that the
life limit of a compressor case having P/N M601-154.61 is not listed
in the airworthiness limitations section of the existing engine
maintenance manual. The FAA is issuing this AD to prevent the
failure of the engine. The unsafe condition, if not addressed, could
result in uncontained release of a critical part, 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
Except as specified in paragraph (h) of this AD: Perform all
required actions within the compliance times specified in, and in
accordance with, European Union Aviation Safety Agency (EASA) AD
2021-0125R1, dated January 30, 2023 (EASA AD 2021-0125R1).
[[Page 13267]]
(h) Exceptions to EASA AD 2021-0125R1
(1) Where EASA AD 2021-0125R1 refers to May 11, 2021 (the
effective date of EASA Emergency AD 2021-0125-E, dated May 7, 2021),
this AD requires using June 30, 2021 (the effective date of AD 2021-
13-07).
(2) This AD does not adopt the Remarks paragraph of EASA AD
2021-0125R1.
(i) Alternative Methods of Compliance (AMOCs)
(1) 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 local Flight
Standards District Office, as appropriate. If sending information
directly to the manager of the International Validation Branch, send
it to the attention of the person identified in paragraph (j) of
this AD and email to <a href="/cdn-cgi/l/email-protection#c1808f84ec8085ec808c8e8281a7a0a0efa6aeb7"><span class="__cf_email__" data-cfemail="8ccdc2c9a1cdc8a1cdc1c3cfcceaededa2ebe3fa">[email protected]</span></a>.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
(j) Additional Information
For more information about this AD, contact Barbara Caufield,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; phone: (781) 238-7146; email:
<a href="/cdn-cgi/l/email-protection#9ffdfeedfdfeedfeb1fcfeeaf9f6faf3fbdff9fefeb1f8f0e9"><span class="__cf_email__" data-cfemail="a0c2c1d2c2c1d2c18ec3c1d5c6c9c5ccc4e0c6c1c18ec7cfd6">[email protected]</span></a>.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless the AD specifies otherwise.
(i) European Union Aviation Safety Agency (EASA) AD 2021-0125R1,
dated January 30, 2023.
(ii) [Reserved]
(3) For EASA AD 2021-0125R1, contact EASA, Konrad-Adenauer-Ufer
3, 50668 Cologne, Germany; phone: +49 221 8999 000; email:
<a href="/cdn-cgi/l/email-protection#8ecfcafdceebeffdefa0ebfbfce1feefa0ebfb"><span class="__cf_email__" data-cfemail="c38287b083a6a2b0a2eda6b6b1acb3a2eda6b6">[email protected]</span></a>; website: easa.europa.eu. You may find this EASA
AD on the EASA website at ad.easa.europa.eu.
(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 material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit <a href="http://www.archives.gov/federal-register/cfr/ibr-locations">www.archives.gov/federal-register/cfr/ibr-locations</a> or email <a href="/cdn-cgi/l/email-protection#ccaabee2a5a2bfbca9afb8a5a3a28ca2adbeade2aba3ba"><span class="__cf_email__" data-cfemail="dbbda9f5b2b5a8abbeb8afb2b4b59bb5baa9baf5bcb4ad">[email protected]</span></a>.
Issued on January 29, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2024-03562 Filed 2-21-24; 8:45 am]
BILLING CODE 4910-13-P
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