[Federal Register Volume 86, Number 110 (Thursday, June 10, 2021)]
[Rules and Regulations]
[Pages 30770-30772]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-12137]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0187; Project Identifier AD-2020-01664-E;
Amendment 39-21583; AD 2021-11-21]
RIN 2120-AA64
Airworthiness Directives; CFM International, S.A. Turbofan
Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain CFM International, S.A. (CFM) LEAP-1A model turbofan engines.
This AD was prompted by a report of a manufacturing quality escape
found during an inspection of a high-pressure turbine (HPT) case. This
AD requires the removal from service of the affected HPT case. The FAA
is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective July 15, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of July 15,
2021.
ADDRESSES: For service information identified in this final rule,
contact CFM International, S.A., Aviation Operations Center, 1 Neumann
Way, M/D Room 285, Cincinnati, OH 45125; phone: (877) 432-3272; email:
[email protected]. You may view this service information at
the FAA, Airworthiness Products Section, Operational Safety Branch,
1200 District
[[Page 30771]]
Avenue, Burlington, MA 01803. For information on the availability of
this material at the FAA, call (781) 238-7759. It is also available at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2021-0187.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0187; 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.
FOR FURTHER INFORMATION CONTACT: Christopher McGuire, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington MA 01803;
phone: (781) 238-7120; fax: (781) 238-7199; email:
[email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain CFM LEAP-1A23,
LEAP-1A24, LEAP-1A24E1, LEAP-1A26, LEAP-1A26CJ, LEAP-1A26E1, LEAP-1A29,
LEAP-1A29CJ, LEAP-1A30, LEAP-1A32, LEAP-1A33, LEAP-1A33B2, and LEAP-
1A35A model turbofan engines. The NPRM published in the Federal
Register on March 23, 2021 (86 FR 15443). The NPRM was prompted by a
report of a manufacturing quality escape found during an inspection of
an HPT case. In the NPRM, the FAA proposed to require the removal from
service of the affected HPT case. The FAA is issuing this AD to address
the unsafe condition on these products.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the costs.
Conclusion
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. This AD is
adopted as proposed in the NPRM.
Related Service Information Under 1 CFR Part 51
The FAA reviewed CFM Service Bulletin (SB) LEAP-1A-72-00-0421-01A-
930A-D, Issue 001, dated October 22, 2020. This SB specifies procedures
for replacing the affected HPT cases. 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 8 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 and replace the HPT case....... 1 work-hour x $85 per $217,600 $217,685 $1,741,480
hour = $85.
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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
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 adding the following new airworthiness
directive:
2021-11-21 CFM International, S.A.: Amendment 39-21583; Docket No.
FAA-2021-0187; Project Identifier AD-2020-01664-E.
(a) Effective Date
This airworthiness directive (AD) is effective July 15, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to CFM International, S.A. (CFM) LEAP-1A23,
LEAP-1A24, LEAP-1A24E1, LEAP-1A26, LEAP-1A26CJ, LEAP-1A26E1, LEAP-
1A29, LEAP-1A29CJ, LEAP-1A30, LEAP-1A32, LEAP-1A33, LEAP-1A33B2, and
LEAP-1A35A model turbofan engines, with a high-pressure turbine
(HPT) case, part number (P/N) 2668M94G01, that
[[Page 30772]]
contains a stage 7 port, P/N 2614M30P01, with a port casting serial
number (S/N) listed in Table 1 in Planning Information, Paragraph
3.A., of CFM Service Bulletin (SB) LEAP-1A-72-00-0421-01A-930A-D,
Issue 001, dated October 22, 2020.
(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine
Section.
(e) Unsafe Condition
This AD was prompted by a report of a manufacturing quality
escape found during inspection of an HPT case. The FAA is issuing
this AD to prevent failure of the HPT case. The unsafe condition, if
not addressed, could result in failure of the HPT case, uncontained
rotor 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
Before the HPT case exceeds the cycles since new limit in Table
1, Planning Information, Paragraph 3.A., of CFM SB LEAP-1A-72-00-
0421-01A-930A-D, Issue 001, dated October 22, 2020, or during the
next piece part exposure, whichever occurs first after the effective
date of this AD, remove the affected HPT case from service and
replace with a part eligible for installation.
(h) Definitions
For the purpose of this AD:
(1) A part eligible for installation is an HPT case, P/N
2668M94G01, that contains a stage 7 port, P/N 2614M30P01, with an S/
N that is not listed in Table 1 in Planning Information, Paragraph
3.A., of CFM SB LEAP-1A-72-00-0421-01A-930A-D, Issue 001, dated
October 22, 2020.
(2) Piece-part exposure is when the HPT case is removed from the
engine and fully disassembled.
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, ECO Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the procedures found in 14 CFR
39.19. In accordance with 14 CFR 39.19, send your request to your
principal inspector or local Flight Standards District Office, as
appropriate. If sending information directly to the manager of the
certification office, send it to the attention of the person
identified in Related Information. You may email your request to:
[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.
(j) Related Information
For more information about this AD, contact Christopher McGuire,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7120; fax: (781) 238-7199;
email: [email protected].
(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) CFM Service Bulletin LEAP-1A-72-00-0421-01A-930A-D, Issue
001, dated October 22, 2020.
(ii) [Reserved]
(3) For CFM service information identified in this AD, contact
CFM International, S.A., Aviation Operations Center, 1 Neumann Way,
M/D Room 285, Cincinnati, OH 45125; phone: (877) 432-3272; email:
[email protected].
(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 (781) 238-7759.
(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: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on May 21, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-12137 Filed 6-9-21; 8:45 am]
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