Rule2024-14939
Airworthiness Directives; CFE Company Engines
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
July 9, 2024
Effective
August 13, 2024
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain CFE Company (CFE) Model CFE738-1-1B engines. This AD was prompted by a manufacturer investigation that revealed certain high- pressure turbine (HPT) stage 1 and stage 2 disks were manufactured from powder metal material suspected to contain iron inclusion. This AD requires replacement of affected HPT stage 1 and stage 2 disks with parts eligible for installation. 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 131 (Tuesday, July 9, 2024)</title>
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[Federal Register Volume 89, Number 131 (Tuesday, July 9, 2024)]
[Rules and Regulations]
[Pages 56193-56195]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-14939]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-0461; Project Identifier AD-2023-00994-E;
Amendment 39-22767; AD 2024-12-03]
RIN 2120-AA64
Airworthiness Directives; CFE Company 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 CFE Company (CFE) Model CFE738-1-1B engines. This AD was
prompted by a manufacturer investigation that revealed certain high-
pressure turbine (HPT) stage 1 and stage 2 disks were manufactured from
powder metal material suspected to contain iron inclusion. This AD
requires replacement of affected HPT stage 1 and stage 2 disks with
parts eligible for installation. The FAA is issuing this AD to address
the unsafe condition on these products.
DATES: This AD is effective August 13, 2024.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of August 13,
2024.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2024-0461; 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:
<bullet> For CFE material, contact CFE Company, 111 S 34th Street,
Phoenix, AZ 85034; phone: (800) 601-3099; email:
<a href="/cdn-cgi/l/email-protection#f1b2b7b4c6c2c9b5908590b2949f859483b1999e9f948886949d9ddf929e9c"><span class="__cf_email__" data-cfemail="7a393c3f4d49423e1b0e1b391f140e1f083a1215141f030d1f161654191517">[email protected]</span></a>; website: <a href="http://aerospace.honeywell.com">aerospace.honeywell.com</a>.
<bullet> You may view this material at the FAA, Airworthiness
Products Section,
[[Page 56194]]
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-2024-0461.
FOR FURTHER INFORMATION CONTACT: Alexei Marqueen, Aviation Safety
Engineer, FAA, FAA, 2200 South 216th Street, Des Moines, WA 98198;
phone: (781) 238-7178; email: <a href="/cdn-cgi/l/email-protection#51303d342934387f257f3c3023202434343f113730307f363e27"><span class="__cf_email__" data-cfemail="a8c9c4cdd0cdc186dc86c5c9dad9ddcdcdc6e8cec9c986cfc7de">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would that apply to certain CFE Model
CFE738-1-1B engines with HPT stage 1 and HPT stage 2 disks installed.
The NPRM published in the Federal Register on March 8, 2024 (89 FR
16710). The NPRM was prompted by a manufacturer investigation that
revealed certain HPT stage 1 and HPT stage 2 disks, installed on
certain CFE738-1-1B model engines, were manufactured from powder metal
material suspected to contain iron inclusion. Further investigation by
the manufacturer determined that the iron inclusion is attributed to
deficiencies in the manufacturing process and may cause reduced
material properties and a lower fatigue life capability, which may
result in structural failure. The manufacturer also informed the FAA
that additional risk assessments determined that there were no failed
events associated with the discovery of this iron inclusion material,
however concluded that replacement of the affected HPT stage 1 and HPT
stage 2 disks is necessary. In the NPRM, the FAA proposed to require
replacement of affected HPT stage 1 and HPT stage 2 disks with parts
eligible for installation. 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. Except for
minor editorial changes, this AD is adopted as proposed in the NPRM.
Related Material Under 1 CFR Part 51
The FAA reviewed CFE Service Bulletin CFE738-72-A8082, dated July
4, 2023, which specifies the affected part and serial numbers of the
HPT stage 1 and stage 2 disks and specifies replacement instructions
for the affected parts. This material is reasonably available because
the interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD affects 29 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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Replace HPT stage 1 disk (25 engines). 8 work-hours x $85 per $78,797 $79,477 $1,986,925
hour = $680.
Replace HPT stage 2 disk (4 engines).. 8 work-hours x $85 per 56,268 56,948 227,792
hour = $680.
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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:
2024-12-03 CFE Company: Amendment 39-22767; Docket No. FAA-2024-
0461; Project Identifier AD-2023-00994-E.
(a) Effective Date
This airworthiness directive (AD) is effective August 13, 2024.
(b) Affected ADs
None.
(c) Applicability
This AD applies to CFE Company (CFE) Model CFE738-1-1B engines
with an installed high-pressure turbine (HPT) stage 1 disk or HPT
stage 2 disk with a part number (P/N) and serial number (S/N)
identified in Section 1. Planning Information, paragraph E.
Compliance, Tables 2 and 3 of CFE Service
[[Page 56195]]
Bulletin (SB) CFE738-72-A8082, dated July 4, 2023 (CFE738-72-A8082).
(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine
Section.
(e) Unsafe Condition
This AD was prompted by a manufacturer investigation that
revealed certain HPT stage 1 disks and HPT stage 2 disks were
manufactured from powder metal material suspected to contain iron
inclusion. The FAA is issuing this AD to prevent premature fracture
and consequent uncontained failure. The unsafe condition, if not
addressed, could result in uncontained debris 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
At the applicable times specified in paragraphs (g)(1) and (2)
of this AD, remove each affected HPT stage 1 disk and HPT stage 2
disk from service and replace with a part eligible for installation,
in accordance with steps (1) through (9) in paragraph B. of the
Accomplishment Instructions of CFE738-72-A8082.
(1) For affected HPT stage 1 disks, at the next piece-part
exposure or before exceeding 2,450 cycles since new (CSN), whichever
occurs first.
(2) For affected HPT stage 2 disks, at the next piece-part
exposure or before exceeding 2,930 CSN, whichever occurs first.
(h) Definition
For the purpose of this AD:
(1) A ``part eligible for installation'' is any HPT stage 1 disk
or HPT stage 2 disk with a P/N and S/N that is not identified in
Section 1. Planning Information, paragraph E. Compliance, Tables 2
and 3 of CFE738-72-A8082.
(2) ``Piece-part exposure'' is when the affected part is removed
from the engine.
(i) 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 AIR-520 Continued
Operational Safety 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#99d8d7dcb4d8ddb4d8d4d6dad9fff8f8b7fef6ef"><span class="__cf_email__" data-cfemail="e1a0afa4cca0a5cca0acaea2a1878080cf868e97">[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) Related Information
For more information about this AD, contact Alexei Marqueen,
Aviation Safety Engineer, FAA, 2200 South 216th Steet, Des Moines,
WA 98198; phone: (781) 238-7178; email: <a href="/cdn-cgi/l/email-protection#bfded3dac7dad691cb91d2decdcecadadad1ffd9dede91d8d0c9"><span class="__cf_email__" data-cfemail="7f1e131a071a16510b51121e0d0e0a1a1a113f191e1e51181009">[email protected]</span></a>.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the material listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as applicable to do the actions
required by this AD, unless the AD specifies otherwise.
(i) CFE Service Bulletin CFE738-72-A8082, dated July 4, 2023.
(ii) [Reserved]
(3) For CFE material, contact CFE Company, 111 S 34th Street,
Phoenix, AZ 85034; phone: (800) 601-3099; email:
<a href="/cdn-cgi/l/email-protection#b5f6f3f082868df1d4c1d4f6d0dbc1d0c7f5dddadbd0ccc2d0d9d99bd6dad8"><span class="__cf_email__" data-cfemail="3e7d787b090d067a5f4a5f7d5b504a5b4c7e5651505b47495b5252105d5153">[email protected]</span></a>; website: <a href="http://aerospace.honeywell.com">aerospace.honeywell.com</a>.
(4) You may view this material 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.
(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#81e7f3afe8eff2f1e4e2f5e8eeefc1efe0f3e0afe6eef7"><span class="__cf_email__" data-cfemail="3e584c1057504d4e5b5d4a5751507e505f4c5f10595148">[email protected]</span></a>.
Issued on June 11, 2024.
Suzanne Masterson,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2024-14939 Filed 7-8-24; 8:45 am]
BILLING CODE 4910-13-P
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