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2024-01-03 GE AVIATION CZECH S.R.O. (TYPE CERTIFICATE PREVIOUSLY HELD BY WALTER ENGINES A.S., WALTER A.S., AND MOTORLET A.S.): Amendment 39-22654; Docket No. FAA-2023-1811; Project Identifier MCAI-2023-00146-E.
(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective February 27, 2024.

(b) AFFECTED ADS

    This AD replaces AD 2023-01-07,Amendment 39-22301 (88 FR 2501, January
    17, 2023; corrected February 3, 2023 (88 FR 7355);  corrected February
    16, 2023 (88 FR 10013)).

(c) APPLICABILITY

    This  AD  applies  to GE Aviation Czech s.r.o.  (type certificate pre-
    viously held by WALTER Engines a.s.,  Walter a.s.,  and MOTORLET a.s.)
    Model H75-100, H75-200, H80, H80-100, H80-200,  H85-100,  and  H85-200
    engines.

(d) SUBJECT

    Joint Aircraft System Component (JASC) Code 7200, Engine (Turbine/Tur-
    boprop).

(e) UNSAFE CONDITION

    This AD was  prompted by the  manufacturer revising the  airworthiness
    limitations section  (ALS) of  the existing  engine maintenance manual
    (EMM) to introduce new and more restrictive airworthiness  limitations
    and associated  thresholds and  intervals for  life-limited parts. The
    FAA is issuing this  AD to prevent 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 al-
    ready done.

(g) REQUIRED ACTIONS

(1) 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 2023-0021, dated
    January 23, 2023 (EASA AD 2023-0021).

(2) The action required by paragraph (g)(1) of this AD may be performed by
    the owner / operator (pilot) holding at least a private pilot certifi-
    cate and must be entered into the aircraft records  showing compliance
    with this AD  in  accordance  with 14 CFR 43.9(a) and 91.417(a)(2)(v).
    The record must be maintained as required by 14 CFR 91.417, 121.380 or
    135.439.

(h) EXCEPTIONS TO EASA AD 2023-0021

(1) Where EASA AD 2023-0021 defines the AMP as "the approved Aircraft Main
    -tenance Programme containing the tasks  on  the  basis  of  which the
    scheduled maintenance is conducted to ensure the continuing airworthi-
    ness of each operated engine,"  for  this AD,  replace that text with,
    "the aircraft maintenance program containing the tasks on the basis of
    which the scheduled maintenance is conducted  to ensure the continuing
    airworthiness of each operated airplane."

(2) Where EASA AD 2023-0021  defines the ALS as "the Airworthiness Limita-
    tions Section of GEAC EMM No. 0983402 Revision 25,  dated November 21,
    2022," for this AD, replace that text with, "the airworthiness limita-
    tions section of GEAC EMM No. 0983402 Revision 26,  dated  February 1,
    2023." The ALS in Revision 26 of the EMM is unchanged from Revision 25
    of the EMM.

(3) Where EASA AD 2023-0021 refers to its effective date, this AD requires
    using the effective date of this AD.

(4) Where paragraph (3)  of  EASA  AD 2023-0021  specifies  revising  "the
    approved AMP within 12 months after the effective date of EASA AD 2023
    -0021," replace that text with,  "the ALS of the existing approved en-
    gine maintenance or inspection program, as applicable,  within 90 days
    after the effective date of this AD."

(5) This AD does not require compliance with paragraphs (1), (2), (4), and
    (5) of EASA AD 2023-0021.

(6) This AD does not adopt the Remarks paragraph of EASA AD 2023-0021.

(i) PROVISIONS FOR ALTERNATIVE ACTIONS AND INTERVALS

    After performing the actions required by paragraph (g) of this AD,  no
    alternative actions and associated thresholds and intervals, including
    life limits,  are allowed unless they are approved as specified in the
    provisions of the "Ref. Publications" section of EASA AD 2023-0021.

(j) 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 (k) of this AD and email to ANE-AD-AMOC
    @faa.gov.

(2) Before using any approved AMOC,  notify your appropriate principal in-
    spector,  or  lacking a principal inspector,  the manager of the local
    flight standards district office/certificate holding district office.

(k) 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: barbara.caufield@faa.gov.

(l) 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 the AD specifies otherwise.

(i) European Union Aviation Safety Agency (EASA) AD 2023-0021, dated Janu-
    ary 23, 2023.

(ii) [Reserved]

(3) For EASA AD 2023-0021,  contact  EASA,  Konrad-Adenauer-Ufer 3,  50668
    Cologne, Germany;  phone: +49 221 8999 000; email: ADs@easa.europa.eu;
    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 Admin-
    istration (NARA). For information on the availability of this material
    at NARA,  visit www.archives.gov/federal-register/cfr/ibr-locationsore
    mailfr.inspection@nara.gov.

Issued on January 17, 2024. Victor Wicklund, Deputy Director, Compliance &
Airworthiness Division, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT:  Barbara Caufield,  Aviation Safety Engi-
neer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone (781)
238-7146; email: barbara.caufield@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2023-1811; Project Identifier MCAI-2023-00146-E;
Amendment 39-22654; AD 2024-01-03]
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.

-----------------------------------------------------------------------

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2023-01-
07 for all GE Aviation Czech s.r.o. (GEAC) (type certificate previously
held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Model H75-
100, H75-200, H80, H80-100, H80-200, H85-100, and H85-200 engines. AD
2023-01-07 required revising the airworthiness limitations section
(ALS) of the existing engine maintenance manual (EMM) and the
operator's existing approved maintenance or inspection program, as
applicable, to incorporate updated coefficients and recalculate the
cycles accumulated on critical parts. Since the FAA issued AD 2023-01-
07, the manufacturer revised the ALS of the EMM to introduce new and
more restrictive airworthiness limitations and associated thresholds
and intervals for life-limited parts, which prompted this AD action.
This AD requires revising the ALS of the existing EMM and the
operator's existing approved engine maintenance or inspection program,
as applicable, to incorporate new and more restrictive instructions and
associated thresholds and intervals for life-limited parts, as
specified in a European Union Aviation Safety Agency (EASA) AD, which
is incorporated by reference (IBR). The FAA is issuing this AD to
address the unsafe condition on these products.

DATES: This AD is effective February 27, 2024.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of February 27,
2024.

ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2023-1811; 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:
For service information identified in this final rule,
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone:
+49 221 8999 000; email: ADs@easa.europa.eu; website: easa.europa.eu.
You may find this material on the EASA website at ad.easa.europa.eu.
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-2023-1811.

FOR FURTHER INFORMATION CONTACT
: Barbara Caufield, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: (781) 238-7146; email: barbara.caufield@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2023-01-07, Amendment 39-22301 (88 FR 2501,
January 17, 2023; corrected February 3, 2023 (88 FR 7355); corrected
February 16, 2023 (88 FR 10013)) (AD 2023-01-07). AD 2023-01-07 applied
to GEAC Model H75-100, H75-200, H80, H80-100, H80-200, H85-100, and
H85-200 engines. AD 2023-01-07 required revising the ALS of the
existing EMM and the operator's existing approved maintenance or
inspection program, as applicable, to incorporate the updated
coefficients and recalculate the cycles accumulated on critical parts.
The FAA issued AD 2023-01-07 to prevent failure of the engine.
The NPRM published in the Federal Register on September 6, 2023 (88
FR 60896). The NPRM was prompted by EASA AD 2023-0021, dated January
23, 2023 (EASA AD 2023-0021) (also referred to as the MCAI), issued by
EASA, which is Technical Agent for the Member States of the European
Union. EASA AD 2023-0021 supersedes EASA AD 2022-0008. The MCAI states
that the manufacturer revised the ALS to introduce new and more
restrictive instructions and associated thresholds and intervals for
life-limited parts. The MCAI also states that GEAC published an Alert
Service Bulletin, ASB-H75-72-10-00-0062, ASB-H80-72-10-00-0107, ASB-
H85-72-10-00-0051, ASB-M601F-72-10-00-0070, ASB-M601E-72-10-00-0120,
ASB-M601D-72-10-00-0087 and ASB-M601Z-72-10-00-0069; Revision 1, dated
January 20, 2023, published as a single document, which provides
instructions to determine the accumulated life of certain propeller
shafts.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2023-1811.
In the NPRM, the FAA proposed to require accomplishing the actions
specified in the MCAI described previously, except for any differences
identified as exceptions in the regulatory text of the proposed AD.

Discussion of Final Airworthiness Directive


Comments

The FAA received no comments on the NPRM or on the determination of
the costs.

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 2023-0021, which specifies procedures for
operators to revise the ALS of the existing EMM and the operator's
existing approved engine maintenance or inspection program, as
applicable, to incorporate new and more restrictive instructions and
associated thresholds and intervals for life-limited parts, as
applicable to each engine model.
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 33 engines installed on
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:

Estimated Costs

Action
Labor cost
Parts cost
Cost per product
Cost on U.S. operators
Revise the ALS 1 work-hours x $85 per hour = $85
$0
$85
$2,805

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

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]


2. The FAA amends Sec. 39.13 by:

a. Removing Airworthiness Directive 2023-01-07, Amendment 39-22301 (88
FR 2501, January 17, 2023; corrected February 3, 2023 (88 FR 7355);
corrected February 16, 2023 (88 FR 10013)); and

b. Adding the following new airworthiness directive: