Proposed Rule2022-20857
Airworthiness Directives; GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Turboprop Engines
Primary source
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Published
September 27, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain GE Aviation Czech s.r.o. (GEAC) M601D-11, M601E-11, M601E- 11A, M601E-11AS, M601E-11S, M601F, H75-100, H75-200, H80, H80-100, H80- 200, H85-100, and H85-200 model turboprop engines. This proposed AD was prompted by reports of cracks in dilution tube weld areas of the combustion chamber outer liner. This proposed AD would require initial and repetitive borescope inspections (BSIs) of the dilution tube weld areas of the combustion chamber outer liner and, depending on the results of the inspections, replacement of the combustion chamber outer liner with a part eligible for installation. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 87 Issue 186 (Tuesday, September 27, 2022)</title>
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[Federal Register Volume 87, Number 186 (Tuesday, September 27, 2022)]
[Proposed Rules]
[Pages 58466-58469]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-20857]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-1239; Project Identifier MCAI-2022-00301-E]
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.) Turboprop Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain GE Aviation Czech s.r.o. (GEAC) M601D-11, M601E-11, M601E-
11A, M601E-11AS, M601E-11S, M601F, H75-100, H75-200, H80, H80-100, H80-
200, H85-100, and H85-200 model turboprop engines. This proposed AD was
prompted by reports of cracks in dilution tube weld areas of the
combustion chamber outer liner. This proposed AD would require initial
and repetitive borescope inspections (BSIs) of the dilution tube weld
areas of the combustion chamber outer liner and, depending on the
results of the inspections, replacement of the combustion chamber outer
liner with a part eligible for installation. The FAA is proposing this
AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this NPRM by November 14, 2022.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
<bullet> Federal eRulemaking Portal: Go to <a href="http://regulations.gov">regulations.gov</a>. Follow
the instructions for submitting comments.
<bullet> Fax: (202) 493-2251.
<bullet> Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
<bullet> Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2022-1239; 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 NPRM, the mandatory continuing airworthiness
information (MCAI), any comments received, and other information. The
street address for Docket Operations is listed above.
Material Incorporated by Reference:
<bullet> For GEAC service information identified in this NPRM,
contact GE Aviation Czech s.r.o., Beranov[yacute]ch 65, 199 02 Praha 9,
Let[ncaron]any, Czech Republic; phone: +420 222 538 111.
<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.
FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7146; email: <a href="/cdn-cgi/l/email-protection#4a282b38282b382b64292b3f2c232f262e0a2c2b2b642d253c"><span class="__cf_email__" data-cfemail="761417041417041758151703101f131a123610171758111900">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2022-1239; Project Identifier
MCAI-2022-00301-E'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
<a href="http://regulations.gov">regulations.gov</a>, including any personal information you provide. The
agency will also post a report summarizing each substantive verbal
contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI
[[Page 58467]]
as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Barbara Caufield, Aviation Safety Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
The European Union Aviation Safety Agency (EASA), which is the
Technical Agent for the Member States of the European Union, has issued
EASA AD 2022-0034, dated March 4, 2022 (referred to after this as ``the
MCAI''), to correct an unsafe condition on M601D, M601D-1, M601D-2,
M601D-11, M601D-11NZ, M601E, M601E-11, M601E-11A, M601E-11AS, M601E-
11S, M601E-21, M601F, M601FS, M601Z, H75-100, H75-200, H80, H80-100,
H80-200, H85-100, and H85-200 engines, all serial numbers. The MCAI
states that occurrences of cracks in dilution tube weld areas of the
combustion chamber outer liner have been reported. These cracks can
lead to crack propagation, possibly resulting in part separation, loss
of engine power, and reduced control of the aircraft.
As a result of this unsafe condition, the MCAI specifies initial
and repetitive BSIs of the dilution tube weld areas of the combustion
chamber outer liner and, depending on the outcome of the inspections,
corrective action in accordance with the service information.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2022-1239.
Related Service Information Under 1 CFR Part 51
The FAA reviewed GEAC Alert Service Bulletin (ASB) ASB-H75-72-40-
00-0056 [01], ASB-M601E-72-40-00-0113 [01], ASB-H80-72-40-00-0099 [01],
ASB-M601D-72-40-00-0081[01], ASB-M601F-72-40-00-0064[01], ASB-M601Z-72-
40-00-0063 [01], and ASB-H85-72-40-00-0045 [01], (single document;
formatted as service bulletin identifier [revision number]), dated
February 16, 2022. This service information specifies procedures for
BSIs of the dilution tube weld areas of the combustion chamber outer
liner and replacement of the combustion chamber outer liner.
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.
FAA's Determination
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 and service information described above. The FAA is issuing
this NPRM after determining that the unsafe condition described
previously is likely to exist or develop on other products of the same
type design.
Proposed AD Requirements in This NPRM
This proposed AD would require initial and repetitive BSIs of the
dilution tube weld areas of the combustion chamber outer liner and,
depending on the results of the inspections, corrective action in
accordance with the service information.
Differences Between This Proposed AD and the MCAI
EASA AD 2022-0034 applies to GEAC M601D, M601D-1, M601D-2, M601D-
11, M601D-11NZ, M601E, M601E-11, M601E-11A, M601E-11AS, M601E-11S,
M601E-21, M601F, M601FS, M601Z, H75-100, H75-200, H80, H80-100, H80-
200, H85-100, and H85-200 model turboprop engines, all serial numbers.
GEAC M601D, M601D-1, M601D-2, M601D-11NZ, M601E, M601E-21, M601FS, and
M601Z model turboprop engines are not certificated by the FAA and are
not included on the U.S. type certificate data sheet; this proposed AD
therefore does not include those engines in the applicability.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 33 engines installed on airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed
AD:
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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BSI of combustion chamber outer liner. 2.5 work-hours x $85 per $0 $212.50 $7,012.50
hour = $212.50.
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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
proposed inspection. The agency has no way of determining the number of
aircraft that might need these replacements:
On-Condition Costs
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Cost per
Action Labor cost Parts cost product
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On-wing replacement of combustion chamber 64 work-hours x $85 per hour = *$74,909 $80,349
outer liner. $5,440.
In-shop replacement of combustion chamber 56 work-hours x $85 per hour = 74,909 79,669
outer liner. $4,760.
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The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some of the costs of this
proposed AD may be covered under warranty, thereby reducing the cost
impact on affected operators.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I,
[[Page 58468]]
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 determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would 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 Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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:
GE Aviation Czech s.r.o (Type Certificate previously held by WALTER
Engines a.s., Walter a.s., and MOTORLET a.s.): Docket No. FAA-2022-
1239; Project Identifier MCAI-2022-00301-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by November 14, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to GE Aviation Czech s.r.o. (GEAC) M601D-11,
M601E-11, M601E-11A, M601E-11AS, M601E-11S, M601F, H75-100, H75-200,
H80, H80-100, H80-200, H85-100, and H85-200 model turboprop engines
installed on single-engine airplanes, with an installed combustion
chamber outer liner having part numbers (P/Ns) M601-229.3, M601-
229.3A, M601-229.3B, M601-229.31A, or M601-229.31B.
(d) Subject
Joint Aircraft System Component (JASC) Code 7240, Turbine Engine
Combustion Section.
(e) Unsafe Condition
This AD was prompted by reports of cracks in dilution tube weld
areas of the combustion chamber outer liner. The FAA is issuing this
AD to prevent failure of the combustion chamber outer liner. The
unsafe condition, if not addressed, could result in uncontained
release of the combustion chamber outer liner, loss of engine power,
and reduced control of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) At the next 300-hour (Type 3) engine inspection, or within
25 flight hours (FHs) after the effective date of this AD, whichever
occurs later, and thereafter at intervals not to exceed 300 FHs,
perform a borescope inspection (BSI) of the dilution tube weld areas
of the combustion chamber outer liner in accordance with the
Accomplishment Instructions, paragraph 2.1 of GEAC Alert Service
Bulletin (ASB) ASB-H75-72-40-00-0056 [01], ASB-M601E-72-40-00-0113
[01], ASB-H80-72-40-00-0099 [01], ASB-M601D-72-40-00-0081[01], ASB-
M601F-72-40-00-0064[01], ASB-M601Z-72-40-00-0063 [01], and ASB-H85-
72-40-00-0045 [01] (single document; formatted as service bulletin
identifier [revision number]), dated February 16, 2022 (the ASB).
(2) If a crack is detected during any BSI required by paragraph
(g)(1) of this AD, before further flight, perform the applicable
corrective actions in accordance with the Accomplishment
Instructions, paragraph 2.1, Table 1 of the ASB.
(h) Terminating Action
Replacing the affected combustion chamber outer liner with a
combustion chamber outer liner that does not have P/N M601-229.3,
M601-229.3A, M601 229.3B, M601-229.31A, or M601-229.31B, constitutes
a terminating action for the repetitive inspections required by
paragraph (g)(1) of this AD.
(i) Conditional Part Installation
(1) After the effective date of this AD, it is permissible to
install an engine having an affected combustion chamber outer liner
installed on a single-engine airplane, provided that prior to
operation, the BSI required by paragraph (g)(1) of this AD is
performed and, depending on the findings, the applicable corrective
actions are performed as required by paragraph (g)(2) of this AD.
(2) After the effective date of this AD, it is permissible to
install an affected combustion chamber outer liner on the engine of
a single-engine airplane, provided that it is a part eligible for
installation, as defined in paragraph (j) of this AD, and provided
that prior to operation, the BSI required by paragraph (g)(1) of
this AD is performed and, depending on the findings, the applicable
corrective actions are performed as required by paragraph (g)(2) of
this AD.
(j) Definitions
For the purpose of this AD, a ``part eligible for installation''
is an affected combustion chamber outer liner, which was not
previously installed on an engine, or an affected combustion chamber
outer liner that, before installation, has passed an inspection (no
defects found) in accordance with the Accomplishment Instructions,
paragraphs 2.2 and 2.3 of the ASB, or a combustion chamber outer
liner that does not have P/Ns M601-229.3, M601-229.3A, M601-229.3B,
M601-229.31A, or M601-229.31B.
(k) Alternative Methods of Compliance (AMOCs)
The Manager, ECO Branch, FAA, has the authority to approve AMOCs
for this AD, if requested using the procedures found in Sec. 39.19.
In accordance with Sec. 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 (l)(2) of this AD or email to: <a href="/cdn-cgi/l/email-protection#61202f244c20254c202c2e22210700004f060e17"><span class="__cf_email__" data-cfemail="cc8d8289e18d88e18d81838f8caaadade2aba3ba">[email protected]</span></a>. 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.
(l) Additional Information
(1) Refer to European Union Aviation Safety Agency (EASA) AD
2022-0034, dated March 4, 2022, for related information. This EASA
AD may be found in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under Docket No.
FAA-2022-1239.
(2) For more information about this AD, contact Barbara
Caufield, Aviation Safety Engineer, ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone: (781) 238-7146; email:
<a href="/cdn-cgi/l/email-protection#99fbf8ebfbf8ebf8b7faf8ecfff0fcf5fdd9fff8f8b7fef6ef"><span class="__cf_email__" data-cfemail="264447544447544708454753404f434a426640474708414950">[email protected]</span></a>.
(m) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference of the service information listed in this
[[Page 58469]]
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) GE Aviation Czech s.r.o. (GEAC) Alert Service Bulletin (ASB)
ASB-H75-72-40-00-0056 [01], ASB-M601E-72-40-00-0113 [01], ASB-H80-
72-40-00-0099 [01], ASB-M601D-72-40-00-0081[01], ASB-M601F-72-40-00-
0064[01], ASB-M601Z-72-40-00-0063 [01], and ASB-H85-72-40-00-0045
[01] (single document; formatted as service bulletin identifier
[revision number]), dated February 16, 2022.
(ii) [Reserved]
(3) For GEAC service information identified in this AD, contact
GE Aviation Czech s.r.o., Beranov[yacute]ch 65, 199 02 Praha 9,
Let[ncaron]any, Czech Republic; phone: +420 222 538 111.
(4) 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.
(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: <a href="/cdn-cgi/l/email-protection#4f293d6126213c3f2a2c3b2620210f212e3d2e61282039"><span class="__cf_email__" data-cfemail="97f1e5b9fef9e4e7f2f4e3fef8f9d7f9f6e5f6b9f0f8e1">[email protected]</span></a>, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on September 21, 2022.
Christina Underwood,
Acting Director,Compliance & Airworthiness Division,Aircraft
Certification Service.
[FR Doc. 2022-20857 Filed 9-26-22; 8:45 am]
BILLING CODE 4910-13-P
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