Rule2021-17519
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
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
August 17, 2021
Effective
September 21, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for all GE Aviation Czech s.r.o. (GEAC) H75-200, H80-100, and H80-200 model turboprop engines. This AD was prompted by several reports of engine gas generator speed (Ng) rollbacks occurring below idle on GEAC H75- 200, H80-100, and H80-200 model turboprop engines. This AD requires an inspection of a certain part number (P/N) fuel control unit (FCU) and, if deficiencies are detected, replacement of the FCU with a part 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 86 Issue 156 (Tuesday, August 17, 2021)</title>
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[Federal Register Volume 86, Number 156 (Tuesday, August 17, 2021)]
[Rules and Regulations]
[Pages 45858-45860]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-17519]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0316; Project Identifier MCAI-2020-00461-E;
Amendment 39-21657; AD 2021-15-10]
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: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
GE Aviation Czech s.r.o. (GEAC) H75-200, H80-100, and H80-200 model
turboprop engines. This AD was prompted by several reports of engine
gas generator speed (Ng) rollbacks occurring below idle on GEAC H75-
200, H80-100, and H80-200 model turboprop engines. This AD requires an
inspection of a certain part number (P/N) fuel control unit (FCU) and,
if deficiencies are detected, replacement of the FCU with a part
eligible for installation. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective September 21, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of September
21, 2021.
ADDRESSES: For service information identified in this final rule,
contact GE Aviation Czech, Beranov[yacute]ch 65 199 02 Praha 9--
Let[ncaron]any, Czech Republic; phone: +420 222 538 111. 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
(781) 238-7759. It is also available at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2021-0316.
Examining the AD Docket
You may examine the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2021-0316; 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.
FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7146; fax: (781) 238-7199; email:
<a href="/cdn-cgi/l/email-protection#52303320303320337c313327343b373e36123433337c353d24"><span class="__cf_email__" data-cfemail="0a686b78686b786b24696b7f6c636f666e4a6c6b6b246d657c">[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 apply to all GEAC H75-200, H80-
100, and H80-200 model turboprop engines. The NPRM published in the
Federal Register on April 20, 2021 (86 FR 20465). The NPRM was prompted
by several reports of engine gas generator speed (Ng) rollbacks
occurring below idle on GEAC H75-200, H80-100, and H80-200 model
turboprop engines. The NPRM proposed to require an inspection of a
certain P/N FCU and, if deficiencies are detected, replacement of the
FCU with a part eligible for installation. The FAA is issuing this AD
to address the unsafe condition on these products.
The European Union Aviation Safety Agency (EASA), which is the
Technical Agent for the Member States of the European Community, has
issued EASA AD 2020-0082, dated April 1, 2020 (referred to after this
as ``the MCAI''), to address the unsafe condition on these products.
The MCAI states:
Several occurrences have been reported of engine gas generator
speed (Ng) rollbacks below idle on engines equipped with an affected
part.
The investigation determined that, during these events, the
engine control lever (ECL) was set to idle, and identified as
contributing factors specific environmental temperatures, possibly
in combination with a high power off-take. The idle setting may be
used in flight, in particular during the approach phase.
This condition, if not detected and corrected, may lead to loss
of engine power and eventually, on a single engine aeroplane,
possibly result in loss of control.
To address this potential unsafe condition, GEAC issued the ASB
providing applicable instructions.
You may obtain further information by examining the MCAI in the AD
docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating
Docket No. FAA-2021-0316.
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 GE Aviation Czech Alert Service Bulletin (ASB) No.
ASB-H80-73-00-00-0052[00]/ASB-H75-73-00-00-0022[00] (single document),
Revision 00, dated February 6, 2020. The service information specifies
procedures for performing a functional inspection of the FCU, P/N LUN
6590.07-8, and replacing the FCU. This service information is
reasonably available because the interested parties have access to it
through their normal
[[Page 45859]]
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
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Functional Inspection of FCU.......... 0.50 work-hours x $85 $0 $42.50 $1,402.50
per hour = $42.50.
Replace FCU........................... 4 work-hours x $85 per 25,000 25,340 836,220
hour = $340.
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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 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.
Adoption of 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:
2021-15-10 GE Aviation Czech s.r.o. (Type Certificate previously
held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.):
Amendment 39-21657; Docket No. FAA-2021-0316; Project Identifier
MCAI-2020-00461-E.
(a) Effective Date
This airworthiness directive (AD) is effective September 21,
2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to GE Aviation Czech s.r.o. (GEAC) (Type
Certificate previously held by WALTER Engines a.s., Walter a.s., and
MOTORLET a.s.) H75-200, H80-100, and H80-200 model turboprop
engines.
(d) Subject
Joint Aircraft System Component (JASC) Code 7321, Fuel Control/
Turbine Engines.
(e) Unsafe Condition
This AD was prompted by several reports of engine gas generator
speed (Ng) rollbacks below idle on GEAC H75-200, H80-100, and H80-
200 model turboprop engines with a fuel control unit (FCU), part
number (P/N) LUN 6590.07-8, installed. The FAA is issuing this AD to
prevent engine Ng rollbacks below idle on engines equipped with an
FCU, P/N LUN 6590.07-8. The unsafe condition, if not addressed,
could result in loss of engine power and loss of control of the
airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) Within 100 flight hours (FHs) after the effective date of
this AD, and thereafter at intervals not to exceed 100 FHs since the
previous inspection, perform a functional inspection of the FCU, P/N
LUN 6590.07-8, using the Accomplishment Instructions, paragraph
2.1.1, Ground Check Procedure, of GE Aviation Czech Alert Service
Bulletin No. ASB-H80-73-00-00-0052[00]/ASB-H75-73-00-00-0022[00]
(single document), Revision 00, dated February 6, 2020 (the ASB).
(2) If, during any functional inspection required by paragraph
(g)(1) of this AD, the engine Ng is:
(i) Equal to or greater than 57% up to and including 60%, then
no further action is required.
(ii) Equal to or greater than 55% but lower than 57%, then
follow the steps 1 through 3 under ``Ng speed is equal to or above
55% and below 57%'' in the Accomplishment Instructions, paragraph
2.1.2, Ground check results evaluation, of the ASB.
(iii) Below 55%, then follow steps 1 and 2 under ``Ng speed is
below 55%'' in the Accomplishment Instructions, paragraph 2.1.2,
Ground check results evaluation, of the ASB.
Note 1 to paragraph (g)(2): In the Accomplishment Instructions,
paragraph 2.1.2, of the ASB, where the ASB states ``Do steps 1 thru
8 after the FCU adjustment,'' do steps 1 through 7 of the
Accomplishment Instructions, paragraph 2.1.1, in the ASB.
(3) During the next engine overhaul, or within 44 months,
whichever occurs first after the effective date of this AD, remove
the FCU, P/N LUN 6590.07-8, and replace it with a part eligible for
installation.
(h) Installation Prohibition
After the effective date of this AD, do not install an FCU, P/N
LUN 6590.07-8, onto any engine.
(i) Definition
For the purpose of this AD, a part eligible for installation is
an FCU, P/N LUN 6590.71-8.
(j) Terminating Action
Installing a part eligible for installation onto an engine as
required by paragraph (g)(2) or (3) of this AD, as applicable,
constitutes terminating action for the functional inspections
required by paragraph (g)(1) of this AD for that engine.
[[Page 45860]]
(k) No Reporting Requirements
The reporting requirements specified in paragraph 2.1.2 of the
ASB are not required by this AD.
(l) 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:
<a href="/cdn-cgi/l/email-protection#43020d066e02076e020e0c00032522226d242c35"><span class="__cf_email__" data-cfemail="b5f4fbf098f4f198f4f8faf6f5d3d4d49bd2dac3">[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.
(m) Related Information
(1) 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; fax: (781) 238-
7199; email: <a href="/cdn-cgi/l/email-protection#9af8fbe8f8fbe8fbb4f9fbeffcf3fff6fedafcfbfbb4fdf5ec"><span class="__cf_email__" data-cfemail="65070417070417044b060410030c000901250304044b020a13">[email protected]</span></a>.
(2) Refer to European Union Aviation Safety Agency (EASA) AD
2020-0082, dated April 1, 2020, for more information. You may
examine the EASA AD in the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a>
by searching for and locating Docket No. FAA-2021-0316.
(n) 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) GE Aviation Czech Alert Service Bulletin No. ASB-H80-73-00-
00-0052[00]/ASB-H75-73-00-00-0022[00] (single document), Revision
00, dated February 6, 2020.
(ii) [Reserved]
(3) For GE Aviation Czech service information identified in this
AD, contact GE Aviation Czech, 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 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: <a href="/cdn-cgi/l/email-protection#6204104c0b0c11120701160b0d0c220c0310034c050d14"><span class="__cf_email__" data-cfemail="4d2b3f6324233e3d282e392422230d232c3f2c632a223b">[email protected]</span></a>, or go to: <a href="https://www.archives.gov/federal-register/cfr/ibr-locations.html">https://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on July 15, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-17519 Filed 8-16-21; 8:45 am]
BILLING CODE 4910-13-P
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