AD 2018-18-02
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Austro | Various | Airworthiness Directives; Austro Engine GmbH Engines |
Unsafe Condition
Considerable wear of the timing chain has been detected on some engines. This may have been caused by windmilling restarts, which are known to cause high stress to the timing chain. This condition, if not detected and corrected, could lead to failure of the timing chain and consequent engine power loss, possibly resulting in reduced control of the aeroplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the timing chain for engines with known windmilling restarts, and require amendment of the applicable Aircraft Flight Manual (AFM).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Austro Engine GmbH model E4 engines with serial numbers that have a "-B" or "-C" configuration and to model E4P engines, all serial numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
We are adopting a new airworthiness directive (AD) for certain Austro Engine GmbH model E4 engines and for all model E4P engines. This AD was prompted by reports of considerable wear on the timing chain on these engines. This AD requires replacement of the timing chain and amending certain airplane flight manuals to limit the use of windmill restarts. We are issuing this AD to address the unsafe condition on these products.
Applicability Source Text
Show captured applicability text from the source AD
(c) Applicability
This AD applies to Austro Engine GmbH model E4 engines with
serial numbers that have a ``-B'' or ``-C'' configuration and to
model E4P engines, all serial numbers.
Document Text
Show stored source text (verify against official source)
[Federal Register Volume 83, Number 207 (Thursday, October 25, 2018)]
[Rules and Regulations]
[Pages 53802-53806]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2018-23186]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2017-1138; Product Identifier 2017-NE-41-AD; Amendment
39-19381; AD 2018-18-02]
RIN 2120-AA64
Airworthiness Directives; Austro Engine GmbH Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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[[Page 53803]]
SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Austro Engine GmbH model E4 engines and for all model E4P engines. This
AD was prompted by reports of considerable wear on the timing chain on
these engines. This AD requires replacement of the timing chain and
amending certain airplane flight manuals to limit the use of windmill
restarts. We are issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective November 29, 2018.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of November 29,
2018.
ADDRESSES: For Austro Engine GmbH service information identified in
this final rule, contact Austro Engine GmbH, Rudolf-Diesel-Strasse 11,
A-2700 Weiner Neustadt, Austria; phone +43 2622 23000; fax: +43 2622
23000-2711; internet: www.austroengine.at. For Diamond Aircraft
Industries service information in this final rule, contact Diamond
Aircraft Industries, N. A., Otto-Stra[szlig]e 5, A-2700 Wiener
Neustadt, phone: +43 2622 26700, Fax: +43 2622 26780; internet:
<a href="http://www.diamondaircraft.com">www.diamondaircraft.com</a>. You may view this service information at the
FAA, Engine and Propeller Standards 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 on the
internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating
Docket No. FAA-2017-1138.
Examining the AD Docket
You may examine the AD docket on the internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating Docket No. FAA-2017-
1138; 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,
the regulatory evaluation, any comments received, and other
information. The address for Docket Operations (phone: 800-647-5527) 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, Aerospace 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#8ecceffceceffcefa0cdeffbe8e7ebe2eacee8efefa0e9e1f8"><span class="__cf_email__" data-cfemail="d795b6a5b5b6a5b6f994b6a2b1beb2bbb397b1b6b6f9b0b8a1">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to certain Austro Engine GmbH
model E4 engines and all model E4P engines. The NPRM published in the
Federal Register on June 1, 2018 (83 FR 25410). The NPRM was prompted
by reports of considerable wear on the timing chain on these engines.
The NPRM proposed to require replacement of the timing chain and
amending certain airplane flight manuals to limit the use of windmill
restarts. We are issuing this AD to address the unsafe condition on
these products.
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
AD 2017-0103, dated June 14, 2017 (referred to after this as ``the
MCAI''), to address the unsafe condition on these products.
The MCAI states:
Considerable wear of the timing chain has been detected on some
engines. This may have been caused by windmilling restarts, which
are known to cause high stress to the timing chain. This condition,
if not detected and corrected, could lead to failure of the timing
chain and consequent engine power loss, possibly resulting in
reduced control of the aeroplane.
To address this potential unsafe condition, Austro Engine
included instructions in the engine maintenance manual to
periodically inspect the condition of the timing chain and,
depending on findings, to replace the timing chain and the chain
wheel. The operation manual was updated to allow windmilling restart
only as an emergency procedure.
More recently, Austro Engines published Mandatory Service
Bulletin (MSB) MSB-E4-017/2, providing instructions to replace the
timing chain for engines with known windmilling restarts. For the
reason described above, this [EASA] AD requires replacement of the
timing chain for engines with known windmilling restarts, and
requires amendment of the applicable Aircraft Flight Manual (AFM).
You may obtain further information by examining the MCAI in the AD
docket on the internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for
and locating Docket No. FAA-2017-1138.
Revision to Airplane Flight Manual
We revised this AD to allow affected Austro Engine GmbH model E4
engines installed on Diamond Aircraft Industries (DAI) model DA 42 NG
and DA 42 M-NG airplanes and Austro Engine GbmH model E4P engines
installed on DAI model DA 62 airplanes to comply with paragraph (g)(4)
of this AD by adding, respectively, Airplane Flight Manual (AFM)
Temporary Revision (TR) TR-M[Auml]M-42-973, and AFM TR TR-M[Auml]M-62-
240, both dated August 12, 2016. These actions are equivalent to
inserting the information in figure (1) to paragraph (g)(4) of this AD
into the respective airplane flight manuals.
Comments
We gave the public the opportunity to participate in developing
this final rule. We received no comments on the NPRM or on the
determination of the cost to the public.
Conclusion
We reviewed the relevant data and determined that air safety and
the public interest require adopting this final rule as proposed.
Related Service Information Under 1 CFR Part 51
We reviewed Austro Engine MSB No. MSB-E4-017/2, Revision 2, dated
December 2, 2016. The MSB describes procedures for replacement of the
timing chain.
We reviewed AFM TR TR-M[Auml]M-42-973, dated August 12, 2016, for
DA 42 NG and DA 42 M-NG airplanes, and AFM TR TR- M[Auml]M-62-240,
dated August 12, 2016, for DA 62 airplanes. These Temporary Revisions
define the removal of the normal operation procedure for windmilling
restart for the respective airplanes. 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
the ADDRESSES section.
Costs of Compliance
We estimate that this AD affects 211 engines installed on airplanes
of U.S. registry. We estimate the following costs to comply with this
AD:
[[Page 53804]]
Estimated Costs.
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Amend AFM............................. 1 work hour x $85 per $0 $85 $17,935
Remove and replace timing chain....... hour = $85. $775 $1,455 $307,005
8 work hours x $85 per
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.
We are 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.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to engines, propellers, and
associated appliances to the Manager, Engine and Propeller Standards
Branch, Policy and Innovation Division.
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) Is not a ``significant rule'' under DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in Alaska, and
(4) 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 (AD):
AD 2018-18-02; Austro Engine GmbH Engines: Amendment 39-19381;
Docket No. FAA-2017-1138; Product Identifier 2017-NE-41-AD.
(a) Effective Date
This AD is effective November 29, 2018.
(b) Affected Ads
None.
(c) Applicability
This AD applies to Austro Engine GmbH model E4 engines with
serial numbers that have a ``-B'' or ``-C'' configuration and to
model E4P engines, all serial numbers.
(d) Subject
Joint Aircraft System Component (JASC) Code 8520, Reciprocating
Engine Power Section.
(e) Unsafe Condition
This AD was prompted by reports of considerable wear on the
timing chain on these engines. We are issuing this AD to prevent
failure of the engine timing chain. The unsafe condition, if not
addressed, could result in failure of the engine timing chain, loss
of engine thrust control, and reduced control of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) Determine whether the engine is a Group 1 or Group 2 engine
as follows.
(i) A Group 1 engine is an engine equipped with a timing chain
that was installed on an engine that experienced a windmill restart,
or an engine in which it cannot be determined if the engine
experienced any windmilling restarts.
(ii) A Group 2 engine is an engine that is equipped with a
timing chain that has not experienced any windmilling restarts.
(2) For Group 1 engines: Before the affected timing chain
exceeds 945 engine flight hours (EFHs) since installation on an
engine, or within 110 EFHs after the effective date of this AD,
whichever occurs later, replace the timing chain in accordance with
the instructions in Technical Details, paragraph 2, in Austro Engine
Mandatory Service Bulletin (MSB) No. MSB-E4-017/2, Revision 2, dated
December 2, 2016.
(3) For Group 1 and Group 2 engines: After the effective date of
this AD, following each windmill restart of an engine, before the
timing chain of that engine exceeds 945 EFHs since first
installation on an engine, or within 110 EFHs after that windmilling
restart, whichever occurs later, replace the timing chain in
accordance with the instructions in Technical Details, paragraph 2,
in Austro Engine MSB No. MSB-E4-017/2, Revision 2, dated December 2,
2016.
(4) For Group 1 and Group 2 engines: Within 30 days after the
effective date of this AD, amend the applicable airplane flight
manual under emergency procedures by adding the information in
figure 1 to paragraph (g)(4) of this AD to limit the use of a
windmilling restart to only an emergency procedure.
[[Page 53805]]
[GRAPHIC] [TIFF OMITTED] TR25OC18.000
(5) For affected Austro Engine GmbH model E4 engines installed
on Diamond Aircraft Industries (DAI) model DA 42 NG and DA 42 M-NG
airplanes and for Austro Engine GbmH model E4P engines installed on
DAI model DA 62 airplanes, using Airplane Flight Manual (AFM)
Temporary Revision (TR) TR-M[Auml]M-42-973, and AFM TR TR-M[Auml]M-
62-240, both dated August 12, 2016, respectively, to update the
applicable AFM is an acceptable method to comply with paragraph
(g)(4) of this AD.
(h) 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
ECO Branch, send it to the attention of the person identified in
paragraph (i)(1) of this AD. You may email your request to: <a href="/cdn-cgi/l/email-protection#561718137b17127b171b19151630373778313920"><span class="__cf_email__" data-cfemail="672629224a26234a262a28242701060649000811">[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 or certificate holding
district office.
(i) Related Information
(1) For more information about this AD, contact Barbara
Caufield, Aerospace 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#14567566767566753a577561727d717870547275753a737b62"><span class="__cf_email__" data-cfemail="94d6f5e6f6f5e6f5bad7f5e1f2fdf1f8f0d4f2f5f5baf3fbe2">[email protected]</span></a>.
(2) Refer to EASA AD 2017-0103, dated June 14, 2017, for more
information. You may examine the EASA AD in the AD docket on the
internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for and locating
it in Docket No. FAA-2017-1138.
(j) 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) Austro Engine Mandatory Service Bulletin No. MSB-E4-017/2,
Revision 2, dated December 2, 2016.
(ii) Diamond Aircraft Airplane Flight Manual (AFM) Temporary
Revision (TR) TR-M[Auml]M-42-973, dated August 12, 2016.
(iii) Diamond Aircraft AFM TR TR-M[Auml]M-62-240, dated August
12, 2016.
(3) For Austro Engine GmbH service information identified in
this AD, contact Austro Engine GmbH, Rudolf-Diesel-Strasse 11, A-
2700 Weiner Neustadt, Austria; phone +43 2622 23000; fax: +43 2622
23000-2711; internet: www.austroengine.at. For Diamond Aircraft
Industries service information in this AD, contact Diamond Aircraft
Industries, N. A., Otto-Stra[szlig]e 5, A-2700 Wiener Neustadt,
phone: +43 2622 26700, Fax: +43 2622 26780; internet:
<a href="http://www.diamondaircraft.com">www.diamondaircraft.com</a>.
(4) You may view this service information at FAA, Engine and
Propeller Standards 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, call 202 741 6030, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">http://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
[[Page 53806]]
Issued in Burlington, Massachusetts, on October 19, 2018.
Karen M. Grant,
Acting Manager, Engine and Propeller Standards Branch, Aircraft
Certification Service.
[FR Doc. 2018-23186 Filed 10-24-18; 8:45 am]
BILLING CODE 4910-13-P
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Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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