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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 para-
    graph (g)(4) of this AD  to limit  the use of a windmilling restart to
    only an emergency procedure.

FIGURE 1 TO PARAGRAPH (G)(4) 0F THIS AD – RESTART IN-FLIGHT BY WINDMILLING
__________________________________________________________________________
Restart In-Flight by Windmilling

In  case  of an  engine  malfunction determine  the  root cause  and  only
continue in case a safe restart is possible.

1. Max.  demonstrated  altitude  for  immediate  restart  by  windmilling:
   15,000ft.

2. Max. demonstrated altitude  for  restart  after 10 min. and ambient air
   temperature higher than ISA by windmilling: 10,000ft.

3. Max. demonstrated altitude  for  restart  after  5 min. and ambient air
   temperature between ISA and ISA minute 10°C by windmilling: 10,000ft.

4. Max. demonstrated altitude  for  restart  after  2 min. and ambient air
   temperature below ISA minute 10°C by windmilling: 10,000ft.

5. Airspeed: see applicable Aircraft Flight Manual.

6. Power Levers – "IDLE".

7. Engine Master – "ON".

Move power lever slightly forward to a power rating assuring that the re-
ferring engine is delivering thrust as a rotating propeller is not a guar-
antee for a running engine.
__________________________________________________________________________

(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-MÄM-42-973, and AFM TR TR-MÄM-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 in-
    spector 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: 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  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 Barbara.Caufield@faa.gov.

(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 http:
    //www.regulations.gov 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-MÄM-42-973, dated August 12, 2016.

(iii) Diamond Aircraft AFM TR TR-MÄM-62-240, dated August 12, 2016.

(3) For Austro Engine GmbH service information identified in this AD, con-
    tact  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-Straße 5, A-2700 Wiener Neustadt, phone: +43 2622 26700, Fax: +43
    2622 26780; Internet: www.diamondaircraft.com.

(4) You  may  view  this  service information at FAA, Engine and Propeller
    Standards Branch, 1200 District Avenue, Burlington, MA, 01803. For in-
    formation 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: http://www.archives.gov/federal-register/cfr/ibr-
    locations.html.

Issued in Burlington, Massachusetts, on October 19, 2018.  Karen M. Grant,
Acting Manager, Engine and Propeller Standards Branch, Aircraft Certifica-
tion Service.

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: Barbara.Caufield@faa.gov.
PREAMBLE 

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.

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

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-Strase 5, A-2700 Wiener
Neustadt, phone: +43 2622 26700, Fax: +43 2622 26780; internet:
www.diamondaircraft.com. 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 http://www.regulations.gov by searching for and locating
Docket No. FAA-2017-1138.

Examining the AD Docket

You may examine the AD docket on the internet at http://www.regulations.
gov 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: Barbara.Caufield@faa.gov.

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 http://www.regulations.gov 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-MAM-42-973, and AFM TR TR-MAM-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-MAM-42-973, dated August 12, 2016, for
DA 42 NG and DA 42 M-NG airplanes, and AFM TR TR- MAM-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:

Estimated Costs

Action
Labor cost
Parts cost
Cost per product
Cost on U.S. operators
Amend AFM 1 work hour x $85 per hour = $85
$0
$85
$17,935
Remove and replace timing chain 8 work hours x $85 per hour = $680
$775
$1,455
$307,005

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

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 adding the following new airworthiness
directive (AD):