Document ID: FAA-2009-0753-0001
Agency: faa
Document Type: Rule
Title: Airworthiness Directives; Thielert Aircraft Engines GmbH (TAE) Model TAE 125-01 Reciprocating Engines
Posted Date: 2009-09-17T04:00Z

[Federal Register: September 17, 2009 (Volume 74, Number 179)]
[Proposed Rules]
[Page 47760-47762]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr17se09-12]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0753; Directorate Identifier 2009-NE-31-AD]
RIN 2120-AA64

Airworthiness Directives; Thielert Aircraft Engines GmbH (TAE)
Model TAE 125-01 Reciprocating Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

[[Page 47761]]

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for the
products listed above. This proposed AD results from mandatory
continuing airworthiness information (MCAI) issued by an aviation
authority of another country to identify and correct an unsafe
condition on an aviation product. The MCAI describes the unsafe
condition as:

    In-flight engine shutdown incidents were reported on aircraft
equipped with TAE-125-01 engines. This was found to be mainly the
result of operation over a long time period with broken piston
cooling oil nozzles which caused thermal overload of the piston.

    We are proposing this AD to prevent engine in-flight shutdown,
possibly resulting in reduced control of the aircraft.

DATES: We must receive comments on this proposed AD by October 19,
2009.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://
www.regulations.gov and follow the instructions for sending your
comments electronically.
     Mail: Docket Management Facility, U.S. Department of
Transportation, 1200 New Jersey Avenue, SE., West Building Ground
Floor, Room W12-140, Washington, DC 20590-0001.
     Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
     Fax: (202) 493-2251.
    Contact Thielert Aircraft Engines GmbH, Platanenstrasse 14 D-09350,
Lichtenstein, Germany, telephone: +49-37204-696-0; fax: +49-37204-696-
55; e-mail: info@centurion-engines.com, for the service information
identified in this proposed AD.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://
www.regulations.gov; or in person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Operations office (telephone (800) 647-5527) is
the same as the Mail address provided in the ADDRESSES section.
Comments will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Jason Yang, Aerospace Engineer, Engine
Certification Office, FAA, Engine and Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; e-mail:
jason.yang@faa.gov; telephone (781) 238-7747; fax (781) 238-7199.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2009-0753;
Directorate Identifier 2009-NE-31-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD based on those comments.
    We will post all comments we receive, without change, to http://
www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact
with FAA personnel concerning this proposed AD. Using the search
function of the Web site, anyone can find and read the comments in any
of our dockets, including, if provided, the name of the individual who
sent the comment (or signed the comment on behalf of an association,
business, labor union, etc.). You may review the DOT's complete Privacy
Act Statement in the Federal Register published on April 11, 2000 (65
FR 19477-78).

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
Airworthiness Directive 2007-0232, dated August 23, 2007 (referred to
after this as ``the MCAI''), to correct an unsafe condition for the
specified products. The MCAI states:

    In-flight engine shutdown incidents were reported on aircraft
equipped with TAE-125-01 engines. This was found to be mainly the
result of operation over a long time period with broken piston
cooling oil nozzles which caused thermal overload of the piston.

You may obtain further information by examining the MCAI in the AD
docket.

Relevant Service Information

    Thielert has issued Service Bulletin No. TM TAE 125-0017, Revision
2, dated February 22, 2008. The actions described in this service
information are intended to correct the unsafe condition identified in
the MCAI.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of Germany
and is approved for operation in the United States. Pursuant to our
bilateral agreement with Germany, EASA has notified us of the unsafe
condition described in the MCAI and service information referenced
above. We are proposing this AD because we evaluated all information
provided by EASA and determined the unsafe condition exists and is
likely to exist or develop on other products of the same type design.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD
would affect about 250 engines of U.S. registry. We also estimate that
it would take about 2 work-hours per engine to comply with this
proposed AD. The average labor rate is $80 per work-hour. Required
parts would cost about $30 per engine. Based on these figures, we
estimate the cost of the proposed AD on U.S. operators to be $47,500.

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.

Regulatory Findings

    We 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;

[[Page 47762]]

    2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979); 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.
    We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD and placed it in the AD docket.

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

    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 AD:

Thielert Aircraft Engines GmbH: Docket No. FAA-2009-0753;
Directorate Identifier 2009-NE-31-AD.

Comments Due Date

    (a) We must receive comments by October 19, 2009.

Affected Airworthiness Directives (ADs)

    (b) None.

Applicability

    (c) This AD applies to Thielert Aircraft Engines GmbH (TAE)
model TAE 125-01 reciprocating engines, excluding engines that have
been modified to TAE Design Modification No. 2007-001. These engines
are installed in, but not limited to, Diamond Aircraft Industries
Model DA42, Piper PA-28-61 (Supplemental Type Certificate (STC) No.
SA03303AT), Cessna 172F, 172G, 172H, 172I, 172K, 172L, 172M, 172N,
172P, 172R, 172S, F172F, F172G, F172H, F172K, F172L, F172M, F172N,
and F172P (STC No. SA01303WI) airplanes.

Reason

    (d) This AD results from mandatory continuing airworthiness
information (MCAI) issued by an aviation authority of another
country to identify and correct an unsafe condition on an aviation
product. The MCAI describes the unsafe condition as:
    In-flight engine shutdown incidents were reported on aircraft
equipped with TAE-125-01 engines. This was found to be mainly the
result of operation over a long time period with broken piston
cooling oil nozzles which caused thermal overload of the piston.
    We are issuing this AD to prevent engine in-flight shutdown,
possibly resulting in reduced control of the aircraft.

Actions and Compliance

    (e) Unless already done, do the following actions:
    (1) Within the next 110 flight hours, or during the next
scheduled maintenance, whichever occurs first after the effective
date of this AD, inspect the engine and engine oil for any evidence
or pieces of broken piston cooling nozzles.
    (2) Use the inspection instructions in Thielert Service Bulletin
No. TM TAE 125-0017, Revision 2, dated February 22, 2008, to perform
the inspection.
    (3) Thereafter, repetitively inspect the engine and engine oil
for any evidence or pieces of broken piston cooling nozzles, within
every additional 100 flight hours.
    (4) If any evidence of a failed cooling nozzle is found, remove
the engine from service before further flight.

Alternative Methods of Compliance (AMOCs)

    (f) The Manager, Engine Certification Office, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19.

Related Information

    (g) Refer to European Aviation Safety Agency AD 2008-0016 R1,
dated February 22, 2008, and Thielert Aircraft Engines GmbH,
Platanenstrasse 14 D-09350, Lichtenstein, Germany, telephone: +49-
37204-696-0; fax: +49-37204-696-55; e-mail: info@centurion-
engines.com, for related information.
    (h) Contact Jason Yang, Aerospace Engineer, Engine Certification
Office, FAA, Engine and Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803; e-mail: jason.yang@faa.gov;
telephone (781) 238-7747; fax (781) 238-7199, for more information
about this AD.

    Issued in Burlington, Massachusetts, on September 10, 2009.
Peter A. White,
Assistant Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. E9-22314 Filed 9-16-09; 8:45 am]

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