AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Technify Motors GmbH (type certificate previously held by Thielert
Aircraft Engines GmbH) TAE 125-02-99 and TAE 125-02-114 reciprocating
engines. This AD requires removal of each high-pressure (HP) fuel pump
before 300 flight hours (FHs) in service or within 55 FHs after the
effective date of the AD, whichever occurs later. This AD was prompted
by in-flight shutdowns on airplanes with TAE 125-02 engines. We are
issuing this AD to prevent failure of the HP fuel pump, which could
result in damage to the engine and damage to the airplane.

DATES: This AD becomes effective October 2, 2014.

ADDRESSES: For service information identified in this AD, contact
Technify Motors GmbH, Platanenstrasse 14, D-09356 Sankt Egidien,
Germany, phone: +49-37204-696-0; fax: +49-37204-696-55; email:
info@centurion.aero. You may view this service information at the FAA,
Engine & Propeller Directorate, 12 New England Executive Park,
Burlington, MA. For information on the availability of this material at
the FAA, call 781-238-7125.

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-2014-
0179; or in person at the Docket Management Facility between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays. The AD docket
contains this AD, the mandatory continuing airworthiness information
(MCAI), the regulatory evaluation, any comments received, and other
information. The address for the Docket Office (phone: 800-647-5527) is
Document Management Facility, 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: Kenneth Steeves, Aerospace Engineer,
Engine Certification Office, FAA, Engine & Propeller Directorate, 12
New England Executive Park, Burlington, MA 01803; phone: 781-238-7765;
fax: 781-238-7199; email: kenneth.stevees@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 the specified products. The
NPRM was published in the Federal Register on May 23, 2014 (79 FR
29693). The NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:

In-flight shut down occurrences have been reported on aeroplanes
equipped with TAE 125-02 engines. The initial results of the
investigations showed that abnormal high wear of the high pressure
fuel pumps was the probable cause of the engine failure.
This condition, if not corrected, could result in further cases
of engine power loss events and consequent potential loss of control
of the aeroplane.

Comments

We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM (79 FR 29693, May 23,
2014).

Conclusion

We reviewed the available data and determined that air safety and
the public interest require adopting this AD as proposed.

Costs of Compliance

We estimate that this AD affects 160 engines installed on airplanes
of U.S. registry. We also estimate that it will take about 1 hour per
engine to comply with this AD. The average labor rate is $85 per hour.
Based on these figures, we estimate the cost of the AD on U.S.
operators to be $13,600.

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 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) Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in Alaska to the extent
that it justifies making a regulatory distinction, 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):