AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: We are adopting a new airworthiness directive (AD) for BRP--
POWERTRAIN GMBH & CO KG Rotax 914 F2, 914 F3, and 914 F4 reciprocating
engines. This AD results from mandatory continuing airworthiness
information (MCAI) originated 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 isolated
manufacturing deviations reportedly found on the threads of a certain
batch of fuel pressure regulators, part number (P/N) 887130, installed
on Rotax 914 F series engines, which could result in fuel leakage
during engine operation. We are issuing this AD to prevent fuel leaks,
which could result in an in-flight fire and damage to the aircraft.

DATES: This AD becomes effective February 27, 2012.

ADDRESSES: The Docket Operations office is located at Docket Management
Facility, U.S. Department of Transportation, 1200 New Jersey Avenue
SE., West Building Ground Floor, Room W12-140, Washington, DC 20590-
0001.

FOR FURTHER INFORMATION CONTACT: Mark Riley, Aerospace Engineer, Engine
Certification Office, FAA, Engine & Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; email:
mark.riley@faa.gov; phone: (781) 238-7758; fax: (781) 238-7199.

SUPPLEMENTARY INFORMATION:

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM was published in the Federal Register on September 28, 2011
(76 FR 59950). That NPRM proposed to correct an unsafe condition for
the specified products. The MCAI states that:

Isolated manufacturing deviations have been reportedly found on
the threads of a certain batch of fuel pressure regulators, Part
Number (P/N) 887130, installed on Rotax 914 F series engines.

The corrective action includes replacing fuel pressure regulators
listed in Table 1 of this AD with a fuel pressure regulator that is not
listed in Table 1 of this AD, and is eligible for installation. You may
obtain further information by examining the MCAI in the AD docket.

Comments

We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM.

Conclusion

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

Differences Between This AD and the MCAI or Service Information

The European Aviation Safety Agency AD requires replacing the fuel
pressure regulator within 100 flight hours (FHs) or 6 months after the
effective date of that AD, whichever occurs first. This AD requires
replacing the fuel pressure regulator within 100 FHs after the
effective date of this AD.

Costs of Compliance

We estimate that this AD will affect about 75 products of U.S.
registry. We also estimate that it will take about 2 work-hours per
product to comply with this AD. The average labor rate is $85 per work-
hour. Required parts cost about $180 per product. Based on these
figures, we estimate the cost of the AD on U.S. operators to be
$26,250.

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); 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 AD and placed it in the AD docket.

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 AD, the
regulatory evaluation, any comments received, and other information.
The street address for the Docket Operations office (phone: (800) 647-
5527) is provided in the ADDRESSES section. Comments will be available
in the AD docket shortly after receipt.

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 AD: