AGENCY: Federal Aviation Administration
(FAA), Department of
ACTION: Final rule.
SUMMARY: We are adopting a new airworthiness directive (AD) for
Model TBM 700 airplanes. 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
installation of an incorrect part number during overhaul of the nose
landing gear. We are issuing this AD to require actions to address the
unsafe condition on these products.
DATES: This AD is effective July 23, 2012.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of July 23, 2012.
ADDRESSES: You may examine the AD docket on the Internet at http://
www.regulations.gov or in person at 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
For service information identified in this AD, contact SOCATA--
Direction des Services, 65921 Tarbes Cedex 9, France; telephone: +33
(0)5 62 41 73 00; fax: +33 (0)5 62 41 76 54; or in the United States
contact SOCATA North America, Inc., North Perry Airport, 7501 South
Airport Road, Pembroke Pines, Florida 33023; telephone: (954) 893-1400;
fax: (954) 964-4141; email: email@example.com; Internet:
www.socatanorthamerica.com. You may review copies of the referenced
service information at the FAA, Small Airplane Directorate, 901 Locust,
Kansas City, Missouri 64106. For information on the availability of
this material at the FAA, call (816) 329-4148.
FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer,
FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City,
Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email:
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 March 9, 2012 (77 FR
14314). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
A TBM 700 operator reported a case of rupture of the bolt
attaching the actuator hinge axle on the NLG of the aeroplane. The
results of the technical investigations carried out by SOCATA
revealed that this rupture could have been caused by the
installation of a bolt bearing incorrect Part Number (P/N) during
overhaul of the NLG. Furthermore, the investigations led to identify
the NLG part numbers identified by S/N which are potentially
affected after repair or overhaul.
This condition, if not detected and corrected, could lead to
partial disengagement of the actuator hinge axle on the NLG of the
aeroplane, resulting in nose landing gear collapse, possibly
resulting in structural damage to the aeroplane.
To address this condition, SOCATA have developed Service
Bulletin SB 70-194-32 which gives instructions for accomplishing
repetitive checks of the bolt attaching actuator hinge axle on NLG
and for replacing the bolt attaching the actuator hinge axle with a correct
bolt P/N. For the reasons described above, this AD requires accomplishment
of repetitive checks of potentially affected NLGs and replacement of
the bolt attaching the actuator hinge axle with a serviceable bolt.
This AD also prohibits installation on any aeroplane of a
potentially affected NLG, unless the bolt attaching the actuator
hinge axle has been replaced with a serviceable bolt and the NLG has
been marked with a green varnish line.
Following issuance of EASA AD 2011-0225-E, it has been
determined that further NLG P/Ns and S/Ns are affected by this AD.
SOCATA have developed an erratum to SB 70-194-32 amendment 2, which
lists the new P/Ns and S/Ns as well affected by this AD.
For the above reason, this AD, which supersedes EASA AD 2011-
0225-E, retaining its requirements, extends the list of NLG P/Ns and
S/Ns affected by the AD requirements.
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM (77 FR 14314, March 9,
2012) or on the determination of the cost to the public.
We reviewed the relevant data and determined that air safety and
the public interest require adopting the AD as proposed except for
minor editorial changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM (77 FR 14314, March 9, 2012) for correcting the unsafe condition;
Do not add any additional burden upon the public than was
already proposed in the NPRM (77 FR 14314, March 9, 2012).
Costs of Compliance
We estimate that this AD will affect 448 products of U.S. registry.
We also estimate that it would take about 1 work-hour per product to
comply with the basic requirements of this AD. The average labor rate
is $85 per work-hour. Required parts would cost about $35 per product.
Based on these figures, we estimate the cost of the AD on U.S.
operators to be $53,760, or $120 per product.
According to the manufacturer, some of the costs of this AD may be
covered under warranty, thereby reducing the cost impact on affected
individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
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
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
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
(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, 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.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov;
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 the NPRM, the regulatory evaluation,
any comments received, and other information. The street address for
the Docket Office (telephone (800) 647-5527) is in the ADDRESSES
section. Comments will be available in the AD docket shortly after
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
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: