[Federal Register Volume 79, Number 69 (Thursday, April 10, 2014)]
[Rules and Regulations]
[Pages 19812-19814]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2014-08008]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-27009; Directorate Identifier 2007-NE-02-AD;
Amendment 39-17820; AD 2014-07-06]
RIN 2120-AA64
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are superseding airworthiness directive (AD) 2007-19-09R1
for all Turbomeca S.A. Arriel 2B1 turboshaft engines that do not have
modification TU157 incorporated. AD 2007-19-09R1 required replacement
of the hydromechanical metering unit (HMU) with a serviceable HMU. This
AD requires HMU replacement; reduction of the compliance interval; and
inclusion of the power turbine C2 cycle consumption rate when
determining compliance times. This AD was prompted by reports of
ruptures on HMU constant delta pressure valves that have less than
2,000 hours in service. We are issuing this AD to prevent failure of
the HMU, which could lead to damage to the engine, and damage to the
aircraft.
DATES: This AD is effective May 15, 2014.
ADDRESSES: For service information identified in this AD, contact
Turbomeca, S.A., 40220 Tarnos, France; phone: 33 5 59 74 40 00; telex:
570 042; fax: 33 5 59 74 45 15. 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-2007-
27009; 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: James Gray, Aerospace Engineer, Engine
Certification Office, FAA, Engine & Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; phone: 781-238-7742; fax:
781-238-7199; email: [email protected].
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2007-19-09R1, Amendment 39-16322 (75 FR 30687,
June 2, 2010), (``AD 2007-19-09R1''). AD 2007-19-09R1 applied to the
specified products. The NPRM published in the Federal Register on
December 24, 2013 (78 FR 77614). The
[[Page 19813]]
NPRM proposed to continue to require HMU replacement. That NPRM also
proposed to require reduction of the compliance interval; and inclusion
of the power turbine C2 cycle consumption rate when determining
compliance times.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM (78 FR 77614, December 24,
2013).
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 264 engines installed on airplanes
of U.S. registry. We also estimate that it will take about one hour per
engine to comply with this AD. The average labor rate is $85 per hour.
Required parts cost about $5,000 per engine. Based on these figures, we
estimate the cost of this AD to U.S. operators is $1,342,440.
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
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 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 part 39 of the Federal Aviation
Regulations (14 CFR part 39) as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
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]
0
2. The FAA amends Sec. 39.13 by removing airworthiness directive (AD)
2007-19-09R1, Amendment 39-16322 (75 FR 30687, June 2, 2010), and
adding the following new AD:
2014-07-06 Turbomeca S.A.: Amendment 39-17820; Docket No. FAA-2007-
27009; Directorate Identifier 2007-NE-02-AD.
(a) Effective Date
This AD is effective May 15, 2014.
(b) Affected ADs
This AD supersedes AD 2007-19-09R1, Amendment 39-16322 (75 FR
30687, June 2, 2010).
(c) Applicability
This AD applies to Turbomeca S.A. Arriel 2B1 turboshaft engines
that do not have modification TU157 incorporated.
(d) Unsafe Condition
This AD was prompted by reports of ruptures on hydromechanical
metering unit (HMU) constant delta pressure valves that have less
than 2,000 hours in service. We are issuing this AD to prevent
failure of the HMU, which could lead to damage to the engine, and
damage to the aircraft.
(e) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(1) HMU operating hours and power turbine C2 cycles are known:
(i) If on the effective date of this AD, the HMU C2 cycles are
less than 900, then replace the HMU before the HMU accumulates 1,000
C2 cycles or 1,500 HMU operating hours, whichever occurs first;
(ii) If on the effective date of this AD, the HMU C2 cycles are
900 or more, then replace the HMU within 100 HMU C2 cycles after the
effective date of this AD;
(iii) Thereafter, replace the HMU at every 1,000 HMU C2 cycles
or 1,500 HMU operating hours, whichever comes first.
(2) HMU operating hours are known and C2 cycles are not known:
(i) If on the effective date of this AD, the HMU operating hours
are less than 1,100, then replace the HMU before accumulating 1,200
HMU operating hours;
(ii) If on the effective date of this AD, the HMU operating
hours are 1,100 or more, then replace the HMU within 100 HMU
operating hours after the effective date of this AD;
(iii) Thereafter, replace the HMU at every 1,200 HMU operating
hours.
(f) Definition
For the purpose of this AD, HMU operating hours or C2 cycles are
defined as operating hours or C2 cycles since new, since overhaul,
or since incorporation of Turbomeca S.A. Service Bulletin (SB) No.
292 73 2105, Version B, dated December 16, 2010, or earlier version,
or Turbomeca S.A. Mandatory SB (MSB) No. 292 73 2818, Version D,
dated June 24, 2013, or earlier version.
(g) Optional Terminating Action
Incorporation of Turbomeca S.A. SB No. 292 73 2157, Version C,
dated July 17, 2013, or earlier version, is terminating action to
the replacement and repetitive inspection requirements of this AD.
(h) Credit for Previous Actions
If you performed the actions required by paragraphs (e)(1) or
(e)(2) of this AD using an earlier version of Turbomeca S.A. MSB No.
292 73 2818, Version D, dated June 24, 2013, you met the
requirements of this AD. However, you must still repetitively
replace the HMU as required by paragraphs (e)(1)(iii) and
(e)(2)(iii) of this AD.
(i) Alternative Methods of Compliance (AMOCs)
The Manager, Engine Certification Office, FAA, may approve AMOCs
to this AD. Use the procedures found in 14 CFR 39.19 to make your
request.
(j) Related Information
(1) For more information about this AD, contact James Gray,
Aerospace Engineer, Engine Certification Office, FAA, Engine &
Propeller Directorate, 12 New England Executive Park, Burlington, MA
01803; phone: 781-238-7742; fax: 781-238-7199; email:
[email protected].
(2) Refer to MCAI European Aviation Safety Agency AD 2013-0171,
dated July 30, 2013. You may examine the MCAI in the AD docket on
the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-
2007-27009-0015.
(3) Turbomeca S.A. MSB No. 292 73 2818, Version D, dated June
24, 2013, Turbomeca S.A. SB No. 292 73 2157, Version C, dated July
17, 2013, and Turbomeca S.A. SB No.
[[Page 19814]]
292 73 2105, Version B, dated December 16, 2010, which are not
incorporated by reference in this AD, can be obtained from Turbomeca
S.A. using the contact information in paragraph (j)(4) of this AD.
(4) For service information identified in this AD, contact
Turbomeca, S.A., 40220 Tarnos, France; phone: 33 (0)5 59 74 40 00;
telex: 570 042; fax: 33 (0)5 59 74 45 1.
(5) 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.
(k) Material Incorporated by Reference
None.
Issued in Burlington, Massachusetts, on April 2, 2014.
Colleen M. D'Alessandro,
Assistant Directorate Manager, Engine & Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2014-08008 Filed 4-9-14; 8:45 am]
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