[Federal Register Volume 77, Number 238 (Tuesday, December 11, 2012)]
[Proposed Rules]
[Pages 73557-73558]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2012-29871]
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Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
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Federal Register / Vol. 77, No. 238 / Tuesday, December 11, 2012 /
Proposed Rules
[[Page 73557]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2012-1131; Directorate Identifier 2012-NE-34-AD]
RIN 2120-AA64
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2,
1K1, 1S, and 1S1 turboshaft engines. This proposed AD was prompted by a
finding that the engine's tachometer unit cycle counting feature is
unreliable. This proposed AD would require daily post-flight checks of
the engine tachometer's unit cycle counting feature. This proposed AD
would also require ground-run functional checks within every 1,000
operating hours. This proposed AD was prompted by detailed analysis and
review of the accuracy of the engine's tachometer cycle counting
feature. We are proposing this AD to prevent uncontained engine failure
and damage to the helicopter.
DATES: We must receive comments on this proposed AD by February 11,
2013.
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.
For service information identified in this proposed 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 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; 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 (phone: 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: Sanjana Murthy, Aerospace Engineer,
Engine Certification Office, FAA, Engine & Propeller Directorate, 12
New England Executive Park, Burlington, MA 01803; phone: 781-238-7750;
fax: 781-238-7199; email: [email protected].
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-2012-1131;
Directorate Identifier 2012-NE-34-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
AD 2012-0187, dated September 18, 2012 (referred to hereinafter as
``the MCAI''), to correct an unsafe condition for the specified
products. The MCAI states:
Following detailed analysis and review of in-service feedback
performed by Turbomeca on the Arriel 1 engines, the chapter 05-10
Airworthiness Limitation Section (ALS) of Arriel 1 Maintenance
Manuals has been updated in order to clarify the definition and
update the requirements relative to the cycle counting aid system
(modification introduced in production by Turbomeca modification
TU207 or TU243 and in-service, respectively, by Turbomeca Service
Bulletin (SB) 292 80 0190 or SB 292 80 0168), add associated
maintenance tasks, and modify the Power Turbine (PT) partial cycle
counting method.
The SBs referenced above introduced the tachometer. The tachometer's
cycle counting feature, in some instances, produced results
inconsistent with ground run checks. The inaccurate cycle counting
results of the tachometer can lead to exceeding life limits on critical
rotating parts, which can cause uncontained engine failure. Further
information may be obtained by examining the MCAI in the AD docket.
FAA's Determination and Requirements of This Proposed AD
This product has been approved by the aviation authority of France
and is approved for operation in the United States. Pursuant to our
bilateral agreement with the European Community, EASA has notified us
of the unsafe condition described in the MCAI 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. This proposed AD
would require daily post-flight checks of the engine tachometer's unit
cycle counting feature. This
[[Page 73558]]
proposed AD would also require ground-run functional checks within
every 1,000 operating hours.
Costs of Compliance
We estimate that this proposed AD would affect about 1,420 engines
installed in helicopters of U.S. registry. We also estimate that it
would take about 30 minutes per engine to perform a check of the
engine's tachometer unit cycle counting feature and that an average of
320 checks would be required per year. Based on the average annual
operating hours for an engine, a 1,000 operating hour functional check
would not be required for at least one year. The average labor rate is
$85 per hour. No parts would be required. Based on these figures, we
estimate the average total cost of the proposed AD on U.S. operators to
perform checks of the tachometer cycle counting unit for a year, is
$19,312,000.
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;
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:
Turbomeca S.A.: Docket No. FAA-2012-1131; Directorate Identifier
2012-NE-34-AD.
(a) Comments Due Date
We must receive comments by February 11, 2013.
(b) Affected Airworthiness Directives (ADs)
None.
(c) Applicability
This AD applies to Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1,
1C2, 1D, 1D1, 1E2, 1K1, 1S, and 1S1 turboshaft engines that have
incorporated Modification TU 207 or TU 243, or have incorporated
Turbomeca Service Bulletin (SB) No. 292 80 0168 or SB No. 292 80
0190.
(d) Reason
This AD was prompted by detailed analysis and review of the
accuracy of the engine's tachometer cycle counting feature. We are
issuing this AD to prevent uncontained engine failure and damage to
the helicopter.
(e) Actions and Compliance
(1) During the post flight maintenance inspection after the last
flight of each day, compare the cycles counted by the engine's
tachometer unit with the cycles counted by the primary counting
method.
(2) If the numbers are different, use the primary counting
method thereafter to determine all cycle counts. Do not use the
values from the tachometer unit cycle counting feature.
(3) If the engine tachometer cycle counting feature remains
accurate, then every 1,000 operating hours, perform a ground-run
functional check of the tachometer unit cycle counting feature. If
the counting feature fails the check, thereafter use only the
primary cycle counting method to count cycles.
(4) If the tachometer is replaced, follow instructions in
paragraphs (e)(1), (e)(2), and (e)(3) of this AD.
(f) Alternative Methods of Compliance (AMOCs)
The Manager, Engine Certification Office, may approve AMOCs for
this AD. Use the procedures found in 14 CFR 39.19 to make your
request.
(g) Related Information
(1) For more information about this AD, contact Sanjana Murthy,
Aerospace Engineer, Engine Certification Office, FAA, Engine &
Propeller Directorate, 12 New England Executive Park, Burlington, MA
01803; phone: 781-238-7750; fax: 781-238-7199; email:
[email protected].
(2) Refer to European Aviation Safety Agency AD 2012-0187, dated
September 18, 2012, and Turbomeca S.A. Service Bulletin (SB) No. 292
80 0168 and SB No. 292 80 0190, for related information.
(3) 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 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.
Issued in Burlington, Massachusetts, on December 3, 2012.
Colleen M. D'Alessandro,
Assistant Manager, Engine & Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2012-29871 Filed 12-10-12; 8:45 am]
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