[Federal Register Volume 80, Number 23 (Wednesday, February 4, 2015)]
[Proposed Rules]
[Pages 6017-6019]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-02082]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2014-0164; Directorate Identifier 2014-NE-02-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 supersede airworthiness directive (AD) 2014-19-
05 that applies to all Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1,
1C2, 1D, 1D1, 1E2, 1K1, 1S, 1S1, 2B, 2B1, 2C, 2C1, 2C2, 2S1, and 2S2
turboshaft engines. AD 2014-19-05 requires an initial one-time
vibration check of the engine accessory gearbox (AGB) on certain higher
risk Arriel 1 and Arriel 2 model engines and repetitive vibration
checks for all Arriel 1 and Arriel 2 engines. Since we issued AD 2014-
19-05, we determined that a Technical Instruction (TI) number and a
Test Bed Acceptance Test Specifications number in the Actions and
Compliance and the Related Information sections are incorrect. This
proposed AD would correct these numbers. We are proposing this AD to
prevent failure of the engine AGB, which could lead to in-flight
shutdown and damage to the engine, which may result in damage to the
aircraft.
DATES: We must receive comments on this proposed AD by April 6, 2015.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
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.
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-
0164; 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 proposed AD, the mandatory continuing airworthiness
information, regulatory evaluation, any comments received, and other
information. The address for the Docket Office (phone: 800-647-5527) is
in the ADDRESSES section. Comments will be available in the AD docket
shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Mark Riley, Aerospace Engineer, Engine
Certification Office, FAA, Engine & Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; phone: 781-238-7758; 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-2014-0164;
Directorate Identifier 2014-NE-02-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 because of 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 we
receive about this proposed AD.
Discussion
On September 15, 2014, we issued AD 2014-19-05, Amendment 39-17973
(79 FR 59091, October 1, 2014), for all Turbomeca S.A. Arriel 1A1, 1A2,
1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, 1S1, 2B, 2B1, 2C, 2C1, 2C2,
2S1, and 2S2 turboshaft engines. AD 2014-19-05 requires an initial one-
time vibration check of the engine AGB on certain higher risk Arriel 1
and Arriel 2 model engines. AD 2014-19-05 also requires repetitive
vibration checks of the engine AGB for all Arriel 1 and Arriel 2
engines
[[Page 6018]]
at every engine shop visit. AD 2014-19-05 resulted from reports of
uncommanded in-flight shutdowns on Turbomeca S.A. Arriel 1 and Arriel 2
engines, following rupture of the 41-tooth gear forming part of the 41/
23-tooth bevel gear located in the engine AGB. We issued AD 2014-19-05
to prevent failure of the engine AGB, which could lead to in-flight
shutdown and damage to the engine, which may result in damage to the
aircraft.
Actions Since AD 2014-19-05 Was Issued
Since we issued AD 2014-19-05, Amendment 39-17973 (79 FR 59091,
October 1, 2014), we determined that a TI number and a Test Bed
Acceptance Test Specifications number in the Actions and Compliance and
the Related Information sections are incorrect. This proposed AD would
correct these numbers.
Relevant Service Information
We reviewed Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292
72 0839, Version B, dated November 25, 2013, and MSB No. 292 72 2849,
Version B, dated November 25, 2013. The service information describes
procedures for performing vibration checks of the engine AGB.
FAA's Determination
We are proposing this AD because we evaluated all the relevant
information and determined the unsafe condition described previously is
likely to exist or develop in other products of the same type design.
Proposed AD Requirements
This proposed AD would require an initial one-time vibration check
of the engine AGB on certain higher risk Arriel 1 and Arriel 2 model
engines. This AD also requires repetitive vibration checks of the
engine AGB for all Arriel 1 and Arriel 2 engines at every engine shop
visit.
Costs of Compliance
We estimate that this proposed AD would affect 1,268 engines
installed on aircraft of U.S. registry. We also estimate that it would
take about 4 hours per engine to comply with the inspection requirement
in this proposed AD. The average labor rate is $85 per hour. Based on
these figures, we estimate the cost of this proposed AD on U.S.
operators to be $431,120.
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 have 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 that the 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),
(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.
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
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)
2014-19-05, Amendment 39-17973 (79 FR 59091, October 1, 2014), and
adding the following new AD:
Turbomeca S.A.: Docket No. FAA-2014-0164; Directorate Identifier
2014-NE-02-AD.
(a) Comments Due Date
We must receive comments by April 6, 2015.
(b) Affected ADs
This AD supersedes AD 2014-19-05, Amendment 39-17973 (79 FR
59091, October 1, 2014).
(c) Applicability
This AD applies to all Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C,
1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, 1S1, 2B, 2B1, 2C, 2C1, 2C2, 2S1,
and 2S2 turboshaft engines.
(d) Unsafe Condition
This AD was prompted by reports of uncommanded in-flight
shutdowns on Turbomeca S.A. Arriel 1 and Arriel 2 engines following
rupture of the 41-tooth gear forming part of the 41/23-tooth bevel
gear located in the engine accessory gearbox (AGB). We are issuing
this AD to prevent failure of the engine AGB, which could lead to
in-flight shutdown and damage to the engine, which may result in
damage to the aircraft.
(e) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(1) For all Turbomeca S.A. Arriel 1B, 1D, 1D1, 2B, and 2B1
turboshaft engines, perform a one-time vibration check of the AGB
41/23-tooth bevel gear meshing within 32 months of the effective
date of this AD, as follows:
(i) For all Turbomeca S.A. Arriel 1B, 1D, and 1D1 engines,
except those engines with an AGB installed with a serial number (S/
N) listed in Figure 1 of Turbomeca S.A. Mandatory Service Bulletin
(MSB) No. 292 72 0839, Version B, dated November 25, 2013, use
paragraphs 6.A. through 6.C. of Turbomeca S.A. MSB No. 292 72 0839,
Version B, dated November 25, 2013, to perform the vibration check.
Turbomeca S.A. MSB No. 292 72 0839 refers to Turbomeca S.A. Arriel 1
Technical Instruction (TI) No. 292 72 0839, Version E, dated
February 20, 2014, and Turbomeca S.A. Arriel 1 TI No. 292 72 0840,
Version A, dated November 29, 2013, which you must also use to do
the vibration check.
(ii) The reporting requirements in paragraphs 6.A.(1)(c),
6.A.(2)(b), and 6.B.(1)(c) and the requirement to return module M01
in paragraph 6.B.(2)(b)2 of Turbomeca S.A. MSB No. 292 72 0839,
Version B, dated November 25, 2013, are not required by this AD.
(iii) For all Turbomeca S.A. Arriel 2B and 2B1engines, except
those engines with an AGB installed with an S/N listed in Figure 1
of Turbomeca S.A. MSB No. 292 72 2849, Version B, dated November 25,
2013, use paragraphs 6.A. through 6.C. of Turbomeca S.A. MSB No. 292
72 2849, Version B, dated November 25, 2013, to perform the
vibration
[[Page 6019]]
check. Turbomeca S.A. MSB No. 292 72 2849 refers to Turbomeca S.A.
Arriel 2 TI No. 292 72 2849, Version E, dated February 20, 2014, and
Turbomeca S.A. Arriel 2 TI No. 292 72 2850, Version A, dated
November 29, 2013, which you must also use to do the vibration
check.
(iv) The reporting requirements in paragraphs 6.A.(1)(c),
6.A.(2)(b), and 6.B.(1)(c), and the requirement to return module M01
in paragraph 6.B.(2)(b)2 of Turbomeca S.A. MSB No. 292 72 2849,
Version B, dated November 25, 2013, are not required by this AD.
(2) For all affected Turbomeca S.A. engines, during each engine
shop visit after the effective date of this AD, perform a vibration
check of the AGB 41/23-tooth bevel gear meshing.
(3) If the AGB does not pass the vibration check required by
paragraphs (e)(1) or (e)(2) of this AD, replace the AGB with a part
eligible for installation.
(f) Credit for Previous Action
If you performed a vibration check of the AGB before the
effective date of this AD using Turbomeca S.A. MSB No. 292 72 0839,
Version A, dated September 9, 2013; or MSB No. 292 72 2849, Version
A, dated September 9, 2013, or during an engine shop visit per
paragraph (e)(2) of this AD, you met the initial inspection
requirement of paragraph (e)(1) of this AD.
(g) Definition
For the purpose of this AD, an ``engine shop visit'' is the
induction of an engine into the shop for maintenance involving the
separation of pairs of major mating engine flanges. The separation
of engine flanges solely for the purpose of transportation without
subsequent engine maintenance does not constitute an engine shop
visit.
(h) Alternative Methods of Compliance (AMOCs)
The Manager, Engine Certification Office, FAA, may approve AMOCs
for this AD. Use the procedures found in 14 CFR 39.19 to make your
request. You may email your request to: [email protected].
(i) Related Information
(1) For more information about this AD, contact Mark Riley,
Aerospace Engineer, Engine Certification Office, FAA, Engine &
Propeller Directorate, 12 New England Executive Park, Burlington, MA
01803; phone: 781-238-7758; fax: 781-238-7199; email:
[email protected].
(2) Refer to MCAI European Aviation Safety Agency AD 2014-0036,
dated February 11, 2014, for related information. You may examine
the MCAI in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2014-0164-0003.
(3) Turbomeca S.A. MSB No. 292 72 0839, Version B, dated
November 25, 2013; and MSB No. 292 72 2849, Version B, dated
November 25, 2013, provide guidance on performing the one-time
vibration check. Arriel 1 TI No. 292 72 0839, Version E, dated
February 2014; Arriel 1 TI No. 292 72 0840, Version A, dated
November 29, 2013; Arriel 2 TI No. 292 72 2849, Version E, dated
February 20, 2014; and Arriel 2 TI No. 292 72 2850, Version A, dated
November 29, 2013, provide detailed instructions on performing the
one-time vibration check for Arriel 1 and Arriel 2 engines as
indicated. Turbomeca Engine Test Bed Acceptance Test Specifications
CCT No. 0292009400, Version T; CCT No. 0292019400, Version R; CCT
No. 0292019690, Version I; CCT No. 0292019530, Version K; CCT No.
0292019610, Version K; CCT No. 0292029450, Version J; CCT No.
0292029490, Version I; CCT No. 0292029440, Version I; CCT No.
0292029480, Version K; CCT No. 0292029520, Version H; CCT No.
0292029410, Version L; CCT No. 0292029530, Version H; or Turbomeca
ID No. 383952; or Turbomeca RTD No. X 292 65 327 2, provide
information on performing a vibration check during an engine shop
visit. These service documents, which are not incorporated by
reference in this AD, can be obtained from Turbomeca S.A. using the
contact information in paragraph (i)(4) of this proposed AD.
(4) 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.
(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.
Issued in Burlington, Massachusetts, on January 26, 2015.
Colleen M. D'Alessandro,
Assistant Directorate Manager, Engine & Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2015-02082 Filed 2-3-15; 8:45 am]
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