Airworthiness Directives; Turbomeca S.A. Turboshaft Engines, 32195-32197 [2014-12974]
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Federal Register / Vol. 79, No. 107 / Wednesday, June 4, 2014 / Proposed Rules
32195
V. B. CATEGORIES AND REGULATIONS ABOUT WHICH NCUA WILL SEEK COMMENT LATER—Continued
Category
Subject
8. Money Laundering ..............................
Report of crimes or suspected crimes ..................................
Bank Secrecy Act ..................................................................
Liquidation (involuntary and voluntary) .................................
Uniform rules of practice and procedure ...............................
Local rules of practice and procedure ...................................
Lending ..................................................................................
Investments ...........................................................................
Supervisory committee audit .................................................
Security programs .................................................................
Guidelines for safeguarding member information and responding to unauthorized access to member information.
Records preservation program and record retention appendix.
Appraisals ..............................................................................
Examination ...........................................................................
Liquidity and contingency funding plans ...............................
Regulations codified elsewhere in NCUA’s regulations as
applying to federal credit unions that also apply to federally insured state-chartered credit unions.
9. Rules of Procedure .............................
10. Safety and Soundness .....................
By the National Credit Union
Administration Board on May 22, 2014.
Gerard Poliquin,
Secretary of the Board.
[FR Doc. 2014–12739 Filed 6–3–14; 8:45 am]
BILLING CODE 7535–01–P
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
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
We propose to adopt a new
airworthiness directive (AD) 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. This proposed
AD was prompted by reports of
uncommanded in-flight shutdowns on
Turbomeca S.A. Arriel 1 and Arriel 2
engines following rupture of the 41tooth gear forming part of the 41/23tooth bevel gear located in the engine
accessory gearbox (AGB). 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 proposed AD
would also require repetitive vibration
checks of the engine AGB for all Arriel
1 and Arriel 2 engines at every engine
ehiers on DSK2VPTVN1PROD with PROPOSALS
SUMMARY:
VerDate Mar<15>2010
14:53 Jun 03, 2014
Jkt 232001
Regulation cite
shop visit. 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 August 4, 2014.
ADDRESSES: You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://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 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 https://
www.regulations.gov by searching for
and locating Docket No. FAA–2014–
0164; 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
mandatory continuing airworthiness
PO 00000
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CFR
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CFR
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CFR
CFR
CFR
CFR
CFR
748.1.
748.2.
709 and 710.
747, subpart A.
747, subpart B.
701.21.
703.
715.
748.0.
748, Appendices A and B.
12 CFR 749.
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722.
741.1.
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741, subpart B.
information (MCAI), the regulatory
evaluation, any comments received, and
other information. The street address for
the Docket Operations 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: mark.riley@faa.gov.
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 based on those comments.
We will post all comments we
receive, without change, to https://
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.
Discussion
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, has issued EASA AD 2014–
0036, dated February 11, 2014 (referred
E:\FR\FM\04JNP1.SGM
04JNP1
32196
Federal Register / Vol. 79, No. 107 / Wednesday, June 4, 2014 / Proposed Rules
to herein after as ‘‘MCAI’’), to correct an
unsafe condition for the specified
products. The MCAI states:
Several cases of uncommanded in-flight
shut-down (IFSD) have been reported on
ARRIEL 1 or ARRIEL 2 engines following
rupture of the 41-tooth gear forming part of
the 41/23 tooth bevel gear located in the
accessory gearbox (AGB) within engine
module M01.
Results of subsequent investigations
showed that the meshing quality of the bevel
gear may have contributed to tooth rupture.
The rupture of the AGB 41-tooth gear may
lead to loss of driving of equipment essential
to engine operation.
This condition if not detected and
corrected, could lead to an uncommanded
engine in-flight shut-down and may
ultimately lead to an emergency landing.
We are proposing an initial one-time
vibration check of the engine AGB on
certain higher risk Arriel 1 and Arriel 2
model engines. We are also proposing
repetitive vibration checks of the engine
AGB for all Arriel 1 and Arriel 2 engines
at every engine shop visit. You may
examine the MCAI in the AD docket on
the Internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2014–
0164.
Relevant Service Information
Turbomeca S.A. has issued
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 correcting the unsafe
condition described in the MCAI.
ehiers on DSK2VPTVN1PROD with PROPOSALS
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 and service information
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 vibration
checks of the 41/23-tooth bevel gear
assembly of the AGB on certain
Turbomeca S.A. Arriel 1 and Arriel 2
model turboshaft engines and, if a
discrepancy is found, replacement of
the AGB with a part eligible for
installation.
VerDate Mar<15>2010
14:53 Jun 03, 2014
Jkt 232001
Costs of Compliance
We estimate that this proposed AD
affects 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 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),
(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.
PO 00000
Frm 00025
Fmt 4702
Sfmt 4702
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.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
■
Turbomeca S.A.: Docket No. FAA–2014–
0164; Directorate Identifier 2014–NE–
02–AD.
(a) Comments Due Date
We must receive comments by August 4,
2014.
(b) Affected ADs
None.
(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) Reason
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 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) Actions and Compliance
Unless already done, do the following.
(1) For all Turbomeca S.A. Arriel 1B, 1D,
1D1, 2B, and 2B1 turboshaft engines, perform
a one-time vibration check of the AGB 41/23tooth 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. 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.
(ii) For all Turbomeca S.A. Arriel 2B and
2B1engines, except those engines with an
AGB installed with a S/N listed in Figure 1
of Turbomeca MSB No. 292 72 2849, Version
B, dated November 25, 2013, use paragraphs
E:\FR\FM\04JNP1.SGM
04JNP1
Federal Register / Vol. 79, No. 107 / Wednesday, June 4, 2014 / Proposed Rules
6.A. through 6.C. of Turbomeca S.A. MSB
No. 292 72 2849, Version B, dated November
25, 2013, to perform the vibration check. 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. Guidance on performing the
vibration check during an engine shop visit
can be found in the service information listed
in paragraph (i)(3) in the Related Information
section.
(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 purposes 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.
ehiers on DSK2VPTVN1PROD with PROPOSALS
(h) 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.
(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: mark.riley@faa.gov.
(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 https://
www.regulations.gov by searching for and
locating it in Docket No. FAA–2014–0164.
(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 Technical Instruction (TI) No. 292 72
0839, Version E, dated February 20, 2014;
Arriel 1 TI No. 292 72 0840, dated November
29, 2013; Arriel 2 TI No. 292 72 2849,
Version E, dated February 20, 2014; and
VerDate Mar<15>2010
14:53 Jun 03, 2014
Jkt 232001
Arriel 2 TI No. 292 72 2850, dated November
29, 2013, provide detailed instructions on
performing the one-time vibration check for
Arriel 1 and Arriel 2 engines, respectively.
Turbomeca Engine Test Bed Acceptance Test
Specifications CCT No. 0292009400, Version
T; CCT No. 0292019400, Version R; CCT No.
0292019690, Version I; CCT No. 029201530,
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 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
May 28, 2014.
Colleen M. D’Alessandro,
Assistant Directorate Manager, Engine &
Propeller Directorate, Aircraft Certification
Service.
[FR Doc. 2014–12974 Filed 6–3–14; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2013–0072; Directorate
Identifier 2013–NE–04–AD]
RIN 2120–AA64
Airworthiness Directives; Pratt &
Whitney Division Turbofan Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
We propose to supersede
airworthiness directive (AD) 2013–15–
09, which applies to all Pratt & Whitney
Division (PW) PW4074, PW4074D,
PW4077, PW4077D, PW4084D,
PW4090, and PW4090–3 turbofan
engine models with certain second-stage
high-pressure turbine (HPT) air seals,
installed. AD 2013–15–09 currently
requires initial and repetitive
inspections for cracks in second-stage
HPT air seals. Since we issued AD
SUMMARY:
PO 00000
Frm 00026
Fmt 4702
Sfmt 4702
32197
2013–15–09, we received reports of
cracking in the original location on two
additional part numbers (P/Ns) as well
as reports of through-cracks in a new
location in the second-stage HPT air
seal. PW has developed a redesigned
second-stage HPT air seal that addresses
the cracking condition in both locations.
This proposed AD would expand the
applicability of AD 2013–15–09 to
include additional P/Ns, require
replacement of the mating hardware if
the second-stage HPT air seal is found
with a through-crack, and add
mandatory terminating action to the
repetitive inspections. We are proposing
this AD to prevent failure of the secondstage HPT air seal, which could lead to
uncontained engine failure and damage
to the airplane.
DATES: We must receive comments on
this proposed AD by August 4, 2014.
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
https://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 proposed AD, contact Pratt &
Whitney Division, 400 Main St., East
Hartford, CT 06108; phone: (860) 565–
8770; fax: (860) 565–4503. 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 https://
www.regulations.gov by searching for
and locating Docket No. FAA–2013–
0072; 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
regulatory evaluation, any comments
received, and other information. The
street 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.
E:\FR\FM\04JNP1.SGM
04JNP1
]]>Agencies
[Federal Register Volume 79, Number 107 (Wednesday, June 4, 2014)]
[Proposed Rules]
[Pages 32195-32197]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2014-12974]
=======================================================================
-----------------------------------------------------------------------
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).
-----------------------------------------------------------------------
SUMMARY: We propose to adopt a new airworthiness directive (AD) 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. This
proposed 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). 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 proposed AD would also
require repetitive vibration checks of the engine AGB for all Arriel 1
and Arriel 2 engines at every engine shop visit. 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 August 4, 2014.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://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 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 https://www.regulations.gov by searching for and locating Docket No. FAA-2014-
0164; 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 mandatory continuing airworthiness
information (MCAI), the regulatory evaluation, any comments received,
and other information. The street address for the Docket Operations
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: mark.riley@faa.gov.
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 based on those comments.
We will post all comments we receive, without change, to https://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.
Discussion
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
AD 2014-0036, dated February 11, 2014 (referred
[[Page 32196]]
to herein after as ``MCAI''), to correct an unsafe condition for the
specified products. The MCAI states:
Several cases of uncommanded in-flight shut-down (IFSD) have
been reported on ARRIEL 1 or ARRIEL 2 engines following rupture of
the 41-tooth gear forming part of the 41/23 tooth bevel gear located
in the accessory gearbox (AGB) within engine module M01.
Results of subsequent investigations showed that the meshing
quality of the bevel gear may have contributed to tooth rupture.
The rupture of the AGB 41-tooth gear may lead to loss of driving
of equipment essential to engine operation.
This condition if not detected and corrected, could lead to an
uncommanded engine in-flight shut-down and may ultimately lead to an
emergency landing.
We are proposing an initial one-time vibration check of the engine AGB
on certain higher risk Arriel 1 and Arriel 2 model engines. We are also
proposing repetitive vibration checks of the engine AGB for all Arriel
1 and Arriel 2 engines at every engine shop visit. You may examine the
MCAI in the AD docket on the Internet at https://www.regulations.gov by
searching for and locating Docket No. FAA-2014-0164.
Relevant Service Information
Turbomeca S.A. has issued 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 correcting the unsafe condition described in the MCAI.
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 and service information
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 vibration checks of the 41/23-
tooth bevel gear assembly of the AGB on certain Turbomeca S.A. Arriel 1
and Arriel 2 model turboshaft engines and, if a discrepancy is found,
replacement of the AGB with a part eligible for installation.
Costs of Compliance
We estimate that this proposed AD affects 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 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),
(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 adding the following new airworthiness
directive (AD):
Turbomeca S.A.: Docket No. FAA-2014-0164; Directorate Identifier
2014-NE-02-AD.
(a) Comments Due Date
We must receive comments by August 4, 2014.
(b) Affected ADs
None.
(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) Reason
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 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) Actions and Compliance
Unless already done, do the following.
(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.
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.
(ii) For all Turbomeca S.A. Arriel 2B and 2B1engines, except
those engines with an AGB installed with a S/N listed in Figure 1 of
Turbomeca MSB No. 292 72 2849, Version B, dated November 25, 2013,
use paragraphs
[[Page 32197]]
6.A. through 6.C. of Turbomeca S.A. MSB No. 292 72 2849, Version B,
dated November 25, 2013, to perform the vibration check. 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. Guidance on
performing the vibration check during an engine shop visit can be
found in the service information listed in paragraph (i)(3) in the
Related Information section.
(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 purposes 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
to this AD. Use the procedures found in 14 CFR 39.19 to make your
request.
(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:
mark.riley@faa.gov.
(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 https://www.regulations.gov by searching for and locating it in Docket No.
FAA-2014-0164.
(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 Technical Instruction (TI) No. 292 72
0839, Version E, dated February 20, 2014; Arriel 1 TI No. 292 72
0840, 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, dated
November 29, 2013, provide detailed instructions on performing the
one-time vibration check for Arriel 1 and Arriel 2 engines,
respectively. Turbomeca Engine Test Bed Acceptance Test
Specifications CCT No. 0292009400, Version T; CCT No. 0292019400,
Version R; CCT No. 0292019690, Version I; CCT No. 029201530, 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 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 May 28, 2014.
Colleen M. D'Alessandro,
Assistant Directorate Manager, Engine & Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2014-12974 Filed 6-3-14; 8:45 am]
BILLING CODE 4910-13-P
