80_FR_73373 80 FR 73147 - Airworthiness Directives; Turbomeca S.A. Turboshaft Engines

80 FR 73147 - Airworthiness Directives; Turbomeca S.A. Turboshaft Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 226 (November 24, 2015)

Page Range73147-73148
FR Document2015-29748

We propose to adopt a new airworthiness directive (AD) for certain Turbomeca S.A. Arriel 1E2 turboshaft engines. This proposed AD was prompted by reports of uncommanded in-flight shutdowns (IFSDs). This proposed AD would require removing the tachometer box on affected engines. We are proposing this AD to prevent failure of the tachometer box, which could lead to failure of the engine, IFSD, and loss of control of the helicopter.

Federal Register, Volume 80 Issue 226 (Tuesday, November 24, 2015)
[Federal Register Volume 80, Number 226 (Tuesday, November 24, 2015)]
[Proposed Rules]
[Pages 73147-73148]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-29748]


========================================================================
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.

========================================================================


Federal Register / Vol. 80, No. 226 / Tuesday, November 24, 2015 / 
Proposed Rules

[[Page 73147]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-4070; Directorate Identifier 2015-NE-31-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 
certain Turbomeca S.A. Arriel 1E2 turboshaft engines. This proposed AD 
was prompted by reports of uncommanded in-flight shutdowns (IFSDs). 
This proposed AD would require removing the tachometer box on affected 
engines. We are proposing this AD to prevent failure of the tachometer 
box, which could lead to failure of the engine, IFSD, and loss of 
control of the helicopter.

DATES: We must receive comments on this proposed AD by January 25, 
2016.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     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; 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-2015-
4070; 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 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: Philip Haberlen, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 12 
New England Executive Park, Burlington, MA 01803; phone: 781-238-7770; 
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-2015-4070; 
Directorate Identifier 2015-NE-31-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this NPRM. We will 
consider all comments received by the closing date and may amend this 
NPRM 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 NPRM.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD 2015-0175, dated August 24, 2015 (referred to hereinafter as ``the 
MCAI''), to correct an unsafe condition for the specified products. The 
MCAI states:

    There have been reports of Arriel 1E2 engines having experienced 
an uncommanded in-flight shut-down (IFSD) due to an untimely 
activation of the tachometer box shut-off system which was activated 
by the power turbine monitoring function of the tachometer box.
    This condition, if not corrected, could potentially lead to 
further cases of IFSD, possibly resulting in a forced landing.

    You may obtain further information by examining the MCAI in the AD 
docket on the Internet at http://www.regulations.gov by searching for 
and locating Docket No. FAA-2015-4070.

Related Service Information

    Turbomeca S.A. has issued Mandatory Service Bulletin No. 292 77 
0844, Version B, dated July 6, 2015. The service information describes 
procedures for removing pre-TU 369 tachometer boxes. This service 
information is reasonably available because the interested parties have 
access to it through their normal course of business or by the means 
identified in the ADDRESSES section of this NPRM.

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 NPRM would require removing the pre-TU 369 tachometer box 
from the engine.

Costs of Compliance

    We estimate that this proposed AD affects 200 engines installed on 
helicopters of U.S. registry. We also estimate that it would take about 
3 hours per engine to comply with 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 $51,000.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue

[[Page 73148]]

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-2015-4070; Directorate Identifier 
2015-NE-31-AD.

(a) Comments Due Date

    We must receive comments by January 25, 2016.

(b) Affected ADs

    None.

(c) Applicability

    (1) This AD applies to Turbomeca S.A. Arriel 1E2 turboshaft 
engines with tachometer boxes with the following part number (P/N) 
and serial number (S/N) combinations:
    (i) P/N 9580116170--all S/Ns
    (ii) P/N 9580116260--all S/Ns
    (iii) P/N 9580116900--all S/Ns
    (iv) P/N 9580117110--all S/Ns
    (v) P/N 9580117550--all S/Ns 1499 and below with or without 
suffix letters and all S/Ns 1500 and above that do not contain the 
suffix letters EL.
    (2) This AD applies only to Turbomeca S.A. Arriel 1E2 turboshaft 
engines with tachometer boxes identified in paragraph (c)(1) of this 
AD that also have installed electrical connectors labeled as P10106, 
P10098, and P10108 or P11F, P13F, and P15F.

(d) Reason

    This AD was prompted by reports of uncommanded in-flight 
shutdowns (IFSDs). We are issuing this AD to prevent failure of the 
tachometer box, which could lead to failure of the engine, IFSD, and 
loss of control of the helicopter.

(e) Actions and Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) Within 1,600 flight hours after the effective date of this 
AD, remove the affected tachometer box from the engine.
    (2) Reserved.

(f) Credit for Previous Action

    You may take credit for the action required by paragraph (e) of 
this AD if you performed the action before the effective date of 
this AD in accordance with Turbomeca S.A. MSB 292 77 0844, Version 
A, dated March 4, 2015 or earlier version.

(g) 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].

(h) Related Information

    (1) For more information about this AD, contact Philip Haberlen, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803; phone: 781-238-7770; fax: 781-238-7199; email: 
[email protected].
    (2) Refer to MCAI European Aviation Safety Agency AD 2015-0175, 
dated August 24, 2015, which includes Mandatory Service Bulletin No. 
292 77 0844, Version B, dated July 6, 2015, for related information. 
You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov by searching for and locating it in Docket No. 
FAA-2015-4070.
    (3) 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 November 12, 2015.
Colleen M. D'Alessandro,
Directorate Manager, Engine & Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2015-29748 Filed 11-23-15; 8:45 am]
BILLING CODE 4910-13-P



                                                                                                                                                                                                      73147

                                                    Proposed Rules                                                                                                Federal Register
                                                                                                                                                                  Vol. 80, No. 226

                                                                                                                                                                  Tuesday, November 24, 2015



                                                    This section of the FEDERAL REGISTER                    information on the availability of this                 There have been reports of Arriel 1E2
                                                    contains notices to the public of the proposed          material at the FAA, call 781–238–7125.               engines having experienced an
                                                    issuance of rules and regulations. The                                                                        uncommanded in-flight shut-down (IFSD)
                                                    purpose of these notices is to give interested          Examining the AD Docket                               due to an untimely activation of the
                                                    persons an opportunity to participate in the              You may examine the AD docket on                    tachometer box shut-off system which was
                                                    rule making prior to the adoption of the final                                                                activated by the power turbine monitoring
                                                                                                            the Internet at http://                               function of the tachometer box.
                                                    rules.
                                                                                                            www.regulations.gov by searching for                    This condition, if not corrected, could
                                                                                                            and locating Docket No. FAA–2015–                     potentially lead to further cases of IFSD,
                                                    DEPARTMENT OF TRANSPORTATION                            4070; or in person at the Docket                      possibly resulting in a forced landing.
                                                                                                            Operations office between 9 a.m. and 5
                                                                                                                                                                    You may obtain further information
                                                    Federal Aviation Administration                         p.m., Monday through Friday, except
                                                                                                                                                                  by examining the MCAI in the AD
                                                                                                            Federal holidays. The AD docket
                                                                                                                                                                  docket on the Internet at http://
                                                    14 CFR Part 39                                          contains this proposed AD, the
                                                                                                                                                                  www.regulations.gov by searching for
                                                                                                            mandatory continuing airworthiness
                                                    [Docket No. FAA–2015–4070; Directorate                                                                        and locating Docket No. FAA–2015–
                                                                                                            information (MCAI), the regulatory
                                                    Identifier 2015–NE–31–AD]                                                                                     4070.
                                                                                                            evaluation, any comments received, and
                                                    RIN 2120–AA64                                           other information. The address for the                Related Service Information
                                                                                                            Docket Office (phone: 800–647–5527) is                  Turbomeca S.A. has issued
                                                    Airworthiness Directives; Turbomeca                     in the ADDRESSES section. Comments
                                                    S.A. Turboshaft Engines                                                                                       Mandatory Service Bulletin No. 292 77
                                                                                                            will be available in the AD docket                    0844, Version B, dated July 6, 2015. The
                                                    AGENCY: Federal Aviation                                shortly after receipt.                                service information describes
                                                    Administration (FAA), DOT.                              FOR FURTHER INFORMATION CONTACT:                      procedures for removing pre-TU 369
                                                    ACTION: Notice of proposed rulemaking                   Philip Haberlen, Aerospace Engineer,                  tachometer boxes. This service
                                                    (NPRM).                                                 Engine Certification Office, FAA, Engine              information is reasonably available
                                                                                                            & Propeller Directorate, 12 New England               because the interested parties have
                                                    SUMMARY:    We propose to adopt a new                   Executive Park, Burlington, MA 01803;                 access to it through their normal course
                                                    airworthiness directive (AD) for certain                phone: 781–238–7770; fax: 781–238–                    of business or by the means identified
                                                    Turbomeca S.A. Arriel 1E2 turboshaft                    7199; email: philip.haberlen@faa.gov.                 in the ADDRESSES section of this NPRM.
                                                    engines. This proposed AD was                           SUPPLEMENTARY INFORMATION:
                                                    prompted by reports of uncommanded                                                                            FAA’s Determination and Requirements
                                                    in-flight shutdowns (IFSDs). This                       Comments Invited                                      of This Proposed AD
                                                    proposed AD would require removing                         We invite you to send any written                    This product has been approved by
                                                    the tachometer box on affected engines.                 relevant data, views, or arguments about              the aviation authority of France, and is
                                                    We are proposing this AD to prevent                     this proposed AD. Send your comments                  approved for operation in the United
                                                    failure of the tachometer box, which                    to an address listed under the                        States. Pursuant to our bilateral
                                                    could lead to failure of the engine, IFSD,              ADDRESSES section. Include ‘‘Docket No.               agreement with the European
                                                    and loss of control of the helicopter.                  FAA–2015–4070; Directorate Identifier                 Community, EASA has notified us of
                                                    DATES: We must receive comments on                      2015–NE–31–AD’’ at the beginning of                   the unsafe condition described in the
                                                    this proposed AD by January 25, 2016.                   your comments. We specifically invite                 MCAI and service information
                                                    ADDRESSES: You may send comments by                     comments on the overall regulatory,                   referenced above. We are proposing this
                                                    any of the following methods:                           economic, environmental, and energy                   AD because we evaluated all
                                                       • Federal eRulemaking Portal: Go to                  aspects of this NPRM. We will consider                information provided by EASA and
                                                    http://www.regulations.gov. Follow the                  all comments received by the closing                  determined the unsafe condition exists
                                                    instructions for submitting comments.                   date and may amend this NPRM based                    and is likely to exist or develop on other
                                                       • Mail: Docket Management Facility,                  on those comments.                                    products of the same type design. This
                                                    U.S. Department of Transportation, 1200                    We will post all comments we                       NPRM would require removing the pre-
                                                    New Jersey Avenue SE., West Building                    receive, without change, to http://                   TU 369 tachometer box from the engine.
                                                    Ground Floor, Room W12–140,                             www.regulations.gov, including any
                                                                                                            personal information you provide. We                  Costs of Compliance
                                                    Washington, DC 20590–0001.
                                                       • Hand Delivery: Deliver to Mail                     will also post a report summarizing each                 We estimate that this proposed AD
                                                    address above between 9 a.m. and 5                      substantive verbal contact with FAA                   affects 200 engines installed on
                                                    p.m., Monday through Friday, except                     personnel concerning this NPRM.                       helicopters of U.S. registry. We also
                                                    Federal holidays.                                                                                             estimate that it would take about 3
                                                       • Fax: 202–493–2251.                                 Discussion
mstockstill on DSK4VPTVN1PROD with PROPOSALS




                                                                                                                                                                  hours per engine to comply with this
                                                       For service information identified in                  The European Aviation Safety Agency                 proposed AD. The average labor rate is
                                                    this proposed AD, contact Turbomeca                     (EASA), which is the Technical Agent                  $85 per hour. Based on these figures, we
                                                    S.A., 40220 Tarnos, France; phone: 33                   for the Member States of the European                 estimate the cost of this proposed AD on
                                                    (0)5 59 74 40 00; fax: 33 (0)5 59 74 45                 Community, has issued EASA AD 2015–                   U.S. operators to be $51,000.
                                                    15. You may view this service                           0175, dated August 24, 2015 (referred to
                                                    information at the FAA, Engine &                        hereinafter as ‘‘the MCAI’’), to correct an           Authority for This Rulemaking
                                                    Propeller Directorate, 12 New England                   unsafe condition for the specified                      Title 49 of the United States Code
                                                    Executive Park, Burlington, MA. For                     products. The MCAI states:                            specifies the FAA’s authority to issue


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                                                    73148               Federal Register / Vol. 80, No. 226 / Tuesday, November 24, 2015 / Proposed Rules

                                                    rules on aviation safety. Subtitle I,                   § 39.13   [Amended]                                   phone: 781–238–7770; fax: 781–238–7199;
                                                    section 106, describes the authority of                 ■ 2. The FAA amends § 39.13 by adding                 email: philip.haberlen@faa.gov.
                                                    the FAA Administrator. ‘‘Subtitle VII:                  the following new airworthiness                          (2) Refer to MCAI European Aviation
                                                                                                                                                                  Safety Agency AD 2015–0175, dated August
                                                    Aviation Programs,’’ describes in more                  directive (AD):
                                                                                                                                                                  24, 2015, which includes Mandatory Service
                                                    detail the scope of the Agency’s                        Turbomeca S.A.: Docket No. FAA–2015–                  Bulletin No. 292 77 0844, Version B, dated
                                                    authority.                                                  4070; Directorate Identifier 2015–NE–             July 6, 2015, for related information. You
                                                       We are issuing this rulemaking under                     31–AD.                                            may examine the MCAI in the AD docket on
                                                    the authority described in ‘‘Subtitle VII,              (a) Comments Due Date                                 the Internet at http://www.regulations.gov by
                                                    Part A, Subpart III, Section 44701:                                                                           searching for and locating it in Docket No.
                                                                                                              We must receive comments by January 25,             FAA–2015–4070.
                                                    General requirements.’’ Under that                      2016.
                                                    section, Congress charges the FAA with                                                                           (3) You may view this service information
                                                                                                            (b) Affected ADs                                      at the FAA, Engine & Propeller Directorate,
                                                    promoting safe flight of civil aircraft in                                                                    12 New England Executive Park, Burlington,
                                                    air commerce by prescribing regulations                   None.                                               MA. For information on the availability of
                                                    for practices, methods, and procedures                  (c) Applicability                                     this material at the FAA, call 781–238–7125.
                                                    the Administrator finds necessary for
                                                                                                               (1) This AD applies to Turbomeca S.A.                Issued in Burlington, Massachusetts, on
                                                    safety in air commerce. This regulation                 Arriel 1E2 turboshaft engines with                    November 12, 2015.
                                                    is within the scope of that authority                   tachometer boxes with the following part              Colleen M. D’Alessandro,
                                                    because it addresses an unsafe condition                number (P/N) and serial number (S/N)
                                                    that is likely to exist or develop on                                                                         Directorate Manager, Engine & Propeller
                                                                                                            combinations:
                                                                                                                                                                  Directorate, Aircraft Certification Service.
                                                    products identified in this rulemaking                     (i) P/N 9580116170—all S/Ns
                                                                                                               (ii) P/N 9580116260—all S/Ns                       [FR Doc. 2015–29748 Filed 11–23–15; 8:45 am]
                                                    action.
                                                                                                               (iii) P/N 9580116900—all S/Ns                      BILLING CODE 4910–13–P
                                                    Regulatory Findings                                        (iv) P/N 9580117110—all S/Ns
                                                                                                               (v) P/N 9580117550—all S/Ns 1499 and
                                                      We determined that this proposed AD                   below with or without suffix letters and all          DEPARTMENT OF TRANSPORTATION
                                                    would not have federalism implications                  S/Ns 1500 and above that do not contain the
                                                    under Executive Order 13132. This                       suffix letters EL.                                    Federal Aviation Administration
                                                    proposed AD would not have a                               (2) This AD applies only to Turbomeca
                                                    substantial direct effect on the States, on             S.A. Arriel 1E2 turboshaft engines with               14 CFR Part 39
                                                    the relationship between the national                   tachometer boxes identified in paragraph
                                                    Government and the States, or on the                    (c)(1) of this AD that also have installed            [Docket No. FAA–2015–3753; Directorate
                                                    distribution of power and                               electrical connectors labeled as P10106,              Identifier 2015–NE–26–AD]
                                                                                                            P10098, and P10108 or P11F, P13F, and
                                                    responsibilities among the various                                                                            RIN 2120–AA64
                                                                                                            P15F.
                                                    levels of government.
                                                      For the reasons discussed above, I                    (d) Reason                                            Airworthiness Directives; Turbomeca
                                                    certify this proposed regulation:                          This AD was prompted by reports of                 S.A. Turboshaft Engines
                                                      (1) Is not a ‘‘significant regulatory                 uncommanded in-flight shutdowns (IFSDs).
                                                                                                            We are issuing this AD to prevent failure of          AGENCY: Federal Aviation
                                                    action’’ under Executive Order 12866,                                                                         Administration (FAA), DOT.
                                                                                                            the tachometer box, which could lead to
                                                      (2) Is not a ‘‘significant rule’’ under               failure of the engine, IFSD, and loss of              ACTION: Notice of proposed rulemaking
                                                    the DOT Regulatory Policies and                         control of the helicopter.                            (NPRM).
                                                    Procedures (44 FR 11034, February 26,
                                                                                                            (e) Actions and Compliance
                                                    1979),                                                                                                        SUMMARY:   We propose to adopt a new
                                                                                                               Comply with this AD within the
                                                      (3) Will not affect intrastate aviation                                                                     airworthiness directive (AD) for certain
                                                                                                            compliance times specified, unless already
                                                    in Alaska to the extent that it justifies               done.                                                 Turbomeca S.A. Arriel 2B, 2B1, 2C, 2C1,
                                                    making a regulatory distinction, and                       (1) Within 1,600 flight hours after the            2C2, 2D, 2E, 2S1, and 2S2 turboshaft
                                                      (4) Will not have a significant                       effective date of this AD, remove the affected        engines. This proposed AD was
                                                    economic impact, positive or negative,                  tachometer box from the engine.                       prompted by a report of an
                                                    on a substantial number of small entities                  (2) Reserved.                                      uncommanded in-flight shutdown of an
                                                    under the criteria of the Regulatory                    (f) Credit for Previous Action                        Arriel 2 engine caused by rupture of the
                                                    Flexibility Act.                                                                                              41-tooth gear, which forms part of the
                                                                                                               You may take credit for the action required
                                                                                                                                                                  bevel gear in the engine accessory
                                                    List of Subjects in 14 CFR Part 39                      by paragraph (e) of this AD if you performed
                                                                                                            the action before the effective date of this AD       gearbox (AGB). This proposed AD
                                                      Air transportation, Aircraft, Aviation                in accordance with Turbomeca S.A. MSB 292             would require inspection, and,
                                                    safety, Incorporation by reference,                     77 0844, Version A, dated March 4, 2015 or            depending on the results, removal of the
                                                    Safety.                                                 earlier version.                                      engine AGB. We are proposing this AD
                                                                                                                                                                  to prevent failure of the engine AGB,
                                                    The Proposed Amendment                                  (g) Alternative Methods of Compliance
                                                                                                            (AMOCs)                                               which could lead to in-flight shutdown,
                                                      Accordingly, under the authority                                                                            damage to the engine, and damage to the
                                                                                                               The Manager, Engine Certification Office,
                                                    delegated to me by the Administrator,                                                                         aircraft.
                                                                                                            FAA, may approve AMOCs for this AD. Use
                                                    the FAA proposes to amend 14 CFR part                   the procedures found in 14 CFR 39.19 to               DATES: We must receive comments on
mstockstill on DSK4VPTVN1PROD with PROPOSALS




                                                    39 as follows:                                          make your request. You may email your                 this proposed AD by January 25, 2016.
                                                                                                            request to: ANE-AD-AMOC@faa.gov.                      ADDRESSES: You may send comments by
                                                    PART 39—AIRWORTHINESS                                                                                         any of the following methods:
                                                                                                            (h) Related Information
                                                    DIRECTIVES                                                                                                      • Federal eRulemaking Portal: Go to
                                                                                                              (1) For more information about this AD,
                                                                                                            contact Philip Haberlen, Aerospace Engineer,          http://www.regulations.gov. Follow the
                                                    ■ 1. The authority citation for part 39                                                                       instructions for submitting comments.
                                                                                                            Engine Certification Office, FAA, Engine &
                                                    continues to read as follows:                           Propeller Directorate, 12 New England                   • Mail: Docket Management Facility,
                                                        Authority: 49 U.S.C. 106(g), 40113, 44701.          Executive Park, Burlington, MA 01803;                 U.S. Department of Transportation, 1200


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Document Created: 2015-12-14 14:08:41
Document Modified: 2015-12-14 14:08:41
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by January 25, 2016.
ContactPhilip Haberlen, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7770; fax: 781-238-7199; email: [email protected]
FR Citation80 FR 73147 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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