Airworthiness Directives; Turbomeca S.A. Turboshaft Engines, 12834-12836 [2016-05465]

Download as PDF 12834 Federal Register / Vol. 81, No. 48 / Friday, March 11, 2016 / Proposed Rules hour. Parts would cost about $0 per engine. Based on these figures, we estimate the total cost of this proposed AD to U.S. operators to be $111,095. Our cost estimate is exclusive of possible warranty coverage. ■ Authority for This Rulemaking § 39.13 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 asabaliauskas on DSK3SPTVN1PROD with PROPOSALS 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, 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: VerDate Sep<11>2014 16:25 Mar 10, 2016 Jkt 238001 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. [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): Continental Motors, Inc. (Type Certificate previously held by Teledyne Continental Motors) Reciprocating Engines: Docket No. FAA–2016–0069; Directorate Identifier 2016–NE–01–AD. (a) Comments Due Date We must receive comments by May 10, 2016. (b) Affected ADs None. (c) Applicability This AD applies to Continental Motors, Inc. (CMI) TSIO–550–K, TSIOF–550–K, TSIO–550–C, TSIOF–550–D, and TSIO–550– N reciprocating engines with an engine serial number below 1012296 and an oil cooler cross fitting, part number AN918–1J, installed. (d) Unsafe Condition This AD was prompted by a report of an uncommanded in-flight shutdown (IFSD) resulting in injuries and significant airplane damage. We are issuing this AD to prevent failure of the oil cooler cross fitting and engine, IFSD and loss of the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) Within 12 months or 100 flight hours from the effective date of the AD, whichever occurs first, replace the oil cooler cross fitting, nipple, and bushing. Use the Action Required paragraphs III.1 through III.8 of CMI Critical Service Bulletin (CSB) No. CSB15– 7A, dated November 10, 2015 or the Action Required paragraphs III.1 through III.8 of CMI CSB No. CSB15–2C, dated November 9, 2015, to perform the replacement. (2) Reserved. (f) Credit for Previous Actions You may take credit for the replacement that is required by paragraph (e) of this AD, if the replacement was performed before the effective date of this AD using CMI CSB No. CSB15–2B, dated November 6, 2015 or earlier versions; or CSB No. CSB15–7, dated November 6, 2015. (g) Alternative Methods of Compliance (AMOCs) The Manager, Atlanta Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (h) Related Information (1) For more information about this AD, contact Scott Hopper, Aerospace Engineer, PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 Atlanta Aircraft Certification Office, FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: 404–474–5535; fax: 404–474– 5606; email: scott.hopper@faa.gov. (2) CMI CSB No. CSB15–7A, dated November 10, 2015 and CMI CSB No. CSB15–2C, dated November 9, 2015 can be obtained from CMI using the contact information in paragraph (h)(3) of this AD. (3) For service information identified in this AD, contact Continental Motors, Inc., 2039 Broad Street, Mobile, Alabama 36615; phone: 800–326–0089; Internet: http:// www.continentalmotors.aero. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. Issued in Burlington, Massachusetts, on March 2, 2016. Colleen M. D’Alessandro, Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2016–05467 Filed 3–10–16; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2015–8257; Directorate Identifier 2015–NE–36–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. MAKILA 2A and MAKILA 2A1 turboshaft engines. This proposed AD was prompted by two occurrences of crack initiation on a ferrule of the diffuser. This proposed AD would require repetitive diffuser inspections and replacement of those diffusers that fail inspection. We are proposing this AD to prevent rupture of the ferrule of the diffuser, which could result in engine fire and damage to the helicopter. DATES: We must receive comments on this proposed AD by May 10, 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 SUMMARY: E:\FR\FM\11MRP1.SGM 11MRP1 Federal Register / Vol. 81, No. 48 / Friday, March 11, 2016 / Proposed Rules 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) 05 59 74 40 00; fax: (33) 05 59 74 45 15. You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. 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– 8257; 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: Brian Kierstead, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; email: brian.kierstead@faa.gov; phone: 781– 238–7772; fax: 781–238–7199. SUPPLEMENTARY INFORMATION: asabaliauskas on DSK3SPTVN1PROD with PROPOSALS 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–2015–8257; Directorate Identifier 2015–NE–36–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD based on those comments. We will post all comments we receive, without change, to http:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA personnel concerning this proposed AD. VerDate Sep<11>2014 16:25 Mar 10, 2016 Jkt 238001 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– 0209, dated October 16, 2015 (referred to hereinafter as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: Two occurrences of crack initiation were reported on a ferrule of diffuser part number (P/N) 0298210100, which propagated and led to the ferrule rupture. The investigation shows in both cases that the ruptured ferrule contacted and punctured the main fuel supply line, resulting in a fuel leak. This condition, if not detected and corrected, could lead to an engine fire, consequently triggering an uncommanded engine in flight shut down, possibly resulting in an emergency landing. Prompted by these occurrences, Turbomeca published Mandatory Service Bulletin (MSB) No. 298 72 2832 to provide repetitive inspection instructions. This proposed AD would require repetitive inspections of the affected diffuser and removal of those diffusers that fail the required inspection. 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– 8257. Related Service Information Under 1 CFR Part 51 Turbomeca S.A. has issued Alert Mandatory Service Bulletin (MSB) No. A298 72 2832, Version B, dated October 12, 2015. The Alert MSB describes procedures for repetitive inspections of the affected diffuser and depending on findings, accomplishment of the corrective action(s). Turbomeca S.A. has issued Service Bulletin (SB) No. 298 72 2833, Version A, dated July 29, 2015. The SB identifies post-TU52 HP gas generator modules that have been released with a new ferrule after repair or overhaul in a Repair Center. When applying Alert Mandatory Service Bulletin (MSB) No. A298 72 2832, it is necessary to know if an HP gas generator module released by a Repair Center is equipped with a new ferrule. 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 PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 12835 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 repetitive inspections of the affected diffuser and depending on findings, accomplishment of the corrective action(s). Costs of Compliance We estimate that this proposed AD affects 10 engines installed on helicopters of U.S. registry. We also estimate that it would take about 2 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 $1,700. 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, E:\FR\FM\11MRP1.SGM 11MRP1 12836 Federal Register / Vol. 81, No. 48 / Friday, March 11, 2016 / Proposed Rules (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: 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ Turbomeca S.A.: Docket No. FAA–2015– 8257; Directorate Identifier 2015–NE– 36–AD. (a) Comments Due Date We must receive comments by May 10, 2016. (b) Affected ADs None. (c) Applicability This AD applies to Turbomeca S.A. MAKILA 2A and MAKILA 2A1 turboshaft engine models with a high-pressure (HP) gas generator module (M03) that has modification (mod) TU 52 installed. asabaliauskas on DSK3SPTVN1PROD with PROPOSALS (d) Reason This AD was prompted by two occurrences of crack initiation on a ferrule of the diffuser, which propagated and led to the ferrule rupture. We are issuing this AD to prevent rupture of the ferrule of the diffuser, which could result in engine fire and damage to the helicopter. (e) Actions and Compliance Comply with this AD within the compliance times specified, unless already done. (1) Borescope inspect the centrifugal diffuser ferrule, part number (P/N) 0298210100, prior to the ferrule accumulating 700 hours, time since new or time since replacement or within 30 hours from the effective date of this AD, whichever is later. Use Accomplishment Instructions, VerDate Sep<11>2014 16:25 Mar 10, 2016 Jkt 238001 (f) Credit for Previous Actions You may take credit for the actions required by paragraph (e) of this AD if you performed Turbomeca S.A. MSB No. 298 72 2832, Version A, dated September 3, 2015 before the effective date of this AD. (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: ANE-AD-AMOC@faa.gov. PART 39—AIRWORTHINESS DIRECTIVES § 39.13 paragraphs 2.4.1 through 2.4.2.2.1, of Turbomeca S.A. Alert Mandatory Service Bulletin (MSB) No. 298 72 2832, Version B, dated October 12, 2015, to do the borescope inspections required by this AD. (2) Repeat the borescope inspection required by this AD every 50 hours since last inspection. (3) If any crack, loss of contact between the ferrule and diffuser axial vane, or any contact between the injection manifold supply pipe and the diffuser ferrule is found, remove the diffuser case and replace the ferrule with a part eligible for installation. (h) Related Information (1) For more information about this AD, contact Brian Kierstead, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781–238– 7772; fax: 781–238–7199; email: brian.kierstead@faa.gov. (2) Refer to MCAI European Aviation Safety Agency AD 2015–0209, dated October 16, 2015, for more 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–2015–8257. (3) Turbomeca S.A. Alert MSB No. A298 72 2832, Version B, dated October 12, 2015, can be obtained from Turbomeca S.A., using the contact information in paragraph (h)(5) of this proposed AD. (4) Turbomeca S.A. Service Bulletin (SB) No. 298 72 2833, Version A, dated July 29, 2015, can be obtained from Turbomeca S.A., using the contact information in paragraph (h)(5) of this proposed AD. (5) For service information identified in this proposed AD, contact Turbomeca S.A., 40220 Tarnos, France; phone: (33) 05 59 74 40 00; fax: (33) 05 59 74 45 15. (6) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7125. Issued in Burlington, Massachusetts, on February 29, 2016. Colleen M. D’Alessandro, Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2016–05465 Filed 3–10–16; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2015–6033; Directorate Identifier 2015–SW–019–AD] RIN 2120–AA64 Airworthiness Directives; Airbus Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for Airbus Helicopters Model AS 365 N3 helicopters. This proposed AD would require inspecting the cabin and cockpit for labels, placards, or markings that provide jettison procedure instructions for cabin doors, removing any labels, placards, or markings that are in an incorrect location, and installing placards where they are missing. This proposed AD is prompted by the determination that placards had not been installed according to specifications on newly manufactured helicopters. The proposed actions are intended to provide exit procedures during an emergency. DATES: We must receive comments on this proposed AD by May 10, 2016. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Docket: Go to http://www.regulations.gov. Follow the online instructions for sending your comments electronically. • Fax: 202–493–2251. • Mail: Send comments to the U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590–0001. • Hand Delivery: Deliver to the ‘‘Mail’’ address between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. SUMMARY: 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– 6033; 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 European Aviation Safety Agency (EASA) AD, the economic evaluation, any comments received, and other E:\FR\FM\11MRP1.SGM 11MRP1

Agencies

[Federal Register Volume 81, Number 48 (Friday, March 11, 2016)]
[Proposed Rules]
[Pages 12834-12836]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-05465]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-8257; Directorate Identifier 2015-NE-36-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. MAKILA 2A and MAKILA 2A1 turboshaft engines. This 
proposed AD was prompted by two occurrences of crack initiation on a 
ferrule of the diffuser. This proposed AD would require repetitive 
diffuser inspections and replacement of those diffusers that fail 
inspection. We are proposing this AD to prevent rupture of the ferrule 
of the diffuser, which could result in engine fire and damage to the 
helicopter.

DATES: We must receive comments on this proposed AD by May 10, 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

[[Page 12835]]

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) 05 59 74 40 00; fax: 
(33) 05 59 74 45 15. You may view this service information at the FAA, 
Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 
01803. 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-
8257; 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: Brian Kierstead, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 
District Avenue, Burlington, MA 01803; email: brian.kierstead@faa.gov; 
phone: 781-238-7772; fax: 781-238-7199.

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-2015-8257; 
Directorate Identifier 2015-NE-36-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact 
with FAA personnel concerning this proposed AD.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD 2015-0209, dated October 16, 2015 (referred to hereinafter as ``the 
MCAI''), to correct an unsafe condition for the specified products. The 
MCAI states:

Two occurrences of crack initiation were reported on a ferrule of 
diffuser part number (P/N) 0298210100, which propagated and led to 
the ferrule rupture. The investigation shows in both cases that the 
ruptured ferrule contacted and punctured the main fuel supply line, 
resulting in a fuel leak. This condition, if not detected and 
corrected, could lead to an engine fire, consequently triggering an 
uncommanded engine in flight shut down, possibly resulting in an 
emergency landing. Prompted by these occurrences, Turbomeca 
published Mandatory Service Bulletin (MSB) No. 298 72 2832 to 
provide repetitive inspection instructions.

    This proposed AD would require repetitive inspections of the 
affected diffuser and removal of those diffusers that fail the required 
inspection. 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-2015-8257.

Related Service Information Under 1 CFR Part 51

    Turbomeca S.A. has issued Alert Mandatory Service Bulletin (MSB) 
No. A298 72 2832, Version B, dated October 12, 2015. The Alert MSB 
describes procedures for repetitive inspections of the affected 
diffuser and depending on findings, accomplishment of the corrective 
action(s).
    Turbomeca S.A. has issued Service Bulletin (SB) No. 298 72 2833, 
Version A, dated July 29, 2015. The SB identifies post-TU52 HP gas 
generator modules that have been released with a new ferrule after 
repair or overhaul in a Repair Center. When applying Alert Mandatory 
Service Bulletin (MSB) No. A298 72 2832, it is necessary to know if an 
HP gas generator module released by a Repair Center is equipped with a 
new ferrule.
    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 proposed AD would require repetitive inspections of the 
affected diffuser and depending on findings, accomplishment of the 
corrective action(s).

Costs of Compliance

    We estimate that this proposed AD affects 10 engines installed on 
helicopters of U.S. registry. We also estimate that it would take about 
2 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 $1,700.

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,

[[Page 12836]]

    (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-2015-8257; Directorate Identifier 
2015-NE-36-AD.

(a) Comments Due Date

    We must receive comments by May 10, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Turbomeca S.A. MAKILA 2A and MAKILA 2A1 
turboshaft engine models with a high-pressure (HP) gas generator 
module (M03) that has modification (mod) TU 52 installed.

(d) Reason

    This AD was prompted by two occurrences of crack initiation on a 
ferrule of the diffuser, which propagated and led to the ferrule 
rupture. We are issuing this AD to prevent rupture of the ferrule of 
the diffuser, which could result in engine fire and damage to the 
helicopter.

(e) Actions and Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) Borescope inspect the centrifugal diffuser ferrule, part 
number (P/N) 0298210100, prior to the ferrule accumulating 700 
hours, time since new or time since replacement or within 30 hours 
from the effective date of this AD, whichever is later. Use 
Accomplishment Instructions, paragraphs 2.4.1 through 2.4.2.2.1, of 
Turbomeca S.A. Alert Mandatory Service Bulletin (MSB) No. 298 72 
2832, Version B, dated October 12, 2015, to do the borescope 
inspections required by this AD.
    (2) Repeat the borescope inspection required by this AD every 50 
hours since last inspection.
    (3) If any crack, loss of contact between the ferrule and 
diffuser axial vane, or any contact between the injection manifold 
supply pipe and the diffuser ferrule is found, remove the diffuser 
case and replace the ferrule with a part eligible for installation.

(f) Credit for Previous Actions

    You may take credit for the actions required by paragraph (e) of 
this AD if you performed Turbomeca S.A. MSB No. 298 72 2832, Version 
A, dated September 3, 2015 before the effective date of this AD.

(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: ANE-AD-AMOC@faa.gov.

(h) Related Information

    (1) For more information about this AD, contact Brian Kierstead, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; 
phone: 781-238-7772; fax: 781-238-7199; email: 
brian.kierstead@faa.gov.
    (2) Refer to MCAI European Aviation Safety Agency AD 2015-0209, 
dated October 16, 2015, for more 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-2015-8257.
    (3) Turbomeca S.A. Alert MSB No. A298 72 2832, Version B, dated 
October 12, 2015, can be obtained from Turbomeca S.A., using the 
contact information in paragraph (h)(5) of this proposed AD.
    (4) Turbomeca S.A. Service Bulletin (SB) No. 298 72 2833, 
Version A, dated July 29, 2015, can be obtained from Turbomeca S.A., 
using the contact information in paragraph (h)(5) of this proposed 
AD.
    (5) For service information identified in this proposed AD, 
contact Turbomeca S.A., 40220 Tarnos, France; phone: (33) 05 59 74 
40 00; fax: (33) 05 59 74 45 15.
    (6) You may view this service information at the FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. 
For information on the availability of this material at the FAA, 
call 781-238-7125.

    Issued in Burlington, Massachusetts, on February 29, 2016.
Colleen M. D'Alessandro,
Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-05465 Filed 3-10-16; 8:45 am]
BILLING CODE 4910-13-P