Airworthiness Directives; Turbomeca S.A. Turboshaft Engines, 44839-44841 [2015-18051]

Download as PDF Federal Register / Vol. 80, No. 144 / Tuesday, July 28, 2015 / Rules and Regulations DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2014–0164; Directorate Identifier 2014–NE–02–AD; Amendment 39– 18191; AD 2015–13–04] RIN 2120–AA64 Airworthiness Directives; Turbomeca S.A. Turboshaft Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: FOR FURTHER INFORMATION CONTACT: We are superseding airworthiness directive (AD) 2014–19– 05 for all Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, 1S1, 2B, 2B1, 2C, 2C1, 2C2, 2S1, and 2S2 turboshaft engines. AD 2014–19–05 required an initial one-time vibration check of the engine accessory gearbox (AGB) on certain Arriel 1 and Arriel 2 model engines, and repetitive vibration checks for all Arriel 1 and Arriel 2 engines. This AD was prompted by our determination that we incorrectly identified technical references in AD 2014–19–05. 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. DATES: This AD is effective September 1, 2015. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of September 1, 2015. The Director of the Federal Register approved the incorporation by reference of certain other publications listed in this AD as of November 5, 2014 (79 FR 59091, October 1, 2014). ADDRESSES: 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. It is also available on the Internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2014– 0164. asabaliauskas on DSK5VPTVN1PROD with RULES SUMMARY: 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– VerDate Sep<11>2014 18:34 Jul 27, 2015 Jkt 235001 0164; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the mandatory continuing airworthiness information, regulatory evaluation, any comments received, and other information. The address for the Docket Office (phone: 800–647–5527) is Document Management Facility, U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. 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: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2014–19–05, Amendment 39–17973 (79 FR 59091, October 1, 2014), (‘‘AD 2014–19–05’’). AD 2014–19–05 applied to the specified products. The NPRM published in the Federal Register on February 4, 2015 (80 FR 6017). The NPRM proposed to continue to require an initial one-time vibration check of the engine AGB on certain higher risk Arriel 1 and Arriel 2 model engines. That NPRM also proposed to continue to require repetitive vibration checks of the engine AGB for all Arriel 1 and Arriel 2 engines at every engine shop visit. We gave the public the opportunity to participate in developing this AD. We considered the comments received. Request To Allow Sufficient Compliance Time One commenter requested that sufficient time be allowed to comply with this AD to account for the availability of the vibration test equipment and Turbomeca technical representatives. The commenter indicated that the initial one-time vibration check of the engine AGB requires use of Turbomeca-specified vibration test equipment and is performed by Turbomeca technical personnel. We do not agree. The compliance times in the AD provide sufficient time for the operator to perform the required maintenance. Operators can also procure the required vibration test equipment to perform the test. We did not change this AD. PO 00000 Frm 00011 Fmt 4700 Sfmt 4700 44839 Request To Revise Definition of Shop Visit One commenter requested that we revise the AD to make the definition of ‘‘shop visit’’ consistent with EASA AD 2014–0036. The EASA AD specifies that the repetitive vibration check of the engine AGB be performed during a ‘‘qualifying shop visit,’’ which is when the engine is ‘‘overhauled or repaired in a qualified Repair Center.’’ The commenter indicated that because of the modularity of the Arriel engine, it is possible to separate a major mating flange during ‘‘Level 2’’ or ‘‘Level 1 maintenance.’’ We do not agree. We do not find specific criteria in EASA AD 2014– 0036’s definition of ‘‘engine shop visit’’ for when the repetitive AGB vibration check should be conducted. We did not change this AD. Request To Eliminate Repetitive Vibration Check One commenter requested that the repetitive vibration check required by this AD be eliminated. The commenter indicated that this vibration check is already incorporated in Turbomeca Level 4 maintenance, and in subsequent test requirements, so it will always be done. Further, adding this requirement to the AD only adds to the cost and paperwork requirements for operators. We do not agree. The repetitive vibration checks of the engine AGB are required to prevent failure of the AGB. We did not change this AD. Revisions To Service Information References Turbomeca S.A. updated the service bulletins (SBs) referenced in this AD. We reviewed the updated SBs and found they adequately addressed the unsafe condition. Therefore, we revised this AD to reference the updated versions of the SBs. This AD now references Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292 72 0839, Version C, dated June 18, 2014, and Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 18, 2014. We also revised compliance paragraph (e) of this AD to refer to the corresponding paragraphs used in these updated MSBs to require the vibration checks. Conclusion We reviewed the available data, including the comments received, and determined that air safety and the public interest require adopting this AD with the changes described previously. We determined that these changes will not increase the economic burden on any operator or increase the scope of this AD. E:\FR\FM\28JYR1.SGM 28JYR1 44840 Federal Register / Vol. 80, No. 144 / Tuesday, July 28, 2015 / Rules and Regulations Related Service Information Under 1 CFR Part 51 We reviewed Turbomeca S.A. MSB No. 292 72 0839, Version C, dated June 18, 2014; and Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 18, 2014. The service information describes procedures for vibration checks. 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 AD. Costs of Compliance We estimate that this AD affects 1,268 engines installed on aircraft of U.S. registry. We also estimate that it will take about 4 hours per engine to comply with the inspection requirement in this AD. The average labor rate is $85 per hour. Based on these figures, we estimate the cost of this AD on U.S. operators to be $431,120. (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. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority for This Rulemaking Authority: 49 U.S.C. 106(g), 40113, 44701. 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. asabaliauskas on DSK5VPTVN1PROD with RULES Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), VerDate Sep<11>2014 18:34 Jul 27, 2015 Jkt 235001 § 39.13 [Amended] 2. The FAA amends § 39.13 by removing airworthiness directive (AD) 2014–19–05, Amendment 39–17973 (79 FR 59091, October 1, 2014), and adding the following new AD: ■ 2015–13–04 Turbomeca S.A.: Amendment 39–18191; Docket No. FAA–2014–0164; Directorate Identifier 2014–NE–02–AD. (a) Effective Date This AD is effective September 1, 2015 (b) Affected ADs This AD supersedes AD 2014–19–05, Amendment 39–17973 (79 FR 59091, October 1, 2014). (c) Applicability This AD applies to all Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, 1S1, 2B, 2B1, 2C, 2C1, 2C2, 2S1, and 2S2 turboshaft engines. (d) Unsafe Condition This AD was prompted by reports of uncommanded in-flight shutdowns on Turbomeca S.A. Arriel 1 and Arriel 2 engines following rupture of the 41-tooth gear forming part of the 41/23-tooth bevel gear located in the engine accessory gearbox (AGB). We are issuing this AD to prevent failure of the engine AGB, which could lead to in-flight shutdown and damage to the engine, which may result in damage to the aircraft. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) For all Turbomeca S.A. Arriel 1B, 1D, 1D1, 2B, and 2B1 turboshaft engines, perform a one-time vibration check of the AGB 41/23- PO 00000 Frm 00012 Fmt 4700 Sfmt 4700 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 the figure under paragraph 2.2. of Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292 72 0839, Version C, dated June 18, 2014, use paragraph 2.3.1. through 2.3.3. of Turbomeca S.A. MSB No. 292 72 0839, Version C, dated June 18, 2014, to perform the vibration check. (ii) You must also use Turbomeca S.A. Arriel 1 Technical Instruction (TI) No. 292 72 0839 and Turbomeca S.A. Arriel 1 TI No. 292 72 0840 to do the vibration check. (iii) For all Turbomeca S.A. Arriel 2B and 2B1 engines, except those engines with an AGB installed with an S/N listed in the figure under paragraph 2.2. of Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 18, 2014, use paragraphs 2.3.1. through 2.3.3. of Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 18, 2014, to perform the vibration check. Turbomeca S.A. MSB No. 292 72 2849 refers to Turbomeca S.A. Arriel 2 TI No. 292 72 2849 and to Turbomeca S.A. Arriel 2 TI No. 292 72 2850, which you must also use to do the vibration check. (iv) The reporting requirements in paragraphs 2.3.1.1.3., 2.3.2.1.3., and the requirement to return module M01 (AGB) to a Repair Center in paragraph 2.3.2.2.2. in Turbomeca S.A. MSB No. 292 72 0839, Version C, dated June 18, 2014, and in Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 18, 2014, are not required by this AD. (2) For all affected Turbomeca S.A. engines, during each engine shop visit after the effective date of this AD, perform a vibration check of the AGB 41/23-tooth bevel gear meshing. (3) If the AGB does not pass the vibration check required by paragraphs (e)(1) or (e)(2) of this AD, replace the AGB with a part eligible for installation. (f) Credit for Previous Action If you performed a vibration check of the AGB before the effective date of this AD using Turbomeca S.A. MSB No. 292 72 0839, Version A, dated September 9, 2013, or Version B, dated November 25, 2013, or MSB No. 292 72 2849, Version A, dated September 9, 2013, or Version B, dated November 25, 2013; or during an engine shop visit per paragraph (e)(2) of this AD, you met the initial inspection requirement of paragraph (e)(1) of this AD. (g) Definition For the purpose of this AD, an ‘‘engine shop visit’’ is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges. The separation of engine flanges solely for the purpose of transportation without subsequent engine maintenance does not constitute an engine shop visit. (h) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to E:\FR\FM\28JYR1.SGM 28JYR1 Federal Register / Vol. 80, No. 144 / Tuesday, July 28, 2015 / Rules and Regulations make your request. You may email your request to: ANE-AD-AMOC@faa.gov. asabaliauskas on DSK5VPTVN1PROD with RULES (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/#!documentDetail;D=FAA2014-0164-0003. (3) Turbomeca S.A. Engine Test Bed Acceptance Test Specifications CCT No. 0292009400, Version T; CCT No. 0292019400, Version R; CCT No. 02920 19690, Version I; CCT No. 0292019530, Version K; CCT No. 0292019610, Version K; CCT No. 0292029450, Version J; CCT No. 0292029490, Version I; CCT No. 0292029440, Version I; CCT No. 0292029480, Version K; CCT No. 0292029520, Version H; CCT No. 0292029410, Version L; CCT No. 0292 029530, 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 (j)(5) of this AD. (j) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (3) The following service information was approved for IBR on September 1, 2015. (i) Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292 72 0839, Version C, dated June 18, 2014. (ii) Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 18, 2014. (4) The following service information was approved for IBR on November 5, 2014 (79 FR 59091, October 1, 2014). (i) Turbomeca S.A. MSB No. 292 72 0839, Version B, dated November 25, 2013. (ii) Turbomeca S.A. MSB No. 292 72 2849, Version B, dated November 25, 2013. (iii) Turbomeca S.A. Arriel 1 Technical Instruction (TI) No. 292 72 0839, Version E, dated February 20, 2014. (iv) Turbomeca S.A. Arriel 1 TI No. 292 72 0840, Version A, dated November 29, 2013. (v) Turbomeca S.A. Arriel 2 TI No. 292 72 2849, Version E, dated February 20, 2014. (vi) Turbomeca S.A. Arriel 2 TI No. 292 72 2850, Version A, dated November 29, 2013. (5) For Turbomeca S.A. 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. (6) You may view this service information at FAA, Engine & Propeller Directorate, 12 VerDate Sep<11>2014 18:34 Jul 27, 2015 Jkt 235001 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. (7) You may view this service information at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: https://www.archives. gov/federal-register/cfr/ibr-locations.html. Issued in Burlington, Massachusetts, on July 16, 2015. Robert J. Ganley, Acting Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2015–18051 Filed 7–27–15; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2015–0046; Airspace Docket No. 14–ASO–23] Establishment of Class E Airspace; Headland, AL Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: This action establishes Class E Airspace at Headland, AL, to accommodate new Area Navigation (RNAV) Global Positioning System (GPS) Standard Instrument Approach Procedures (SIAPs) serving Headland Municipal Airport. Controlled airspace is necessary for the safety and management of instrument flight rules (IFR) operations at the airport. DATES: Effective 0901 UTC, October 15, 2015. The Director of the Federal Register approves this incorporation by reference action under title 1, Code of Federal Regulations, part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments. SUMMARY: FAA Order 7400.9Y, Airspace Designations and Reporting Points, and subsequent amendments can be viewed online at https://www.faa.gov/ airtraffic/publications/. The Order is also available for inspection at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to https://www.archives.gov/ federal_register/code_of_federalregulations/ibr_locations.html. FAA Order 7400.9, Airspace Designations and Reporting Points, is published yearly and effective on September 15. For further information, you can contact the Airspace Policy and ADDRESSES: PO 00000 Frm 00013 Fmt 4700 Sfmt 4700 44841 Regulations Group, Federal Aviation Administration, 800 Independence Avenue SW., Washington, DC, 20591; telephone: 202–267–8783. FOR FURTHER INFORMATION CONTACT: John Fornito, Operations Support Group, Eastern Service Center, Federal Aviation Administration, P.O. Box 20636, Atlanta, Georgia 30320; telephone (404) 305–6364. SUPPLEMENTARY INFORMATION: Authority for This Rulemaking The FAA’s authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. 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. This rulemaking is promulgated under the authority described in Subtitle VII, Part, A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it amends Class E airspace at Headland Municipal Airport, Headland, AL. History On April 24, 2015, the FAA published in the Federal Register a notice of proposed rulemaking (NPRM) to establish Class E airspace extending upward from 700 feet above the surface at Headland Municipal Airport, Headland, AL (80 FR 22946). Interested parties were invited to participate in this rulemaking effort by submitting written comments on the proposal to the FAA. No comments were received. Class E airspace designations are published in paragraph 6005 of FAA Order 7400.9Y dated August 6, 2014, and effective September 15, 2014, which is incorporated by reference in 14 CFR part 71.1. The Class E airspace designations listed in this document will be published subsequently in the Order. Availability and Summary of Documents for Incorporation by Reference This document amends FAA Order 7400.9Y, airspace Designations and Reporting Points, dated August 6, 2014, and effective September 15, 2014. FAA Order 7400.9Y is publicly available as listed in the ADDRESSES section of this final rule. FAA Order 7400.9Y lists Class A, B, C, D, and E airspace areas, air traffic service routes, and reporting points E:\FR\FM\28JYR1.SGM 28JYR1

Agencies

[Federal Register Volume 80, Number 144 (Tuesday, July 28, 2015)]
[Rules and Regulations]
[Pages 44839-44841]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-18051]



[[Page 44839]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0164; Directorate Identifier 2014-NE-02-AD; 
Amendment 39-18191; AD 2015-13-04]
RIN 2120-AA64


Airworthiness Directives; Turbomeca S.A. Turboshaft Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are superseding airworthiness directive (AD) 2014-19-05 for 
all Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 
1K1, 1S, 1S1, 2B, 2B1, 2C, 2C1, 2C2, 2S1, and 2S2 turboshaft engines. 
AD 2014-19-05 required an initial one-time vibration check of the 
engine accessory gearbox (AGB) on certain Arriel 1 and Arriel 2 model 
engines, and repetitive vibration checks for all Arriel 1 and Arriel 2 
engines. This AD was prompted by our determination that we incorrectly 
identified technical references in AD 2014-19-05. 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.

DATES: This AD is effective September 1, 2015.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of September 1, 
2015.
    The Director of the Federal Register approved the incorporation by 
reference of certain other publications listed in this AD as of 
November 5, 2014 (79 FR 59091, October 1, 2014).

ADDRESSES: 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. It is also available on the 
Internet at https://www.regulations.gov by searching for and locating 
Docket No. FAA-2014-0164.

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 Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this AD, the mandatory continuing airworthiness information, 
regulatory evaluation, any comments received, and other information. 
The address for the Docket Office (phone: 800-647-5527) is Document 
Management Facility, U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.

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:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to supersede AD 2014-19-05, Amendment 39-17973 (79 FR 59091, 
October 1, 2014), (``AD 2014-19-05''). AD 2014-19-05 applied to the 
specified products. The NPRM published in the Federal Register on 
February 4, 2015 (80 FR 6017). The NPRM proposed to continue to require 
an initial one-time vibration check of the engine AGB on certain higher 
risk Arriel 1 and Arriel 2 model engines. That NPRM also proposed to 
continue to require repetitive vibration checks of the engine AGB for 
all Arriel 1 and Arriel 2 engines at every engine shop visit.
    We gave the public the opportunity to participate in developing 
this AD. We considered the comments received.

Request To Allow Sufficient Compliance Time

    One commenter requested that sufficient time be allowed to comply 
with this AD to account for the availability of the vibration test 
equipment and Turbomeca technical representatives. The commenter 
indicated that the initial one-time vibration check of the engine AGB 
requires use of Turbomeca-specified vibration test equipment and is 
performed by Turbomeca technical personnel.
    We do not agree. The compliance times in the AD provide sufficient 
time for the operator to perform the required maintenance. Operators 
can also procure the required vibration test equipment to perform the 
test. We did not change this AD.

Request To Revise Definition of Shop Visit

    One commenter requested that we revise the AD to make the 
definition of ``shop visit'' consistent with EASA AD 2014-0036. The 
EASA AD specifies that the repetitive vibration check of the engine AGB 
be performed during a ``qualifying shop visit,'' which is when the 
engine is ``overhauled or repaired in a qualified Repair Center.'' The 
commenter indicated that because of the modularity of the Arriel 
engine, it is possible to separate a major mating flange during ``Level 
2'' or ``Level 1 maintenance.''
    We do not agree. We do not find specific criteria in EASA AD 2014-
0036's definition of ``engine shop visit'' for when the repetitive AGB 
vibration check should be conducted. We did not change this AD.

Request To Eliminate Repetitive Vibration Check

    One commenter requested that the repetitive vibration check 
required by this AD be eliminated. The commenter indicated that this 
vibration check is already incorporated in Turbomeca Level 4 
maintenance, and in subsequent test requirements, so it will always be 
done. Further, adding this requirement to the AD only adds to the cost 
and paperwork requirements for operators.
    We do not agree. The repetitive vibration checks of the engine AGB 
are required to prevent failure of the AGB. We did not change this AD.

Revisions To Service Information References

    Turbomeca S.A. updated the service bulletins (SBs) referenced in 
this AD. We reviewed the updated SBs and found they adequately 
addressed the unsafe condition. Therefore, we revised this AD to 
reference the updated versions of the SBs. This AD now references 
Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292 72 0839, 
Version C, dated June 18, 2014, and Turbomeca S.A. MSB No. 292 72 2849, 
Version C, dated June 18, 2014. We also revised compliance paragraph 
(e) of this AD to refer to the corresponding paragraphs used in these 
updated MSBs to require the vibration checks.

Conclusion

    We reviewed the available data, including the comments received, 
and determined that air safety and the public interest require adopting 
this AD with the changes described previously. We determined that these 
changes will not increase the economic burden on any operator or 
increase the scope of this AD.

[[Page 44840]]

Related Service Information Under 1 CFR Part 51

    We reviewed Turbomeca S.A. MSB No. 292 72 0839, Version C, dated 
June 18, 2014; and Turbomeca S.A. MSB No. 292 72 2849, Version C, dated 
June 18, 2014. The service information describes procedures for 
vibration checks. 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 AD.

Costs of Compliance

    We estimate that this AD affects 1,268 engines installed on 
aircraft of U.S. registry. We also estimate that it will take about 4 
hours per engine to comply with the inspection requirement in this AD. 
The average labor rate is $85 per hour. Based on these figures, we 
estimate the cost of this 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

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under 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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends part 39 of the Federal Aviation 
Regulations (14 CFR part 39) as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by removing airworthiness directive (AD) 
2014-19-05, Amendment 39-17973 (79 FR 59091, October 1, 2014), and 
adding the following new AD:

2015-13-04 Turbomeca S.A.: Amendment 39-18191; Docket No. FAA-2014-
0164; Directorate Identifier 2014-NE-02-AD.

(a) Effective Date

    This AD is effective September 1, 2015

(b) Affected ADs

    This AD supersedes AD 2014-19-05, Amendment 39-17973 (79 FR 
59091, October 1, 2014).

(c) Applicability

    This AD applies to all Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 
1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, 1S1, 2B, 2B1, 2C, 2C1, 2C2, 2S1, 
and 2S2 turboshaft engines.

(d) Unsafe Condition

    This AD was prompted by reports of uncommanded in-flight 
shutdowns on Turbomeca S.A. Arriel 1 and Arriel 2 engines following 
rupture of the 41-tooth gear forming part of the 41/23-tooth bevel 
gear located in the engine accessory gearbox (AGB). We are issuing 
this AD to prevent failure of the engine AGB, which could lead to 
in-flight shutdown and damage to the engine, which may result in 
damage to the aircraft.

(e) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) For all Turbomeca S.A. Arriel 1B, 1D, 1D1, 2B, and 2B1 
turboshaft engines, perform a one-time vibration check of the AGB 
41/23-tooth bevel gear meshing within 32 months of the effective 
date of this AD, as follows:
    (i) For all Turbomeca S.A. Arriel 1B, 1D, and 1D1 engines, 
except those engines with an AGB installed with a serial number (S/
N) listed in the figure under paragraph 2.2. of Turbomeca S.A. 
Mandatory Service Bulletin (MSB) No. 292 72 0839, Version C, dated 
June 18, 2014, use paragraph 2.3.1. through 2.3.3. of Turbomeca S.A. 
MSB No. 292 72 0839, Version C, dated June 18, 2014, to perform the 
vibration check.
    (ii) You must also use Turbomeca S.A. Arriel 1 Technical 
Instruction (TI) No. 292 72 0839 and Turbomeca S.A. Arriel 1 TI No. 
292 72 0840 to do the vibration check.
    (iii) For all Turbomeca S.A. Arriel 2B and 2B1 engines, except 
those engines with an AGB installed with an S/N listed in the figure 
under paragraph 2.2. of Turbomeca S.A. MSB No. 292 72 2849, Version 
C, dated June 18, 2014, use paragraphs 2.3.1. through 2.3.3. of 
Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 18, 2014, 
to perform the vibration check. Turbomeca S.A. MSB No. 292 72 2849 
refers to Turbomeca S.A. Arriel 2 TI No. 292 72 2849 and to 
Turbomeca S.A. Arriel 2 TI No. 292 72 2850, which you must also use 
to do the vibration check.
    (iv) The reporting requirements in paragraphs 2.3.1.1.3., 
2.3.2.1.3., and the requirement to return module M01 (AGB) to a 
Repair Center in paragraph 2.3.2.2.2. in Turbomeca S.A. MSB No. 292 
72 0839, Version C, dated June 18, 2014, and in Turbomeca S.A. MSB 
No. 292 72 2849, Version C, dated June 18, 2014, are not required by 
this AD.
    (2) For all affected Turbomeca S.A. engines, during each engine 
shop visit after the effective date of this AD, perform a vibration 
check of the AGB 41/23-tooth bevel gear meshing.
    (3) If the AGB does not pass the vibration check required by 
paragraphs (e)(1) or (e)(2) of this AD, replace the AGB with a part 
eligible for installation.

(f) Credit for Previous Action

    If you performed a vibration check of the AGB before the 
effective date of this AD using Turbomeca S.A. MSB No. 292 72 0839, 
Version A, dated September 9, 2013, or Version B, dated November 25, 
2013, or MSB No. 292 72 2849, Version A, dated September 9, 2013, or 
Version B, dated November 25, 2013; or during an engine shop visit 
per paragraph (e)(2) of this AD, you met the initial inspection 
requirement of paragraph (e)(1) of this AD.

(g) Definition

    For the purpose of this AD, an ``engine shop visit'' is the 
induction of an engine into the shop for maintenance involving the 
separation of pairs of major mating engine flanges. The separation 
of engine flanges solely for the purpose of transportation without 
subsequent engine maintenance does not constitute an engine shop 
visit.

(h) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
for this AD. Use the procedures found in 14 CFR 39.19 to

[[Page 44841]]

make your request. You may email your request to: ANE-AD-AMOC@faa.gov.

(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/#!documentDetail;D=FAA-2014-0164-0003.
    (3) Turbomeca S.A. Engine Test Bed Acceptance Test 
Specifications CCT No. 0292009400, Version T; CCT No. 0292019400, 
Version R; CCT No. 0292019690, Version I; CCT No. 0292019530, 
Version K; CCT No. 0292019610, Version K; CCT No. 0292029450, 
Version J; CCT No. 0292029490, Version I; CCT No. 0292029440, 
Version I; CCT No. 0292029480, Version K; CCT No. 0292029520, 
Version H; CCT No. 0292029410, Version L; CCT No. 0292029530, 
Version H; or Turbomeca ID No. 383952; or Turbomeca RTD No. X 292 65 
327 2, provide information on performing a vibration check during an 
engine shop visit. These service documents can be obtained from 
Turbomeca S.A. using the contact information in paragraph (j)(5) of 
this AD.

(j) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (3) The following service information was approved for IBR on 
September 1, 2015.
    (i) Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292 72 
0839, Version C, dated June 18, 2014.
    (ii) Turbomeca S.A. MSB No. 292 72 2849, Version C, dated June 
18, 2014.
    (4) The following service information was approved for IBR on 
November 5, 2014 (79 FR 59091, October 1, 2014).
    (i) Turbomeca S.A. MSB No. 292 72 0839, Version B, dated 
November 25, 2013.
    (ii) Turbomeca S.A. MSB No. 292 72 2849, Version B, dated 
November 25, 2013.
    (iii) Turbomeca S.A. Arriel 1 Technical Instruction (TI) No. 292 
72 0839, Version E, dated February 20, 2014.
    (iv) Turbomeca S.A. Arriel 1 TI No. 292 72 0840, Version A, 
dated November 29, 2013.
    (v) Turbomeca S.A. Arriel 2 TI No. 292 72 2849, Version E, dated 
February 20, 2014.
    (vi) Turbomeca S.A. Arriel 2 TI No. 292 72 2850, Version A, 
dated November 29, 2013.
    (5) For Turbomeca S.A. 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.
    (6) You may view this service information at 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.
    (7) You may view this service information at the National 
Archives and Records Administration (NARA). For information on the 
availability of this material at NARA, call 202-741-6030, or go to: 
https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Burlington, Massachusetts, on July 16, 2015.
Robert J. Ganley,
Acting Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-18051 Filed 7-27-15; 8:45 am]
BILLING CODE 4910-13-P
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