Airworthiness Directives; Turbomeca S.A. MAKILA 1A and 1A1 Turboshaft Engines, 32260-32262 [2010-13433]

Download as PDF 32260 Federal Register / Vol. 75, No. 109 / Tuesday, June 8, 2010 / Rules and Regulations notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. Material Incorporated by Reference (j) You must use Learjet 60 Temporary Revision 12–16, dated March 18, 2009, to the Learjet 60 Maintenance Manual; and Learjet 60 Temporary Flight Manual Change 2009– 03, dated March 9, 2009, to the Learjet 60 or Learjet 60XR Airplane Flight Manual; as applicable; to do the actions required by this AD, unless the AD specifies otherwise. (The issue date of Learjet 60 Temporary Flight Manual Change 2009–03 is specified only on the first page of the document.) (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Learjet, Inc., One Learjet Way, Wichita, Kansas 67209–2942; telephone 316–946–2000; fax 316–946–2220; e-mail ac.ict@aero.bombardier.com; Internet https:// www.bombardier.com. (3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227–1221 or 425–227–1152. (4) You may also review copies of the service information that is incorporated by reference 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_federal_regulations/ ibr_locations.html. Issued in Renton, Washington, on April 1, 2010. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010–12676 Filed 6–7–10; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2009–0982; Directorate Identifier 2009–NE–19–AD; Amendment 39– 16323; AD 2010–12–02] srobinson on DSKHWCL6B1PROD with RULES RIN 2120–AA64 Airworthiness Directives; Turbomeca S.A. MAKILA 1A and 1A1 Turboshaft Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for the VerDate Mar<15>2010 18:47 Jun 07, 2010 Jkt 220001 products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: The installation of TU250 comparator/ selector (CS) boards, however, has resulted in a few occurrences of erratic engine behaviour, in the form of unexpected N1 variations and/or illumination of the ‘‘GOV’’ warning light. The conclusions from an ´ investigation by Turbomeca are that these malfunctions are due to a lapse of quality control in the varnishing process applied to the boards, and that only boards in a specific serial number range, as defined under ‘‘Applicability’’ and referred to below as the ‘‘suspect batch’’, are affected. We are issuing this AD to prevent loss of automatic engine control during flight due to an uncommanded engine rollback, which could result in the inability to continue safe flight. DATES: This AD becomes effective July 13, 2010. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of July 13, 2010. ADDRESSES: The Docket Operations office is located at Docket Management Facility, U.S. Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001. FOR FURTHER INFORMATION CONTACT: Kevin Dickert, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: kevin.dickert@faa.gov; telephone (781) 238–7117, fax (781) 238–7199. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to the specified products. That NPRM was published in the Federal Register on March 31, 2010 (75 FR 16022). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI states that: The installation of TU250 CS boards, however, has resulted in a few occurrences of erratic engine behaviour, in the form of unexpected N1 variations and/or illumination of the ‘‘GOV’’ warning light. The conclusions from an investigation by Turbomeca are that these malfunctions are due to a lapse of quality control in the varnishing process applied to the boards, and that only boards in a specific serial number range, as defined under ‘‘Applicability’’ and PO 00000 Frm 00010 Fmt 4700 Sfmt 4700 referred to below as the ‘‘suspect batch’’, are affected. Comments We gave the public the opportunity to participate in developing this AD. We received no comments on the NPRM or on the determination of the cost to the public. Conclusion We reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed. Costs of Compliance Based on the service information, we estimate that this AD will affect about 10 products of U.S. registry. We also estimate that it will take about 1 workhour per product to comply with this AD. The average labor rate is $85 per work-hour. Required parts will cost about $3,500 per product. Based on these figures, we estimate the cost of the AD on U.S. operators to be $35,850. 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 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 this AD: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866; E:\FR\FM\08JNR1.SGM 08JNR1 32261 Federal Register / Vol. 75, No. 109 / Tuesday, June 8, 2010 / Rules and Regulations 2. Is not a ‘‘significant rule’’ under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3. 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. We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket. Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov; 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 AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (phone (800) 647–5527) is provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. 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 14 CFR part 39 as follows: ■ PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: ■ 2010–12–02 Turbomeca S.A.: Amendment 39–16323. Docket No. FAA–2009–0982; Directorate Identifier 2009–NE–19–AD. Effective Date (a) This airworthiness directive (AD) becomes effective July 13, 2010. FAA AD Differences Affected ADs (b) None. Applicability (c) This AD applies to Turbomeca S.A. Makila 1A and 1A1 turboshaft engines with a comparator/selector (CS) board, part number (P/N) 0 177 99 716 0, and a serial number (S/N) between 241EL and 1192EL (inclusive) installed. These engines are installed on, but not limited to, Eurocopter AS 332 C, AS 332 C1, AS 332 L, and AS 332 L1 helicopters. Reason (d) The European Aviation Safety Agency (EASA) AD 2009–0090, dated April 28, 2009, states that this AD results from the following: (1) The installation of TU250 CS boards, however, has resulted in a few occurrences of erratic engine behaviour, in the form of unexpected N1 variations and/or illumination of the ‘‘GOV’’ warning light. The conclusions from an investigation by ´ Turbomeca are that these malfunctions are due to a lapse of quality control in the varnishing process applied to the boards, and that only boards in a specific serial number range, as defined under ‘‘Applicability’’ and referred to below as the ‘‘suspect batch’’, are affected. (2) We are issuing this AD to prevent loss of automatic engine control during flight due to an uncommanded engine roll-back, which could result in the inability to continue safe flight. Actions and Compliance (e) Unless already done, do the following actions. (1) Within 50 operating hours from the effective date of this AD, replace any CS board, P/N 0 177 99 716 0, with a S/N from 241EL to 1192EL (inclusive), that has fewer than 200 hours-since-new (HSN). Use paragraph 2 of Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 298 73 0809 Version A, dated February 12, 2008, to replace the boards. (2) During the next 500-hour inspection, replace any CS board, P/N 0 177 99 716 0, with a S/N from 241EL to 1192EL (inclusive), that has 200 HSN or more. Use paragraph 2 of Turbomeca S.A. MSB No. 298 73 0810 Version B, dated April 27, 2009, to replace the boards. (f) This AD differs from the Mandatory Continuing Airworthiness Information (MCAI) and/or service information as follows: (1) This AD requires replacing within 50 operating hours after the effective date of this AD, all comparator/selector boards, P/N 0 177 99 716 0, with an S/N from 241EL to 1192EL (inclusive) that have fewer than 200 HSN. (2) This AD requires replacing at the next 500-hour routine inspection after the effective date of this AD, all comparator/ selector boards, P/N 0 177 99 716 0, with a S/N from 241EL to 1192EL (inclusive) that have 200 HSN or more. Alternative Methods of Compliance (AMOCS) (g) The Manager, Engine Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (h) Refer to MCAI EASA Airworthiness Directive 2009–0090, dated April 28, 2009, for related information. (i) Contact Kevin Dickert, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: kevin.dickert@faa.gov; telephone (781) 238–7117, fax (781) 238– 7199, for more information about this AD. Material Incorporated by Reference (j) You must use the service information specified in Table 1 of this AD to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Turbomeca, 40220 Tarnos, France; telephone 33 05 59 74 40 00; fax 33 05 59 74 45 15. (3) You may review copies at the FAA, New England Region, 12 New England Executive Park, Burlington, MA; or 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/ibrlocations.html. TABLE 1—MATERIAL INCORPORATED BY REFERENCE srobinson on DSKHWCL6B1PROD with RULES Turbomeca mandatory Service Bulletin No. Page 298 73 0809. Total Pages: 7 298 73 0810. Total Pages: 7 VerDate Mar<15>2010 18:47 Jun 07, 2010 Version Date ALL .............. PO 00000 Frm 00011 Fmt 4700 Sfmt 4700 February 12, 2008. ALL .............. Jkt 220001 A B April 27, 2009. E:\FR\FM\08JNR1.SGM 08JNR1 32262 Federal Register / Vol. 75, No. 109 / Tuesday, June 8, 2010 / Rules and Regulations Issued in Burlington, Massachusetts, on May 24, 2010. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2010–13433 Filed 6–7–10; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2009–0606; Directorate Identifier 2009–NE–11–AD; Amendment 39– 16324; AD 2010–12–03] RIN 2120–AA64 Airworthiness Directives; CFM International, S.A. Models CFM56–3 and –3B Turbofan Engines srobinson on DSKHWCL6B1PROD with RULES AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain CFM International, S.A. models CFM56–3 and –3B turbofan engines. This AD requires initial and repetitive inspections for damage to the fan blades. This AD results from a report of a failed fan blade with severe out-oflimit wear on the underside of the blade platform where it contacts the damper. We are issuing this AD to prevent failure of multiple fan blades, which could result in an uncontained failure of the engine and damage to the airplane. DATES: This AD becomes effective July 13, 2010. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of July 13, 2010. ADDRESSES: You can get the service information identified in this AD from CFM International, S. A., Technical Publication Department, 1 Neumann Way, Cincinnati, OH 45215; telephone (513) 552–2800; fax (513) 552–2816. The Docket Operations office is located at Docket Management Facility, U.S. Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001. FOR FURTHER INFORMATION CONTACT: Antonio Cancelliere, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: antonio.cancelliere@faa.gov; telephone (781) 238–7751; fax (781) 238–7199. SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 with VerDate Mar<15>2010 18:47 Jun 07, 2010 Jkt 220001 a proposed AD. The proposed AD applies to certain CFM International, S.A. models CFM56–3 and –3B turbofan engines. We published the proposed AD in the Federal Register on July 23, 2009 (74 FR 36420), and published a supplemental proposed AD in the Federal Register on April 1, 2010 (75 16361). Those actions proposed to require initial and repetitive inspections for damage to the fan blades. Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov; 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 AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. Comments We provided the public the opportunity to participate in the development of this AD. We previously responded to the comments received on the original proposed AD in the supplemental proposed AD. We have considered the one comment received on the supplemental proposed AD. The commenter supports the proposal. Conclusion We have carefully reviewed the available data, including the comment received, and determined that air safety and the public interest require adopting the AD as proposed. Costs of Compliance We estimate that this AD will affect 50 engines installed on airplanes of U.S. registry. We also estimate that it will take about 8 work-hours per engine to perform the AD actions, and that the average labor rate is $80 per work-hour. Required parts will cost about $38,000 per engine. Based on these figures, we estimate the total cost of the AD to U.S. operators to be $1,932,000. 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, PO 00000 Frm 00012 Fmt 4700 Sfmt 4700 part A, subpart III, section 44701, ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We have determined that this 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); and (3) 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. We prepared a summary of the costs to comply with this AD and placed it in the AD Docket. You may get a copy of this summary at the address listed under ADDRESSES. 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 Federal Aviation Administration amends 14 CFR part 39 as follows: ■ PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ 2010–12–03 CFM International, S.A.: Amendment 39–16324. Docket No. FAA–2009–0606; Directorate Identifier 2009–NE–11–AD. E:\FR\FM\08JNR1.SGM 08JNR1

Agencies

[Federal Register Volume 75, Number 109 (Tuesday, June 8, 2010)]
[Rules and Regulations]
[Pages 32260-32262]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-13433]



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



DEPARTMENT OF TRANSPORTATION



Federal Aviation Administration



14 CFR Part 39



[Docket No. FAA-2009-0982; Directorate Identifier 2009-NE-19-AD; 

Amendment 39-16323; AD 2010-12-02]

RIN 2120-AA64




Airworthiness Directives; Turbomeca S.A. MAKILA 1A and 1A1 

Turboshaft Engines



AGENCY: Federal Aviation Administration (FAA), DOT.



ACTION: Final rule.



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



SUMMARY: We are adopting a new airworthiness directive (AD) for the 

products listed above. This AD results from mandatory continuing 

airworthiness information (MCAI) issued by an aviation authority of 

another country to identify and correct an unsafe condition on an 

aviation product. The MCAI describes the unsafe condition as:



    The installation of TU250 comparator/selector (CS) boards, 

however, has resulted in a few occurrences of erratic engine 

behaviour, in the form of unexpected N1 variations and/or 

illumination of the ``GOV'' warning light. The conclusions from an 

investigation by Turbom[eacute]ca are that these malfunctions are 

due to a lapse of quality control in the varnishing process applied 

to the boards, and that only boards in a specific serial number 

range, as defined under ``Applicability'' and referred to below as 

the ``suspect batch'', are affected.



We are issuing this AD to prevent loss of automatic engine control 

during flight due to an uncommanded engine roll-back, which could 

result in the inability to continue safe flight.



DATES: This AD becomes effective July 13, 2010. The Director of the 

Federal Register approved the incorporation by reference of certain 

publications listed in this AD as of July 13, 2010.



ADDRESSES: The Docket Operations office is located at Docket Management 

Facility, U.S. Department of Transportation, 1200 New Jersey Avenue, 

SE., West Building Ground Floor, Room W12-140, Washington, DC 20590-

0001.



FOR FURTHER INFORMATION CONTACT: Kevin Dickert, Aerospace Engineer, 

Engine Certification Office, FAA, Engine and Propeller Directorate, 12 

New England Executive Park, Burlington, MA 01803; e-mail: 

kevin.dickert@faa.gov; telephone (781) 238-7117, fax (781) 238-7199.



SUPPLEMENTARY INFORMATION: 



Discussion



    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would apply to the specified products. 

That NPRM was published in the Federal Register on March 31, 2010 (75 

FR 16022). That NPRM proposed to correct an unsafe condition for the 

specified products. The MCAI states that:



    The installation of TU250 CS boards, however, has resulted in a 

few occurrences of erratic engine behaviour, in the form of 

unexpected N1 variations and/or illumination of the ``GOV'' warning 

light. The conclusions from an investigation by Turbomeca are that 

these malfunctions are due to a lapse of quality control in the 

varnishing process applied to the boards, and that only boards in a 

specific serial number range, as defined under ``Applicability'' and 

referred to below as the ``suspect batch'', are affected.



Comments



    We gave the public the opportunity to participate in developing 

this AD. We received no comments on the NPRM or on the determination of 

the cost to the public.



Conclusion



    We reviewed the available data and determined that air safety and 

the public interest require adopting the AD as proposed.



Costs of Compliance



    Based on the service information, we estimate that this AD will 

affect about 10 products of U.S. registry. We also estimate that it 

will take about 1 work-hour per product to comply with this AD. The 

average labor rate is $85 per work-hour. Required parts will cost about 

$3,500 per product. Based on these figures, we estimate the cost of the 

AD on U.S. operators to be $35,850.



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 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 this AD:

    1. Is not a ``significant regulatory action'' under Executive Order 

12866;



[[Page 32261]]



    2. Is not a ``significant rule'' under the DOT Regulatory Policies 

and Procedures (44 FR 11034, February 26, 1979); and

    3. 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.

    We prepared a regulatory evaluation of the estimated costs to 

comply with this AD and placed it in the AD docket.



Examining the AD Docket



    You may examine the AD docket on the Internet at https://www.regulations.gov; 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 AD, the regulatory evaluation, 

any comments received, and other information. The street address for 

the Docket Operations office (phone (800) 647-5527) is provided in the 

ADDRESSES section. Comments will be available in the AD docket shortly 

after receipt.



List of Subjects in 14 CFR Part 39



    Air transportation, Aircraft, Aviation safety, Incorporation by 

reference, Safety.



Adoption of the Amendment



0

Accordingly, under the authority delegated to me by the Administrator, 

the FAA amends 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 AD:



2010-12-02 Turbomeca S.A.: Amendment 39-16323. Docket No. FAA-2009-

0982; Directorate Identifier 2009-NE-19-AD.



Effective Date



    (a) This airworthiness directive (AD) becomes effective July 13, 

2010.



Affected ADs



    (b) None.



Applicability



    (c) This AD applies to Turbomeca S.A. Makila 1A and 1A1 

turboshaft engines with a comparator/selector (CS) board, part 

number (P/N) 0 177 99 716 0, and a serial number (S/N) between 241EL 

and 1192EL (inclusive) installed. These engines are installed on, 

but not limited to, Eurocopter AS 332 C, AS 332 C1, AS 332 L, and AS 

332 L1 helicopters.



Reason



    (d) The European Aviation Safety Agency (EASA) AD 2009-0090, 

dated April 28, 2009, states that this AD results from the 

following:

    (1) The installation of TU250 CS boards, however, has resulted 

in a few occurrences of erratic engine behaviour, in the form of 

unexpected N1 variations and/or illumination of the ``GOV'' warning 

light. The conclusions from an investigation by Turbom[eacute]ca are 

that these malfunctions are due to a lapse of quality control in the 

varnishing process applied to the boards, and that only boards in a 

specific serial number range, as defined under ``Applicability'' and 

referred to below as the ``suspect batch'', are affected.

    (2) We are issuing this AD to prevent loss of automatic engine 

control during flight due to an uncommanded engine roll-back, which 

could result in the inability to continue safe flight.



Actions and Compliance



    (e) Unless already done, do the following actions.

    (1) Within 50 operating hours from the effective date of this 

AD, replace any CS board, P/N 0 177 99 716 0, with a S/N from 241EL 

to 1192EL (inclusive), that has fewer than 200 hours-since-new 

(HSN). Use paragraph 2 of Turbomeca S.A. Mandatory Service Bulletin 

(MSB) No. 298 73 0809 Version A, dated February 12, 2008, to replace 

the boards.

    (2) During the next 500-hour inspection, replace any CS board, 

P/N 0 177 99 716 0, with a S/N from 241EL to 1192EL (inclusive), 

that has 200 HSN or more. Use paragraph 2 of Turbomeca S.A. MSB No. 

298 73 0810 Version B, dated April 27, 2009, to replace the boards.



FAA AD Differences



    (f) This AD differs from the Mandatory Continuing Airworthiness 

Information (MCAI) and/or service information as follows:

    (1) This AD requires replacing within 50 operating hours after 

the effective date of this AD, all comparator/selector boards, P/N 0 

177 99 716 0, with an S/N from 241EL to 1192EL (inclusive) that have 

fewer than 200 HSN.

    (2) This AD requires replacing at the next 500-hour routine 

inspection after the effective date of this AD, all comparator/

selector boards, P/N 0 177 99 716 0, with a S/N from 241EL to 1192EL 

(inclusive) that have 200 HSN or more.



Alternative Methods of Compliance (AMOCS)



    (g) The Manager, Engine Certification Office, FAA, has the 

authority to approve AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19.



Related Information



    (h) Refer to MCAI EASA Airworthiness Directive 2009-0090, dated 

April 28, 2009, for related information.

    (i) Contact Kevin Dickert, Aerospace Engineer, Engine 

Certification Office, FAA, Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 01803; e-mail: 

kevin.dickert@faa.gov; telephone (781) 238-7117, fax (781) 238-7199, 

for more information about this AD.



Material Incorporated by Reference



    (j) You must use the service information specified in Table 1 of 

this AD to do the actions required by this AD, unless the AD 

specifies otherwise.

    (1) The Director of the Federal Register approved the 

incorporation by reference of this service information under 5 

U.S.C. 552(a) and 1 CFR part 51.

    (2) For service information identified in this AD, contact 

Turbomeca, 40220 Tarnos, France; telephone 33 05 59 74 40 00; fax 33 

05 59 74 45 15.

    (3) You may review copies at the FAA, New England Region, 12 New 

England Executive Park, Burlington, MA; or 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.



                                   Table 1--Material Incorporated by Reference

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

Turbomeca mandatory Service Bulletin

                 No.                            Page               Version                    Date

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

298 73 0809.........................

    Total Pages: 7                    ALL....................               A  February 12, 2008.

298 73 0810.........................

    Total Pages: 7                    ALL....................               B  April 27, 2009.

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







[[Page 32262]]



    Issued in Burlington, Massachusetts, on May 24, 2010.

Peter A. White,

Assistant Manager, Engine and Propeller Directorate, Aircraft 

Certification Service.

[FR Doc. 2010-13433 Filed 6-7-10; 8:45 am]

BILLING CODE 4910-13-P
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