Airworthiness Directives; Turbomeca Arrius 2 F Turboshaft Engines, 54622-54624 [05-18322]

Download as PDF 54622 Federal Register / Vol. 70, No. 179 / Friday, September 16, 2005 / Rules and Regulations number (SN), use Table 4 to verify the crankshaft SN. (2) If Table 4 of Lycoming MSB No. 566, dated July 11, 2005, lists your crankshaft SN, replace the crankshaft with a crankshaft that is not listed in Table 4 of Lycoming MSB No. 566, dated July 11, 2005. AEIO–360, IO–360, O–360, LIO–360, and LO–360 Series Engines Manufactured New or Rebuilt, Overhauled, or That Had a Crankshaft Installed After March 1, 1999 (h) For AEIO–360, IO–360, O–360, LIO– 360, and LO–360 series engines manufactured new or rebuilt, overhauled, or that had a crankshaft installed after March 1, 1999, do the following: (1) If Table 3 of Lycoming MSB No. 566, dated July 11, 2005, lists your engine SN, use Table 4 to verify the crankshaft SN. (2) If Table 4 of Lycoming MSB No. 566, dated July 11, 2005, lists your crankshaft SN, replace the crankshaft with a crankshaft that is not listed in Table 4 of Lycoming MSB No. 566, dated July 11, 2005. Prohibition Against Installing Certain Crankshafts (i) After the effective date of this AD, do not install any crankshaft that has a SN listed in Table 4 of Lycoming MSB No. 566, dated July 11, 2005, into any engine. Alternative Methods of Compliance (AMOCs) (j) The Manager, New York Aircraft Certification Office, has the authority to approve AMOCs for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (k) None. Material Incorporated by Reference (l) You must use Lycoming Mandatory Service Bulletin No. 566, dated July 11, 2005, to perform the actions required by this AD. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Lycoming, 652 Oliver Street, Williamsport, PA 17701; telephone (570) 323–6181; fax (570) 327–7101, or on the Internet at https:// www.Lycoming.Textron.com for a copy of this service information. You may review copies at the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC 20590–0001, on the Internet at https://dms.dot.gov, 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. Issued in Burlington, Massachusetts, on September 9, 2005. Jay J. Pardee, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 05–18323 Filed 9–15–05; 8:45 am] BILLING CODE 4910–13–P VerDate Aug<31>2005 15:20 Sep 15, 2005 Jkt 205001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2005–22430; Directorate Identifier 2005–NE–34–AD; Amendment 39– 14275; AD 2005–19–10] RIN 2120–AA64 Airworthiness Directives; Turbomeca Arrius 2 F Turboshaft Engines Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; request for comments. AGENCY: SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Turbomeca Arrius 2 F turboshaft engines. This AD requires removing from service certain serial number (SN) fuel control units (FCUs) or replacing the constant delta pressure diaphragm in those FCUs. This AD results from a report of an accident in July 2005 involving a Eurocopter EC120B helicopter. We are issuing this AD to prevent an uncommanded engine inflight shutdown on a single-engine helicopter, resulting in a forced autorotation landing or an accident. DATES: Effective October 3, 2005. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of October 3, 2005. We must receive any comments on this AD by November 15, 2005. ADDRESSES: Use one of the following addresses to comment on this AD: • DOT Docket Web site: Go to https://dms.dot.gov and follow the instructions for sending your comments electronically. • Government-wide rulemaking Web site: Go to https://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC 20590– 0001. • Fax: (202) 493–2251. • Hand Delivery: Room PL–401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. Contact Turbomeca, 40220 Tarnos, France; telephone +33 05 59 74 40 00, fax +33 05 59 74 45 15, for the service information identified in this AD. FOR FURTHER INFORMATION CONTACT: Christopher Spinney, Aerospace PO 00000 Frm 00014 Fmt 4700 Sfmt 4700 Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803–5299; telephone (781) 238–7175; fax (781) 238–7199. The Direction Generale de L’Aviation Civile (DGAC), which is the airworthiness authority for France, notified the FAA that an unsafe condition may exist on Turbomeca Arrius 2 F turboshaft engines. The DGAC advises that a Eurocopter EC120B helicopter powered by an Arrius 2 F turboshaft engine experienced an uncommanded in-flight engine shutdown. An increase in fuel flow led to an increase in gas generator and power turbine speeds. Turbine blades separated from the disk due to the overspeed. Turbomeca determined that the fuel flow increase was caused by an improperly assembled and subsequent failure of the constant delta pressure (delta P) diaphragm in the FCU. Only certain types of constant delta P diaphragms have been identified as being capable of being improperly assembled. Engine serial numbers that may have this type of constant delta P diaphragm are listed in Turbomeca Alert Mandatory Service Bulletin (MSB) No. A319 73 4825, dated August 3, 2005. The manufacturer is making spare FCUs available as fast as possible and has established a rotable pool of spares. After we reviewed the Turbomeca SB, we concluded that using the Turbomeca rotable pool of spares as soon as practicable effectively manages the risk of another failure of the uninspected engine population. To this end, we are requiring that FCUs identified in the Turbomeca SB be replaced as soon as practicable but not to exceed February 28, 2006. Because the practicable compliance time may be quite short for some operators and the rotable pool requires consistent participation, we are issuing this AD as final rule; request for comments. SUPPLEMENTARY INFORMATION: Relevant Service Information We have reviewed and approved the technical contents of Turbomeca Alert MSB No. A319 73 4825, dated August 3, 2005. That MSB lists the affected FCUs by SN and describes procedures for removing affected FCUs from service or replacing constant delta P diaphragms in those FCUs. The DGAC classified this service bulletin as mandatory and issued AD No. F–2005– 143, dated August 17, 2005, and AD No. F–2005–143 R1, dated August 31, 2005, in order to ensure the airworthiness of these Arrius 2 F turboshaft engines in France. E:\FR\FM\16SER1.SGM 16SER1 Federal Register / Vol. 70, No. 179 / Friday, September 16, 2005 / Rules and Regulations Bilateral Airworthiness Agreement This engine model is manufactured in France and is type certificated for operation in the United States under the provisions of section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and the applicable bilateral airworthiness agreement. Under this bilateral airworthiness agreement, the DGAC kept the FAA informed of the situation described above. We have examined the findings of the DGAC, reviewed all available information, and determined that AD action is necessary for products of this type design that are certificated for operation in the United States. FAA’s Determination and Requirements of this AD The unsafe condition described previously is likely to exist or develop on other Turbomeca Arrius 2 F turboshaft engines of the same type design. We are issuing this AD to prevent an uncommanded engine inflight shutdown on a single-engine helicopter, resulting in a forced autorotation landing or an accident. This AD requires removing from service certain SN FCUs or replacing the constant delta P diaphragm in those FCUs. You must use the service information described previously to perform the actions required by this AD. FAA’s Determination of the Effective Date Since an unsafe condition exists that requires the immediate adoption of this AD, we have found that notice and opportunity for public comment before issuing this AD are impracticable, and that good cause exists for making this amendment effective in less than 30 days. Comments Invited This AD is a final rule that involves requirements affecting flight safety and was not preceded by notice and an opportunity for public comment; however, we invite you to send us any written relevant data, views, or arguments regarding this AD. Send your comments to an address listed under ADDRESSES. Include ‘‘AD Docket No. FAA–2005–22430; Directorate Identifier 2005–NE–34–AD’’ in the subject line of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the rule that might suggest a need to modify it. We will post all comments we receive, without change, to https:// dms.dot.gov, including any personal information you provide. We will also post a report summarizing each VerDate Aug<31>2005 15:20 Sep 15, 2005 Jkt 205001 54623 substantive verbal contact with FAA personnel concerning this AD. Using the search function of the DMS Web site, anyone can find and read the comments in any of our dockets, including the name of the individual who sent the comment (or signed the comment on behalf of an association, business, labor union, etc.). You may review the DOT’s complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477–78) or you may visit https://dms.dot.gov. 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 summary of the costs to comply with this AD and placed it in the AD Docket. You may get a copy of this summary by sending a request to us at the address listed under ADDRESSES. Examining the AD Docket You may examine the docket that contains the AD, any comments received, and any final disposition in person at the Docket Management Facility Docket Offices between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Office (telephone (800) 647–5227) is located on the plaza level of the Department of Transportation Nassif Building at the street address stated in ADDRESSES. Comments will be available in the AD docket shortly after the DMS receives them. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 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 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 the regulation: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866; PO 00000 Frm 00015 Fmt 4700 Sfmt 4700 Adoption of the Amendment Under the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: I PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: I 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: 2005–19–10 Turbomeca: Amendment 39– 14275. Docket No. FAA–2005–22430; Directorate Identifier 2005–NE–34–AD. Effective Date (a) This airworthiness directive (AD) becomes effective October 3, 2005. Affected ADs (b) None. Applicability (c) This AD applies to Turbomeca Arrius 2 F turboshaft engines with the fuel control units listed by serial number (SN) in Turbomeca Alert Mandatory Service Bulletin (MSB) No. A319 73 4825, dated August 3, 2005. These engines are installed on, but not limited to, Eurocopter EC120B helicopters. Unsafe Condition (d) This AD results from a report of an accident in July 2005 involving a Eurocopter EC120B helicopter. We are issuing this AD to prevent an uncommanded engine in-flight shutdown on a single-engine helicopter, resulting in a forced autorotation landing or an accident. Compliance (e) You are responsible for having the actions required by this AD performed as soon as practicable after the effective date of this AD but no later than February 28, 2006, unless the actions have already been done. (f) Remove FCUs listed by serial number (SN) in Turbomeca Alert Mandatory Service E:\FR\FM\16SER1.SGM 16SER1 54624 Federal Register / Vol. 70, No. 179 / Friday, September 16, 2005 / Rules and Regulations Bulletin (MSB) No. A319 73 4825, dated August 3, 2005. (g) Install an FCU not listed in Turbomeca Alert MSB No. A319 73 4825, dated August 3, 2005; or one with a new constant delta pressure diaphragm installed using paragraph 2.B. of Turbomeca Alert MSB No. A319 73 4825, dated August 3, 2005. Alternative Methods of Compliance (h) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (i) DGAC airworthiness directives No. F– 2005–143, dated August 17, 2005, and No. F– 2005–143 R1, dated August 31, 2005, also address the subject of this AD. Material Incorporated by Reference (j) You must use Turbomeca Alert Mandatory Service Bulletin (MSB) No. A319 73 4825, dated August 3, 2005, to perform the actions required by this AD. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Turbomeca, 40220 Tarnos, France; telephone +33 05 59 74 40 00, fax +33 05 59 74 45 15, for a copy of this service information. You may review copies at the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC 20590–0001, on the Internet at https://dms.dot.gov; 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. Issued in Burlington, Massachusetts, on September 9, 2005. Jay J. Pardee, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 05–18322 Filed 9–15–05; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 97 [Docket No. 30456 ; Amdt. No. 3133 ] Standard Instrument Approach Procedures, Weather Takeoff Minimums; Miscellaneous Amendments Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: SUMMARY: This amendment establishes, amends, suspends, or revokes Standard Instrument Approach Procedures VerDate Aug<31>2005 15:20 Sep 15, 2005 Jkt 205001 (SIAPs) and/or Weather Takeoff Minimums for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, addition of new obstacles, or changes in air traffic requirements. These changes are designed to provide safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports. This rule is effective September 16, 2005. The compliance date for each SIAP and/or Weather Takeoff Minimums is specified in the amendatory provisions. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of September 16, 2005. ADDRESSES: Availability of matters incorporated by reference in the amendment is as follows: For Examination— 1. FAA Rules Docket, FAA Headquarters Building, 800 Independence Avenue, SW., Washington, DC 20591; 2. The FAA Regional Office of the region in which the affected airport is located; 3. The National Flight Procedures Office, 6500 South MacArthur Blvd., Oklahoma City, OK 73169 or, 4. 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. For Purchase—Individual SIAP and Weather Takeoff Minimums copies may be obtained from: 1. FAA Public Inquiry Center (APA– 200), FAA Headquarters Building, 800 Independence Avenue, SW., Washington, DC 20591; or 2. The FAA Regional Office of the region in which the affected airport is located. By Subscription—Copies of all SIAPs and Weather Takeoff Minimums mailed once every 2 weeks, are for sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. FOR FURTHER INFORMATION CONTACT: Donald P. Pate, Flight Procedure Standards Branch (AFS–420), Flight Technologies and Programs Division, Flight Standards Service, Federal DATES: PO 00000 Frm 00016 Fmt 4700 Sfmt 4700 Aviation Administration, Mike Monroney Aeronautical Center, 6500 South MacArthur Blvd. Oklahoma City, OK. 73169 (Mail Address: P.O. Box 25082 Oklahoma City, OK. 73125) telephone: (405) 954–4164. SUPPLEMENTARY INFORMATION: This amendment to Title 14 of the Code of Federal Regulations, Part 97 (14 CFR part 97), establishes, amends, suspends, or revokes SIAPs and/or Weather Takeoff Minimums. The complete regulatory description of each SIAP and/or Weather Takeoff Minimums is contained in official FAA form documents which are incorporated by reference in this amendment under 5 U.S.C. 552(a), 1 CFR part 51, and 14 CFR part 97.20. The applicable FAA Forms are identified as FAA Forms 8260–3, 8260–4, 8260–5 and 8260–15A. Materials incorporated by reference are available for examination or purchase as stated above. The large number of SIAPs and/or Weather Takeoff Minimums, their complex nature, and the need for a special format make their verbatim publication in the Federal Register expensive and impractical. Further, airmen do not use the regulatory text of the SIAPs and/or Weather Takeoff Minimums but refer to their depiction on charts printed by publishers of aeronautical materials. Thus, the advantages of incorporation by reference are realized and publication of the complete description of each SIAP and/ or Weather Takeoff Minimums contained in FAA form documents is unnecessary. The provisions of this amendment state the affected CFR sections, with the types and effective dates of the SIAPs and/or Weather Takeoff Minimums. This amendment also identifies the airport, its location, the procedure identification and the amendment number. The Rule This amendment to 14 CFR part 97 is effective upon publication of each separate SIAP and/or Weather Takeoff Minimums as contained in the transmittal. Some SIAP and/or Weather Takeoff Minimums amendments may have been previously issued by the FAA in a Flight Data Center (FDC) Notice to Airmen (NOTAM) as an emergency action of immediate flight safety relating directly to published aeronautical charts. The circumstances which created the need for some SIAP, and/or Weather Takeoff Minimums amendments may require making them effective in less than 30 days. For the remaining SIAPs and/or Weather Takeoff Minimums, an effective date at E:\FR\FM\16SER1.SGM 16SER1

Agencies

[Federal Register Volume 70, Number 179 (Friday, September 16, 2005)]
[Rules and Regulations]
[Pages 54622-54624]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-18322]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-22430; Directorate Identifier 2005-NE-34-AD; 
Amendment 39-14275; AD 2005-19-10]
RIN 2120-AA64


Airworthiness Directives; Turbomeca Arrius 2 F Turboshaft Engines

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule; request for comments.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
Turbomeca Arrius 2 F turboshaft engines. This AD requires removing from 
service certain serial number (SN) fuel control units (FCUs) or 
replacing the constant delta pressure diaphragm in those FCUs. This AD 
results from a report of an accident in July 2005 involving a 
Eurocopter EC120B helicopter. We are issuing this AD to prevent an 
uncommanded engine in-flight shutdown on a single-engine helicopter, 
resulting in a forced autorotation landing or an accident.

DATES: Effective October 3, 2005. The Director of the Federal Register 
approved the incorporation by reference of certain publications listed 
in the regulations as of October 3, 2005.
    We must receive any comments on this AD by November 15, 2005.

ADDRESSES: Use one of the following addresses to comment on this AD:
     DOT Docket Web site: Go to https://dms.dot.gov and follow 
the instructions for sending your comments electronically.
     Government-wide rulemaking Web site: Go to https://
www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility; U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, 
Washington, DC 20590-0001.
     Fax: (202) 493-2251.
     Hand Delivery: Room PL-401 on the plaza level of the 
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    Contact Turbomeca, 40220 Tarnos, France; telephone +33 05 59 74 40 
00, fax +33 05 59 74 45 15, for the service information identified in 
this AD.

FOR FURTHER INFORMATION CONTACT: Christopher Spinney, Aerospace 
Engineer, Engine Certification Office, FAA, Engine and Propeller 
Directorate, 12 New England Executive Park, Burlington, MA 01803-5299; 
telephone (781) 238-7175; fax (781) 238-7199.

SUPPLEMENTARY INFORMATION: The Direction Generale de L'Aviation Civile 
(DGAC), which is the airworthiness authority for France, notified the 
FAA that an unsafe condition may exist on Turbomeca Arrius 2 F 
turboshaft engines. The DGAC advises that a Eurocopter EC120B 
helicopter powered by an Arrius 2 F turboshaft engine experienced an 
uncommanded in-flight engine shutdown. An increase in fuel flow led to 
an increase in gas generator and power turbine speeds. Turbine blades 
separated from the disk due to the overspeed. Turbomeca determined that 
the fuel flow increase was caused by an improperly assembled and 
subsequent failure of the constant delta pressure (delta P) diaphragm 
in the FCU. Only certain types of constant delta P diaphragms have been 
identified as being capable of being improperly assembled. Engine 
serial numbers that may have this type of constant delta P diaphragm 
are listed in Turbomeca Alert Mandatory Service Bulletin (MSB) No. A319 
73 4825, dated August 3, 2005. The manufacturer is making spare FCUs 
available as fast as possible and has established a rotable pool of 
spares. After we reviewed the Turbomeca SB, we concluded that using the 
Turbomeca rotable pool of spares as soon as practicable effectively 
manages the risk of another failure of the uninspected engine 
population. To this end, we are requiring that FCUs identified in the 
Turbomeca SB be replaced as soon as practicable but not to exceed 
February 28, 2006. Because the practicable compliance time may be quite 
short for some operators and the rotable pool requires consistent 
participation, we are issuing this AD as final rule; request for 
comments.

Relevant Service Information

    We have reviewed and approved the technical contents of Turbomeca 
Alert MSB No. A319 73 4825, dated August 3, 2005. That MSB lists the 
affected FCUs by SN and describes procedures for removing affected FCUs 
from service or replacing constant delta P diaphragms in those FCUs. 
The DGAC classified this service bulletin as mandatory and issued AD 
No. F-2005-143, dated August 17, 2005, and AD No. F-2005-143 R1, dated 
August 31, 2005, in order to ensure the airworthiness of these Arrius 2 
F turboshaft engines in France.

[[Page 54623]]

Bilateral Airworthiness Agreement

    This engine model is manufactured in France and is type 
certificated for operation in the United States under the provisions of 
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and 
the applicable bilateral airworthiness agreement. Under this bilateral 
airworthiness agreement, the DGAC kept the FAA informed of the 
situation described above. We have examined the findings of the DGAC, 
reviewed all available information, and determined that AD action is 
necessary for products of this type design that are certificated for 
operation in the United States.

FAA's Determination and Requirements of this AD

    The unsafe condition described previously is likely to exist or 
develop on other Turbomeca Arrius 2 F turboshaft engines of the same 
type design. We are issuing this AD to prevent an uncommanded engine 
in-flight shutdown on a single-engine helicopter, resulting in a forced 
autorotation landing or an accident. This AD requires removing from 
service certain SN FCUs or replacing the constant delta P diaphragm in 
those FCUs. You must use the service information described previously 
to perform the actions required by this AD.

FAA's Determination of the Effective Date

    Since an unsafe condition exists that requires the immediate 
adoption of this AD, we have found that notice and opportunity for 
public comment before issuing this AD are impracticable, and that good 
cause exists for making this amendment effective in less than 30 days.

Comments Invited

    This AD is a final rule that involves requirements affecting flight 
safety and was not preceded by notice and an opportunity for public 
comment; however, we invite you to send us any written relevant data, 
views, or arguments regarding this AD. Send your comments to an address 
listed under ADDRESSES. Include ``AD Docket No. FAA-2005-22430; 
Directorate Identifier 2005-NE-34-AD'' in the subject line of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of the rule that might 
suggest a need to modify it.
    We will post all comments we receive, without change, to https://
dms.dot.gov, including any personal information you provide. We will 
also post a report summarizing each substantive verbal contact with FAA 
personnel concerning this AD. Using the search function of the DMS Web 
site, anyone can find and read the comments in any of our dockets, 
including the name of the individual who sent the comment (or signed 
the comment on behalf of an association, business, labor union, etc.). 
You may review the DOT's complete Privacy Act Statement in the Federal 
Register published on April 11, 2000 (65 FR 19477-78) or you may visit 
https://dms.dot.gov.

Examining the AD Docket

    You may examine the docket that contains the AD, any comments 
received, and any final disposition in person at the Docket Management 
Facility Docket Offices between 9 a.m. and 5 p.m., Monday through 
Friday, except Federal holidays. The Docket Office (telephone (800) 
647-5227) is located on the plaza level of the Department of 
Transportation Nassif Building at the street address stated in 
ADDRESSES. Comments will be available in the AD docket shortly after 
the DMS receives them.

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 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 the 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); 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 by 
sending a request to us 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

0
Under the authority delegated to me by the Administrator, the Federal 
Aviation Administration 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]2. The FAA amends Sec.  39.13 by adding the 
following new airworthiness directive:

2005-19-10 Turbomeca: Amendment 39-14275. Docket No. FAA-2005-22430; 
Directorate Identifier 2005-NE-34-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective October 
3, 2005.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Turbomeca Arrius 2 F turboshaft engines 
with the fuel control units listed by serial number (SN) in 
Turbomeca Alert Mandatory Service Bulletin (MSB) No. A319 73 4825, 
dated August 3, 2005. These engines are installed on, but not 
limited to, Eurocopter EC120B helicopters.

Unsafe Condition

    (d) This AD results from a report of an accident in July 2005 
involving a Eurocopter EC120B helicopter. We are issuing this AD to 
prevent an uncommanded engine in-flight shutdown on a single-engine 
helicopter, resulting in a forced autorotation landing or an 
accident.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed as soon as practicable after the effective date of this 
AD but no later than February 28, 2006, unless the actions have 
already been done.
    (f) Remove FCUs listed by serial number (SN) in Turbomeca Alert 
Mandatory Service

[[Page 54624]]

Bulletin (MSB) No. A319 73 4825, dated August 3, 2005.
    (g) Install an FCU not listed in Turbomeca Alert MSB No. A319 73 
4825, dated August 3, 2005; or one with a new constant delta 
pressure diaphragm installed using paragraph 2.B. of Turbomeca Alert 
MSB No. A319 73 4825, dated August 3, 2005.

Alternative Methods of Compliance

    (h) The Manager, Engine Certification Office, has the authority 
to approve alternative methods of compliance for this AD if 
requested using the procedures found in 14 CFR 39.19.

Related Information

    (i) DGAC airworthiness directives No. F-2005-143, dated August 
17, 2005, and No. F-2005-143 R1, dated August 31, 2005, also address 
the subject of this AD.

Material Incorporated by Reference

    (j) You must use Turbomeca Alert Mandatory Service Bulletin 
(MSB) No. A319 73 4825, dated August 3, 2005, to perform the actions 
required by this AD. The Director of the Federal Register approved 
the incorporation by reference of this service bulletin in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact 
Turbomeca, 40220 Tarnos, France; telephone +33 05 59 74 40 00, fax 
+33 05 59 74 45 15, for a copy of this service information. You may 
review copies at the Docket Management Facility; U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-
401, Washington, DC 20590-0001, on the Internet at https://
dms.dot.gov; 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.

    Issued in Burlington, Massachusetts, on September 9, 2005.
Jay J. Pardee,
Manager, Engine and Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 05-18322 Filed 9-15-05; 8:45 am]
BILLING CODE 4910-13-P
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