Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines, 50164-50166 [05-16834]

Download as PDF 50164 Federal Register / Vol. 70, No. 165 / Friday, August 26, 2005 / Rules and Regulations Issued in Renton, Washington, on August 12, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05–16750 Filed 8–25–05; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120–AA64 Airworthiness Directives; Turbomeca S.A. Arrius 2F 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 S.A. Arrius 2F turboshaft engines. This AD requires replacing certain O-rings on the check valve piston in the lubrication unit. This AD results from a report of a forced landing of a Eurocopter EC120B helicopter. We are issuing this AD to prevent an uncommanded in-flight shutdown of the engine, which could result in a forced autorotation landing and damage to the helicopter. DATES: Effective September 12, 2005. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of September 12, 2005. We must receive any comments on this AD by October 25, 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. 16:11 Aug 25, 2005 FOR FURTHER INFORMATION CONTACT: Christopher Spinney, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803–2599, telephone (781) 238–7175; fax (781) 238–7199. The Direction General De L’Aviation Civile (DGAC), which is the airworthiness authority for France, recently notified us that an unsafe condition might exist on Turbomeca S.A. Arrius 2F turboshaft engines. In addition, on May 13, 2005, an uncommanded in-flight engine shutdown (IFSD) of an Arrius 2F engine resulted in the forced landing of a Eurocopter EC120B helicopter in the Gulf of Mexico. Investigation of the engine found that an interruption of engine lubrication due to excessive swelling of the check valve O-ring in the lubrication unit caused the IFSD. The amount of swelling of the O-ring depends on the class of oil used, standard (STD) or high-thermal stability (HTS), and the engine operating time. This condition, if not corrected, could result in an uncommanded in-flight shutdown of the engine, which could result in a forced autorotation landing and damage to the helicopter. SUPPLEMENTARY INFORMATION: [Docket No. FAA–2005–22039; Directorate Identifier 2005–NE–33–AD; Amendment 39– 14238; AD 2005–17–17] VerDate Aug<18>2005 Contact Turbomeca S.A., 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. Jkt 205001 Relevant Service Information We have reviewed and approved the technical contents of Turbomeca Alert Service Bulletin (ASB) No. A319 79 4802, dated June 21, 2005, that describes procedures for replacing the O-ring on the check valve piston of the lubrication unit. The DGAC classified this alert service bulletin as mandatory and issued AD No. F–2005–122, dated July 20, 2005, in order to ensure the airworthiness of these Turbomeca S.A. Arrius 2F turboshaft engines in France. Bilateral Airworthiness Agreement This turboshaft 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 PO 00000 Frm 00016 Fmt 4700 Sfmt 4700 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 S.A. Arrius 2F turboshaft engines of the same type design. We are issuing this AD to prevent an uncommanded in-flight shutdown of the engine, which could result in a forced autorotation landing and damage to the helicopter. This AD requires replacing the O-ring on the check valve piston in the lubrication unit at the following intervals: • For engines that use HTS or an unknown class oil, within 300 hours time-since-new (TSN) or 50 hours after the effective date of this AD, whichever is later. • For engines that use STD class oil, within 450 hours TSN or 50 hours after the effective date of this AD, whichever is later. • Thereafter, replace the O-ring within 300 hours time-since-last replacement (TSR) on engines that use HTS class oil or 500 hours TSR on engines that use STD class oil. 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. Interim Action These actions are interim actions and we may take further rulemaking actions in the future. 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–2005–22039; Directorate Identifier 2005–NE–33–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. E:\FR\FM\26AUR1.SGM 26AUR1 Federal Register / Vol. 70, No. 165 / Friday, August 26, 2005 / Rules and Regulations 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 Docket Management Facility 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. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 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: ■ 50165 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: ■ 2005–17–17 Turbomeca S.A: Amendment 39–14238. Docket No. FAA–2005–22039; Directorate Identifier 2005–NE–33–AD. Effective Date (a) This airworthiness directive (AD) becomes effective September 12, 2005. Affected ADs (b) None. Applicability (c) This AD applies to Turbomeca S.A. Arrius 2F turboshaft engines. These engines are installed on, but not limited to, Eurocopter EC120B helicopters. Unsafe Condition (d) This AD results from a report of a forced landing of a Eurocopter EC120B helicopter. We are issuing this AD to prevent an uncommanded in-flight shutdown of the engine, which could result in a forced autorotation landing and damage to the helicopter. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. O-Ring Replacement (f) Replace the O-ring on the check valve piston in the lubrication unit at the intervals specified in Table 1 of this AD. Use the ‘‘Instructions to be Incorporated,’’ 2.A. through 2.C. (2) of Turbomeca Alert Service Bulletin No. A319 79 4802, dated June 21, 2005, to replace the O-ring. TABLE 1.—COMPLIANCE TIMES FOR O-RING REPLACEMENT If the class of oil is * * * Then replace the O-ring by the later of * * * Thereafter, replace the O-ring within * * * (1) HTS or unknown ......................... 300 hours time-since-new (TSN) or 50 hours after the effective date of this AD. 450 hours TSN or 50 hours after the effective date of this AD ........... 300 hours time-since-last replacement (TSR). 500 hours TSR. (2) STD ............................................. Alternative Methods of Compliance Related Information (g) 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. (h) DGAC airworthiness directive F–2005– 122, dated July 20, 2005, also addresses the subject of this AD. VerDate Aug<18>2005 16:11 Aug 25, 2005 Jkt 205001 Material Incorporated by Reference (i) You must use Turbomeca Alert Service Bulletin No. A319 79 4802, dated June 21, 2005 to perform the replacements required by this AD. The Director of the Federal Register PO 00000 Frm 00017 Fmt 4700 Sfmt 4700 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 S.A., 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, E:\FR\FM\26AUR1.SGM 26AUR1 50166 Federal Register / Vol. 70, No. 165 / Friday, August 26, 2005 / Rules and Regulations 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/federalregister/cfr/ibr-locations.html. Issued in Burlington, Massachusetts, on August 17, 2005. Richard Noll, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 05–16834 Filed 8–25–05; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2005–22196; Directorate Identifier 2005–NM–170–AD; Amendment 39–14239; AD 2005–17–18] RIN 2120–AA64 Airworthiness Directives; Airbus Model A330–200, A330–300, A340–200, and A340–300 Series Airplanes; and Model A340–541 and –642 Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; request for comments. AGENCY: Discussion SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Model A330–200, A330–300, A340–200, and A340–300 series airplanes; and Model A340–541 and –642 airplanes. This AD requires repetitively resetting the display units (DUs) for the electronic instrument system (EIS) either by switching them off and back on again or by performing a complete electrical shutdown of the airplane. This AD results from an incident in which all of the DUs for the EIS went blank simultaneously during flight. We are issuing this AD to prevent automatic reset of the DUs for the EIS during flight and consequent loss of data from the DUs, which could reduce the ability of the flightcrew to control the airplane during adverse flight conditions. DATES: This AD becomes effective September 12, 2005. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of September 12, 2005. We must receive comments on this AD by October 25, 2005. ADDRESSES: Use one of the following addresses to submit comments on this AD. VerDate Aug<18>2005 16:11 Aug 25, 2005 Jkt 205001 • 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. • 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 Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France, for service information identified in this AD. FOR FURTHER INFORMATION CONTACT: Tim Backman, Aerospace Engineer, International Branch, ANM–116, FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington 98055–4056; telephone (425) 227–2797; fax (425) 227–1149. SUPPLEMENTARY INFORMATION: ´ ´ The Direction Generale de l’Aviation Civile (DGAC), which is the airworthiness authority for France, notified us that an unsafe condition may exist on certain Airbus Model A330– 200, A330–300, A340–200, and A340– 300 series airplanes; and A340–541 and –642 airplanes. The DGAC advises of an incident that occurred on a Model A330 series airplane, in which all six of the liquid crystal display units (DUs) for the electronic instrument system (EIS) (which is equipped with the EIS2 software standard) went blank simultaneously during flight. The DUs recovered automatically after approximately 40 seconds. This incident was attributed to an automatic reset function of the DUs. (After the DUs have been continuously powered for more than 6 days, an internal timer automatically resets them.) This condition, if not corrected, could result in loss of data from the DUs, which could reduce the ability of the flightcrew to control the airplane during adverse flight conditions. Relevant Service Information Airbus has issued All Operator Telexes (AOTs) A330–31A3092 (for Model A330–200 and –300 series airplanes), A340–31A4102 (for Model A340–200 and –300 series airplanes), and A340–31A5023 (for Model A340– 541 and –642 airplanes), all dated PO 00000 Frm 00018 Fmt 4700 Sfmt 4700 August 1, 2005. The AOTs are effective for airplanes of the identified models on which the EIS is equipped with the EIS2 software standard, version L4–1 or L–5. The AOTs describe procedures for resetting the DUs for the EIS by switching them off, waiting 5 seconds or longer, then switching the DUs back on again. The DGAC mandated the AOTs and issued French emergency airworthiness directive UF–2005–150, dated August 10, 2005, to ensure the continued airworthiness of these airplanes in France. FAA’s Determination and Requirements of This AD These airplane models are manufactured in France and are 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. Pursuant to this bilateral airworthiness agreement, the DGAC has kept the FAA informed of the situation described above. We have examined the DGAC’s findings, evaluated all pertinent information, and determined that we need to issue an AD for products of this type design that are certificated for operation in the United States. Therefore, we are issuing this AD to prevent automatic reset of the DUs for the EIS during flight and consequent loss of data from the DUs, which could reduce the ability of the flightcrew to control the airplane during adverse flight conditions. This AD requires repetitively resetting the DUs for the EIS either by accomplishing the actions specified in the AOTs described previously, or by performing a complete electrical shutdown of the airplane. We have determined that switching the DUs off and back on again may be properly performed by flight deck crew (or by certificated maintenance personnel) because this action does not require tools, precision measuring equipment, training, or pilot logbook endorsements, or the use of or reference to technical data that are not contained in the body of the AD. Interim Action We consider this AD interim action. The manufacturer is currently developing a modification that will address the unsafe condition identified in this AD. Once this modification is developed, approved, and available, we may consider additional rulemaking. FAA’s Determination of the Effective Date An unsafe condition exists that requires the immediate adoption of this E:\FR\FM\26AUR1.SGM 26AUR1

Agencies

[Federal Register Volume 70, Number 165 (Friday, August 26, 2005)]
[Rules and Regulations]
[Pages 50164-50166]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-16834]

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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-22039; Directorate Identifier 2005-NE-33-AD;
Amendment 39-14238; AD 2005-17-17]
RIN 2120-AA64

Airworthiness Directives; Turbomeca S.A. Arrius 2F 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 S.A. Arrius 2F turboshaft engines. This AD requires replacing
certain O-rings on the check valve piston in the lubrication unit. This
AD results from a report of a forced landing of a Eurocopter EC120B
helicopter. We are issuing this AD to prevent an uncommanded in-flight
shutdown of the engine, which could result in a forced autorotation
landing and damage to the helicopter.

DATES: Effective September 12, 2005. The Director of the Federal
Register approved the incorporation by reference of certain
publications listed in the regulations as of September 12, 2005.
We must receive any comments on this AD by October 25, 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 S.A., 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 01803-2599,
telephone (781) 238-7175; fax (781) 238-7199.

SUPPLEMENTARY INFORMATION: The Direction General De L'Aviation Civile
(DGAC), which is the airworthiness authority for France, recently
notified us that an unsafe condition might exist on Turbomeca S.A.
Arrius 2F turboshaft engines. In addition, on May 13, 2005, an
uncommanded in-flight engine shutdown (IFSD) of an Arrius 2F engine
resulted in the forced landing of a Eurocopter EC120B helicopter in the
Gulf of Mexico. Investigation of the engine found that an interruption
of engine lubrication due to excessive swelling of the check valve O-
ring in the lubrication unit caused the IFSD. The amount of swelling of
the O-ring depends on the class of oil used, standard (STD) or high-
thermal stability (HTS), and the engine operating time. This condition,
if not corrected, could result in an uncommanded in-flight shutdown of
the engine, which could result in a forced autorotation landing and
damage to the helicopter.

Relevant Service Information

We have reviewed and approved the technical contents of Turbomeca
Alert Service Bulletin (ASB) No. A319 79 4802, dated June 21, 2005,
that describes procedures for replacing the O-ring on the check valve
piston of the lubrication unit. The DGAC classified this alert service
bulletin as mandatory and issued AD No. F-2005-122, dated July 20,
2005, in order to ensure the airworthiness of these Turbomeca S.A.
Arrius 2F turboshaft engines in France.

Bilateral Airworthiness Agreement

This turboshaft 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 S.A. Arrius 2F turboshaft engines of the
same type design. We are issuing this AD to prevent an uncommanded in-
flight shutdown of the engine, which could result in a forced
autorotation landing and damage to the helicopter. This AD requires
replacing the O-ring on the check valve piston in the lubrication unit
at the following intervals:
For engines that use HTS or an unknown class oil, within
300 hours time-since-new (TSN) or 50 hours after the effective date of
this AD, whichever is later.
For engines that use STD class oil, within 450 hours TSN
or 50 hours after the effective date of this AD, whichever is later.
Thereafter, replace the O-ring within 300 hours time-
since-last replacement (TSR) on engines that use HTS class oil or 500
hours TSR on engines that use STD class oil.
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.

Interim Action

These actions are interim actions and we may take further
rulemaking actions in the future.

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-2005-22039;
Directorate Identifier 2005-NE-33-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.

[[Page 50165]]

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 Docket Management Facility 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.

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]

0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:

2005-17-17 Turbomeca S.A: Amendment 39-14238. Docket No. FAA-2005-
22039; Directorate Identifier 2005-NE-33-AD.

Effective Date

(a) This airworthiness directive (AD) becomes effective
September 12, 2005.

Affected ADs

(b) None.

Applicability

(c) This AD applies to Turbomeca S.A. Arrius 2F turboshaft
engines. These engines are installed on, but not limited to,
Eurocopter EC120B helicopters.

Unsafe Condition

(d) This AD results from a report of a forced landing of a
Eurocopter EC120B helicopter. We are issuing this AD to prevent an
uncommanded in-flight shutdown of the engine, which could result in
a forced autorotation landing and damage to the helicopter.

Compliance

(e) You are responsible for having the actions required by this
AD performed within the compliance times specified unless the
actions have already been done.

O-Ring Replacement

(f) Replace the O-ring on the check valve piston in the
lubrication unit at the intervals specified in Table 1 of this AD.
Use the ``Instructions to be Incorporated,'' 2.A. through 2.C. (2)
of Turbomeca Alert Service Bulletin No. A319 79 4802, dated June 21,
2005, to replace the O-ring.

Table 1.--Compliance Times for O-Ring Replacement
----------------------------------------------------------------------------------------------------------------
Thereafter, replace the O-
If the class of oil is * * * Then replace the O-ring by the later of * * * ring within * * *
----------------------------------------------------------------------------------------------------------------
(1) HTS or unknown................. 300 hours time-since-new (TSN) or 50 hours 300 hours time-since-last
after the effective date of this AD. replacement (TSR).
(2) STD............................ 450 hours TSN or 50 hours after the effective 500 hours TSR.
date of this AD.
----------------------------------------------------------------------------------------------------------------

Alternative Methods of Compliance

(g) 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

(h) DGAC airworthiness directive F-2005-122, dated July 20,
2005, also addresses the subject of this AD.

Material Incorporated by Reference

(i) You must use Turbomeca Alert Service Bulletin No. A319 79
4802, dated June 21, 2005 to perform the replacements 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 S.A.,
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,

[[Page 50166]]

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 August 17, 2005.
Richard Noll,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 05-16834 Filed 8-25-05; 8:45 am]
BILLING CODE 4910-13-P

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