Airworthiness Directives; Turbomeca S.A. Arriel 2B and 2B1 Turboshaft Engines, 26681-26683 [2010-11324]

Download as PDF 26681 Proposed Rules Federal Register Vol. 75, No. 91 Wednesday, May 12, 2010 This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. FEDERAL DEPOSIT INSURANCE CORPORATION 12 CFR Part 327 RIN 3064–AD57 Assessments AGENCY: Federal Deposit Insurance Corporation (FDIC). ACTION: Clarification of notice of proposed rulemaking and request for comment. WReier-Aviles on DSKGBLS3C1PROD with PROPOSALS SUMMARY: The FDIC proposes to amend 12 CFR part 327 to revise the assessment system applicable to large institutions to better differentiate institutions by taking a more forward-looking view of risk; to better take into account the losses that the FDIC will incur if an institution fails; to revise the initial base assessment rates for all insured depository institutions; and to make technical and other changes to the rules governing the risk-based assessment system. DATES: Comments on the notice of proposed rulemaking published May 3, 2010 (75 FR 23516) must be received by July 2, 2010. ADDRESSES: You may submit comments, identified by RIN number, by any of the following methods: • Agency Web site: https:// www.fdic.gov/regulations/laws/federal/ propose.html. Follow instructions for submitting comments on the Agency Web Site. • E-mail: Comments@FDIC.gov. Include the RIN number in the subject line of the message. • Mail: Robert E. Feldman, Executive Secretary, Attention: Comments, Federal Deposit Insurance Corporation, 550 17th Street, NW., Washington, DC 20429. • Hand Delivery/Courier: Guard station at the rear of the 550 17th Street Building (located on F Street) on business days between 7 a.m. and 5 p.m. Instructions: All submissions received must include the agency name and RIN for this rulemaking. Comments will be posted only to the extent practicable VerDate Mar<15>2010 13:12 May 11, 2010 Jkt 220001 and, in some instances, the FDIC may post summaries of categories of comments, with the comments themselves available in the FDIC’s reading room. Comments will be posted at: https://www.fdic.gov/regulations/ laws/federal/propose.html, including any personal information provided with the comment. FOR FURTHER INFORMATION CONTACT: Lisa Ryu, Chief, Large Bank Pricing Section, Division of Insurance and Research, (202) 898–3538; Heather L. Etner, Financial Analyst, Banking and Regulatory Policy Section, Division of Insurance and Research, (202) 898– 6796; Robert L. Burns, Chief, Exam Support and Analysis, Division of Supervision and Consumer Protection (704) 333–3132 x 4215; Christopher Bellotto, Counsel, Legal Division, (202) 898–3801; Sheikha Kapoor, Senior Attorney, Legal Division, (202) 898– 3960. On May 3, 2010, the Federal Deposit Insurance Corporation published a Notice of Proposed Rulemaking and Request for Comment relating to Assessments in the Federal Register. The due date for comments was inadvertently expressed as 60 days following publication, instead of the correct date of July 2, 2010. SUPPLEMENTARY INFORMATION: Dated at Washington, DC, this 6th day of May 2010. Federal Deposit Insurance Corporation. Robert E. Feldman, Executive Secretary. [FR Doc. 2010–11176 Filed 5–11–10; 8:45 am] BILLING CODE 6714–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2007–28077; Directorate Identifier 2007–NE–20–AD] RIN 2120–AA64 Airworthiness Directives; Turbomeca S.A. Arriel 2B and 2B1 Turboshaft Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 SUMMARY: We propose to revise an existing airworthiness directive (AD) for the products listed above. This proposed 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: Since issuance ´ of AD 2007–0109, Turbomeca has released modification TU166 which consists in inserting HP blade dampers between the HP disc and the HP blade platform. Introduction of these dampers has demonstrated to limit axial displacement of the HP blade relative to the disk in case of blade lock rupture or opening, therefore eliminating the need for inspection and replacement. We are proposing this AD to prevent an uncommanded in-flight engine shutdown which could result in an emergency autorotation landing or an accident. DATES: We must receive comments on this proposed AD by June 28, 2010. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility, U.S. Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. • Fax: (202) 493–2251. 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 proposed AD. 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 proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is the same as the Mail address provided in E:\FR\FM\12MYP1.SGM 12MYP1 26682 Federal Register / Vol. 75, No. 91 / Wednesday, May 12, 2010 / Proposed Rules the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. 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: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2007–28077; Directorate Identifier 2007–NE–20–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD based on those comments. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA personnel concerning this proposed AD. Using the search function of the Web site, anyone can find and read the comments in any of our dockets, including, if provided, 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). Discussion On April 16, 2009, the FAA issued AD 2009–09–03, Amendment 39–15889 (74 FR 18981, April 27, 2009). That AD requires performing an initial and repetitive borescope inspection of the engine for rearward displacement of the high-pressure turbine (HP) blades. WReier-Aviles on DSKGBLS3C1PROD with PROPOSALS Actions Since AD 2009–09–03 Was Issued 13:12 May 11, 2010 Jkt 220001 You may obtain further information by examining the MCAI in the AD docket. Relevant Service Information Turbomeca S.A. has issued Mandatory Service Bulletin No. 292 72 2825, Version B, dated September 21, 2009. The actions described in this service information are intended to correct the unsafe condition identified in the EASA AD. FAA’s Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of France, and is approved for operation in the United States. Pursuant to our bilateral agreement with France, they have notified us of the unsafe condition described in the EASA AD and service information referenced above. We are proposing this AD because we evaluated all information provided by EASA, and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. This proposed AD would require inspecting for HP blade rearward displacement. Differences Between This AD and the MCAI or Service Information We have reviewed the MCAI and related service information and, in general, agree with their substance. But we required different actions in this AD from those in the MCAI in order to follow FAA policies. Any such differences are described in a separate paragraph of the AD. These requirements take precedence over the actions copied from the MCAI. Costs of Compliance Since that AD was issued, the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2007–0109R1, dated November 9, 2009 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: VerDate Mar<15>2010 Since issuance of AD 2007–0109, ´ Turbomeca has released modification TU166 which consists in inserting HP blade dampers between the HP disc and the HP blade platform. Introduction of these dampers has demonstrated to limit axial displacement of the HP blade relative to the disk in case of blade lock rupture or opening, therefore eliminating the need for inspection and replacement. Therefore, this AD revises AD 2007–0109 by retaining the same requirements of AD 2007–0109 except that applicability is limited to ARRIEL 2B, 2B1 and 2B1A engines which do not incorporate modification TU166. Based on the service information, we estimate that this proposed AD would affect about 248 products of U.S. registry. We also estimate that it would take about 2 work-hours per product to comply with this proposed AD. The average labor rate is $85 per work-hour. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $42,160. PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. ‘‘Subtitle VII: Aviation Programs,’’ describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in ‘‘Subtitle VII, Part A, Subpart III, Section 44701: General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866; 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 proposed 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. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: E:\FR\FM\12MYP1.SGM 12MYP1 Federal Register / Vol. 75, No. 91 / Wednesday, May 12, 2010 / Proposed Rules Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by removing Amendment 39–15889 and adding the following new AD: Turbomeca S.A.: Docket No. FAA–2007– 28077; Directorate Identifier 2007–NE– 20–AD. Comments Due Date (a) We must receive comments by June 28, 2010. Affected Airworthiness Directives (ADs) (b) This AD revises AD 2009–09–03, Amendment 39–15889. Applicability (c) This AD applies to Turbomeca S.A. Arriel 2B and 2B1 turboshaft engines that don’t incorporate modification TU166. These engines are installed on, but not limited to, Eurocopter AS 350 B3 and EC 130 B4 helicopters. Reason (d) This AD results from: Since issuance of AD 2007–0109, ´ Turbomeca has released modification TU166 which consists in inserting HP blade dampers between the HP disc and the HP blade platform. Introduction of these dampers has demonstrated to limit axial displacement of the HP blade relative to the disk in case of blade lock rupture or opening, therefore eliminating the need for inspection and replacement. We are issuing this AD to prevent an uncommanded in-flight engine shutdown which could result in an emergency autorotation landing or an accident. WReier-Aviles on DSKGBLS3C1PROD with PROPOSALS Actions and Compliance (e) Unless already done, do the following actions: Initial Inspection (1) Perform an initial high-pressure (HP) turbine borescope inspection according to Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292 72 2825, Version B, dated September 21, 2009, or earlier version as follows: (i) For engines with fewer than 500 hours and 450 cycles since new or since the last HP turbine borescope inspection, inspect before reaching 600 hours or 500 cycles whichever occurs first. Replace HP turbine modules with rearward turbine blade displacement greater than 0.5 mm. (ii) For the remaining engines, inspect within the next 100 hours. Replace HP turbine modules with rearward turbine blade displacement greater than 0.5 mm. Repetitive Inspections (2) Perform repetitive HP turbine borescope inspections according to Turbomeca S.A. MSB No. 292 72 2825, Version B, dated September 21, 2009 or earlier version: (i) Within 600 hours or 500 cycles from the previous inspection, whichever occurs first, if the rearward displacement of the turbine blades was less than 0.2 mm. Replace HP VerDate Mar<15>2010 13:12 May 11, 2010 Jkt 220001 turbine modules with rearward turbine blade displacement greater than 0.5 mm. (ii) Within 100 hours of the previous inspection if the rearward displacement of the turbine blades was between 0.2 mm and 0.5 mm. Replace HP turbine modules with rearward turbine blade displacement greater than 0.5 mm. Optional Terminating Action (f) Incorporating modification TU166 terminates the repetitive inspection requirements of paragraphs (e)(2)(i) and (e)(2)(ii) of this AD. FAA AD Differences (g) For clarification, we restructured the actions and compliance wording of this AD. (h) We deleted the Turbomeca reporting requirement from the AD. (i) Although EASA Airworthiness Directive 2007–0109R1, dated November 9, 2009, applies to the Arriel 2B1A engine, this AD does not apply to that model because it has no U.S. type certificate. Alternative Methods of Compliance (AMOCs) (j) 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 (k) Refer to EASA Airworthiness Directive 2007–0109R1, dated November 9, 2009, and Turbomeca S.A. MSB No. 292 72 2825, Version B, dated September 21, 2009, or earlier version, for related information. (l) 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. Issued in Burlington, Massachusetts, on May 5, 2010. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2010–11324 Filed 5–11–10; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF VETERANS AFFAIRS 38 CFR Part 17 RIN 2900–AN41 Hospital and Outpatient Care for Veterans Released From Incarceration to Transitional Housing Department of Veterans Affairs. Proposed rule. AGENCY: ACTION: SUMMARY: The Department of Veterans Affairs (VA) proposes to amend its regulations to authorize VA to provide hospital and outpatient care to a veteran in a program that provides transitional PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 26683 housing upon release from incarceration in a prison or jail. The proposed rule would permit VA to work with these veterans while they are in these programs with the goal of continuing to work with them after their release. This would assist in preventing homelessness in this population of veterans. DATES: Comments must be received on or before July 12, 2010. ADDRESSES: Written comments may be submitted through https:// www.Regulations.gov/; by mail or handdelivery to the Director, Regulations Management (02REG), Department of Veterans Affairs, 810 Vermont Avenue, NW., Room 1068, Washington, DC 20420; or by fax to (202) 273–9026. Comments should indicate that they are submitted in response to ‘‘RIN 2900– AN41 Hospital and Outpatient Care for Veterans Released from Incarceration to Transitional Housing.’’ Copies of comments received will be available for public inspection in the Office of Regulation Policy and Management, Room 1063B, between the hours of 8 a.m. and 4:30 p.m., Monday through Friday (except holidays). Please call (202) 461–4902 for an appointment. In addition, during the comment period, comments may be viewed online through the Federal Docket Management System (FDMS) at https:// www.Regulations.gov/. FOR FURTHER INFORMATION CONTACT: James McGuire, Program Manager, Healthcare for Re-entry Veterans, Veterans Health Administration, Department of Veterans Affairs, 810 Vermont Avenue, NW., Washington, DC 20420, (202) 461–1591. (This is not a toll free number.) SUPPLEMENTARY INFORMATION: Section 1710(h) of title 38, United States Code, states that VA is not required ‘‘to furnish care to a veteran to whom another agency of Federal, State, or local government has a duty to provide care in an institution of such government.’’ The implementing regulation for section 1710(h) is 38 CFR 17.38(c)(5). Generally, § 17.38(c)(5) bars VA from providing ‘‘[h]ospital and outpatient care for a veteran who is either a patient or inmate in an institution of another government agency if that agency has a duty to give the care or services.’’ Typically, government agencies have a duty to provide medical care to inmates who have been released from incarceration in a prison or jail to a temporary housing program (such as a community residential re-entry center or halfway house). This duty may exist even though the responsible government agency expects E:\FR\FM\12MYP1.SGM 12MYP1

Agencies

[Federal Register Volume 75, Number 91 (Wednesday, May 12, 2010)]
[Proposed Rules]
[Pages 26681-26683]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-11324]


=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-28077; Directorate Identifier 2007-NE-20-AD]
RIN 2120-AA64


Airworthiness Directives; Turbomeca S.A. Arriel 2B and 2B1 
Turboshaft Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to revise an existing airworthiness directive (AD) 
for the products listed above. This proposed 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: Since issuance of AD 2007-0109, Turbom[eacute]ca has 
released modification TU166 which consists in inserting HP blade 
dampers between the HP disc and the HP blade platform. Introduction of 
these dampers has demonstrated to limit axial displacement of the HP 
blade relative to the disk in case of blade lock rupture or opening, 
therefore eliminating the need for inspection and replacement.
    We are proposing this AD to prevent an uncommanded in-flight engine 
shutdown which could result in an emergency autorotation landing or an 
accident.

DATES: We must receive comments on this proposed AD by June 28, 2010.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to https://www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 1200 New Jersey Avenue, SE., West Building Ground 
Floor, Room W12-140, Washington, DC 20590-0001.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
     Fax: (202) 493-2251.
    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 proposed AD.

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 proposed AD, the regulatory 
evaluation, any comments received, and other information. The street 
address for the Docket Operations office (telephone (800) 647-5527) is 
the same as the Mail address provided in

[[Page 26682]]

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

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:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2007-
28077; Directorate Identifier 2007-NE-20-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on those comments.
    We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact 
with FAA personnel concerning this proposed AD. Using the search 
function of the Web site, anyone can find and read the comments in any 
of our dockets, including, if provided, 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).

Discussion

    On April 16, 2009, the FAA issued AD 2009-09-03, Amendment 39-15889 
(74 FR 18981, April 27, 2009). That AD requires performing an initial 
and repetitive borescope inspection of the engine for rearward 
displacement of the high-pressure turbine (HP) blades.

Actions Since AD 2009-09-03 Was Issued

    Since that AD was issued, the European Aviation Safety Agency 
(EASA), which is the Technical Agent for the Member States of the 
European Community, has issued EASA Airworthiness Directive 2007-
0109R1, dated November 9, 2009 (referred to after this as ``the 
MCAI''), to correct an unsafe condition for the specified products. The 
MCAI states:

    Since issuance of AD 2007-0109, Turbom[eacute]ca has released 
modification TU166 which consists in inserting HP blade dampers 
between the HP disc and the HP blade platform. Introduction of these 
dampers has demonstrated to limit axial displacement of the HP blade 
relative to the disk in case of blade lock rupture or opening, 
therefore eliminating the need for inspection and replacement.
    Therefore, this AD revises AD 2007-0109 by retaining the same 
requirements of AD 2007-0109 except that applicability is limited to 
ARRIEL 2B, 2B1 and 2B1A engines which do not incorporate 
modification TU166.

You may obtain further information by examining the MCAI in the AD 
docket.

Relevant Service Information

    Turbomeca S.A. has issued Mandatory Service Bulletin No. 292 72 
2825, Version B, dated September 21, 2009. The actions described in 
this service information are intended to correct the unsafe condition 
identified in the EASA AD.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of France, 
and is approved for operation in the United States. Pursuant to our 
bilateral agreement with France, they have notified us of the unsafe 
condition described in the EASA AD and service information referenced 
above. We are proposing this AD because we evaluated all information 
provided by EASA, and determined the unsafe condition exists and is 
likely to exist or develop on other products of the same type design. 
This proposed AD would require inspecting for HP blade rearward 
displacement.

Differences Between This AD and the MCAI or Service Information

    We have reviewed the MCAI and related service information and, in 
general, agree with their substance. But we required different actions 
in this AD from those in the MCAI in order to follow FAA policies. Any 
such differences are described in a separate paragraph of the AD. These 
requirements take precedence over the actions copied from the MCAI.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 248 products of U.S. registry. We also estimate that 
it would take about 2 work-hours per product to comply with this 
proposed AD. The average labor rate is $85 per work-hour. Based on 
these figures, we estimate the cost of the proposed AD on U.S. 
operators to be $42,160.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

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

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

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


[[Page 26683]]


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


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  39.13 by removing Amendment 39-15889 and 
adding the following new AD:

Turbomeca S.A.: Docket No. FAA-2007-28077; Directorate Identifier 
2007-NE-20-AD.

Comments Due Date

    (a) We must receive comments by June 28, 2010.

Affected Airworthiness Directives (ADs)

    (b) This AD revises AD 2009-09-03, Amendment 39-15889.

Applicability

    (c) This AD applies to Turbomeca S.A. Arriel 2B and 2B1 
turboshaft engines that don't incorporate modification TU166. These 
engines are installed on, but not limited to, Eurocopter AS 350 B3 
and EC 130 B4 helicopters.

Reason

    (d) This AD results from:

    Since issuance of AD 2007-0109, Turbom[eacute]ca has released 
modification TU166 which consists in inserting HP blade dampers 
between the HP disc and the HP blade platform. Introduction of these 
dampers has demonstrated to limit axial displacement of the HP blade 
relative to the disk in case of blade lock rupture or opening, 
therefore eliminating the need for inspection and replacement.

We are issuing this AD to prevent an uncommanded in-flight engine 
shutdown which could result in an emergency autorotation landing or 
an accident.

Actions and Compliance

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

Initial Inspection

    (1) Perform an initial high-pressure (HP) turbine borescope 
inspection according to Turbomeca S.A. Mandatory Service Bulletin 
(MSB) No. 292 72 2825, Version B, dated September 21, 2009, or 
earlier version as follows:
    (i) For engines with fewer than 500 hours and 450 cycles since 
new or since the last HP turbine borescope inspection, inspect 
before reaching 600 hours or 500 cycles whichever occurs first. 
Replace HP turbine modules with rearward turbine blade displacement 
greater than 0.5 mm.
    (ii) For the remaining engines, inspect within the next 100 
hours. Replace HP turbine modules with rearward turbine blade 
displacement greater than 0.5 mm.

Repetitive Inspections

    (2) Perform repetitive HP turbine borescope inspections 
according to Turbomeca S.A. MSB No. 292 72 2825, Version B, dated 
September 21, 2009 or earlier version:
    (i) Within 600 hours or 500 cycles from the previous inspection, 
whichever occurs first, if the rearward displacement of the turbine 
blades was less than 0.2 mm. Replace HP turbine modules with 
rearward turbine blade displacement greater than 0.5 mm.
    (ii) Within 100 hours of the previous inspection if the rearward 
displacement of the turbine blades was between 0.2 mm and 0.5 mm. 
Replace HP turbine modules with rearward turbine blade displacement 
greater than 0.5 mm.

Optional Terminating Action

    (f) Incorporating modification TU166 terminates the repetitive 
inspection requirements of paragraphs (e)(2)(i) and (e)(2)(ii) of 
this AD.

FAA AD Differences

    (g) For clarification, we restructured the actions and 
compliance wording of this AD.
    (h) We deleted the Turbomeca reporting requirement from the AD.
    (i) Although EASA Airworthiness Directive 2007-0109R1, dated 
November 9, 2009, applies to the Arriel 2B1A engine, this AD does 
not apply to that model because it has no U.S. type certificate.

Alternative Methods of Compliance (AMOCs)

    (j) 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

    (k) Refer to EASA Airworthiness Directive 2007-0109R1, dated 
November 9, 2009, and Turbomeca S.A. MSB No. 292 72 2825, Version B, 
dated September 21, 2009, or earlier version, for related 
information.
    (l) 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.

    Issued in Burlington, Massachusetts, on May 5, 2010.
Peter A. White,
Assistant Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.

[FR Doc. 2010-11324 Filed 5-11-10; 8:45 am]
BILLING CODE 4910-13-P
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