Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines, 74123-74125 [2012-30065]

Download as PDF Federal Register / Vol. 77, No. 240 / Thursday, December 13, 2012 / Proposed Rules within a Corporate LLP that would qualify as part of the ‘‘executive and administrative personnel,’’ should the Commission issue general rules stating that persons holding positions with certain characteristics are part of the Corporate LLP’s restricted class? The Commission seeks comment on these and other possible approaches to address, if at all, the treatment of Corporate LLPs for purposes of the Act, as well as any other aspect of this rulemaking. Certification of No Effect Pursuant to 5 U.S.C. 605(b) (Regulatory Flexibility Act) The Commission certifies that the attached proposed rules, if adopted, would not have a significant economic impact on a substantial number of small entities. The basis for this certification is that the proposed rules modify how limited liability partnerships may operate pursuant to Federal campaign finance laws. The only economic impact attributable to these proposed rules would be the costs incurred by limited liability partnerships that wish to establish and administer separate segregated funds. This activity is entirely voluntary and any costs associated with it would fall only on entities choosing to establish and administer a separate segregated fund. Therefore, the attached proposed rule would not have a significant impact on a substantial number of small entities. List of Subjects in 11 CFR Part 110 Campaign funds, Political candidates, Political committees and parties. For the reasons set out in the preamble, Subchapter A, Chapter 1 of Title 11 of the Code of Federal Regulations is proposed to be amended as follows: PART 110—CONTRIBUTION AND EXPENDITURE LIMITATIONS AND PROHIBITIONS (1) In direct proportion to his or her share of the partnership profits, according to instructions that the partnership shall provide to the political committee or candidate; or (2) By agreement of the partners, as long as— (i) Only the profits of the partners to whom the contribution is attributed are reduced (or losses increased), and (ii) These partners’ profits are reduced (or losses increased) in proportion to the contribution attributed to each of them. (b) A contribution by a partnership made in accordance with paragraph (a) of this section shall not exceed the limitations on contributions in 11 CFR 110.1(b), (c), and (d). No portion of any such contribution may be made from the profits of a corporation that is a partner. (c) Contributions by limited liability partnerships (‘‘LLP’’)— (1) A limited liability partnership is a business entity that is recognized as a limited liability partnership under the laws of the State in which it is established. (2) An LLP that elects to be treated as a corporation by the Internal Revenue Service shall be considered a corporation for purposes of 11 CFR parts 100, 113, 114 115, 116, and 9034, except that its restricted class shall consist solely of those persons who receive stock in the association pursuant to Internal Revenue Service rules, as well as their families. On behalf of the Commission. Caroline C. Hunter, Chair, Federal Election Commission. [FR Doc. 2012–30029 Filed 12–12–12; 8:45 am] BILLING CODE 6715–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2012–1167; Directorate Identifier 2012–NE–36–AD] 1. The authority citation for part 110 would continue to read as follows: RIN 2120–AA64 Authority: 2 U.S.C. 431(8), 431(9), 432(c)(2), 437d, 438(a)(8), 441a, 441b, 441d, 441e, 441f, 441g, 441h and 36 U.S.C. 510. Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines § 110.1 AGENCY: [Amended] wreier-aviles on DSK5TPTVN1PROD with 2. In § 110.1, paragraph (e) is removed and reserved. 3. Add § 110.21 to read as follows: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). § 110.21 SUMMARY: Partnerships. (a) All partnerships, except LLPs governed by paragraph (c) of this section, shall attribute a contribution by the partnership to both the partnership and each individual partner— VerDate Mar<15>2010 14:58 Dec 12, 2012 Jkt 229001 We propose to adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) models Tay 620–15 and Tay 650– 15 turbofan engines. This proposed AD was prompted by RRD recalculating the PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 74123 Declared Safe Cyclic Life (DSCL) for certain low-pressure compressor (LPC) rotor disc assemblies operating to the Plan D Flight Mission. This proposed AD would require removing the affected LPC rotor disc assemblies at a new lower recalculated DSCL. We are proposing this AD to prevent failure of the LPC rotor disc assembly, uncontained engine failure, and damage to the airplane. DATES: We must receive comments on this proposed AD by February 11, 2013. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, 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: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. • 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. For service information identified in this proposed AD, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11–15827 Dahlewitz, BlankenfeldeMahlow, Germany; phone: +49 0 33– 7086–1944; fax: +49 0 33–7086–3276. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7125. 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 (phone: 800 647–5527) is the same as the Mail address provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Frederick Zink, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7779; fax: 781–238– 7199; email: Frederick.zink@faa.gov. SUPPLEMENTARY INFORMATION: E:\FR\FM\13DEP1.SGM 13DEP1 74124 Federal Register / Vol. 77, No. 240 / Thursday, December 13, 2012 / Proposed Rules 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–2012–1167; Directorate Identifier 2012–NE–36–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 The European Aviation Safety Agency (EASA), which is the aviation authority for the Member States of the European Community, has issued EASA AD 2012– 0204, dated October 1, 2012 (referred to hereinafter as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: wreier-aviles on DSK5TPTVN1PROD with The Tay 650–15 and Tay 650–15/10 engine Time Limits Manual Chapter 05–10–01 contains maximum approved life limitations, identified as Declared Safe Cyclic Life (DSCL) for Low Pressure Compressor (LPC) rotor disc assemblies Part Number (P/N) JR31198A and P/N JR34563A operated to the Plan D Flight Mission, which has been recalculated to a lower value. Decreased DSCL of LPC rotor disc assemblies P/N JR31198A and P/N JR34563A may affect these disc assemblies installed in Tay 650–15 and Tay 650–15/10 engines as well as in Tay 620–15 and Tay 620–15/20 engines. Failure to take decreased DSCL of affected LPC rotor disc assemblies into account could lead to affected part failure and consequent release of high energy debris potentially resulting in damage to, and/or reduced control of, the aeroplane. You may obtain further information by examining the MCAI in the AD docket. Relevant Service Information RRD has issued Alert Service Bulletin TAY–72–A1772 dated August 9, 2012. VerDate Mar<15>2010 14:58 Dec 12, 2012 Jkt 229001 The actions described in this service information are intended to correct the unsafe condition identified in the MCAI. FAA’s Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of Germany, and is approved for operation in the United States. Pursuant to our bilateral agreement with the European Community, EASA has notified us of the unsafe condition described in the MCAI 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 requires removing the affected LPC rotor disc assemblies at the new lower recalculated DSCL. Costs of Compliance We estimate that this proposed AD will affect 4 engines installed on airplanes of U.S. registry. We also estimate that it would require 4 hours to perform the actions required by this AD. The average labor rate is $85 per hour. Prorated life for the disc assembly is approximately $650 per disc. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $3,960. 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 PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 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: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: Rolls-Royce Deutschland Ltd & Co KG (RRD) (formerly Rolls-Royce plc): Docket No. FAA–2012–1167; Directorate Identifier 2012–NE–36–AD. (a) Comments Due Date We must receive comments by February 11, 2013. (b) Affected Airworthiness Directives (ADs) None. (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) models Tay 620–15 and Tay 650–15 turbofan engines with a low-pressure compressor (LPC) rotor disc assembly, part number (P/N) JR31198A or P/N JR34563A installed. (d) Reason This AD was prompted by RRD recalculating the Declared Safe Cyclic Life for certain LPC rotor disc assemblies operating to the Plan D Flight Mission. We are issuing this AD to prevent failure of the LPC rotor disc assembly, uncontained engine failure, and loss of the airplane. E:\FR\FM\13DEP1.SGM 13DEP1 Federal Register / Vol. 77, No. 240 / Thursday, December 13, 2012 / Proposed Rules (e) Actions and Compliance Unless already done, do the following. For engines that have operated to the Plan D Flight Mission configuration, remove the LPC rotor disc assembly from service before accumulating 18,700 engine flight cycles. Do not return to service nor approve for return to service any engine with the affected discs installed that exceeds 18,700 engine flight cycles. (f) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (g) Related Information (1) For more information about this AD, contact Frederick Zink, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; email: Frederick.zink@faa.gov; phone: 781– 238–7779; fax: 781–238–7199. (2) Refer to European Aviation Safety Agency AD 2012–0204, dated October 1, 2012, and RRD Alert Service Bulletin TAY– 72–A1772, dated August 9, 2012, for related information. (3) For service information identified in this AD, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11 Dahlewitz 15827, Blankenfelde-Mahlow, Germany; phone: +49 0 33–7086–1944; fax: +49 0 33–7086–3276. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. Issued in Burlington, Massachusetts, on December 6, 2012. Robert J. Ganley, Acting Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2012–30065 Filed 12–12–12; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2012–1288; Directorate Identifier 2012–NE–37–AD] RIN 2120–AA64 Airworthiness Directives; General Electric Company Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). wreier-aviles on DSK5TPTVN1PROD with AGENCY: We propose to adopt a new airworthiness directive (AD) for all General Electric Company (GE) CF34– 8C and CF34–8E turbofan engines with certain part numbers (P/N) of SUMMARY: VerDate Mar<15>2010 14:58 Dec 12, 2012 Jkt 229001 74125 operability bleed valves (OBV) installed. This proposed AD was prompted by three failure events of ring lock fuel fittings on the OBV. Two of those events led to an engine fire. This proposed AD would require the affected OBVs be removed from service and replaced with OBVs eligible for installation. We are proposing this AD to prevent failure of OBV ring lock fuel fittings, engine fuel leakage, uncontrolled fire, and damage to the airplane. DATES: We must receive comments on this proposed AD by February 11, 2013. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact General Electric, One Neumann Way, MD Y–75, Cincinnati, OH; phone: 513–552–2913; email: geae.aoc@ge.com; and Web site: www.GE.com. You view the referenced service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. this proposal. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA– 2012–1288; Directorate Identifier 2012– NE–37–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 because of 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 we receive about 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 Management Facility 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 Office (phone: 800–647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: John Frost, Aerospace Engineer, Engine & Propeller Directorate, FAA, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7756; fax: 781– 238–7199; email: john.frost@faa.gov. SUPPLEMENTARY INFORMATION: We reviewed GE Service Bulletin (SB) No. CF34–8C–AL S/B 75–0017, dated September 14 2012. We also reviewed GE SB No. CF34–8E–AL S/B 75–0012, dated September 14, 2012. These bulletins describe procedures for removing from service OBVs having an affected P/N. Comments Invited We invite you to send any written relevant data, views, or arguments about PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 Discussion We received reports of three failure events of OBV ring lock fuel fittings on GE CF34–8C turbofan engines. Two of those events led to an engine fire. Investigation revealed that the ring lock fittings failed due to fatigue caused by improper broaching of the OBV housing during manufacture, and, improper installation of the ring lock fittings during OBV assembly. GE CF34–8E turbofan engines also use the affected OBVs and would be affected by this proposed AD. This condition, if not corrected, could result in failure of OBV ring lock fuel fittings, engine fuel leakage, uncontrolled fire, and damage to the airplane. Relevant Service Information FAA’s Determination We are proposing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Proposed AD Requirements This proposed AD would require for all GE CF34–8C and CF34–8E turbofan engines with an OBV P/N 4121T67P02, P/N 4121T67P03, P/N 4121T67P04, parts manufacturer approval (PMA) P/N 392155–2, PMA P/N 392155–3, or PMA P/N 392155–4 installed, removal of the OBV from service. E:\FR\FM\13DEP1.SGM 13DEP1

Agencies

[Federal Register Volume 77, Number 240 (Thursday, December 13, 2012)]
[Proposed Rules]
[Pages 74123-74125]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-30065]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-1167; Directorate Identifier 2012-NE-36-AD]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG 
Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Rolls-Royce Deutschland Ltd & Co KG (RRD) models Tay 620-15 and 
Tay 650-15 turbofan engines. This proposed AD was prompted by RRD 
recalculating the Declared Safe Cyclic Life (DSCL) for certain low-
pressure compressor (LPC) rotor disc assemblies operating to the Plan D 
Flight Mission. This proposed AD would require removing the affected 
LPC rotor disc assemblies at a new lower recalculated DSCL. We are 
proposing this AD to prevent failure of the LPC rotor disc assembly, 
uncontained engine failure, and damage to the airplane.

DATES: We must receive comments on this proposed AD by February 11, 
2013.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, 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: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     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.
    For service information identified in this proposed AD, contact 
Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11-15827 Dahlewitz, 
Blankenfelde-Mahlow, Germany; phone: +49 0 33-7086-1944; fax: +49 0 33-
7086-3276. You may view this service information at the FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803. For information on the availability of this material at the FAA, 
call 781-238-7125.

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 (phone: 800 647-5527) is the 
same as the Mail address provided in the ADDRESSES section. Comments 
will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Frederick Zink, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 12 
New England Executive Park, Burlington, MA 01803; phone: 781-238-7779; 
fax: 781-238-7199; email: Frederick.zink@faa.gov.

SUPPLEMENTARY INFORMATION:

[[Page 74124]]

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-2012-1167; 
Directorate Identifier 2012-NE-36-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

    The European Aviation Safety Agency (EASA), which is the aviation 
authority for the Member States of the European Community, has issued 
EASA AD 2012-0204, dated October 1, 2012 (referred to hereinafter as 
``the MCAI''), to correct an unsafe condition for the specified 
products. The MCAI states:

    The Tay 650-15 and Tay 650-15/10 engine Time Limits Manual 
Chapter 05-10-01 contains maximum approved life limitations, 
identified as Declared Safe Cyclic Life (DSCL) for Low Pressure 
Compressor (LPC) rotor disc assemblies Part Number (P/N) JR31198A 
and P/N JR34563A operated to the Plan D Flight Mission, which has 
been recalculated to a lower value.
    Decreased DSCL of LPC rotor disc assemblies P/N JR31198A and P/N 
JR34563A may affect these disc assemblies installed in Tay 650-15 
and Tay 650-15/10 engines as well as in Tay 620-15 and Tay 620-15/20 
engines.
    Failure to take decreased DSCL of affected LPC rotor disc 
assemblies into account could lead to affected part failure and 
consequent release of high energy debris potentially resulting in 
damage to, and/or reduced control of, the aeroplane.

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

Relevant Service Information

    RRD has issued Alert Service Bulletin TAY-72-A1772 dated August 9, 
2012. The actions described in this service information are intended to 
correct the unsafe condition identified in the MCAI.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of 
Germany, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with the European Community, EASA has 
notified us of the unsafe condition described in the MCAI 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 requires removing the affected 
LPC rotor disc assemblies at the new lower recalculated DSCL.

Costs of Compliance

    We estimate that this proposed AD will affect 4 engines installed 
on airplanes of U.S. registry. We also estimate that it would require 4 
hours to perform the actions required by this AD. The average labor 
rate is $85 per hour. Prorated life for the disc assembly is 
approximately $650 per disc. Based on these figures, we estimate the 
cost of the proposed AD on U.S. operators to be $3,960.

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:

    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 AD:

Rolls-Royce Deutschland Ltd & Co KG (RRD) (formerly Rolls-Royce 
plc): Docket No. FAA-2012-1167; Directorate Identifier 2012-NE-36-
AD.

(a) Comments Due Date

    We must receive comments by February 11, 2013.

(b) Affected Airworthiness Directives (ADs)

    None.

(c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) 
models Tay 620-15 and Tay 650-15 turbofan engines with a low-
pressure compressor (LPC) rotor disc assembly, part number (P/N) 
JR31198A or P/N JR34563A installed.

(d) Reason

    This AD was prompted by RRD recalculating the Declared Safe 
Cyclic Life for certain LPC rotor disc assemblies operating to the 
Plan D Flight Mission. We are issuing this AD to prevent failure of 
the LPC rotor disc assembly, uncontained engine failure, and loss of 
the airplane.

[[Page 74125]]

(e) Actions and Compliance

    Unless already done, do the following. For engines that have 
operated to the Plan D Flight Mission configuration, remove the LPC 
rotor disc assembly from service before accumulating 18,700 engine 
flight cycles. Do not return to service nor approve for return to 
service any engine with the affected discs installed that exceeds 
18,700 engine flight cycles.

(f) Alternative Methods of Compliance (AMOCs)

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

(g) Related Information

    (1) For more information about this AD, contact Frederick Zink, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803; email: Frederick.zink@faa.gov; phone: 781-238-7779; fax: 781-
238-7199.
    (2) Refer to European Aviation Safety Agency AD 2012-0204, dated 
October 1, 2012, and RRD Alert Service Bulletin TAY-72-A1772, dated 
August 9, 2012, for related information.
    (3) For service information identified in this AD, contact 
Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11 Dahlewitz 15827, 
Blankenfelde-Mahlow, Germany; phone: +49 0 33-7086-1944; fax: +49 0 
33-7086-3276.
    (4) You may view this service information at the FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, 
MA. For information on the availability of this material at the FAA, 
call 781-238-7125.

    Issued in Burlington, Massachusetts, on December 6, 2012.
Robert J. Ganley,
Acting Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-30065 Filed 12-12-12; 8:45 am]
BILLING CODE 4910-13-P

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