Airworthiness Directives; Rolls-Royce plc Turbofan Engines, 26216-26218 [2012-10693]

Download as PDF 26216 Federal Register / Vol. 77, No. 86 / Thursday, May 3, 2012 / Proposed Rules The NRC application fee for an access authorization of type . . . Is the sum of the current OPM investigation billing rate charged for an investigation of type . . . Renewal of ‘‘L’’ access authorization 1 ........................... NACLC—Access National Agency Check with Law and Credit (Standard Service, Code C). SSBI—Single Scope Background Investigation (Standard Service, Code C). SSBI—Single Scope Background Investigation (Priority Handling, Code A). No fee assessed for most applications .......................... SSBI–PR—Periodic Reinvestigation for SSBI (Standard Service, Code C). Initial ‘‘Q’’ access authorization ...................................... Initial ‘‘Q’’ access authorization (expedited processing) Reinstatement of ‘‘Q’’ access authorization 2 ................. Renewal of ‘‘Q’’ access authorization 1 .......................... Plus the NRC’s processing fee (rounded to the nearest dollar), which is equal to the OPM investigation billing rate for the type of investigation referenced multiplied by . . . 55.8% 55.8% 55.8% ................................................ 55.8% 1 If the NRC determines, based on its review of available data, that a single scope investigation is necessary, the appropriate fee for an Initial ‘‘Q’’ access authorization will be assessed before the conduct of investigation. 2 Full fee will only be charged if an investigation is required. Dated at Rockville, Maryland, this 19th day of April 2012. For the Nuclear Regulatory Commission. R.W. Borchardt, Executive Director for Operations. [FR Doc. 2012–10710 Filed 5–2–12; 8:45 am] BILLING CODE 7590–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2010–0821; Directorate Identifier 2010–NE–30–AD] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce plc Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to supersede an existing airworthiness directive (AD) that applies to all Rolls-Royce plc (RR) RB211–Trent 875–17, RB211–Trent 877–17, RB211–Trent 884–17, RB211– Trent 884B–17, RB211–Trent 892–17, RB211–Trent 892B–17, and RB211– Trent 895–17 turbofan engines. The existing AD currently requires initial and repetitive ultrasonic inspections (UIs) of certain low-pressure (LP) compressor blades identified by serial number (S/N). This proposed AD would require the same actions but expands the population of blades. We are proposing this AD to prevent LP compressor blades from failing due to blade root cracks, which could lead to uncontained engine failure and damage to the airplane. DATES: We must receive comments on this proposed AD by July 2, 2012. wreier-aviles on DSK7SPTVN1PROD with PROPOSALS SUMMARY: VerDate Mar<15>2010 15:19 May 02, 2012 Jkt 226001 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 AD, contact Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, England, DE248BJ, telephone: 011–44–1332–242424; fax: 011–44– 1332–245418, or email: https:// www.rolls-royce.com/contact/ civil_team.jsp. You may review copies of 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. ADDRESSES: 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: Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine & PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7143; fax: 781–238– 7199; email: alan.strom@faa.gov. 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–2010–0821; Directorate Identifier 2010–NE–30–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. Discussion On March 20, 2012, we issued AD 2012–06–23, Amendment 39–17004 (77 FR 20508, April 5, 2012), for all RR RB211–Trent 875–17, RB211–Trent 877–17, RB211–Trent 884–17, RB211– Trent 884B–17, RB211–Trent 892–17, RB211–Trent 892B–17, and RB211– Trent 895–17 turbofan engines. That AD requires initial and repetitive UIs of certain LP compressor blades identified by S/N. That AD superseded AD 2011– 08–07, Amendment 39–16657 (76 FR 24798, May 3, 2011) and resulted from RR concluding that additional blades affected must be inspected. We issued that AD to prevent LP compressor blades from failing due to blade root cracks, which could lead to uncontained E:\FR\FM\03MYP1.SGM 03MYP1 Federal Register / Vol. 77, No. 86 / Thursday, May 3, 2012 / Proposed Rules engine failure and damage to the airplane. Authority for This Rulemaking Relevant Service Information We reviewed Rolls-Royce plc ASB No. RB.211–72–AG244, Revision 4, dated December 22, 2011. The service information describes procedures for performing UIs of the LP compressor blades listed in Appendices 3A through 3L of that ASB. 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 retain all of the requirements of AD 2012–06–23 (77 FR 20508, April 5, 2012). This proposed AD would require adding inspections of the blades listed in Appendices 3H through 3L of ASB No. RB.211–72– AG244, Revision 4, dated December 22, 2011. This proposed AD would also require accomplishing the actions specified in the service information described previously. wreier-aviles on DSK7SPTVN1PROD with PROPOSALS The Proposed Amendment $323,740. Our cost estimate is exclusive of possible warranty coverage. Actions Since Existing AD Was Issued We issued AD 2012–06–23, Amendment 39–17004 (77 FR 20508, April 5, 2012), to ensure timely inspection of the listed blades in Appendices 3A through 3G of RollsRoyce plc Alert Service Bulletin (ASB) No. RB.211–72–AG244, Revision 4, dated December 22, 2011. We now need AD action to add the inspection of the blades listed in Appendices 3H through 3L of that ASB. Costs of Compliance Based on the service information, we estimate that this proposed AD would affect about 158 engines installed on airplanes of U.S. registry. We also estimate that it would take about 3 hours per engine inspection, and six inspections per year. The average labor rate is $85 per work-hour. We estimate that one LP compressor blade per year would need replacement, at a cost of about $82,000. Based on these figures, we estimate the annual cost of the proposed AD on U.S. operators to be Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: 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. 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 removing airworthiness directive (AD) 2012–06–23, Amendment 39–17004 (77 FR 20508, April 5, 2012), and adding the following new AD: Rolls-Royce plc: Docket No. FAA–2010– 0821; Directorate Identifier 2010–NE– 30–AD. (a) Comments Due Date The FAA must receive comments on this AD action by July 2, 2012. (b) Affected ADs This AD supersedes AD 2012–06–23, Amendment 39–17004 (77 FR 20508, April 5, 2012). Regulatory Findings We have 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 that the 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), (3) Will not affect intrastate aviation in Alaska, and (4) 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. (c) Applicability This AD applies to Rolls-Royce plc (RR) RB211–Trent 875–17, RB211–Trent 877–17, RB211–Trent 884–17, RB211–Trent 884B–17, RB211–Trent 892–17, RB211–Trent 892B–17, and RB211–Trent 895–17 turbofan engines. (d) Unsafe Condition This AD was prompted by the need to add the inspections of the low-pressure (LP) compressor blades listed by serial number (S/ N) in Appendices 3H through 3L of RollsRoyce plc Alert Service Bulletin (ASB) No. RB.211–72–AG244, Revision 4, dated December 22, 2011. We are issuing this AD to prevent LP compressor blades from failing due to blade root cracks, which could lead to uncontained engine failure and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) Perform an initial ultrasonic inspection (UI) of the affected LP compressor blades identified by S/N in Appendices 3A through 3L of RR ASB No. RB.211–72–AG244, Revision 4, dated December 22, 2011. Use Table 1 of this AD to determine your initial inspection threshold. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. TABLE 1—INITIAL INSPECTION THRESHOLDS Appendix number of RR ASB No. RB.211–72–AG244, revision 4, that identifies affected LP compressor blades by S/N Initial inspection threshold 3A and 3B ...................................................................................................... 3C .................................................................................................................. 3D .................................................................................................................. 3E .................................................................................................................. VerDate Mar<15>2010 15:19 May 02, 2012 Jkt 226001 PO 00000 Frm 00005 Fmt 4702 Within Within Within Within Sfmt 4702 70 10 22 34 26217 flight cycles after the effective date of this AD. months after the effective date of this AD. months after the effective date of this AD. months after the effective date of this AD. E:\FR\FM\03MYP1.SGM 03MYP1 26218 Federal Register / Vol. 77, No. 86 / Thursday, May 3, 2012 / Proposed Rules TABLE 1—INITIAL INSPECTION THRESHOLDS—Continued Appendix number of RR ASB No. RB.211–72–AG244, revision 4, that identifies affected LP compressor blades by S/N Initial inspection threshold 3F ................................................................................................................... 3G .................................................................................................................. 3H .................................................................................................................. 3I .................................................................................................................... 3J ................................................................................................................... 3K .................................................................................................................. 3L ................................................................................................................... (2) Thereafter, perform repetitive UIs of the affected LP compressor blades within every 100 flight cycles. (3) Use paragraph 3.A.(2) of Accomplishment Instructions of RR ASB No. RB.211–72–AG244, Revision 4, dated December 22, 2011, and paragraphs 1. through 3.B. of Appendix 1 of that ASB, or paragraphs 3.B.(1) through 3.B.(3) of Accomplishment Instructions of RR ASB No. RB.211–72–AG244, Revision 4, dated December 22, 2011, and paragraphs 1. through 3.C. of Appendix 2 of that ASB, to perform the UIs. (4) Do not return to service any engine with blades that failed the inspection required by this AD. (5) For blades that are removed from the engine and pass inspection, re-apply dry film lubricant before re-installing the blades. (6) After the effective date of this AD, do not install any affected LP compressor blade that has reached the initial inspection threshold in Table 1, unless it has passed the initial and repetitive UIs required by this AD. (f) Credit for Actions Accomplished in Accordance With Previous Service Information You may take credit for the initial inspection that is required by paragraph (e)(1) of this AD if you performed the initial inspection before the effective date of this AD using RR ASB No. RB.211–72–AG244, dated August 7, 2009; ASB No. RB.211–72–AG244, Revision 1, dated January 26, 2010; ASB No. RB.211–72–AG244, Revision 2, dated August 18, 2011; or ASB No. RB.211–72–AG244, Revision 3, dated December 13, 2011. wreier-aviles on DSK7SPTVN1PROD with PROPOSALS (g) Alternative Methods of Compliance 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. (h) Related Information (1) For more information about this AD, contact Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7143; fax: 781–238–7199; email: alan.strom@faa.gov. (2) Refer to European Aviation Safety Agency AD 2012–0025, dated February 8, 2012, for related information. (3) For service information identified in this AD, contact Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, England, DE248BJ, telephone: 011–44–1332– 242424; fax: 011–44–1332–245418, or email: VerDate Mar<15>2010 15:19 May 02, 2012 Jkt 226001 Within Within Within Within Within Within Within 46 months after the effective date of this AD. 58 months after the effective date of this AD. 70 months after the effective date of this AD. 82 months after the effective date of this AD. 94 months after the effective date of this AD. 106 months after the effective date of this AD. 118 months after the effective date of this AD. https://www.rolls-royce.com/contact/ civil_team.jsp. You may review copies of 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. Issued in Burlington, Massachusetts, on April 27, 2012. Colleen M. D’Alessandro, Assistant Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2012–10693 Filed 5–2–12; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT 24 CFR Parts 5, 200, 207, and 232 [Docket No. FR–5465 P–01] RIN–2502–AJ05 Federal Housing Administration (FHA): Section 232 Healthcare Facility Insurance Program-Strengthening Accountability and Regulatory Revisions Update Office of the Assistant Secretary for Housing—Federal Housing Commissioner, HUD. ACTION: Proposed rule. AGENCY: In 2010 through 2011, HUD commenced and completed the process of revising regulations applicable to, and closing documents used in, FHA insurance of multifamily rental projects, to reflect current policy and practices in the multifamily mortgage market. The multifamily rental project regulations and closing documents had not been updated in more than 20 years. Through this proposed rule, HUD commences a similar process for its regulations governing insurance of healthcare facilities under section 232 of the National Housing Act, and the closing documents used in such transactions. HUD’s Section 232 program insures mortgage loans to facilitate the construction, substantial rehabilitation, purchase, and refinancing of nursing homes, intermediate care facilities, SUMMARY: PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 board and care homes, and assistedliving facilities. This rule proposes amendments to update HUD’s Section 232 regulations, to reflect current policy and practices, and to improve accountability and strengthen risk management. DATES: Comment Due Date: July 2, 2012. Interested persons are invited to submit comments regarding this proposed rule to the Regulations Division, Office of General Counsel, Department of Housing and Urban Development, 451 7th Street SW., Room 10276, Washington, DC 20410–0500. Communications must refer to the above docket number and title. There are two methods for submitting public comments. All submissions must refer to the above docket number and title. 1. Submission of Comments by Mail. Comments may be submitted by mail to the Regulations Division, Office of General Counsel, Department of Housing and Urban Development, 451 7th Street SW., Room 10276, Washington, DC 20410–0500. 2. Electronic Submission of Comments. Interested persons may submit comments electronically through the Federal eRulemaking Portal at www.regulations.gov. HUD strongly encourages commenters to submit comments electronically. Electronic submission of comments allows the commenter maximum time to prepare and submit a comment, ensures timely receipt by HUD, and enables HUD to make them immediately available to the public. Comments submitted electronically through the www.regulations.gov Web site can be viewed by other commenters and interested members of the public. Commenters should follow the instructions provided on that site to submit comments electronically. ADDRESSES: Note: To receive consideration as public comments, comments must be submitted through one of the two methods specified above. Again, all submissions must refer to the docket number and title of the rule. No Facsimile Comments. Facsimile (FAX) comments are not acceptable. E:\FR\FM\03MYP1.SGM 03MYP1

Agencies

[Federal Register Volume 77, Number 86 (Thursday, May 3, 2012)]
[Proposed Rules]
[Pages 26216-26218]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-10693]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-0821; Directorate Identifier 2010-NE-30-AD]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce plc Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to supersede an existing airworthiness directive 
(AD) that applies to all Rolls-Royce plc (RR) RB211-Trent 875-17, 
RB211-Trent 877-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-
Trent 892-17, RB211-Trent 892B-17, and RB211-Trent 895-17 turbofan 
engines. The existing AD currently requires initial and repetitive 
ultrasonic inspections (UIs) of certain low-pressure (LP) compressor 
blades identified by serial number (S/N). This proposed AD would 
require the same actions but expands the population of blades. We are 
proposing this AD to prevent LP compressor blades from failing due to 
blade root cracks, which could lead to uncontained engine failure and 
damage to the airplane.

DATES: We must receive comments on this proposed AD by July 2, 2012.

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 AD, contact Rolls-Royce 
plc, Corporate Communications, P.O. Box 31, Derby, England, DE248BJ, 
telephone: 011-44-1332-242424; fax: 011-44-1332-245418, or email: 
https://www.rolls-royce.com/contact/civil_team.jsp. You may review 
copies of 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.

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: Alan Strom, Aerospace Engineer, Engine 
Certification Office, FAA, Engine & Propeller Directorate, 12 New 
England Executive Park, Burlington, MA 01803; phone: 781-238-7143; fax: 
781-238-7199; email: alan.strom@faa.gov.

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-2010-0821; 
Directorate Identifier 2010-NE-30-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.

Discussion

    On March 20, 2012, we issued AD 2012-06-23, Amendment 39-17004 (77 
FR 20508, April 5, 2012), for all RR RB211-Trent 875-17, RB211-Trent 
877-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-Trent 892-17, 
RB211-Trent 892B-17, and RB211-Trent 895-17 turbofan engines. That AD 
requires initial and repetitive UIs of certain LP compressor blades 
identified by S/N. That AD superseded AD 2011-08-07, Amendment 39-16657 
(76 FR 24798, May 3, 2011) and resulted from RR concluding that 
additional blades affected must be inspected. We issued that AD to 
prevent LP compressor blades from failing due to blade root cracks, 
which could lead to uncontained

[[Page 26217]]

engine failure and damage to the airplane.

Actions Since Existing AD Was Issued

    We issued AD 2012-06-23, Amendment 39-17004 (77 FR 20508, April 5, 
2012), to ensure timely inspection of the listed blades in Appendices 
3A through 3G of Rolls-Royce plc Alert Service Bulletin (ASB) No. 
RB.211-72-AG244, Revision 4, dated December 22, 2011. We now need AD 
action to add the inspection of the blades listed in Appendices 3H 
through 3L of that ASB.

Relevant Service Information

    We reviewed Rolls-Royce plc ASB No. RB.211-72-AG244, Revision 4, 
dated December 22, 2011. The service information describes procedures 
for performing UIs of the LP compressor blades listed in Appendices 3A 
through 3L of that ASB.

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 retain all of the requirements of AD 2012-
06-23 (77 FR 20508, April 5, 2012). This proposed AD would require 
adding inspections of the blades listed in Appendices 3H through 3L of 
ASB No. RB.211-72-AG244, Revision 4, dated December 22, 2011. This 
proposed AD would also require accomplishing the actions specified in 
the service information described previously.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 158 engines installed on airplanes of U.S. registry. 
We also estimate that it would take about 3 hours per engine 
inspection, and six inspections per year. The average labor rate is $85 
per work-hour. We estimate that one LP compressor blade per year would 
need replacement, at a cost of about $82,000. Based on these figures, 
we estimate the annual cost of the proposed AD on U.S. operators to be 
$323,740. Our cost estimate is exclusive of possible warranty coverage.

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 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 that the 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),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) 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.

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 removing airworthiness directive 
(AD) 2012-06-23, Amendment 39-17004 (77 FR 20508, April 5, 2012), and 
adding the following new AD:

Rolls-Royce plc: Docket No. FAA-2010-0821; Directorate Identifier 
2010-NE-30-AD.

(a) Comments Due Date

    The FAA must receive comments on this AD action by July 2, 2012.

(b) Affected ADs

    This AD supersedes AD 2012-06-23, Amendment 39-17004 (77 FR 
20508, April 5, 2012).

(c) Applicability

    This AD applies to Rolls-Royce plc (RR) RB211-Trent 875-17, 
RB211-Trent 877-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-
Trent 892-17, RB211-Trent 892B-17, and RB211-Trent 895-17 turbofan 
engines.

(d) Unsafe Condition

    This AD was prompted by the need to add the inspections of the 
low-pressure (LP) compressor blades listed by serial number (S/N) in 
Appendices 3H through 3L of Rolls-Royce plc Alert Service Bulletin 
(ASB) No. RB.211-72-AG244, Revision 4, dated December 22, 2011. We 
are issuing this AD to prevent LP compressor blades from failing due 
to blade root cracks, which could lead to uncontained engine failure 
and damage to the airplane.

(e) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) Perform an initial ultrasonic inspection (UI) of the 
affected LP compressor blades identified by S/N in Appendices 3A 
through 3L of RR ASB No. RB.211-72-AG244, Revision 4, dated December 
22, 2011. Use Table 1 of this AD to determine your initial 
inspection threshold.

                                     Table 1--Initial Inspection Thresholds
----------------------------------------------------------------------------------------------------------------
Appendix number of RR ASB No.
 RB.211-72-AG244, revision 4,
 that identifies affected LP                              Initial inspection threshold
   compressor blades by S/N
----------------------------------------------------------------------------------------------------------------
3A and 3B....................  Within 70 flight cycles after the effective date of this AD.
3C...........................  Within 10 months after the effective date of this AD.
3D...........................  Within 22 months after the effective date of this AD.
3E...........................  Within 34 months after the effective date of this AD.

[[Page 26218]]

 
3F...........................  Within 46 months after the effective date of this AD.
3G...........................  Within 58 months after the effective date of this AD.
3H...........................  Within 70 months after the effective date of this AD.
3I...........................  Within 82 months after the effective date of this AD.
3J...........................  Within 94 months after the effective date of this AD.
3K...........................  Within 106 months after the effective date of this AD.
3L...........................  Within 118 months after the effective date of this AD.
----------------------------------------------------------------------------------------------------------------

    (2) Thereafter, perform repetitive UIs of the affected LP 
compressor blades within every 100 flight cycles.
    (3) Use paragraph 3.A.(2) of Accomplishment Instructions of RR 
ASB No. RB.211-72-AG244, Revision 4, dated December 22, 2011, and 
paragraphs 1. through 3.B. of Appendix 1 of that ASB, or paragraphs 
3.B.(1) through 3.B.(3) of Accomplishment Instructions of RR ASB No. 
RB.211-72-AG244, Revision 4, dated December 22, 2011, and paragraphs 
1. through 3.C. of Appendix 2 of that ASB, to perform the UIs.
    (4) Do not return to service any engine with blades that failed 
the inspection required by this AD.
    (5) For blades that are removed from the engine and pass 
inspection, re-apply dry film lubricant before re-installing the 
blades.
    (6) After the effective date of this AD, do not install any 
affected LP compressor blade that has reached the initial inspection 
threshold in Table 1, unless it has passed the initial and 
repetitive UIs required by this AD.

(f) Credit for Actions Accomplished in Accordance With Previous Service 
Information

    You may take credit for the initial inspection that is required 
by paragraph (e)(1) of this AD if you performed the initial 
inspection before the effective date of this AD using RR ASB No. 
RB.211-72-AG244, dated August 7, 2009; ASB No. RB.211-72-AG244, 
Revision 1, dated January 26, 2010; ASB No. RB.211-72-AG244, 
Revision 2, dated August 18, 2011; or ASB No. RB.211-72-AG244, 
Revision 3, dated December 13, 2011.

(g) Alternative Methods of Compliance

    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.

(h) Related Information

    (1) For more information about this AD, contact Alan Strom, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803; phone: 781-238-7143; fax: 781-238-7199; email: 
alan.strom@faa.gov.
    (2) Refer to European Aviation Safety Agency AD 2012-0025, dated 
February 8, 2012, for related information.
    (3) For service information identified in this AD, contact 
Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, 
England, DE248BJ, telephone: 011-44-1332-242424; fax: 011-44-1332-
245418, or email: https://www.rolls-royce.com/contact/civil_team.jsp. You may review copies of 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.

    Issued in Burlington, Massachusetts, on April 27, 2012.
Colleen M. D'Alessandro,
Assistant Manager, Engine & Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2012-10693 Filed 5-2-12; 8:45 am]
BILLING CODE 4910-13-P
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