AD 98-09-27R1

AD Final Rules - 98-09-27R1.pdf
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AD Number:
98-09-27R1
Document Type:
AD Final Rules
Docket Number:
FAA-2010-0960
Subject Heading:
Airworthiness Directives; Rolls-Royce plc RB211-Trent 768, 772, and 772B Turbofan Engines
Subject:
Thrust Reverser Hinge
Status:
Current
Citation:
Federal Register Volume 76, Number 44 (Monday, March 7, 2011)
Citation Publish Date:
03/07/2011
Effective Date:
04/11/2011
Make:
Rolls-Royce plc
Model:
RB211 Trent 768-60 | RB211 Trent 772-60 | RB211 Trent 772B-60
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
98-09-27
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
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[Federal Register Volume 76, Number 44 (Monday, March 7, 2011)]


[Rules and Regulations]


[Pages 12277-12278]


From the Federal Register Online via the Government Printing Office [www.gpo.gov]


[FR Doc No: 2011-4831]


––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2010-0960; Directorate Identifier 98-ANE-09-AD; Amendment 39-16620; AD


98-09-27R1]


RIN 2120-AA64


Airworthiness Directives; Rolls-Royce plc RB211-Trent 768, 772, and 772B Turbofan Engines


AGENCY:
 
Federal Aviation Administration (FAA), DOT.


ACTION:
 
Final rule.


––––––––––––––––––––––––––––––––––


SUMMARY:
 
We are rescinding an existing airworthiness directive (AD) for the products listed


above. The existing AD, AD 98-09-27, resulted from aircraft certification testing which revealed that


stresses on the thrust reverser hinge were higher than had been anticipated during engine certification,


and the United Kingdom Civil Aviation Authority, issuing AD 008-03-97. Since we issued AD 98-


09-27, we discovered that its requirements were duplicated in airplane-level AD 2001-09-14, issued


by the FAA Transport Airplane Directorate. We proposed to rescind the engine-level AD.


DATES:
 
This AD becomes effective April 11, 2011.


ADDRESSES:
 
The Docket Operations office is located at Docket Management Facility, U.S.


Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room


W12-140, Washington, DC 20590-0001.


FOR FURTHER INFORMATION CONTACT:
 
Alan Strom, Aerospace Engineer, Engine


Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park,


Burlington, MA 01803; e-mail: alan.strom@faa.gov; telephone (781) 238-7143; fax (781) 238-7199.


SUPPLEMENTARY INFORMATION:


Discussion


On April 23, 1998, the FAA Engine & Propeller Directorate issued engine AD 98-09-27 (63 FR


24911, May 6, 1998). On April 30, 2001, the FAA Transport Airplane Directorate issued airplane AD


2001-09-14 (66 FR 23838, May 10, 2001). Those ADs both require the same initial and repetitive


visual inspections of Rolls-Royce plc RB211-Trent 768 and 772 series turbofan engine thrust reverser


1
hinge lugs and attachment ribs for cracks, and, if necessary, removal from service and replacement


with serviceable parts.


Since we issued engine AD 98-09-27 and airplane AD 2001-09-14, we determined that duplicate


ADs to address the same unsafe condition were unnecessary. We issued a notice of proposed


rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to the specified


products. That NPRM was published in the Federal Register on November 15, 2010 (75 FR 69611),


and proposed to rescind AD 98-09-27, Amendment 39-10508 (63 FR 24911, May 6, 1998).


Examining the AD Docket


You may examine the AD docket on the Internet at http://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 AD, the regulatory evaluation, any comments received, and


other information. The street address for the Docket Operations office (telephone (800) 647-5527) is


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


receipt.


Comments


We provided the public the opportunity to participate in the development of this AD. We


received no comments on the proposal.


Conclusion


We reviewed the available data and determined that air safety and the public interest require


adopting the AD as proposed.


Authority for this Rulemaking


Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety.


Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation


Programs, describes in more detail the scope of the Agency's authority.


We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III,


Section 44701, ''General requirements.'' Under that section, Congress charges the FAA with


promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices,


methods, and procedures the Administrator finds necessary for safety in air commerce. This


regulation is within the scope of that authority because it addresses an unsafe condition that is likely


to exist or develop on products identified in this rulemaking action.


Regulatory Findings


We have determined that this AD will not have federalism implications under Executive Order


13132. This AD will not have a substantial direct effect on the States, on the relationship between the


national government and the States, or on the distribution of power and responsibilities among the


various levels of government.


For the reasons discussed above, I certify that this AD:


(1) Is not a ''significant regulatory action'' under Executive Order 12866;


(2) Is not a ''significant rule'' under 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.


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