AD 2009-07-01 R1

AD Final Rules - 2009-07-01R1.pdf
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AD Number:
2009-07-01 R1
Document Type:
AD Final Rules
Docket Number:
FAA-2008-0224
Subject Heading:
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (RRD) Turbofan Engines
Subject:
High-pressure (HP) turbine stage 1 discs, and HP turbine stage 2 discs
Status:
Current
Citation:
Federal Register Volume 77, Number 127 (Monday, July 2, 2012)
Citation Publish Date:
07/02/2012
Effective Date:
08/06/2012
Make:
Rolls-Royce Deutschland Ltd & Co KG
Model:
BR700-715A1-30 | BR700-715B1-30 | BR700-715C1-30
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
2009-07-01
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
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[Federal Register Volume 77, Number 127 (Monday, July 2, 2012)]


[Rules and Regulations]


[Pages 39156-39157]


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


[FR Doc No: 2012-15961]


––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2008-0224; Directorate Identifier 2007-NE-44-AD; Amendment 39-17085;


AD 2009-07-01 R1]


RIN 2120-AA64


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


AGENCY:
 
Federal Aviation Administration (FAA), DOT.


ACTION:
 
Final rule; rescission.


––––––––––––––––––––––––––––––––––


SUMMARY:
 
We are rescinding an airworthiness directive (AD) for RRD BR700-715A1-30,


BR700-715B1-30, and BR700-715C1-30 turbofan engines. The existing AD resulted from the need


to reduce the published life limits of high-pressure (HP) turbine stage 1 discs, part numbers (P/Ns)


BRH20130 and BRH20131, and HP turbine stage 2 discs, P/Ns BRH19423 and BRH19427. We are


rescinding the existing AD because RRD has revised the approved published life limits of these parts


to the same or higher limits as originally certified.


DATES:
 
This AD is effective August 6, 2012.


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


received, and other information. The address for the Docket Office (phone: 800-647-5527) is


Document Management Facility, U.S. Department of Transportation, Docket Operations, M-30, West


Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.


FOR FURTHER INFORMATION CONTACT:
 
Mark Riley, Aerospace Engineer, Engine


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


Burlington, MA 01803; phone: 781-238-7758; fax: 781-238-7199; email: mark.riley@faa.gov.
2


SUPPLEMENTARY INFORMATION:


Discussion


We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to rescind an AD


that would apply to the specified products. That NPRM published in the Federal Register on February


21, 2012 (77 FR 9869). That NPRM proposed to rescind AD 2009-07-01 (74 FR 12086, March 23,


2009) for RRD BR700-715A1-30, BR700-715B1-30, and BR700-715C1-30 turbofan engines. AD


2009-07-01 resulted from the need to reduce the published life limits of HP turbine stage 1 discs,


P/Ns BRH20130 and BRH20131, and HP turbine stage 2 discs, P/Ns BRH19423 and BRH19427. We


are rescinding that AD because RRD has revised the approved published life limits of these parts to


the same or higher limits as originally certified. We evaluated all information and determined that


allowing the increase in the published part life limits is acceptable.


Comments


We gave the public the opportunity to participate in developing this AD. We received no


comments on the NPRM (77 FR 9869, February 21, 2012).


Conclusion


We reviewed the relevant 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


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),


(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.