AD 2009-22-06

AD Final Rules - 2009-22-06.pdf
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AD Number:
2009-22-06
Document Type:
AD Final Rules
Docket Number:
FAA-2009-0294
Subject Heading:
Airworthiness Directives; International Aero Engines AG (IAE) V2500-A1, V2527E-A5, V2530-A5, and V25...Show more
Subject:
HPC stage 9-12 disc assembly
Status:
Current
Citation:
Federal Register: October 26, 2009 (Volume 74, Number 205)
Citation Publish Date:
10/26/2009
Effective Date:
11/30/2009
Make:
International Aero Engines AG (IAE)
Model:
V2500-A1 | V2527E-A5 | V2528-D5 | V2530-A5
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
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[Federal Register: October 26, 2009 (Volume 74, Number 205)]


[Rules and Regulations]


[Page 54895-54896]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]


[DOCID:fr26oc09-1]


––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2009-0294; Directorate Identifier 2009-NE-08-AD; Amendment 39-16057;


AD 2009-22-06]


RIN 2120-AA64


Airworthiness Directives; International Aero Engines AG (IAE) V2500-A1, V2527E-A5,


V2530-A5, and V2528-D5 Turbofan Engines


AGENCY:
 
Federal Aviation Administration (FAA), DOT.


ACTION:
 
Final rule.


––––––––––––––––––––––––––––––––––


SUMMARY:
 
The FAA is adopting a new airworthiness directive (AD) for International Aero


Engines AG (IAE) V2500-A1, V2527E-A5, V2530-A5, and V2528-D5 turbofan engines. This AD


requires reducing the published life limit of certain high-pressure compressor (HPC) stage 9-12 disc


assemblies. This AD also removes from service those HPC stage 9-12 disc assemblies using a


drawdown schedule. This AD results from IAE updating the low-cycle-fatigue (LCF) life analysis for


certain HPC stage 9-12 disc assemblies. We are issuing this AD to prevent an uncontained failure of


the HPC stage 9-12 disc assembly, resulting in an in-flight engine shutdown and possible damage to


the airplane.


DATES:
 
This AD becomes effective November 30, 2009.


ADDRESSES:
 
You can get the service information identified in this AD from International Aero


Engines AG, 400 Main Street, East Hartford, CT 06108; telephone: (860) 565-5515; fax: (860) 565-


5510.


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:
 
Kevin Dickert, Aerospace Engineer, Engine


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


Burlington, MA 01803; e-mail: kevin.dickert@faa.gov; telephone (781) 238-7117; fax (781) 238-


7199.
2


SUPPLEMENTARY INFORMATION:
 
The FAA proposed to amend 14 CFR part 39 with a


proposed AD. The proposed AD applies to IAE V2500-A1, V2527E-A5, V2530-A5, and V2528-D5


turbofan engines. We published the proposed AD in the Federal Register on June 29, 2009 (74 FR


30981). That action proposed to require reducing the published life limit of certain HPC stage 9-12


disc assemblies. That action also proposed to remove from service those HPC stage 9-12 disc


assemblies using a drawdown schedule.


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 or on the determination of the cost to the public.


Conclusion


We have carefully reviewed the available data and determined that air safety and the public


interest require adopting the AD as proposed.


Costs of Compliance


We estimate that this AD will affect 18 engines installed on airplanes of U.S. registry. We also


estimate that it will take about 200 work-hours per engine to perform the actions, and that the average


labor rate is $80 per work-hour. The prorated cost due to a life reduction for a HPC stage 9-12 disc


assembly installed in a V2500-A1 engine, is about $5,600 per engine, and for one installed in a


V2527E-A5, V2530-A5, or V2528-D5 engine, is about $29,700 per engine. Based on these figures,


we estimate the cost of the AD on U.S. operators to be $485,200.


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