Airworthiness directives › 2000-23-12
AD 2000-23-12 Airworthiness Directives; CFE Company Model CFE738-1-1B Turbofan Engines
Models named: CFE738-1-1B turbofan. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
CFE Company Model CFE738-1-1B turbofan engines, installed on but not limited to the Dassault Aviation Falcon 2000 series airplanes. Note 1: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
Compliance
Required as indicated, unless accomplished previously. To prevent failure of certain high pressure compressor (HPC) rotor components, which could result in an uncontained engine failure and damage to the airplane, accomplish the following: (a) Remove from service certain stage 4 and 5 blisks and impeller aft shafts prior to exceeding the new cyclic life limits as follows, and replace with serviceable parts: Nomenclature Part No. (P/N) Cyclic life limit Stage 4 and 5 Blisk 6079T74P08 6,700 cycles since new (CSN). Impeller Aft Shaft 6079T80P04 5,100 CSN. 6079T80P05 2,160 CSN. 6079T80P06 7,100 CSN. 6079T80P07 7,100 CSN. (b) Except for the provisions of paragraph (c) of this AD, no parts, identified by P/N in paragraph (a) of this AD, that exceed the new life limits may be installed. Alternative Methods of Compliance (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Engine Certification Office (ECO). Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, ECO. Note 2: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the ECO. Special Flight Permits (d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. Effective Date of This AD (e) This amendment becomes effective on January 16, 2001. Issued in Burlington, Massachusetts, on November 6, 2000. Donald Plouffe, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 00-28961 Filed 11-13-00; 8:45 am] BILLING CODE 4910-13-P
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1