Airworthiness Directives (ADs)
CAA-2010-06-011
The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.
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Issue Date
- 2010/06/30
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Applicability
- This AD applies to: (1) CFM International CFM56-5, -5B, and -7B series turbofan engines with stage 3 low-pressure turbine (LPT) disks part number (P/N) 336-002-006-0, installed with the following serial numbers (S/Ns), DE255844, DE256388, DE256622, DE256623, DE256625, DE256627, DE256628, DE256631, and DE256637.
(2) CFM International, S.A. has stated that none of these affected disk S/Ns were originally installed on any CFM56-5 turbofan engine, however, that disk P/N is certified for use on CFM56-5 engines. (3) The -5 and -5B series engines are installed on, but not limited to, Airbus A318, A319, A320, and A321 airplanes, and the -7B series engines are installed on, but not limited to, Boeing 737 series airplanes.
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Model Number
- CFM International, S.A. CFM56-5, -5B, and -7B Series Turbofan Engines
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CAA AD Number
- CAA-2010-06-011
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2010-13-09
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Effective Date
- 2010/07/26
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Subject
- This AD requires removing from service, nine stage 3 low-pressure turbine (LPT) disks, identified by serial number (S/N). This AD results from the discovery of a material nonconformity requiring removal of the disk before the certified disk life of certain stage 3 LPT disks. We are issuing this AD to prevent uncontained failure of the stage 3 LPT disk and damage to the airplane.
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Reference Publications (Revision/ATA/SB)
- Service Bulletin (SB) No. CFM56-5B S/B 72-0733, and SB No. CFM56-7B S/B 72-0743
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Remarks
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