Airworthiness directives › 2005-18-03
AD 2005-18-03 Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines
Applicability*9
This AD applies to Pratt & Whitney (PW) PW2037, PW2040, PW2043, PW2143, PW2643, PW2037D, PW2037M, and PW2040D series turbofan engines. These engines are installed on, but not limited to Boeing 757 series and Ilyushin IL-96T series airplanes.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. (f) Within 30 days after the effective date of this AD, revise the manufacturer's Time Limits section (TLS) of the manufacturer's engine manual, as appropriate for PW PW2037, PW2040, PW2043, PW2143, PW2643, PW2037D, PW2037M, and PW2040D series turbofan engines, and for air carriers revise the approved continuous airworthiness maintenance program, by adding the following: “MANDATORY INSPECTIONS (1) Perform inspections of the following parts at each piece-part opportunity in accordance with the instructions provided in PW2000 Engine Manuals 1A6231 and 1B2412: Nomenclature Part No. EM Manual section Inspection/check Subtask Hub, LPC Assembly ALL 72-31-04 -06 Disk, HPT 1st Stage ALL 72-52-02 FPI entire disk per 72-52-00, Inspection/Check-02 72-52-02-230-007 Hub, HPT 2nd Stage ALL 72-52-16 (a) FPI entire hub per 72-52-00, Inspection/Check-02 72-52-16-230-007 (b) Eddy-current inspect hub bolt holes per 72-52-16, Inspection/Check-05. 72-52-16-200-005 Hub, HPC Front ALL 72-35-02 -05 Disk, HPC Drum Rotor Assembly (7-15) ALL 72-35-03 -04 Disk, HPC Drum Rotor Assembly (16-17) ALL 72-35-10 -05 Disk, HPC 16th Stage ALL 72-35-06 -04 Disk, HPC 17th Stage ALL 72-35-07 -04 HPC Turbine Drive Shaft Assembly ALL 72-35-08 -05 LPC Drive Turbine Shaft ALL 72-32-01 -06 Hub, Turbine Rear ALL 72-53-81 -06 Disk, LPT 3rd Stage ALL 72-53-31 -01 Disk, LPT 4th Stage ALL 72-53-41 -01 Disk, LPT 5th Stage ALL 72-53-51 -01 Disk, LPT 6th Stage ALL 72-53-61 -01 Disk, LPT 7th Stage ALL 72-53-71 -01 (2) For the purposes of these mandatory inspections, piece-part opportunity means: (i) The part is considered completely disassembled when done in accordance with the disassembly instructions in the manufacturer's engine manual to either part number level listed in the table above, and (ii) The part has accumulated more than 100 cycles in service since the last piece-part opportunity inspection, provided that the part was not damaged or related to the cause for its removal from the engine.” Alternative Methods of
Unsafe condition
This AD results from the need to require enhanced inspection of selected critical life-limited parts of PW PW2000 series turbofan engines. We are issuing this AD to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.
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