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Airworthiness directives › 2004-04-09

AD 2004-04-09 Airworthiness Directives; Pratt & Whitney Canada JT15D-1, -1A, and -1B Turbofan Engines

Superseded. This directive was replaced by AD 2023-03-12. Work to the current one.
2004-04-05
2004-03-01
39-13490
2003-NE-41-AD
Engine
2023-03-12

Models named: 500, 501. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

This AD applies to Pratt & Whitney Canada (PWC) JT15D-1, -1A, and -1B turbofan engines with certain impellers, part number (P/N) 3020365, installed. These engines are installed on, but not limited to, Cessna Aircraft Company Models 500 and 501 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) If you have already inspected the impeller, P/N 3020365, using PWC overhaul manual Revision 14, or if the impeller is listed in Appendix A of PWC Service Bulletin (SB) No. JT15D-72-7590, dated May 23, 2003, no further action is required. One-Time Borescope Inspection (g) Perform a one-time borescope inspection of the impeller rear face for evidence of a machined groove or step, using paragraph 3.B. of Accomplishment Instructions of PWC SB No. JT15D-72-7590, dated May 23, 2003, as follows: (1) For engines with 5,000 or more cycles-since-new (CSN) on the effective date of this AD, inspect within 250 cycles-in-service (CIS) after the effective date of this AD. (2) For engines with fewer than 5,000 CSN on the effective date of this AD, inspect before reaching 5,250 CSN. Disposition of Inspected Impellers (h) Before further flight, repair or replace impellers that do not pass the inspection requirements of paragraph 3.B.(8) of Accomplishment Instructions of PWC SB No. JT15D-72-7590, dated May 23, 2003. Alternative Methods of

Unsafe condition

This AD results from three reports of uncontained failure of the impeller. The actions specified in this AD are intended to prevent uncontained failure of the impeller and possible damage to the airplane.

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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