Airworthiness directives › 2013-15-08
AD 2013-15-08 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines
Applicability*9
This AD applies to Pratt & Whitney Canada Corp. (P&WC) PW118A, PW118B, PW119B, PW119C, PW123, PW123B, PW123C, PW123D, PW123E, PW123AF, PW124B, PW125B, PW126A, PW127, PW127E, PW127F, PW127G, and PW127M turboprop engines with a first-stage power turbine (PT) blade, part number (P/N) 3120973-01, P/N 3120983-01, or P/N 3054053-01, installed, that has a serial number listed in Table 1 of the Appendix of P&WC Service Bulletin No. PW100-72-21823, Revision 3, dated March 8, 2013.
Compliance
After the effective date of this AD, do not install into any engine any first-stage PT blade that has not passed the inspection required by paragraph (e)(2) of this AD.
Required actions
For the purpose of this AD, module level exposure is when the affected engine is inducted into the engine shop, the PT module is removed from the engine, and access is available to the necessary subassembly.
Unsafe condition
Unless already done, within 60 months after the effective date of this AD or when the affected PT blades are at module level exposure, whichever occurs first, do one of the following: (1) Replace the affected first-stage PT blade with a blade eligible for installation; or (2) Perform a one-time X-ray inspection of the affected first-stage PT blades, using paragraph 3.F.(2) of the Accomplishment Instructions of P&WC Service Bulletin No. PW100-72-21823, Revision 3, dated March 8, 2013.
Affected ADs
None.
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