AD 2012-11-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Canada | Airworthiness Directives; Pratt & Whitney Canada Turboprop Engines |
Unsafe Condition
Cracks in propeller shafts due to improper nickel plating repair not performed in accordance with the current published Pratt & Whitney Canada Cleaning Inspection and Repair (CIR) Manual.
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Required Actions
Remove from service propeller shafts with a serial number listed in Table 1 of P&WC ASB No. PW100-72-A21802, Revision 4, within 30 days after the effective date. Perform initial and repetitive inspections (visual or ultrasonic) of propeller shafts with a serial number listed in Table 1 or Table 2 of P&WC ASB No. PW100-72-A21813, Revision 3, within 200 engine flight hours (EFH) or 40 days, whichever occurs first after the effective date.
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Compliance Time
Within 30 days for removal of high-risk propeller shafts; within 200 engine flight hours or 40 days for inspections of other affected propeller shafts.
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Affected Aircraft
Pratt & Whitney Canada PW118, PW118A, PW118B, PW119B, PW119C, PW120, PW120A, PW121, PW121A, PW123, PW123B, PW123C, PW123D, PW123E, PW123AF, PW124B, PW125B, PW126A, PW127, PW127E, PW127F, PW127G, and PW127M turboprop engines with specific serial numbers listed in the referenced service bulletins.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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