AD 2023-03-02
Effective 03/21/2023 · Published 02/14/2023
Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines
Summary
The FAA is adopting a new airworthiness directive (AD) for certain Pratt & Whitney Canada Corp. (P&WC) PT6E-67XP model turboprop engines with serial number HP0194 and earlier. This AD is prompted by multiple reports of engines failing to achieve required power (torque) during high power applications due to internal leaks in the bleed-off valves (BOVs). This AD requires replacement of the compressor BOV assembly, rep…