Airworthiness directives › 2023-03-02
AD 2023-03-02 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines
Applicability*9
This AD applies to Pratt & Whitney Canada Corp. (P&WC) PT6E-67XP model turboprop engines with serial number HP0194 and earlier, as identified in Transport Canada AD CF-2022-26, dated May 12, 2022 (Transport Canada AD CF-2022-26).
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraphs (h) and (i) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, Transport Canada AD CF-2022-26.
Unsafe condition
This AD was prompted by reports of multiple incidents in which engines were unable to achieve the required power (torque) during high power applications due to internal leaks in the bleed-off valves (BOVs) caused by glass bead contamination. The FAA is issuing this AD to prevent internal leaks in the BOVs, and to prevent the failure of the engine to achieve the required power (torque) during high power applications. The unsafe condition, if not addressed, could result in loss of thrust control and loss of the airplane.
Affected ADs
None.
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