3 airworthiness directives and regulations affecting Pratt & Whitney Canada PT6B.
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New ADs and bulletins for Pratt & Whitney Canada PT6B, summarized like the ones below, every Monday.
EASA SIB CASA-2025-07
Jul 22, 2025The Transport Canada Civil Aviation Safety Alert CASA-2025-07 addresses contamination issues in the Py lines and Fuel Control Unit (FCU) of Pratt & Whitney Canada Corp. PT6B-37A model engines. This alert informs owners, operators, and maintainers about reported contamination that can affect engine performance during critical phases such as takeoff and climb.
EASA AD CF-2015-01R2
Oct 5, 2020Airworthiness Directive CF-2015-01R2 is issued by Transport Canada concerning Pratt & Whitney Canada PT6B-37A engines installed on AW119MKII helicopters. The directive addresses incorrect engine torque indication caused by axial migration of bearings in the engine torque sensing gear, which can lead to undetected over-torque conditions. This revision updates compliance requirements to include an operating hours limit for bearing replacement.
EASA AD CF-2019-05
Feb 11, 2019Canadian Airworthiness Directive CF-2019-05 addresses galvanic corrosion contamination in the Fuel Control Unit (FCU) of Pratt & Whitney Canada PT6B-37A engines, serial number PCE-PU0289 and earlier. The directive mandates replacement of affected FCUs to prevent engine control loss and potential inflight shutdowns. This AD aims to enhance engine reliability and safety for operators using these specific engines.