EASA Regulations for Pratt & Whitney Canada PT6B

3 airworthiness directives and regulations affecting Pratt & Whitney Canada PT6B.

EASA SIB CASA-2025-07

Py Lines and Fuel Control Unit Contamination

The 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.

Jul 22, 2025

Safety Information BulletinMaintenanceSafety MgmtPratt & Whitney Canada PT6B

EASA AD CF-2015-01R2

Engine Indicating - Incorrect Engine Torque Indication

Airworthiness 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.

Oct 5, 2020

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney Canada PT6BAgustaWestland AW119MKII

EASA AD CF-2019-05

Engine Control - Fuel Control Unit Galvanic Corrosion Contamination

Canadian 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.

Feb 11, 2019

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney Canada PT6B