Surprise AD for Pratt & Whitney PT6 engine :

An Airworthiness Directive has hit Pratt & Whitney Canada's signature turboprop engine, the PT-6, previously considered to be 'bomb proof'.

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United Kingdom , Canada , , Pratt Whitney Canada , Whitney Canada , Cessna Caravan , Beechcraft King Air , Airworthiness Directive , Transport Canada , Second Stage Power Turbine , Part Number ,