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 Anglais glossaire

extended twin-engine operation

aviat. Any flight by an aeroplane with two turbine power-units where the flight time at the one power-unit inoperative cruise speed in ISA and still air conditions, from a point on the route to an adequate alternate aerodrome, is greater than the threshold time approved by the State of the Operator.
Extended Twin-Engine Operations
: 4 phrases, 1 sujets
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