The term complex motor-powered is defined in Article 3 (letter (j)) of the Basic Regulation:
Other than complex motor-powered aircraft means an aircraft that is not:
an aeroplane:
- with a maximum certificated take-off mass exceeding 5700 kg, or
- certificated for a maximum passenger seating configuration of more than nineteen, or
- certificated for operation with a minimum crew of at least two pilots, or
- equipped with (a) turbojet engine(s) or more than one turboprop engine, or
- more than one turboprop engine and a MCTOM exceeding 5700 kg*.
a helicopter certificated:
- for a maximum take-off mass exceeding 3175 kg, or
- for a maximum passenger seating configuration of more than nine, or
- for operation with a minimum crew of at least two pilots, or
- a tilt rotor aircraft.
*A derogation has been agreed to allow non-commercial operations of twin turboprop aeroplanes, with a MCTOM of 5,700 kg or less, to be operated under Part-NCO rules.