Canadian Aviation Regulations

500.01 In this Part,

acoustical change

acoustical change, in respect of an aircraft, means a change in the type design of the aircraft or the aircraft engine that results in an increase in the noise emission levels of that aircraft; (modification acoustique)

change in the emissions

change in the emissions, in respect of an aircraft, means a change in the type design of the aircraft or the aircraft engine that results in an increase in

• (a) fuel venting of the aircraft if the aircraft is turbine-powered; or

• (b) the exhaust emission of a turbine engine; (modification des émissions)

rotorcraft

rotorcraft means a gyroplane or a helicopter; (giravion)