Canadian Aviation Regulations

605.37 (1) Subject to subsections (2) and (3), no person operating under Subpart 4 or 5 of Part VII shall conduct a take-off in a turbo-jet-powered aeroplane that has a MCTOW of more than 15 000 kg (33,069 pounds) and for which a type certificate has been issued authorizing the transport of 10 or more passengers, unless the aeroplane is equipped with a ground proximity warning system.

(2) An aeroplane referred to in subsection (1) may be operated without a serviceable ground proximity warning system if a minimum equipment list has been approved by the Minister in respect of the operator of the aeroplane pursuant to subsection 605.07(3) and the aeroplane is operated in accordance with the minimum equipment list.

(3) Where, in the interests of aviation safety, it is necessary during a flight to deactivate any mode of a ground proximity warning system, the pilot-in-command of the aeroplane may deactivate that mode if the deactivation is performed in accordance with the aircraft flight manual, aircraft operating manual, flight manual supplement or minimum equipment list.