Canadian Aviation Regulations

602.76 (1) The pilot-in-command of an aircraft for which an IFR flight plan or an IFR flight itinerary has been filed shall follow the procedure set out in subsection (2) where the pilot-in-command intends to make any change in the plan or itinerary in respect of

• (a) the cruising altitude or cruising flight level;

• (b) the route of flight;

• (c) the destination aerodrome;

• (d) in the case of a flight plan, the true airspeed at the cruising altitude or cruising flight level, where the change intended is five per cent or more of the true airspeed specified in the IFR flight plan; or

• (e) the Mach number, where the change intended is .01 or more of the Mach number that has been included in the air traffic control clearance.

(2) A pilot-in-command of an aircraft who intends to make any of the changes in the IFR flight plan or the IFR flight itinerary that are referred to in subsection (1) shall

• (a) notify as soon as practicable an air traffic control unit or the responsible person, as the case may be, of the intended change; and

• (b) where the flight is being conducted in controlled airspace, receive an air traffic control clearance before making the intended change.

(3) The pilot-in-command of an aircraft for which a VFR flight plan or a VFR flight itinerary has been filed shall follow the procedure set out in subsection (4) where the pilot-in-command intends to make a change in the plan or itinerary in respect of

• (a) the route of flight;

• (b) the duration of the flight; or

• (c) the destination aerodrome.

(4) A pilot-in-command of an aircraft who intends to make any of the changes in the VFR flight plan or the VFR flight itinerary that are referred to in subsection (3) shall notify as soon as practicable an air traffic control unit, a flight service station, a community aerodrome radio station or the responsible person, of the intended change.