History — 602.35

602.35 When an aircraft is operated in the altimeter-setting region, each flight crew member who occupies a flight crew member position that is equipped with an altimeter shall (a) immediately before conducting a take-off from an aerodrome, set the altimeter to the altimeter setting of the aerodrome or, if that altimeter setting is not obtainable, to the elevation of the aerodrome; (b) while in flight, set the altimeter to the altimeter setting of the nearest station along the route of flight or, where the nearest stations along the route of flight are separated by more than 150 nautical miles, to the altimeter setting of a station near the route of flight; and (c) immediately before commencing a descent for the purpose of landing at an aerodrome, set the altimeter to the altimeter setting of the aerodrome, if that altimeter setting is obtainable.