Canadian Aviation Regulations (SOR/96-433)

Regulations are current to 2014-10-15 and last amended on 2014-05-29. Previous Versions

Altimeter-setting and Operating Procedures in the Altimeter-setting Region

 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.

Altimeter-setting and Operating Procedures in the Standard Pressure Region

  •  (1) When an aircraft is operated in the standard pressure 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) before reaching the flight level at which the flight is to be conducted, set the altimeter to 29.92 inches of mercury or 1,013.2 millibars; 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.

  • (2) Notwithstanding paragraph (1)(c), when a holding procedure is being conducted before landing at an aerodrome located in the standard pressure region, each flight crew member who occupies a flight crew member position that is equipped with an altimeter shall set the altimeter to the altimeter setting of the aerodrome immediately before descending below the lowest flight level at which the holding procedure is conducted.

Altimeter-setting and Operating Procedures in Transition between Regions

 Except where otherwise authorized by an air traffic control unit, each flight crew member who occupies a flight crew member position that is equipped with an altimeter shall

  • (a) when flying from the altimeter-setting region into the standard pressure region, set the altimeter to 29.92 inches of mercury or 1,013.2 millibars immediately after the aircraft’s entry into the standard pressure region; and

  • (b) when flying from the standard pressure region into the altimeter-setting region, 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, the altimeter setting of a station near the route of flight immediately before the aircraft’s entry into the altimeter-setting region.

Flight over the High Seas

 The pilot-in-command of a Canadian aircraft that is in flight over the high seas shall comply with the applicable Rules of the Air set out in Annex 2 to the Convention and the applicable Regional Supplementary Procedures set out in Document 7030/4 of the International Civil Aviation Organization (ICAO).