Canadian Aviation Regulations

602.129 (1) With respect to an aeroplane, for the purposes of subsection (3), the RVR is below the minimum RVR if

• (a) where both RVR “A” and RVR “B” are measured, RVR “A” is less than 1,200 feet and RVR “B” is less than 600 feet; or

• (b) where only one of RVR “A” or RVR “B” is measured, the RVR is below 1,200 feet.

(2) With respect to a helicopter, for the purposes of subsection (3), the RVR is below the minimum RVR if

• (a) where both RVR “A” and RVR “B” are measured, RVR “A” is less than 1,200 feet; or

• (b) where only one of RVR “A” or RVR “B” is measured, the RVR is below 1,200 feet.

(3) Where the RVR is reported to be below the minimum RVR as described in subsection (1) or (2), as applicable, the pilot-in-command of an IFR aircraft conducting an instrument approach shall discontinue the approach unless

• (a) when the RVR report is received, the aircraft

  • (i) has passed the outer marker or the fix that serves as the outer marker, and

  • (ii) is in descent to the runway;

• (b) the aircraft is on a training flight where a landing is not intended, and the appropriate air traffic control unit is informed that a missed approach procedure will be initiated at or above the decision height or the minimum descent altitude, as appropriate;

• (c) the RVR is fluctuating above and below the minimum RVR and the ground visibility of the aerodrome where the runway is located is reported to be at least one-quarter mile; or

• (d) the pilot-in-command of the aircraft is conducting a precision approach to CAT III minima.