SPO.OP.151 Destination alternate aerodromes – helicopters

For IFR flights, the pilot-in-command shall specify at least one weather-permissible destination alternate aerodrome in the flight plan, unless:

(a)an instrument approach procedure is prescribed for the aerodrome of intended landing and the available current meteorological information indicates that the following meteorological conditions will exist from 2 hours before to 2 hours after the estimated time of arrival, or from the actual time of departure to 2 hours after the estimated time of arrival, whichever is the shorter period:

(1)a cloud base of at least 120 m (400 ft) above the minimum associated with the instrument approach procedure; and

(2)visibility of at least 1 500 m more than the minimum associated with the procedure; or

(b)the place of intended landing is isolated and:

(1)an instrument approach procedure is prescribed for the aerodrome of intended landing;

(2)available current meteorological information indicates that the following meteorological conditions will exist from 2 hours before to 2 hours after the estimated time of arrival:

(i)the cloud base is at least 120 m (400 ft) above the minimum associated with the instrument approach procedure;

(ii)visibility is at least 1 500 m more than the minimum associated with the procedure.