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NCO.OP.144 Destination alternate aerodromes planning minima — helicopters

Regulation (EU) 2021/2237

An aerodrome shall not be specified as a destination alternate aerodrome unless the available current meteorological information indicates, for the period from 1 hour before until 1 hour after the estimated time of arrival, or from the actual time of departure to 1 hour after the estimated time of arrival, whichever is the shorter period,

(a) for an alternate aerodrome with an IAP:

(1) a ceiling of at least 200 ft above the DH or MDH associated with the IAP; and

(2) a visibility of at least 1 500m by day or 3 000m by night; or

(b) for an alternate aerodrome without an IAP:

(1) a ceiling of at least the higher of 2 000ft and the minimum safe IFR height; and

(2) a visibility of at least 1 500m by day or 3 000m by night.