NCC.OP.147 Destination alternate aerodromes planning minima - aeroplanes

SI No. 1290/2024

Text in magenta in force from 30 October 2025

The operator must not select an aerodrome as a destination alternate aerodrome for an aeroplane unless the latest available weather information indicates that the criteria in points (a), (b) or (c) will be met during either the period from an hour before the estimated time of arrival (“ETA”) to an hour after the ETA or the period from the actual time of departure to an hour after the ETA whichever is the shorter.

1. for an alternate aerodrome with an available instrument approach operation with DH less than 250 ft:

   1. a ceiling of at least 200 ft above the DH or MDH associated with the instrument approach operation; and

   2. a visibility of at least the higher of 1500 m and 800 m above the instrument approach operation RVR or VIS minima.

2. for an alternate aerodrome with an instrument approach operation with DH or MDH of 250 ft or more:

   1. a ceiling of at least 400 ft above the DH or MDH associated with the instrument approach operation; and

   2. a visibility of at least 3000 m.

3. for an alternate aerodrome without an IAP:

   1. a ceiling of at least the higher of 2000 ft and the minimum safe IFR height; and

   2. a visibility of at least 5000 m.