NCC.OP.151 Destination alternate aerodromes — aeroplanes

SI No. 1290/2024

Text in magenta in force from 30 October 2025

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

  1. the available current meteorological information indicates that, 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, the approach and landing may be made under visual meteorological conditions (VMC); or

  2. the place of intended landing is isolated and:

    1. an instrument approach procedure is prescribed for the aerodrome of intended landing; and

    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:

      1. a cloud base of at least 300 m (1000 ft) above the minimum associated with the instrument approach procedure; and

      2. visibility of at least 5.5 km or of 4 km more than the minimum associated with the procedure.

On 30 October 2025 point (b) will be replaced by:

  1. the place of intended landing is designated an isolated aerodrome and:

    1. an instrument approach procedure is prescribed for the aerodrome of intended landing; and

    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:

      1. a cloud base of at least 300 m (1000 ft) above the minimum associated with the instrument approach procedure; and

      2. visibility of at least 5.5 km or of 4 km more than the minimum associated with the procedure.