NCO.OP.112 Aerodrome operating minima — circling operations with aeroplanes

SI No. 1290/2024

Text in magenta in force from 30 October 2025

1. The MDH for a circling operation with aeroplanes shall not be lower than the highest of:

   1. the published circling OCH for the aeroplane category;

   2. the minimum circling height derived from Table 1; or

   3. the DH/MDH of the preceding instrument approach procedure.

2. The minimum visibility for a circling operation with aeroplanes shall be the highest of:

   1. the circling visibility for the aeroplane category, if published;

   2. the minimum visibility derived from Table 2; or

   3. the runway visual range/converted meteorological visibility (RVR/CMV) of the preceding instrument approach procedure.

Table 1 MDH and minimum visibility for circling vs. aeroplane category

Height and visibility	Category A	Category B	Category C	Category D
MDH (ft)	400	500	600	700
Minimum meteorological visibility (m)	1500	1600	2400	3600