GM1 NCO.OP.110 Aerodrome
operating minima —
aeroplanes and helicopters
AIRCRAFT CATEGORIES
(a) Aircraft categories should be based on the indicated airspeed at threshold (VAT), which is equal to the stalling speed (VSO) multiplied by 1.3 or where published 1-g (gravity) stall speed (VS1g) multiplied by 1.23 in the landing configuration at the maximum certified landing mass. If both VSO and VS1g are available, the higher resulting VAT should be used.
(b) The aircraft categories specified in Table 7 should be used.
Table 7:
Aircraft categories corresponding to VAT values
|
Aircraft category |
VAT |
|
A |
Less than 91 kt |
|
B |
from 91 to 120 kt |
|
C |
from 121 to 140 kt |
|
D |
from 141 to 165 kt |
|
E |
from 166 to 210 kt |
(c) Helicopters are also eligible for Category H where applicable.
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