TM 1-1510-262-10
f. Minimum Static Takeoff Power (Ice Vanes Retracted). Enter the graph at 15C FAT and 3499 feet pressure
altitude:
Minimum Static Takeoff Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.5%
g. Takeoff Speeds. Tables are provided for takeoff decision speed (V I ), rotation speed (V R ), takeoff safety
speed (V 2 ), and all-engines takeoff safety speed. In order to determine the takeoff speeds for 15C FAT, 3499
feet pressure altitude, and 16,000 pounds takeoff weight, enter the tables at 2000 ft and 4000 ft pressure altitude,
10C and 20C FAT, and 16,000 pounds takeoff weight, then interpolate to ind the actual values for the speciied
conditions:
V 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 KTS (laps up), 108 KTS (laps approach)
V R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 KTS (laps up), 113 KTS (laps approach)
V 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 KTS (laps up), 114 KTS (laps approach)
V 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
140 KTS (laps up), 126 KTS (laps approach)
h. Minimum Field Length. The following example illustrates the use of graphs which may restrict takeoff weight
due to ield length available under existing conditions.
(1) Takeoff distance. Enter the graphs at 15C, 3499 feet pressure altitude, 16,000 pounds, 1.9% down-
hill runway gradient, and 10 knots headwind component, and obtain the following results:
Ground Roll (laps up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3511 ft
Takeoff Distance (laps up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4864 ft
Ground Roll (laps approach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2909 ft
Takeoff Distance (laps approach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3886 ft
(2) Accelerate-stop distance. Enter the graphs at 15C, 3499 feet pressure altitude, 16,000 pounds,
1.9% downhill runway gradient, and 10 knots headwind component, and obtain the following results:
Accelerate-Stop Distance (laps up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5877 ft
Accelerate-Stop Distance (laps approach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4972 ft
(3) Accelerate-go distance. Enter the graphs at 15C, 3499 feet pressure altitude, 16,000 pounds, 1.9%
downhill runway gradient, and 10 knots headwind component, and obtain the following results:
Accelerate-Go Distance (laps up)
...............................................
7172 ft
Accelerate-Go Distance (laps approach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5069 ft
The minimum recommended runway length is the longest of the distances determined above for the selected lap
setting. The accelerate-go distance (laps up) would exceed the available runway length, so a laps-approach takeoff
must be calculated if it is desired to allow for the accelerate-go distance (which is not a regulatory requirement, but
a recommended practice).
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