TM 1-1510-225-10
7-6
same speed. Use the tabular data table at the top of
Figure 7-21, Take-Off Distance, Flaps UP or Figure
7-25, Take-Off Distance, Flaps APPROACH.
The takeoff configuration for this example is
Flaps UP. The V1/Vr speed is 112 KIAS.
Enter the speed, 112 KIAS, in the appropriate
block on the TOLD card.
(11) V2 / Vyse. Use the tabular data table at the
top of Figure 7-31, Climb One Engine Inoperative. In
accordance with the ATM, flaps are retracted just after
liftoff at 105 KIAS for both a normal takeoff and in the
event of an engine failure after V1. The CLIMB
SPEED V2 - KNOTS, Figure 7-31, is Vyse and is
essentially the same speed as V2 for a takeoff with
flaps at 0%. Consequently, V2 flaps 0% and Vyse are
used as the V2 speed for entry on the TOLD card. V2 /
Vyse for a 12,600 pound aircraft is 122 KIAS.
Enter the speed in the appropriate block on the
TOLD card.
(11A)
If conducting an obstacle clearance
climb, use the Vx speed from the TAKEOFF
DISTANCE FLAPS APPROACH chart.
(12) Climb Gradient Altitude. This is the
altitude to which the single engine climb gradient must
be continued as specified in the applicable DP. The
information is advisory and intended as a reminder to
the crew of the altitude to which they must climb at V2 /
Vyse in order to clear obstacles.
For this example, the DP specified climbing to
5000 feet MSL.
Enter the altitude, 5000 feet, in the appropriate
block on the TOLD card.
NOTE
Items 13 through 17 are initially calculated
at takeoff weight as a contingency for a
necessary return to the takeoff airport right
after departure. The items must be re-
calculated for the arrival at the destination.
(13) Runway Length Available. This is the
runway length available for landing.
For this example, the runway length is 6000 feet
and there is no displaced threshold or other
information limiting the useful landing distance of the
runway.
Enter the length, 6000 feet, in the appropriate
block on the TOLD card.
(14) Landing Weight. For the takeoff TOLD
card, landing and takeoff weights are the same. For
arrival at the destination the TOLD card must be re-
calculated to reflect actual aircraft weight and airport
conditions.
For this example, takeoff and landing weight is
12,600 pounds.
Enter the weight, 12,600 pounds, in the
appropriate block on the TOLD card.
(15) Vref Speed. This speed is 1.3 times Vso at
the intended landing weight if the landing will be
accomplished using Flaps DN. If the landing will be
accomplished with the Flaps at APPROACH, or any
setting greater than APPROACH but less than DOWN,
then Vref is 1.3 times Vs1 (the stall speed for FLAPS
APPROACH). Use Figure 7-13, Stall Speeds Power
Idle to determine applicable stall speeds.
For this example, the landing weight (assuming
an emergency return to the departure airport) is
12,600 pounds a landing with the Flaps DOWN is
planned. The Vso for a 12,600-pound aircraft is
75 KIAS. Therefore, Vref is 1.3 times 75 = 97.5 and is
rounded up to 98 KIAS.
There is another method to determine Vref when
the landing will be accomplished with the Flaps
DOWN. Subtract 5 KIAS from the APPROACH
SPEED ~ KNOTS obtained from the tabular data table
at the top of Figure 7-107, Landing Distance Without
Propeller
Reversing,
Flaps
DOWN.
For
a
12,600-pound aircraft, the given APPROACH SPEED
is 103 KIAS 5 KIAS = 98 KIAS.
NOTE
If the aircraft will be landed with FLAPS
less
than
full
DOWN,
the
LANDING
DISTANCE- FLAPS UP (Figure 7-108 or
7-110) must be used to obtain the landing
distance for the TOLD card
As another example, if the landing was planned
using the Flaps at APPROACH, or any intermediate
setting short of DOWN, then the Vref speed would be
1.3 times Vs1 (the FLAPS APPROACH stall speed).
FLAPS APPROACH stall speed for a 12,600 pound
aircraft is 85 KIAS. Therefore, the Vref speed is 1.3
times 85 = 110.5 and is rounded up to 111 KIAS.
For this example with Flaps DOWN enter the Vref
speed, 98 KIAS at the appropriate place on the TOLD