TM 55-1510-219-10
Pressure altitude at RNO:
29.92 in.
Hg29.83 in.
Hg = 0.09
0.09 x 1000 feet = +90 feet
The pressure altitude at RNO is 90 feet above field
elevation.
Pressure altitude at RNO = 4412 +90 = 4502 feet.
7-4.
TAKEOFF WEIGHT.
Maximum takeoff weight (from limitations section)
= 14,200 pounds.
7-5.
TAKEOFF WEIGHT TO ACHIEVE POSITIVE
ONE-ENGINE-INOPERATIVE CLIMB AT LIFTOFF
(FLAPS 0%).
Enter the graph at 5003 feet to 28°C, to determine
the
maximum
weight
at
which
the
accelerating
procedure should be attempted.
Maximum Accelerate-Go Weight
12,990 pounds
7-6.
ACCELERATE-STOP (FLAPS 0%).
Enter the accelerate-stop graph at 28°C, 5003 feet
pressure altitude, 12,000 pounds, and 10 knots head
wind component:
Accelerate-Stop Distance ................... 4520 feet
Takeoff Decision Speed .......................99 knots
7-7
TAKE-OFF DISTANCE (FLAPS 0%).
Enter the graph at 28°C, 5003 feet pressure altitude,
12,000 pounds, and 10 knots head wind component:
Ground Roll ........................................ 2860 feet
Total Distance over 50-foot
obstacle ............................................. 4400 feet
Take-off Speed:
At Rotation ...........................................99 knots
At 50 feet ...........................................116 knots
7-8.ACCELERATE-GO FLIGHT PATH EXAMPLE.
The following example assumes the aircraft is loaded
so that takeoff weight is 10,000 pounds.
a.
Accelerate-Go Distance Over 50-foot Obstacle
(Flaps 0%o).
Enter the graph at 28°C, 5003 feet
pressure altitude, 10,000 pounds, and 10 knots head wind
component:
Total Distance Over 50-foot Obstacle.......... 5710 feet
Speed at Rotation (VR) ..........................94 knots
Speed at 35 Feet Above Runway (Climb
Speed) ...............................................106 knots
b.
Takeoff Climb Gradient One Engine Inoperative
(Flaps 0%o).
Enter the graph at 28°C, 5003 feet
pressure altitude, and 10,000 pounds:
Climb Gradient .......................................... 5.5%
Climb Speed ......................................106 knots
A 5.5% climb gradient is 55 feet of vertical height per
1000 feet of horizontal distance.
NOTE
The graphs for take-off climb gradient
assume a zero-wind condition. Climbing
into a head wind will result in higher
angles of climb, and hence better
obstacle clearance capabilities.
Calculations of the horizontal distance to clear an
obstacle 100 feet above the runway surface: (fig.7-1)
Distance from 50 feet to 100 feet = 50 feet
(100 50) (1000 + 55) = 910 feet
Total Distance = 5710 +910 = 6620 feet
7-2
