Figure 4-3 Computing Fuel

CHAPTER FOUR

T-6A NAVIGATION

Figure 4-3 Computing Fuel

As shown in the example in Figure 4-3, first compute fuel from start/taxi/takeoff and climb to the

beginning of the first low-level route. To accomplish this, the fuel and distance to climb and

descent are first computed. The climb and descent distances are then both subtracted from the

total measured distance to determine the cruise distance.

Start/Taxi/Takeoff and Climb.

Tthe initial total usable fuel is 1100 pounds. Subtract 50 pounds of fuel for start, taxi, and take-

off. The result is 1050 pounds.

1100 Initial Fuel

50 Start, Taxi, Takeoff

1050 Fuel Remaining After Takeoff

Figure 4-4 Initial Total Fuel

Referring to Figure 4-3, the initial enroute cruise altitude is 10,000 feet to low-level entry. A

climb to 10,000 feet burns approximately 41 pounds, which we round up to 45 pounds.

Subtracting 45 pounds, the level off fuel is 1005 pounds.

1050 (Fuel Remaining After Takeoff)

-45 (Climb Fuel)

1005 (EFR at End of Climb)

Enroute and Descent

The start point (Point A) for the first low-level, as depicted in Figure 4-3, is 83 NM from NPA.

From the climb chart, we know the aircraft covered 10 NM in the climb.

4-4

FUEL PLANNING, JET LOGS, DD 175