Figure 4-11 Actual Fuel Remaining (AFR)

CHAPTER FOUR

T-6A NAVIGATION

411.

ACTUAL FUEL REMAINING (AFR) AND IN-FLIGHT FUEL ANALYSIS

Read the fuel quantity gauges to record actual fuel remaining in flight. Compare actual fuel

remaining to the mission completion fuel to evaluate mission feasibility and trends or

malfunctions in flight. If AFR equals or is above MCF, continue the mission as planned. If

below MCF but above BINGO (with no significant negative trend), expect to leave the low-level

route early. You could also climb higher or slow down to conserve fuel, but these options

prevent you from remaining within mission timing or mission altitude requirements for training

here at Pensacola. If at or below BINGO fuel, expect to use the BINGO profile direct NPA or to

the nearest suitable divert field.

Look at the fuel gauges in Figure 4-11. The figure shows 400 pounds of fuel remaining.

Compared to MCF, you are 55 pounds below MCF and still above BINGO fuel. You could

continue the mission, but under the condition that you would exit the route early. If your

previous fuel analysis was also 55 pounds or less below MCF, then you have either a no fuel

trend or a positive fuel trend.

Figure 4-11 Actual Fuel Remaining (AFR)

If, however, the previous fuel analysis indicated a negative or increasing negative trend, you

might have cause for concern. In such a situation, fuel is being consumed (or lost) in such a

manner, the BINGO data may be invalid and an immediate mission abort is the best option. In

summary, fuel analysis is as follows:

4-12

FUEL PLANNING, JET LOGS, DD 175