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:
FUEL PLANNING, JET LOGS, DD 175