INSTRUMENTS FLIGHT PLANNING
Figure 6-2 Reverse Side of Jet Log (Based on T-34)
According to your preflight fuel planning, you have 545 lbs at your destination IAF-much more
than the 160 lbs required. If all goes according to plan, you have 385 lbs (545 160) spare fuel.
Note in your Fuel Plan (Item 9) that this number has already been calculated.
All of this leads to the final determinant: if, in your FUEL PLAN or EMERGENCY "BINGO"
TO ALTERNATE section you compute arrival at your alternate airfield with at least zero spare
fuel, (as opposed to a negative number) your flight is legal and completion of the mission, at the
time of its planning, is feasible.
Flights seldom proceed as planned and fuel figures always change. Therefore, it is of utmost
importance to accurately compute, while in flight, the EFR at your destination.
Remember from previous sections, that when analyzing fuel enroute you give an estimate of fuel
remaining at the destination IAF. From the example on the preceding pages, if you arrive at the
IAF with less than 160 lbs you would be unable to proceed to your alternate, execute an
approach and land with OPNAVINST 3710.7 minimum fuel.
If at any time during the flight, you estimate your fuel to be less than mission completion fuel,
you must take measures to alter the situation: land short of original destination, change route of
flight, climb, descend, etc.
6-4 MISSION COMPLETION FEASIBILITY