Figure 6-2 Reverse Side of Jet Log (Based on T-34)

CHAPTER SIX

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.

603.

IN-FLIGHT ANALYSIS

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