I A P 2 0 2 3 . 0 0 1 - A F M / I R I S T E X A N I I P A G E | 37
FOR SIMULATION USE ONLY – NOT A TRAINING AID
FUEL SUPPLY SYSTEM
The fuel system provides approximately 1100 pounds of usable fuel through the
single-point refuelling system. Approximately 100 pounds additional fuel is
available if manually filled to the base of the filler neck in each wing tank.
Single-point pressure refuelling is the primary refuelling method. Three integral
tanks built into a single-piece wing provide fuel storage with usable fuel
information listed in the table below.
Fuel Location Total Gallons Weight – 6.7 lb/gal
(JP-5 / JP-8 / JET A / JET A1)
Left Wing 79 527
Right Wing 79 527
Collector Tank 7 47
TOTAL 164 1100
The fuel system incorporates an auto balance system to keep the fuel level in the
wing tanks within 20 pounds of each other. When a fuel imbalance of 20 pounds or
more is detected for more than 30 seconds, the transfer valve will close the motive
flow line to the light tank.
This action stops fuel in the light tank from being transferred to the collector tank
while fuel continues to be transferred from the heavy tank to the collector tank. If
the fuel imbalance is not reduced to less than 30 pounds within 2 minutes, the FUEL
BAL caution will illuminate and the auto balance system will shut off.
The FUEL BAL caution will remain illuminated until the system is reset.