T-45C TS, ADV & IUT ENG-07
Aircraft Fuel System
2.
Gravity filler cap
a.
Location: access panel top left side of
fuselage, aft of the cockpit
b.
Physical description: lift-and-turn-to-unlock filler
cap
II.
Operational characteristics 1.4.7.2.1
Sg 2, fr 2
Lesson Organization
A.
FUEL SYSTEM
1.
Normal operations
* Major component
identification
* Operational
a.
Function
characteristics
* Controls, switches, and
indicators
(1) Suppresses tendency of fuel to boil at high
* Aircraft interfaces
altitudes
Sg 2, fr 3 (3 Overlays)
(2) Aids in transfer of fuel
Aircraft Fuel System
Block Diagram
(3) Keeps collector tank full
b.
Operational description
(1) Fed by bleed air from high pressure fifth
stage of the high pressure compressor
(2) Filtered and regulated to 6 psi above
ambient by tank pressure control valve
(3) Pressure air supply is connected to fuel
transfer line at pylon fuel/air valve to
pressurize fuel tanks
NOTE: The pylon fuel/air valves would also
provide pressure for fuel transfer of external
fuel into fuselage bag in the event of future
installation of drop tanks.
(4) Dual datum relief valve prevents
overpressure damage to fuel tanks and
structure
Original (9-98)
Page 7-9
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