T-45A UJPT, E2-C2, ADV, & IUT Eng-05
Fuel System
PROGRESS CHECK
Question 1 -- 1.4.7.2.1
How is fuel prevented from boiling at high
altitudes?
ANSWER: The fuel tanks are pressurized to 6.0 psi
above ambient.
Question 2 -- 1.4.7.3
What indicates the loss of boost pump pressure?
ANSWER: The FUEL PRESS caution light illuminates
on the WCP.
ASK STUDENT: Is this a positive indication that a
boost pump(s) has failed?
ANSWER: No. It could be fuel tank pressurization
loss.
Question 3 -- 1.4.7.3
What indicates that approximately 350 lb of fuel
remain?
ANSWER: The FUEL LOW caution light illuminates on
the WCP.
Sg 4, fr 1
IV. Aircraft interfaces 1.4.7.2
Lesson Organization
A.
Inputs
1.
Electrical system
a.
Indicators: 28 VDC essential services
bus power source
b.
Boost pump: 28 VDC essential
services bus power source (boost
pump(s) continue(s) operating for 30
seconds after generator shutdown)
(8-03) Original
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