T-1A Fuel Systems Basics

Question 1

What situations would drive the boost pump to automatically turn on?

Answer 1

1. Low fuel pressure in motive flow line to engine (5 psi)
2. Low fuel volume in feed chamber (11 gal)
3. Engine start
4. Fuel crossfeed

Question 2

Crossfeed operations

Answer 2

-Select the tank to use
(pick on the fat kid)
-That boost pump & jet pump will be on
-Other side’s boost/jet will be off
-The crossfeed valve will open