Fuel System

Question 1

How much fuel does the aircraft hold, broken down into tanks?

Answer 1

3764 total
735 in each wing
1300 forward
790 aft
204 header

Question 2

How do the electric fuel pumps operate?

Answer 2

20 minutes each side - 10 second overlap

Question 3

How does the fuel heater work?

Answer 3

Two 600 watt fuel heaters help heat the fuel along with the engine fuel-oil exchanger.
One comes on at less then 10c and off at 13c for over 10 seconds
Two come on at 5c and off at 8c for over 10 seconds

Question 4

How accurate is the mass flow sensor?

Answer 4

+- 10lb an hour

Question 5

When would fuel stop jettisoning?

Answer 5

At 600lb fuel remaining

Question 6

What VIT is used to monitor fuel levels in each tank?

Answer 6

VIT 48

Question 7

What VIT gives you what Solenoid is commanded open or closed?

Answer 7

VIT 50

Question 8

When is the header low tank warning message?

Answer 8

184lb of fuel or less

Question 9

When will a red fuel leak warning display?

Answer 9

When either of the following occur:
1. Wing probe indicated 200lb or more below calculated wing tank level.
2. Forward or aft probe indicated 250lb or more below calculated fuel.