Fuel System

Question 1

Fuel tank construction and how many chambers

Answer 1

Aluminium, 3 interconnected chambers

Question 2

Which chamber does the fuel cap feed into

Answer 2

Outer chamber

Question 3

Fuel is sucked from the tanks towards the engines by what type of pump

Answer 3

Low pressure pump

Question 4

How is the fuel tank pressure matched to ambient pressure outside the wing

Answer 4

A check valve allows airflow in, and a pressure release valve releases air back outside if the internal pressure reaches a predetermined amount higher than atmospheric pressure

Question 5

How is fuel quantity measured

Answer 5

2 capacitance type fuel sensors in each tank

Question 6

When will L/R FUEL TEMP appear

Answer 6

When sensor in lower chambers of fuel tanks detects fuel temperature exceeding 75 deg C

Question 7

When will L/R FUEL LOW appear

Answer 7

When sensor on inner chamber detects 3-4 USG remaining

Question 8

By what method is low fuel detected

Answer 8

Low level switch on inner chamber of each tank

Question 9

Number and location of fuel drains

Answer 9

4 total, 2 on each wing, 1 under engine nacelle and 1 close to nacelle on underside of wing