Fuel Systems Atlas

Question 1

What calculates individual fuel tank quantity for indication?

Answer 1

Indications are calculated by the fuel quantity processor. There is a separate calculation for the total fuel quantity indication which is also displayed on the FMC

Question 2

What does players are on the fuel quantity indicator panel?

Answer 2

L, C and R tank quantities
Fuel temp
Totaliser

Question 3

Fuel for the APU is supplied by which tank?

Answer 3

Left main tank

Question 4

Fuel from the wingtip surge tank is drained into which tank?

Answer 4

Centre tank

Question 5

What do boxes on the PERF INIT page indicate on the FUEL QUANTITY line?

Answer 5

The FMC’s are not receiving Fuel quantity data

Question 6

Which pump is supplying fuel to the APU with the APU generator power in the aeroplane?

Answer 6

Left Forward boost pump

Question 7

With the engines running, when will the centre pump pressure lights illuminate?

Answer 7

When pump pressure is low or no usable fuel in the centre tank with the centre pumps on

Question 8

When will the FUEL CONFIG light illuminate?

Answer 8

When fuel is low in either main tank – below 2220lbs

When main tanks differ by 2000lbs – plus or minus 500lbs

With centre pump switches off and 1200lbs or more in the centre tank

Question 9

When the fuel control switch is moved from cut-off to run which fuel valves open?

Answer 9

Spar valve and engine valve

Question 10

Is it normal for the LOW PRESSURE light to be extinguished in the left FWD fuel pump during pre-flight?

Answer 10

Yes, but only when the APU is operating

Question 11

Can the left forward fuel pump be switched off if it is supplying fuel to the APU on the ground with the APU running?

Answer 11

No, the pump cannot be turned off

Question 12

How can you tell if the fuel pump switch is off?

Answer 12

The bar and On and will be out of view

Question 13

What is the position of the cross feed valve with the bar out of view?

Answer 13

Switch is off and valve is closed

Question 14

What is the status of a main tank fuel pump with the bar and ON in view, but with a LOW PRESSURE light on?

Answer 14

Turned on – output pressure is low

Question 15

When will the DC fuel boost pump start automatically?

Answer 15

When the APU is started with battery power only

Question 16

Is it a normal indication for the low pressure light to extinguish, prior to APU start with no external power?

Answer 16

Yes, the DC pump will start automatically when the APU start selector is moved to the START position

Question 17

What is the position of the cross feed switch and valve, with the bar visible, and the VALVE light extinguished?

Answer 17

Switch is on
Valve is open

Question 18

What is different about the centre fuel tank and system on the 767 passenger configured aircraft?

Answer 18

The 767–300 P is equipped with nitrogen generation system (NGS), and nitrogen enriched air distribution system (NEADS), and a modified centre fuel tank vent system, which requires no crew action to operate

Question 19

From what fuel tanks is Fuel able to be jettisoned?

Answer 19

Centre fuel tank only

Question 20

What is the approximate rate of jettison?

Answer 20

2600 LBS per minute

Question 21

In-flight fuel tank temperature must be at least?

Answer 21

3°C above the fuel freezing point for the fuel being used

Question 22

Where is the fuel temperature indication found?

Answer 22

Overhead fuel quantity indicator panel

Question 23

Where is the indicated fuel temperature taken from?

Answer 23

The left main tank