Fuel system

Question 1

when parking on a _____ slope the fuel system may vent overboard

Answer 1

1% or 3 degrees

Question 2

The fuel system auto balance system keeps the fuel within

Answer 2

20lbs of each other

Question 3

When a fuel imbalance of ___ or more is detected for more than ___ the transfer valve closes the motive flow line to the light tanks

Answer 3

20lbs, 30 sec

Question 4

If the fuel balance is not reduced to less than ___ within ____, the FUEL BAL light will illuminate and the auto balance system will shut off

Answer 4

30lbs, 2 min

Question 5

What are the six annunciators associated with the Fuel system

Answer 5

Red FUEL PX - less than 10psi in the motive flow/return supply line.
Ambetr L FUEL LO, R FUEL LO - optical sensors indicate fuel quantity below 110 pounds in the respective wing tanks
Amber FUEL BAL - fuel imbalance greater than 30lbs for more than 2 min or a fuel probe fails
Green M FUEL BAL - if the fuel balance system is set to manuel/reset position
Green Boost pump- Manuely by setting the switch to On or automatically when whenever the starter is activated, or when the PCL above idle by the low pressure switch

Question 6

How many fuel probes are there

Answer 6

7

Question 7

Where are the fuel probes located

Answer 7

445 +/-50 - outer
308 +/- 50 - inner
20 -collector tank

Question 8

What happens when a fuel probe fails

Answer 8

The FP fail will display in amber text in the lower center portion of the alternate engine data display and the amber FUEL BAL annunciator will come on

Question 9

Is automatic fuel balancing available with the FP FAIL displayed

Answer 9

No

Question 10

How long can the (flip flop valve) fuel pickup valve provide fuel regardless of orientation

Answer 10

15sec

Question 11

What feeds fuel to the low pressure engine driven pump

Answer 11

the primary jet pump or electric boost pump

Question 12

Where does the low pressure engine driven pump provide fuel to

Answer 12

the High driven pressure driven pump

Question 13

The High driven pressure pump provides fuel to the

Answer 13

FMU

Question 14

If both the boost pump and the low driven pump fail can engine operations continue

Answer 14

Yes for 10 hours, the high pressure fuel pump will suction feed sufficient fuel but will not allow an engine restart

Question 15

Major sections to the engine

Answer 15

Accessory compartment
Gas generation
Power turbine

Question 16

What is all in the accessory compartment

Answer 16

Accessory gearbox, oil tank, starter/generator, batter

Question 17

What’s all in the power turbine section

Answer 17

Power turbines, exhaust case, reduction gearbox, propeller shaft