Trans GK Fuels

Question 1

What temperature range is the fuel system designed for?

Answer 1

Between -40C - 50C

Question 2

During normal operation, fuel feed to each engine is provided by:

Answer 2

The primary jet pump

Question 3

Motive flow for the primary jet pump is supplied by:

Answer 3

The engine-driven fuel pump through the motive flow valve

Question 4

The boost pump is used during:

Answer 4

Engine starting
Fuel crossfeed
Wing tank to feed tank fuel transfer
As a backup for the primary jet pump

Question 5

Does the boost pump energize automatically during engine start and automatically stop after the engine is started?

Answer 5

Yuh (on Gawd)

Question 6

If a fuel filter becomes clogged, what happens?

Answer 6

A filter pressure switch actuates and the filter is bypassed (L F FLTR BYPASS and/or R F FLTR BYPASS annunciator illuminates )

Question 7

When does the filter bypass valve open, supplying fuel to the engine? (Fuel is unfiltered)

Answer 7

When the pressure differential exceeds 2.3 psi

Question 8

In the automatic mode, the boost pump will operate when:

Answer 8

Fuel feed line pressure drops below 5 PSI
Fuel feed chamber volume falls below approximately 11 gallons
Engine starting is selected
Crossfeed is selected

Question 9

The fuel system has 4 electric pumps, what are they?

Answer 9

2 boost pumps
2 transfer pumps

Question 11

One electric boost pump is located where?

Answer 11

In each fuel feed chamber

Question 12

Transfer pumps are used to transfer fuel where?

Answer 12

2 transfer pumps are used to transfer fuel from the mid fuselage tanks into the wing tanks

Question 13

When does the fuel transfer pump automatically shut off (when in AUTO position)

Answer 13

When the fuel level within the tank reaches a level slightly above empty and the line pressure drops to 5.0 +/-0.5 PSI

Question 14

What do you do if the fuel transfer pump operation light remains illuminated with either L or R XFER PRESS LO annunciator illuminated, and the switch is in AUTO?

Answer 14

Pull the LH or RH TRANS PUMP C/B to avoid fuel transfer pump damage

Question 15

What is a jet pump?

Answer 15

A low pressure device that transfers energy from a high velocity, low mass, fluid stream to induce a low velocity, high mass fluid stream (motive flow)

Question 16

Transfer jet pumps are used to:

Answer 16

Maintain fuel quantity in each fuel feed chamber (one installed on the aft and forward side of the fuel feed chamber; 2 each wing)