SYSTEMS

Question 1

NGS

Answer 1

converts bleed air to nitrogen enriched air.
Reduce flammability of tank.
Operates after TO to taxi for short time

Question 2

NGS auto shuts down?

Answer 2

Non normal:
AC ground
engine not running flight
Fire / smoke detected in cargo or main deck area
LEFT pack overhear
Centre tank refueling valve open.

Question 3

Fuel pumps cooled and lubricated?

Answer 3

by the fuel

Question 4

Centre vs main pump press?

Answer 4

centre higher

Question 5

Low press light flickering?

Answer 5

5min

Question 6

Main tank fuel pump press LOW?

Answer 6

engine can draw fuel from main tank via suction feed.

Question 7

Low fuel pump press threat?

Answer 7

AC climb, dissolved air released from fuel in tank due decrease air press. Air collect in suction feed line - restrict fuel flow.High ALT thrust deterioration or flameout. Dissolved air will deplete at cruise alt.depended on alt, fuel temp, type of fuel.

Question 8

Suction defueling?

Answer 8

use main tank bypass valve

Question 9

CFeed valve power?

Answer 9

DC from Battery bus

Question 10

SPAR Fuel shutoff valves location and power?

Answer 10

Engine mountain wing station
DC from HOT BAT BUS

Question 11

Engine fuel shutoff valve
MAX(engine high press shutoff valve)

Answer 11

fuel actuated
solenoid controlled
powered from BAT bus

Question 12

Centre tank fuel scavenge pump?

Answer 12

Main tank, nr 1 FWD Switch ON, the centre tank fuel scavenge jet pump operates auto to transfer any remaining CTR tank fuel to main tank Nr1. Transfer begin - main tank nr1 quantity 1/2.

Question 13

Max, fuel quantity accurace?

Answer 13

2.5 error