Fuel

Question 1

Main tank fuel LOW PRESSURE Amber light

Answer 1

fuel pump output pressure low, or
pump switch is OFF

2 low pres lights illuminate master caution and fuel annunciator lights

1 low pres light illuminates master caution and fuel annunciator on recall

Question 2

Fuel crossfeed VALVE OPEN Blue light

Answer 2

bright: valve in transit, or valve position and crossfeed selector disagree

dim: valve is open

extinguished: valve is closed

Question 3

ENGINE VALVE CLOSED and SPAR VALVE CLOSED Blue lights

Answer 3

bright: valves in transit, or valve position and engine start lever or engine fire warning switch in disagreement

dim: valves closed

extinguished: valves open

Question 4

Fuel FILTER BYPASS Amber light

Answer 4

impending fuel filter bypass due to contaminated filter

Question 5

Fuel quantity LOW Amber alert

Answer 5

“LOW” displayed under fuel quantity with less than 2000 lbs in related main tank

Question 6

Fuel quantity CONFIG Amber alert

Answer 6

with either engine running, and
center tank over 1600 lbs, and
both center fuel tank pumps produce low or no pressure

Question 7

Fuel quantity IMBAL Amber alert

Answer 7

displays when main tanks differ by more than 1000 lbs
displays on the ground or in the air
inhibited by low fuel indication
displays until imbalance is reduced to 200 lbs

Question 8

2 ways to close spar and engine fuel shutoff valves

Answer 8

engine start lever to cutoff

pull engine fire warning switch

Question 9

How is fuel supplied to engines

Answer 9

center tank pumps produce higher pressure than main tank pumps

is main tank pump pressure is low, associated engine can draw fuel through suction feed bypassing the pumps