Anounciator Pannel

Question 1

Red FUEL PX

Answer 1

Indicates less than 10 PSI of fuel pressure in the motive flow/return flow supply line

Question 2

Green BOOST PUMP

Answer 2

Boost pump on when:
Boost pump switch on
Start is activates regardless of px

Question 3

Amber L FUEL LO/ R FUEL LO

Answer 3

Optical sensor activated when fuel quantity is below 110 lbs in the respective tank.

Independent from fuel flow and quantity sensors.

Question 4

Amber FUEL BAL

Answer 4

Fuel imbalance exceeds 30 lbs for 2 mins
OR
A fuel prob fails

Reset the auto balancer by cycling FUEL BAL switch and this restarts 2 min timer.

Question 5

Green M FUEL BAL

Answer 5

When FUEL BAL switch is in manual mode

Question 6

Amber FP FUEL on AEDD

Answer 6

Fuel prob failure: do not attempt manual balance

Question 7

Amber HYDR FL LO

Answer 7

Reservoir level has dropped below ~ 1 quart

Question 8

Amber EHYD PX LO

Answer 8

When emergency pressure drops below 2400+/-150 psi

Question 9

Red OBOGS FAIL

Answer 9

Either
Low bleed air pressure upstream of concentrator
Or
Internal failure detected by OBOGS BIT on start or by initiating test

Question 10

Red OIL PX

Answer 10

When oil pressure drops below
- 40 psi above idle
- 15 psi at idle