Fuel / Start Sequence Limits

Question 1

What is the Fuel Tank Lateral Imbalance limits in lbs for tanks 1 & 4 (T/O INFLT vs LDG) ?

Answer 1

1400 lbs / 4389 lbs

Question 2

What is the Fuel Tank Lateral Imbalance limits in lbs for tanks 2 & 3 (T/O INFLT vs LDG)?

Answer 2

5025 lbs / None

Question 3

MIN fuel required in tank 2 & 3 for adequate cooling of HYD fluid

Answer 3

1000 LBS

Question 4

What is Fuel topping GOV RPM limits?

Answer 4

104.2% to 106.7%

Question 5

Fuel Capacity of P3

Answer 5

9200 US gallons

Question 6

Center point PX refuel point accepts fuel up to max rate

Answer 6

600 GPM

Question 7

Fuel XFR pmp O/P pressure drops below what psi to illuminate PRESS LOW light

Answer 7

4 psi

Question 8

BOOST light illuminates at

Answer 8

2 psi (pressure drops to below this level)

Question 9

Fuel boost pump px (Normal)

Answer 9

15-30 psi

Question 10

ENG Driven centrifugal boost pump increase press by

Answer 10

19psi

Question 11

Fuel FILTER light illuminates

Answer 11

> = 7.5 psi differential px

Question 12

What should bleed air pressure be during GND start sequence when RPM is 16%?

Answer 12

Bleed Air Pressure min 25 PSI

Question 13

What to check during ground start sequence when rpm 35%?

Answer 13

Oil pressure on rise

Question 14

What to check during ground start sequence when RPM 57-64%

Answer 14

Pull Starter button

Question 15

What should be checked during GND start sequence when RPM is 65%?

Answer 15

EDC “PRESS LOW” light out
“PARALLEL” Light out

Question 16

What should be checked during GND start sequence when RPM is LOW RPM?

Answer 16

Prop “OIL PROP PUMP 1” and “OIL PROP PUMP 2” lights out
Fuel “PRESS LOW” light out

Question 17

What happens to speed sense control when RPM is 16%?

Answer 17

Opens FSOV.
Enables enrichment.
Energizes Ignition relay, which Energizes: 1. Igniters, 2. Paralleling Valve, & 3. Fuel Manifold Drain Valve electronically shut.

Question 18

What happens to speed sense control when RPM is 65%

Answer 18

Deenergizes Ignition Relay

Question 19

What happens to speed sense control when RPM is 94%?

Answer 19

TD from start limit to temp limit

Question 20

What are the inputs to the Fuel Control Unit (FCU)?

Answer 20

Compressor Inlet Temparature
Compressor Inlet Pressure
Power Lever
Engine Speed