Fuel / Start Sequence Limits Flashcards
What is the Fuel Tank Lateral Imbalance limits in lbs for tanks 1 & 4 (T/O INFLT vs LDG) ?
1400 lbs / 4389 lbs
What is the Fuel Tank Lateral Imbalance limits in lbs for tanks 2 & 3 (T/O INFLT vs LDG)?
5025 lbs / None
MIN fuel required in tank 2 & 3 for adequate cooling of HYD fluid
1000 LBS
What is Fuel topping GOV RPM limits?
104.2% to 106.7%
Fuel Capacity of P3
9200 US gallons
Center point PX refuel point accepts fuel up to max rate
600 GPM
Fuel XFR pmp O/P pressure drops below what psi to illuminate PRESS LOW light
4 psi
BOOST light illuminates at
2 psi (pressure drops to below this level)
Fuel boost pump px (Normal)
15-30 psi
ENG Driven centrifugal boost pump increase press by
19psi
Fuel FILTER light illuminates
> = 7.5 psi differential px
What should bleed air pressure be during GND start sequence when RPM is 16%?
Bleed Air Pressure min 25 PSI
What to check during ground start sequence when rpm 35%?
Oil pressure on rise
What to check during ground start sequence when RPM 57-64%
Pull Starter button
What should be checked during GND start sequence when RPM is 65%?
EDC “PRESS LOW” light out
“PARALLEL” Light out
What should be checked during GND start sequence when RPM is LOW RPM?
Prop “OIL PROP PUMP 1” and “OIL PROP PUMP 2” lights out
Fuel “PRESS LOW” light out
What happens to speed sense control when RPM is 16%?
Opens FSOV.
Enables enrichment.
Energizes Ignition relay, which Energizes: 1. Igniters, 2. Paralleling Valve, & 3. Fuel Manifold Drain Valve electronically shut.
What happens to speed sense control when RPM is 65%
Deenergizes Ignition Relay
What happens to speed sense control when RPM is 94%?
TD from start limit to temp limit
What are the inputs to the Fuel Control Unit (FCU)?
Compressor Inlet Temparature
Compressor Inlet Pressure
Power Lever
Engine Speed
