On the ground, with either APU or external power available.
Only when the APU is running while on the ground
Either on the ground or in flight, with APU power available.
On the ground, with the ground service switch selected.
Crossfeed valves are normally open, providing fuel feed from tank to engine.
Although there are two valves, only open crosfeed valve is required for successful crossfeed operatrion.
There is only one crossfeed valve even though there are two switches to control it.
Fuel crossfeed can only be accomplished in the air.
EICAS message REFILL HYD RES
Hydraulic quantity displayed less than .75 on the status display
A white RF next to the hydraulic quantity on the status display
Hydraulic quantity displayed less than .75 the CDU.
Twelve or more full brake applications
Several braking applications or parking brake applications
Fully charged,3000 PSI available
Greater than 1475 PSI available
Pack Control Selectors………………MAN
Pack Control Selectors………………AUTO
Recirculation Fans Switches…………ON
Recruitment Fans Switches…………OFF
Approximately 1 minute
None, normal bleed air operation is allowed during de-icing procedures.
Main tank fuel differs more than 1000 pounds (500 kg).
Main tank fuel offers by more than 200 pounds (100 kg) and the crossfeed valve is open
Fuel difference between any tank is greater than 1000 pounds (500kg)
Main tank fuel differs more than 1000 pounds (500 kg) or the main tank fuel differs more than 200 pounds (100kg) and a crossfeed valve is open.
None. The airplane automatically compensates
Use reduced thrust combined with a rolling takeoff
Use maximum take-off thrust
Use 1 additional unit of nose down trim
Only the airplane gross weight
CG and runway length
CG, gross weight, and take-off thrust
CG and takeoff thrust
Oil quantity less than 19 quarts (15 liters)
EICAS message OIL QUANTITY LOW
A magenta LO indication on the Status page
A white LO indication on the secondary engine display
Fuel pump switches (low tank)……Off
Crossfeed switches (either)………On
Crossfeed switches (either)………..Off
Fuel pump switches (low tank)…….On
The predicate fuel at destination is less than the FMC pilot entered reserves.
The fuel quantity is low in either main tank.
There is a fuel imbalance between the main tanks.
The totalizer fuel quantity and the FMC calculated disagree by 9000 pounds (4080 kilograms) for more than 5 minutes.
Each main tank contains 62,300 pounds and the center tank contains 83,100 pounds.
Each main tank contains 83,100 pounds and the center tank contains 62,300 pounds.
Each main tank contains 64,100 pounds and the center tank contains 174,900 pounds.
Each main tank contains 69,000 pounds and the center tank contains 182,000 pounds.
Each main tank contains 28,300 kilograms and the center tank contains 37,700 kilograms.
Each main tank contains 37,700 kilograms and the center tank contains 28,300 kilograms.
Each main tank contains 29,100 kilograms and the center tank contains 79,300 kilograms.
Each main tank contains 31,300 kilograms and the center tank contains 145,500 kilograms.
When the APU has increased EGT
When the APU has increased oil temperature or reduced oil pressure
When APU operation has exceeded a limit
When the APU has automatically shut down for exceeding a limit