Electrical Buses Flashcards
What is on the MAIN Hot Battery Bus?
APU Fuel SOV
Spar Valves (all engines)
APU and Lower Cargo Fire extinguishers
Engine Fire extinguishers (all engines)
Fire switch unlock (all engines)
APU Hot Battery Bus
IRU L,C,R DC power
Left and right outflow valves
APU inlet door
APU controller (primar)
Main Battery Bus
APU Controller (alt)
Fuel Valves (all engines)
All Cross feed valves
Dome, storm, and interior lights
IDG disconnect
manual pressurization controller
trailing edge flap control
CA’s interphone
left radio tuning panel
Left VHF
APU Battery Bus
APU DC fuel pump
Engine Start air control
Cargo, FO and service interphones
APU and engine fire / overheat detection loops A and B
APU Fire warning horn
Main Standby bus
Left EIU, CDU, ILS, VOR, ADC, XPONDER, EFIS
STBY ignition for all engines
Primary EICAS, RMI, STBY instrument lights
Various flight control components
APU Standby Bus
Left PFD
Left ND
Left FMC
With No AC power what busses are powered (fuel engine flameout)
Main and APU hot battery Bus
Main and APU battery Bus
Main and APU Standby Bus
Captain transfer Bus
C EFIS/EICAS (EIU)
left HF
FO transfer bus
Autothrottle servo
lower Eicas Display
R ADC, EFIS control, EIU, FMC, CDU
Ground Service Bus
Main and APU battery Chargers
fuel pump for APU start
flight deck flood, navigation, service lights
misc service outlets and equipment
Ground Handling Bus
Lower cargo doors
lower cargo handling equipment
lower cargo lights
fueling system
AUX Hyd pump 4
Cold dark airplane, what busses are powered?
Main/APU Hot battery Bus
Battery switch on (standby switch Off) what busses are powered?
Main/APU Hot battery Bus
Main/APU battery Bus
Battery switch on (standby switch auto)
Main/APU Hot battery Bus
Main/APU battery Bus
Main / APU standby bus
AC power 1 and 2 available (on the ground)
Main/APU Hot battery Bus
Main/APU battery Bus
Main / APU standby bus
Captain/FO transfer bus
Ground service Bus
Ground handling bus
Everything
Main Busses
Tru’s
Navigation radios
Flight control computers
Flight deck lighting
pilot & window heating
Utility Buses
forward main fuel pump 2 and 3
forward override/jettison pump 2 and 3
center override/jettison pumo
galley equipment
APU TR
DC Bus Power
Cabin Pressure, fuel jettison, pack temp controllers
wing anti ice control
engine driven and hydraulic demand pump control
fuel transfer and jettison valve control
individual nacelle anti ice control
