ELECTRICAL
Description
Aircraft Operations Manual
5.1
PAGE
21
ESS AVIONIC BUS
−
VOR/ILS/Marker 1 and VOR/ILS indicator.
−
ATC Transponder 1
(depending on national regulations).
UTILITY BUS
−
Passenger reading lights.
−
Lavatory water heater (if installed).
−
R Galley fan light and liquid heater.
−
Pilot foot warmer (if installed).
−
L Galley.
−
F/A seat heater (if installed).
−
Active Noise Control (if installed).
−
Tail compartment shutoff valve.
−
Cabin Attendant Call Buttons (if installed).
−
AC Power Inverter (if installed)
−
230 V AC Cabin Power Outlets (if installed)
EMERGENCY BUS
−
Audio system backup power.
−
Bus tie relay CONN function.
−
L and R engine fire detection.
−
L and R tailpipe hot detection.
−
Warning system backup power.
−
Emergency voltage indication.
−
28 to 5 VDC converter for instrument
emergency lighting.
EMERGENCY AVIONIC BUS
−
VHF COM 1.
−
Stby horizon.
L GEN BUS
−
Cabin recirculation fan.
−
Hydraulic pump pwr.
R GEN BUS
−
Cockpit recirculation fan.
Jun 01/20