AIRPLANE
OPERATIONS
MANUAL
ELECTRICAL
REVISION 36
2-05-05
Page
11
Code
01
AOM-145/1114
AVIONICS MASTER
The avionics master system allows manual disconnection of some
navigation and communication equipment from the load buses. This
prevents undesirable voltage transients during APU starting on the
ground.
The avionics master system consists of six buses: Avionics Switched
DC Buses 1A, 1B, 2A, 2B and Avionics Switched Essential DC Buses
1 and 2. These buses are supplied by their associated DC buses. Two
Avionics Master Buttons, located on the overhead panel, control
switching the buses.
AVIONICS MASTER SCHEMATIC
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