747 EICAS, Heading Reference &
FMC Master Controls
by jerome meriweather

Down to Primary EICAS

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EICAS, Heading & FMC Controls FMC Master Selector HDG Reference Switch EIU Selector Event RCD Button BRT Knobs
747 Photo and/or Graphic Element



BRT Knobs
Event RCD Button
When Pushed records up to 5 maintenance events into non-volatile memory.
EIU Selector
Selects EIU providing information to EICAS.
HDG Reference Switch
Selects the heading reference for the PFDs, NDs, AFDS and FMCs.
FMC Master Selector
Selects the FMC source for FCCs, EECs and VHF navigation radio tuning information.