OPERATIONS MANUAL

Flight Instruments
Instrument Source Selection: (continued)
Captain’s panel
Flight director source selector
The selected FCC controls the
movement of the flight director
on the respective pilot’s PFD.
First officer’s panel
Navigation source selector
The selected FMC provides data
to the respective pilot’s PFD and
ND. The selected CDU provides
standby navigation data to the
respective pilot’s ND.
EIU selector
The selected EIU provides the
interface between the respective
pilot’s IDUs and the selected
instrument sources (FCC, IRS,
ADC, among others).
AUTO
For captain:
Selects EIU L if it is operative,
else EIU C if that is operative,
else EIU R.
For first officer:
Selects EIU R if it is operative,
else EIU C if that is operative,
else EIU L.
Captain’s ADC source selector
Selected ADC provides air data to captain’s
PFD and IRU L. Air data selection for
IRU C is controlled by stepper relay logic
(pilot selections exclude each other).
AUTO Selects ADC L if it is operative,
else ADC C if that is operative,
else ADC R.
First officer’s ADC source selector
Selected ADC provides air data to first
officer’s PFD and IRU R. Air data selection
for IRU C is controlled by stepper relay
logic (pilot selections exclude each other).
AUTO Selects ADC R if it is operative,
else ADC C if that is operative,
else ADC L.
ADC C is optionally installed.
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