PRIMUSr 1000 Integrated Avionics System
A28--1146--112--00
Electronic Flight Instrument System (EFIS)
4-96
D Copilot’s DC Fails -- If the copilot’s DC fails, the SG driving the
copilot’s display automatically reverts to the display source
selections given below:
- AHRS 2
- MADC 2
- NAV 2
- RAD ALT 2
- NO. 2 BEARING POINTER -- NAV 2
- NO. 1 BEARING POINTER -- OFF
- BARO -- Last selected setting
- FULL HSI
- MFD No. 2 menu inoperative.
D Both Pilot’s and Copilot’s DC Fail -- If both the pilot’s and the
copilot’s display controllers fail, the symbol generator driving the
EICAS displays automatically uses DAU 1 channel A and DAU 2
channel B. The pilot/copilot’s PFD and the MFD sources for this
condition are the same as described under the Pilot DC Fails and
Copilot DC Fails paragraphs.
Standby Navigation Display
Eitherradiomanagement unit (RMU) canbe selectedto displaycertain
navigation data in an HSI arc format. The RMU operation is described
in Honeywell Pub. No. A28--1146--050. This section details the use of
the RMU for the standby navigation display role.
The RMU PGE (page) button is used to select the standby navigation
display. Redundant sources of28 V dc power are suppliedto RMU No.
1 NAV, No. 1 AHRS, and both DAUs to ensure display and data
availability. The display shows the following information:
D Heading arc display
D VOR/ILS navigation course information
D DME
D f(VOR)andZ(automaticdirectionfinder(ADF))bearingpointers
D NAV1/ADF1 frequency display
D Marker beacon.
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