*
EFIS CP (2)
*
DSP (2)
*
CDU (3).
If the flight crew does not do any work over a period of time, the FMCF makes these alerts occur in cruise and descent:
*
Warning
*
Caution
*
Advisory.
Output Overview
The active FMCF sends digital data to these components on the flight controls ARINC 629 buses:
*
ADIRU
*
SAARU.
The active FMCF sends digital data to these components on the system ARINC 629 buses:
*
AFDS (3)
*
ELMS (3)
*
AMU
*
ASG (2).
The active FMCF sends digital data to the other AIMS cabinet on the ICB ARINC 629 buses.
The active FMCF sends digital data to these components on the ARINC 429 buses:
BEJ 008-999
* Passenger inflight information computer (PIIC)
BEJ ALL
* GPWC.
Output Details
The FMCFs send data to these interfaces:
* Flight controls ARINC 629 buses
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*
Systems ARINC 629 buses
*
AIMS intercabinet ARINC 629 bus 2
*
ARINC 429 buses.
SAARU/ADIRU Outputs -Flight Controls ARINC 629 Bus (3)
The active FMCF sends CDU heading requests to the SAARU when the SAARU is the active navigation source.
The active FMCF sends CDU LAT and LON entries to the ADIRU for initialization.
AFDS Outputs -Systems ARINC 629 Bus (L, R, & C1)
The active FMCF sends the AFDS lateral and vertical steering guidance commands after the FMCFs receive an arm/ operational mode discrete from the AFDS.
ELMS Outputs -Systems ARINC 629 Bus (L & R)
The active FMCF sends zero fuel weight to the ELMS.
AMU Outputs -Systems ARINC 629 Bus (L)
The FMCF sends a VOR/DME or ILS/DME pair discrete to the AMU. This pair discrete lets you hear the DME audio identifier with the co-located VOR or ILS audio identifier. Selections on the EFIS control panel and the audio control panel defines the audio pair.
EFFECTIVITY
BEJ ALL
ASG Outputs -Systems ARINC 629 Bus (L & R)
The active FMCF sends this data to the ASG:
*
Airframe configuration
*
Engine configuration
*
Wing configuration.
FMCF Outputs -AIMS Intercabinet ARINC 629 Bus 2
The active FMCF sends resync data, such as flight plan and map data, to the other FMCF. This happens when a comparison check of the data between the two FMCFs fails.
BEJ 008-999
Passenger Inflight Information Computer (PIIC) Outputs -ARINC 429 Bus
The active FMCF sends this data to the PIIC on a low speed 429 data bus:
* Distance and time to waypoint
* Distance and time to destination. BEJ ALL GPWC Outputs -ARINC 429 Bus
The active FMCF sends this data to the GPWC on a low speed ARINC 429 data bus:
34-61-00
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FMCS -FMCF INTERFACES -1
*
Air data and inertial data
*
Magnetic track angle
*
Position (latitude and longitude).
EFFECTIVITY BEJ ALL 34-61-00
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General
The FMCFs receive mode and status data from the mode control panel (MCP).
The FMCFs receive inputs from these navigation radios:
*
MMR
*
VOR
*
DME
*
ADF.
The navigation radio inputs go to the input/output modules (IOMs) in the left and right AIMS cabinets.
The FMCFs use DME distance, ILS deviation and VOR bearing for position update.
MCP Inputs -ARINC 429 Bus
The MCP sends this data to the FMCFs on two 429 buses:
*
Altitude and altitude intervention
*
Speed and speed intervention
*
Mach and mach intervention
*
LNAV and VNAV mode requests.
Navigation Radio Inputs -ARINC 429 Buses
The multi-mode receivers (MMRs) send runway heading and ILS deviation data to the FMCF navigation partition. The FMCF uses this data to calculate a position. The MMRs also send frequency data to the FMCF navigation partition. The FMCF uses this data to verify valid ILS tuning.
The VOR receivers send bearing, frequency, and course data.
The DME interrogators send distance and frequency data.
The ADF receivers send bearing and frequency data.
The navigation radios send the tuned frequencies back to the FMCFs. The FMCFs use these frequencies as a wrap around tests. The FMCFs use status data to blank or show dashes instead of the normal display.
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