- VOR
- DME
- ADIRS M
-MMR (ILS & GPS) -DFCS -FQIS -CLOCK -FMC -CDS DEU.
If the two FMCs do not agree on the status of an LRU, a highlight shows around the status field for that lRU. In the example shown on the graphic, FMC L and FMC R do not agree on the status of the right VOR.
Dashed lines in the status field show the LRU does not exist or the FMC selected as the BITE source does not interface with the LRU. In the example shown on the graphic, the DFCS FCC A is the master FCC and it is the FCC that reports DFCS status to FMC 1 and FMC 2.
737-700 MAINTENANCE TRAINING MANUAL
Dashed lines in the status field show the LRU does not exist or the FMC does not interface with the LRU. In the example shown on the graphic, the master FCC is the FCC that reports DFCS status to FMC 1.
The elapsed time indication (ETI) shows the current value in hours for the selected FMC. In the example shown on the graphic, the ETI for the left FMC is shown.
To see the engineering data for the current faults, you can set the engineering code 100 in the scratch pad and select LSK 6R. This will show the sensor data pages.
Sensor Data Pages
This page shows engineering data for sensors which have a FAIL status on a SENSOR STATUS page. The faults show in chronological order.
This engineering information shows for each fault:
-System code
- Label code
- Fault state
- Failure time
- Monitor code.
The system code shows the failed LRU or sub-system.
The label code shows the ARINC word for the fault.
Fault state shows if the fault was steady (S) or intermittent (I). All faults are initially recorded as a steady fault. If the fault later goes away, the indication changes to intermittent.
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FMCS BITE PAGES -SENSORS
Failure time shows the GMT of the first occurrence of the fault. This time does not change if the fault goes away and then comes back later.
The monitor code shows the specific type of ARINC 429 failure.
These are the monitor codes for ARINC 429 failures:
-Rate (receive rate failure)
-Parity (parity failure)
-SSM (sign/status matrix failure)
-Reason (reasonableness failure).
The clear key only clears the engineering data for the FMC selected as the BITE source. It does not clear the data for both FMCs.
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737-700 MAINTENANCE TRAINING MANUAL
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