DATE OF LEG
TIME LEG STARTED
COLLINS EDFCS ONLY
OR
COLLINS EDFCS FAULT MESSAGE NUMBER (NOT USED AT THIS TIME)
A22-11-00-122.fm
DFCS BITE PAGES - FAULT HISTORY SORTED BY FLIGHT LEG
January 1, 2004
22-11
- 31 -
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SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
DFCS BITE PAGES - FAULT HISTORY SORT BY FLIGHT DECK EFFECT
FAULT REVIEW Page
To see fault history sorted by flight deck effect, select LSK 3L. This shows the SELECT CHANNEL FOR FAULT HISTORY page. After you select the channel, you will see the FAULT HISTORY BY FLIGHT DECK EFFECT page.
FAULT HISTORY BY FLIGHT DECK EFFECT Page
The page shows these data:
-Flight deck effect
-Number of times the flight deck effect occurred.
To see more flight deck effects, use the NEXT PAGE function key on the MCDU.
To see more data about the flight deck effect, push the LSK next to the effect. If that flight deck effect did not occur within the last 40 flights, you see the page that shows ** NO FAULT **. If there are faults, you go to a FAULT FOR EACH LEG page.
The rest of the pages that show the faults are the same pages that the previous graphic shows.
Rockwell Collins Enhanced Digital Flight Control System Differences
The menu’s that access the fault history screens are the same on the Collins EDFCS and on the Honewell DFCS. Once you access a specifc fault history screen, the Collins differences are idenfied as follows.
For ARINC 429: Honeywell identiies invalid parameters. Collins identifies the LRU, and distinguishes bus ACTIVITY (NO ADIRU (IRU) DATA) from Sign Status Matrix (SSM) Fail ( ADIRU(IRU) DATA INV).
For FCC Internal Faults: Honeywell identifies specific internal component failure (e.g.: "P2-P1 DMA TST TIME), and Collins indicates "FCC INTERNAL FAIL."
Collins fault screens will also provide interface pin information for the suspect 429 data.
NOTE: On a Collins fault screen you will notice what appears to be a fault code (similar to a FIM code) below line 4R. Boeing calls this a "message number and at present, Boeing has not indicated how or if this numberis to be used for line maintenance purposes.
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