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MCDU Part Numbers Display
The PART NUMBERS display gives information about the software part numbers and versions loaded in the CMU, and the hardware part number of the CMU. Part numbers will be displayed in the first four lines of the data field on the MCDU.
S/W Part No.- Line 1
Line 1 displays the operational software part number applicable to Southwest Airlines. This data base is customized and modifiable by Southwest Airlines Flight Operations.
Honeywell Generated Interface (HGI) - Line 2
Line 2 displays the Honeywell application software table part number, as well as the current version. The HGI database generates the Air Traffic Services (ATS) messages that the pilot can request through ACARS. Honeywell controls the generation of this database because of validation requirements. The database can be modified at operator request.
Airline Modified Interface (AMI) - Line 3
Line 3 displays AMI software part number as well as the current version. The AMI database contains data messages and display formats tailored for and by Southwest Airlines.
CMU Hardware Part Number - Line 4
Line 4 displays the hardware part number of the CMU installed on the aircraft.
NOTE:  To return to the MAINTENANCE MENU select <RETURN (LSK 6L).
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
LSK 1L

 

LSK 6L

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ACARS - BITE - PART NUMBERS

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737-700 MAINTENANCE TRAINING MANUAL

ACARS - BITE - FAULT LOG THIS PAGE INTENTIONALLY LEFT BLANK
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL

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ACARS - BITE - FAULT LOG MCDU FAULT LOG Display
The FAULT LOG display supplies access to the fault history of the CMU. This display is accessible on the ground and in flight. You can select fault history for the current leg of flight or faults that have occurred on previous legs using the LSK keys. Additional pages are provided if the fault history exceeds the line capacity of the first page.
NOTE:  To return to the Maintenance Menu select <RETURN (LSK 6L)>
CURRENT FAULTS
Selecting <CURRENT LEG (LSK 1L) will display fault history for the current leg of flight. The faults in the current leg are displayed in reverse chronological order from top to bottom on the page. Faults can continuing on as many pages as required to display faults in lines 1 thru 5 of each page.
The fault code is displayed in the header line, followed by the number of times the fault has occurred in the current leg. The first 23 characters of the fault description are displayed in the next data line below the fault code.
Specific fault information can be accessed by selecting the FAULT DATA page for the selected fault. Press the LSK next to the description of the fault you want to view.
NOTE:  To return to the Fault Log select <FAULT LOG (LSK 6L).
When there are no faults in the current flight leg, NO FAULTS will be displayed in the middle of the page.
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FAULT DATA
The FAULT DATA display supplies information about the fault code selected. Specific information regarding the fault is displayed in line 1 thru 5 of the data field on the MCDU.
Line 1L can display the following
-Hexadecimal code for the fault
-Optional data associated with the fault if available
-(Line 1R) Toggle status of the fault, either BAD or GOOD
Toggle status is typically used to annunciate intermittent faults. For instance, activity status is an example of a fault with toggle status. It is considered a fault if a monitored LRU does not provide input over a certain period of time. To ensure that when activity is detected after an activity failure fault was logged, another entry is made in the fault log using the same fault code and fault description, but the toggle status is changed to GOOD. Some faults do not have toggle status. When the fault does not have a toggle status, the field is left blank.
　
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