*
CMCF source field.
Fault Summary Field Title
The fault summary field title shows above the fault summary field on the left side. The fault summary title shows this data:
*
ATA ZZZZZ; shown when the existing faults summary display shows maintenance message summary groups for a single ATA system. (ZZZZZ is the ATA system that has faults)
*
Faults Active or Latched -show when the existing faults summary display shows FDE and non-FDE summary groups.
Number of Items
The number of items shows above the fault summary field on the right side. The number in the parentheses shows the total number of:
*
Maintenance message summary groups when the fault summary field shows maintenance message summary groups for a single ATA chapter
*
FDE summary groups plus one for the non-FDE summary group when the fault summary field shows FDE and non-FDE summary groups.
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Fault Summary Field
The fault summary field has these groups:
*
Maintenance message summary groups for a single ATA chapter
*
FDE summary groups
*
Non-FDE summary group.
The fault summary field border highlights when the cursor is in the area of the fault summary field and there is one or more summary groups within the field.
FDE Summary Group
A FDE summary group shows this data:
*
FDE EICAS message and level
*
FDE activity
*
Fault code for the FDE
*
Time and date the FDE occurred
*
One or more maintenance message summary groups.
A non-FDE summary group shows a description field followed by one or more maintenance message summary groups. The description field shows the maintenance messages which have not been correlated.
Select the cursor control device button while the cursor is in the area of the fault summary field to highlight the text of a maintenance message summary group or the text of a FDE summary group header. Select the MAINTENANCE MESSAGE DATA button to show more data for the highlighted maintenance message summary group.
Maintenance Message Summary Group
A maintenance message summary group shows this data:
*
Maintenance message number
*
Maintenance message activity
*
Symptom field.
FDE and Maintenance Message Activity
The activity of an FDE shows as one of these:
*
Active
*
Latched.
An active FDE is an FDE that currently shows in the flight deck.
A latched FDE can only be a status message or a scheduled maintenance task. Scheduled maintenance tasks are discussed in another section.
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A failure that caused a status message may impact dispatch and may be intermittent or detectable only under certain conditions. The PDS holds a status message to make sure you can see it on the ground. You must do something to clear a latched FDE.
The activity of a maintenance message also shows as one of these:
*
Active
*
Latched
*
Not Active.
A maintenance message is active if a system can continuously monitor for a fault condition and the fault exists.
A maintenance message is latched for one of these reasons:
*
If a system detected a fault and is no longer using the related equipment as part of its operational function
*
To ensure correlation with an FDE
*
If a system can not always detect if the fault exists.
You must do something to clear a latched maintenance message.
A maintenance message is not active if a system can continuously monitor for a fault condition, and the fault does not exist.
Buttons
Select MAINTENANCE MESSAGE DATA to show the single maintenance message display for the highlighted maintenance message.
Select SELECT BY ATA to show the existing faults dialog box. If the fault summary field shows maintenance message summary groups for a single ATA chapter, then the button shows SORT BY FDE.
Select SORT BY FDE to show all the existing FDE and non-FDE summary groups. If the fault summary field shows FDE and non-FDE summary groups, then the button shows SELECT BY ATA.
Select SELECT NEW ATA to show the existing faults dialog box. The SELECT NEW ATA button shows only if the fault summary field shows maintenance message summary groups for a single ATA chapter.
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