*
If a system detects a fault and no longer uses 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.
Maintenance Message Summary Group
Each maintenance message summary group includes:
*
Maintenance message symptom

*
Maintenance message number

*
Maintenance message activity.

One or more maintenance messages may be correlated to each FDE.
Button
Select MAINTENANCE MESSAGE DATA to show the single maintenance message display for the selected maintenance message.

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CMCS -GROUND TESTS SELECTION DIALOG BOX

General

The GROUND TESTS selection supplies access to airplane systems with ground tests. In this ground test selection dialog box, you select this data:
*
ATA system

*
Type of test

*
LRU in that system.

Many ATA systems and LRU have unique requirements that cause additional dialog boxes to show before the test actually starts. The types of dialog boxes include these:
*
Precondition dialog boxes

*
Inhibit dialog boxes

*
Interference dialog boxes

*
Interactive dialog boxes

*
Menu abort dialog boxes.

When all requirements are met, the ground tests display shows the status and instructions for the test.
Buttons on the ground tests display and the dialog boxes supply:
*
Specific instructions

*
Help

*
Report capability

*
Access to the single maintenance message page.

The ground test selection dialog box shows this data:
*
Dialog box title

*
List box titles

*
ATA system list box

*
Test type exclusive selections

*
Test list box

*
Buttons.

ATA System List Box
The ATA System list box lists the airplane systems in ATA order. Select an ATA system first. This highlights the selection. This selection causes the test types for that ATA to become available. Those test types that are not available show dim or gray.
Test Type Exclusive Selections
These are the test types that are exclusive selections:
*
SYSTEM TEST

*
OPERATIONAL TEST

*
LRU REPLACEMENT TEST.

A system test contains all adjustment specifications and tolerances to maintain systems or units at maximum efficiency. It is self-contained and may duplicate other tests.
An operational test determines only that a system or unit is operational. These tests require no special test equipment.

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An LRU replacement test determines only that the interfaces to the LRU are operational.
The selection of a test type causes the test list box to show.
Test List Box

The title of the test list box matches the test type. The test list box shows all LRUs in the ATA that have the appropriate test available. The selection of an LRU in the test list box causes that LRU to highlight.
The selection of the LRU also makes the CONTINUE command available.
Buttons

Select CONTINUE to show the precondition dialog box on top of the ground test selection dialog box for the selected test.
Select HELP to show the help dialog box for the ground tests selection dialog box. Help text for the dialog box must be in the CMCF AMI for HELP to show.
Select GO BACK to remove the ground test selection dialog box and to show the previous display.
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