Precluding work units

This page allows you to preclude work units. Tell me more.

Select the “Preclude Work Units" link in the "Create Maintenance Program" page or "Maintain Preclude Work Units” link in the “Edit Maintenance Program” page.

The “Maintain Preclude Work Units” page appears.

The system displays the following fields in the “Work Unit Details” group box:

Maintenance Program #	The number identifying the aircraft maintenance program in which work units are to be precluded.
Program Desc.	The textual description of the aircraft maintenance program. Zoom facility available.
Revision #	The revision number of the maintenance program.
Status	The status of the maintenance program.

Enter the following field:

Work Unit #

Use the drop-down list box to specify the work unit number of a higher maintenance level, in the maintenance program. The system lists all the active work units that are defined for the maintenance program.

By default, the system displays the work unit selected in the previous page.

Click the “Get Details” pushbutton provided alongside, to retrieve the work unit details.

Note: The work unit selected in the “Work Unit Details” group box should not be changed after clicking the “Get Details” pushbutton.

The system displays the following fields on clicking the “Get Details” pushbutton.

Work Unit Type	The type of the work unit, which could be “Task”, “Standard Procedure”, “Aircraft Work Package” or “Component Work Package”.
Schedule #	The number identifying the schedule defined for the work unit in the maintenance program.
Seq #	The number identifying the sequence in which the work unit is executed.
Execution Type	The execution type of the work unit, which could be “Major” or “Minor”.
Work Center #	The code identifying the work center in which the work unit is executed.

Enter the following fields in the “Search Criteria” group box:

Work Unit #	The number identifying the work unit to be precluded (Alphanumeric, 30). You can enter the work unit number in full or specify it partially using the “*” character. The system retrieves all the work units that are similar to the value specified here. Leave this field blank to retrieve all the work units irrespective of the work unit number.
Work Unit Type	Use the drop-down list box to specify the type of the work unit. The system lists the options, “Task”, “Standard Procedure”, “Aircraft Work Package” and “Component Work Package”. The system retrieves all the work units of the type specified here. Leave this field blank to retrieve all the work units irrespective of the type.
Work Unit Desc	The textual description of the work unit (Alphanumeric, 150) You can enter the work unit description in full or specify it partially using the “*” character. The system retrieves all the work units with description similar to the description entered here. Leave this field blank to search for the work units, irrespective of the description. Zoom facility available
Schedule #	The number identifying the schedule defined for the work unit in the maintenance program (Integer). Ensure that the schedule number entered here is different from the schedule number specified in the “Work Unit Details” group box.

Click the “Search” pushbutton, to search for the work units.

The system displays the following in the “Search Results” multiline:

Note: The system retrieves all the work units of schedule status “Fresh” or “Active”.

Seq #	The number identifying the sequence in which the work unit is executed.
Schedule #	The number identifying the schedule defined for the work unit in the maintenance program.
Work Unit #	The number identifying the work unit to be precluded.
Work Unit Description	The textual description of the work unit.
Execution Type	The execution type of the work unit, which could be “Major” or “Minor”.
Work Center #	The number identifying the work center in which the work unit is executed.
Work Unit Type	The type of the work unit, which could be “Task”, “Standard Procedure” or “Work Package”
Work Center	The work center in which the work unit is executed.
Job Type	The type of the maintenance job that needs to be performed on the work unit. The system displays “Aircraft” or “Onwing”.
Maintenance Type	The maintenance type of the work unit.
Position Code	The position code in the aircraft where the work unit must be performed.
Level Code	The number identifying the level for the position code.

The system displays the following on clicking the “Preclude Work Units” pushbutton.

Precluded?

The system displays “Yes” or “No” to indicate whether the work unit is precluded or not.

Check the box in the “Select” column of the multiline, to mark a work unit for deletion.
Click the Delete icon provided in the toolbar above the multiline, to delete the selected work unit.
Check the box in the “Select” column of the multiline, to select the work unit to be precluded against the work unit specified in the “Work Unit Details” group box.

Note: At least one work unit must be selected in the multiline.

Note: You cannot select a work unit of a higher-level maintenance in the multiline, for precluding against a work unit of lower-level maintenance selected in the “Work Unit Details” group box.

Click the “Preclude Work Units” pushbutton, to preclude the work unit selected in the multiline.

Note: The system displays an error message, if any other concurrent user attempts to simultaneously modify the work unit details.

Precluding work units – An overview

The execution of certain work units becomes unnecessary due to the execution of a higher-level maintenance activity. For example, a work unit (W01) for the inspection of a component becomes unnecessary, if there is a work unit (W02) in a visit package for the overhaul of the same component. In such situations, to prevent wastage of time, resource and redundancy in the maintenance activity, the work unit (W01) is precluded against the work unit (W02). The precluded work unit (W01) will not be performed.