Modifying / terminating schedules of work units related to the engineering document

This page allows you to modify / terminate the schedules of work units related to the engineering document. Tell me more.

Select the “Edit/Terminate Related Work Unit schedules” link at the bottom of the “Create Engineering Document” or “Edit Engineering Order” page.

The “Edit / Terminate Related Work Unit Schedules” page appears.

Note: You can modify / terminate the work unit schedules only for those engineering documents that are in “Fresh” or “Revised” status.

The system displays the following fields in the “Eng. Doc. Details” group box:

Eng. Doc #	The engineering document selected in the main page.
Revision #	The revision number of the engineering document.
Subject	The textual description of the engineering document.
Applicability	The applicability of the engineering document, which could be “Aircraft”, “Component” or “Engine”.

Enter the following field in the “Aircraft Model #/Part # Information” group box:

Model #/Part #

Use the drop-down list box to select the aircraft model or part for which the work units must be retrieved.

The system lists all the unique aircraft models from the aircraft effectivity list, if the applicability of the engineering document specified in the “Eng Doc Details” group box is “Aircraft”.

The system lists all the unique part numbers from the part effectivity list, if the applicability of the engineering document specified in the “Eng Doc Details” group box is “Engine” or “Component”.

Click the “Get Details” pushbutton to retrieve the details of the selected aircraft model or part.

Note: If you modify the “Model #/ Part #”, ensure that you click the “Get Details” pushbutton.

If an aircraft model is selected in the “Model #/Part #” field, the system retrieves the work units from the approved primary maintenance program of the aircraft model.

If a part is selected in the “Model #/Part #” field, the system retrieves the work units from the approved maintenance program of the part.

Note: The system retrieves only those work units for which the schedule status is not “Inactive” or “Terminated”.

The system displays the following field in the “Aircraft Model #/Part # Information” group box, on clicking the “Get Details” pushbutton:

Model/Part Description

The textual description of the aircraft model / part.

The system displays the following fields in the “Program Work Unit Details” multiline:

Seq #	The sequence in which the work units are scheduled.
Work Unit Type	The type of the work unit.
Work Unit #	The number identifying the work unit.
Revision #	The revision number of the work unit.

Enter the following field in the “Program Work Unit Details” multiline:

Schedule Impact

Use the drop-down list box to specify the impact on the schedule of the work unit. The system lists the following options:

“None” – Select this option if there is no impact in the schedule of the work unit.
“Modification” – Select this option if there is a change in the schedule of the work unit.
“Termination on Compliance” – Select this option if the schedule is terminated on compliance of the engineering document.
“Termination from Compliance” – Select this option if the schedule must be terminated at a specified period from the compliance of the engineering document.

The system sets this field to “None” by default.

The system displays the following fields:

Work Unit Desc	The textual description of the work unit.
Maintenance Type	The type of maintenance job that must be carried out as a part of the work unit. The system displays the “Overhaul”, “Repair”, “Inspection” or “Others”.
Job Type	The job type of the work unit. The system displays “Aircraft” or “On Wing”, if an aircraft model is selected in the “Model #/Part #” field. The system displays “On-Wing” or “Off-Wing”, if a part is selected in the “Model #/Part #” field.
Reference Doc #	The number identifying the reference document of the work unit.
Schedule Status	The schedule status of the work unit which could be “Fresh” or “Active”.
Schedule Type	The schedule type of the work unit, which could be one of the following: One Time – Indicates that the work unit is executed only once. Recurring – Indicates that the work unit execution must be repeated at certain defined intervals.
Dependent Schedule?	The system displays “Yes”, to indicate that the execution of the schedule is dependent on the execution of another work unit. Else, the system displays “No”.

Enter the following fields in the “Schedule Update Options” group box:

Next Due Update Reference

Use the drop-down list box to specify the reference based on which the next due date is update for the work unit. The system lists the following options:

“Last Performed” – Select this option if the next due date is updated based on the last performed date.
“Engineering Document Compliance” – Select this option if the next due date is updated based on the engineering document compliance date.

The system sets this field to “Last Performed” by default.

Update Aircraft Model/Part Program

Use the drop-down list box and select “Required” if the schedule details must be updated in the aircraft model / part program. Else select “Not Required”.

The system sets this field to “Not Required” by default.

Click the “Update Schedule Impact” pushbutton to update the schedule impact details.

Note: If you modify the “Schedule Impact” field in the “Program Work Unit Details” multiline, ensure that you click the “Update Schedule Impact” pushbutton.

If the “Schedule Impact” is changed from “Modification” or “Termination from Compliance” to any other option, then the system deletes the changes saved in the “Schedule Modification Details” multiline.

The system displays the following fields in the “Schedule Modification Details” multiline:

The system retrieves the work units for which the “Schedule Impact” field is set as “Modification” or “Termination from Compliance”, into the “Schedule Modification Details” multiline.

Parameter Description	The description of the parameter based on which the work unit is performed. The system displays “Calendar”, for date-based schedule.
Work Unit #	The number identifying the work unit.
Impact?	Indicates whether the schedule details are modified or not. The system displays one of the following: “No Change” – Indicates that the schedule details are not yet modified for the work unit. “Modified” – Indicates that the schedule details have been modified for the work unit.
UOM	The unit of measurement of the parameter.

Enter the following fields in the “Schedule Modification Details” multiline:

Threshold	The parameter value at which the first execution of the work unit is due (Decimal). The value entered here must be positive. Data entry in this field is mandatory, if The schedule type of the work unit is “One Time”. The schedule type of the work unit is “One Time” and value is specified in the “Parameter Description” field.
Interval	The interval after which the execution of the work unit must be repeated, from the period when it was last executed (Decimal). The value entered here must be positive. Ensure that the value entered here is greater than or equal to the sum of the positive tolerance and negative tolerance. Data entry in this field is mandatory, if The schedule type of the work unit is “Recurring”. The schedule type of the work unit is “Recurring” and is value is specified in the “Threshold” or “Parameter Description” field. This field must be left blank, if the schedule type of the work unit is “One Time”.
Terminating Value	The parameter value, reaching which the work on the work unit must be terminated (Decimal). The value entered here must be positive and greater than the sum of the threshold value and the positive tolerance value. If the “Terminating Value Type” is “Absolute”, ensure that the value entered here is greater than the current parameter value of the work unit. Data entry in this field is mandatory, if the “Schedule Impact” is set as “Termination from Compliance”. This field must be left blank, if the schedule type of the work unit is “One Time”.
Alert Value	The parameter value at which an alert message would be displayed about an impending work due on the work unit (Decimal). The value entered here must be positive. Ensure that the value entered here is lesser than or equal to the negative tolerance value.
Negative Tolerance	The ending range of the parameter value by which the work unit must be started (Decimal). The value entered here must be positive.
Positive Tolerance	The starting range of parameter value by which the work unit must be started (Decimal). The value entered here must be positive.

The system displays the following fields:

Interval Type	The type of interval, which could be “Floating”.
Terminating Value Type	Indicates whether the terminating value is "Absolute" or "Interval".
Update Basis	The mode by which the due dates for executing the work units is calculated. The system displays one of the following options: Schedule – Indicates that the next due date of the work unit is calculated based on the last forecasted date/value of the work unit and the specified interval. Actual Completion – Indicates that the next due date of the work unit is calculated based on its previous completion.
Work Unit Desc	The textual description of the work unit.
Work Unit Type	The type of the work unit. The system displays “Task”, “Standard Procedure”, “Aircraft Work Package” or “Component work Package”, if an aircraft model is selected in the “Model #/Part #” field. The system displays “Task”, “Standard Procedure” or “Work Package”, if a part is selected in the “Model #/Part #” field.
Seq #	The sequence is which the work units must be performed.
Primary Work Unit	The number identifying the primary work unit.

Click the “Edit Schedule Modification Details” pushbutton to update the schedule modification details.

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

If the system displays “No Change” in the “Impact?” field and if the schedule details are modified for that record, then the system updates the “Impact?” field as “Modified” on clicking the “Edit Schedule Modification Details” pushbutton.

Modifying / terminating schedules of work units related to the engineering document – An overview

This page allows you to modify / terminate the schedules of work units related to the engineering document. You can modify / terminate the work unit schedules only for those engineering documents that are in “Fresh” or “Revised” status. Based on the applicability of the engineering document, you can specify the aircraft model or part number for which the work units are to be retrieved. You can specify the impact on the schedule for the retrieved work units.

This page allows you to either terminate the schedule of the work unit after the compliance of the engineering document or terminate the schedule of the work unit after a specific period from the date of compliance of the engineering document. You can also modify the schedule details of the work units related to the engineering document in this page.

You can modify or terminate the schedule of the work unit after a specific period of the engineering document compliance, by specifying the schedule details such as threshold value, interval, terminating value, alert value, positive tolerance and negative tolerance.