Perform Due Calculation for Modification Tasks

Explanation

This activity is used to calculate the due date of the modification or inspection that is to be performed on an assigned serial. The due calculation is performed for each serial based on the average operational value per month, the effective date and the execution intervals (i.e., Initial Inspections, Continued Inspections and Terminating Action) which are defined on the modification.

Prerequisites

• A modification must have been defined. This modification must be in the Active status.
• The serials on which the due calculation is to be performed must have been assigned to the active modification revision.
• The active modification must have been defined as To Be Performed on the assigned serial you want included in the due calculation. For more information, refer to the activity Decide if the Modification should be performed for the Serial.
• Execution plans must have been defined on the modification or inspection. For more information, refer to the activities Define Inspections on Modification and Define Terminating Action on Modification.
• An average operational value per month must have been registered for the assigned serial. For more information, refer to the activity Supply Operational Parameter Information.
• The date on which the due calculation is to be performed on the assigned serial must have been defined in the Effective Date field.
• Modification tasks that are in a planning state (i.e., in the Planned in Scope, Incomplete or Under Preparation status) must be connected to a maintenance order that is not yet released.

System Effects

• Due dates are calculated for the modification or inspection which is to be performed on the assigned serials.
• If the calculated due date is within the given number of Days Forewarning, a pending task is created.
• If the Rescission Date of the modification or inspection is within the given number of Days Forewarning, a pending task is created.
• The due calculation for modification tasks will handle tasks that are included on maintenance orders not yet released.

Window

Modification Details
Define Modification
Task Summary
Change Work Scope Tasks

Related Window Descriptions

Modification Details
Define Modification
Task Summary
Task Summary/LLPs
Task Summary/Modification
Change Work Scope Tasks
Change Work Scope Tasks/LLPs
Change Work Scope Tasks/Modification  

Procedure

Use the following procedure to calculate due dates for the inspection or modification that is to be performed on the assigned serials:

1. Open the Modification Details window and query (F3) for the modification revision you want. Note: This procedure can be performed using the Define Modification window as well.
2. Right-click anywhere in the header and then click Calculate Modification.
3. The calculated due dates can be viewed in the Assign Serials tab of the Modification Details window.

If IFS/Complex MRO is used, the following procedure can be used to calculate due dates for all the tasks (i.e. LLP and Modification tasks) which are to be performed during a shop visit:

1. Open the Task Summary window or the Change Work Scope Tasks window and query (F3) for the overhaul object and/or the MRO work order number you want.
2. Right-click anywhere in the header, and then click Perform Due Calculation.
3. The calculated interval maintenance due dates can be viewed in the LLPs and/or Modification tabs found in the Task Summary window and the Change Work Scope Tasks window.