Define Average Utilization per Serial

Explanation

This activity is used to define average utilization values per serial. In addition to entering an average utilization value manually, this activity gives you the option to calculate an average value based on historical operational loggings or a planned average value based on an operational budget.

When entering average values for a serial, you can enter a valid operational parameter for the serial’s part number and maintenance group. In addition, you can define average values for operational parameters valid for serials further down in the structure of the top serial. The average value per month for the operational parameter can be based on a calculated value, a manually entered value or an average value spread down from a higher level in the structure. If the value has been spread down from an upper level of the structure, it cannot be updated.

When the average utilization information is saved on the topmost serial, the average value information is spread down on all serials in the structure. This is to avoid traversing the structure to find the average value for all serials when performing the due calculations. The average value entered on the topmost serial, will always manage the value of installed serials.

The source of the average value is set automatically when the average value is calculated, manually entered or spread for an operational parameter. Valid source values are:

• Historical - the historical average value per month is calculated based on historical operational loggings for the last 12 months. If the serial does not have loggings for an entire year, the average value is calculated based on the number of months with operational loggings that do exist for the serial.
• Planned - the planned average value per month is based on the current month defined in the operational budget.
• Manual - the average value per month has been manually entered.
• Spread - the average value per month has been inherited from a higher level in the structure.

The average utilization value can be calculated based on historical operational loggings or the planned operational budget value defined for the serial. The calculation of the average historical value is based on the last twelve months of operational loggings for the serial. If the serial does not have loggings for an entire year, the average value will be calculated based on the number of months the serial has operational loggings. The calculation of the average planned value, is based on the current month defined in the operational budget for the serial. Note: The average planned value is only calculated for the primary releasing operational parameter and only for vehicle parts.

The 1st day of every month, the calculation of planned and historical average values for a serial is automatically recalculated by a background job if the source is set to Historical or Planned.

Prerequisites

• Valid operational parameters must be defined.
• To calculate the average planned value, monthly planned operational values must have been defined on the operational budget. For more information refer to the Enter Operational Budget and/or Adjust Budget per Month activities.
• To calculate the average historical value, operational loggings for the serial must exist. For more information refer to the Report Operational Logging activity.
   

System Effects

• An average utilization value will be defined for a serial and will be utilized when performing due calculations. If this has not been defined, the average value defined on the maintenance group for the serial will be used.
• If the average value calculation is run, the historical average value and the planned average value is calculated for the serials operational parameter.
• When the average value information is updated for a serial, all due calculations are automatically run for the serial and its structure. The calculations are run as a background job to avoid performance drops.
   

Window

Serial Structure Information

Related Window Descriptions

Serial Structure Information
Serial Structure Information/Additional Serial Info/Average Utilization
Operational Parameters per Maintenance Group
Serial Part/Oper. Param. per Maint. Group

Procedure

1. Open the Serial Structure Info window and query (F3) for the for the necessary top serial.
2. Click the Additional Serial Info tab and then click the Average Utilization sub tab.
3. In the Operational Parameter field, enter the operational parameter that the average utilization value should be defined for. Use the List of Values to select a valid operational parameter per maintenance group defined for the serial or for serials further down in its structure.
4. Enter the average utilization value for the serial in the Average Value field. To calculate the average value, menu option Calculate Average Value must be used. The entered average value will be spread down on underlying serials in the structure. If the value has been spread down from an upper level of the structure, the value in this field cannot be updated.
5. The Average Value Source field will be defaulted to Manual but can be changed. If the value is changed to Historical or Planned, the average value calculation associated with the value will be triggered when saving the record. The calculated average value will then again be displayed in the Average Value field. Average value source Spread cannot be manually selected but will be automatically set if the average value has been spread down from a serial above in the structure.
6. When necessary data have been entered, save the record (F12).

To run the average value calculations, perform the following procedure:

1. Open the Serial Structure Info window and query (F3) for the for the necessary top serial.
2. Click the Additional Serial Info tab and then click the Average Utilization sub tab.
3. Select the row that contains the operational parameter on which the calculation is to be performed, right-click and then click Calculate Average Value. The Calculate Average Value dialog box opens.
4. If you want to calculate the average planned value for the selected primary releasing operational parameter, select the Planned Average check box.
5. To calculate the average historical value for the selected operational parameter, check the Historical Average check box.
6. Click OK.

When the average value calculation is finished, you can view the calculated average value in the Average Value field in the Average Utilization sub tab.