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.
To perform this activity, open the Serial Information page and click the Average
Utilization tab and create a new record.
- Enter the operational parameter that the average utilization value should be defined for. Use the drop-down
to select a valid operational parameter per maintenance group defined for the serial or for serials further down
in its structure.
- Enter the average utilization value for the serial. To calculate the average value, 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.
- 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.
To run the average value calculations, select the row that contains the operational parameter on which the
calculation is to be performed, and then click the option Calculate Average Value. The Calculate
Average Value dialog opens.
- If you want to calculate the average planned value for the selected primary releasing operational
parameter, enable the Planned Average option.
- To calculate the average historical value for the selected operational parameter, enable the Historical
Average option.
Note: When the average value calculation is finished, you can view the calculated average value
in the Average Value field in the Average Utilization tab.
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 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.