Recording usage-based schedule for a work unit

This page allows you to modify the usage-based schedule details for the work units. Tell me more.

Select the “Edit Usage Based Schedules” link at the bottom of the “Edit Work Unit Information in Programs” page.

The “Edit Usage Based Schedule” page appears.

Note: This page will be invoked only if “Shelf Life Expiry” flag is set as “No” in the “Edit Work Unit Information In Programs” page.

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

Work Unit Update #	The number identifying the work unit update.
Maintenance Process	The maintenance process of the part, which could be “Hard-Time”, “On-Condition” or “Condition Monitoring”.
Work Unit #	The work unit number for which the date- based schedule details are to be modified.
Work Unit Type	The type of the work unit, which could be “Task”, “Std-Procedure” or “Work Package”.
Work Unit Desc	The textual description of the work unit.
Revision #	The revision number of the work unit.

Enter the following in the “Usage Based Schedule Details” multiline:

Parameter	A code identifying the consumption parameter in the aircraft or its component (Alphanumeric, 40). Mandatory. This parameter must be of the “Consumption” type defined in the “Create Parameters’ activity of the “Aircraft” business component
	Help facility available.

The system displays the following field when you click the “Edit Usage Based Schedule” pushbutton:

UOM

The unit of measurement of the parameter.

Enter the following:

Schedule Type	Use the drop-down list box to specify whether the work unit has to be performed on a “Recurring” or “One-Time” basis. The system displays “Recurring” by default. This field should be set as “One-Time”, if the “Maintenance Type” of the work unit is “Retire”. Mandatory when Remarks is provided regarding the maintenance program planned for the part.
Threshold	The number of days, weeks, months or years after which the work unit for the consumption parameter is to be carried out (Decimal). Data entry in this field is mandatory if the “Schedule Type” is set as “One-Time”. Ensure that the number entered in this field is positive.
Interval	The interval in which, the work unit for the consumption parameter is to be repeated (Decimal). Data entry in this field is mandatory if the “Schedule Type” is set as “Recurring”. Ensure that the number entered in this field is positive.
Alert Value	The value before the actual arising at which the alert needs to be given on the impending work unit execution (Decimal). Ensure that the number entered in this field is positive.
Positive Tolerance	The upper limit within which the work unit is to be performed (Decimal). Ensure that the number entered in this field is positive.
Negative Tolerance	The lower limit within which the work unit is to be performed (Decimal). Ensure that the number entered in this field is positive.
Terminating value	The value after which the maintenance activity cannot be performed on the component (Decimal).
Remarks	Any comments or supplementary information on the maintenance program planned for the part.

Note: Ensure that at least one schedule detail is entered in the multiline.

Note: The system displays the parameter values in the multiline based on the option “Decimal Format” or “HHMM Format” selected for the parameter in “Time Display Option” drop-down list box in the “Aircraft” business component while parameter creation. For e.g. If the Time Display Option is selected as “HHMM Format” and the value stored is 2.50 in the data base, the system displays 2.30 in the multiline.

Click the “Edit Usage Based Schedules” pushbutton to update the usage-based schedule information.
If you have modified the schedules and the status of the program is “Authorized”, then the system creates a new revision of the program with the status as “Fresh”.
If the “Action” field is set as "Append", the system updates the usage-based schedules that do not exist for the work unit in the part program or CMP.
If the “Action” field is set as "Overwrite", the system overwrites the usage-based schedules with the schedules provided in this page for the work unit in the part program or CMP.
If the updation status of the work unit is “Authorized”, the system will not allow you to make any changes to the schedule, or delete a record in the “Usage Based Schedule Details” multiline.
If the Eng. doc reference # exists for the task, the system allows you to modify the following schedule details of the Eng. Doc. task in the Maintenance Program, only if the process parameter “Allow modification of Eng. Doc. task in Maintenance Program” is set as “Allowed” in the “Define Process Entities” activity of the “Common Master” business component.

Schedule Type
Update Basis
Usage Based Schedule details

Note: You can update the schedule details for a task only if the maintenance operator associated with the task is also mapped to the login user, if the process parameter "Allow addition/modification of tasks from other Maint. Operator codes in Part Program? under the 'Tech. Records Process Ctrl' entity type and 'Part Prog' entity is set as '0' for No in the Define Process Entities activity of Common Master,

Recording usage-based schedule for a work unit – An overview

This page allows you to modify the usage-based schedule details for the work units. These schedules are dependent on the usage of the component and are based on the consumption parameters of the component. The schedule for the next performance of a work unit will be specified in terms of the value for the consumption parameter.

Usage-based schedules can be one-time or recurring. One-time means, that the schedule will be performed only once, when the corresponding parameter reaches the value specified. Recurring means, that the maintenance activity will be performed every time the parameter crosses the interval mentioned.

When a work unit of type “Work Package” is added and if schedules are already defined for the work package in the “Create Work Package” activity, then the system considers those schedules to arrive at the next schedule date. If a “threshold date” is provided, then this date is considered as the “Next Schedule Date”. If “threshold date” is not provided, the system adds the “Interval” to the “Manufacture Date” of the component (defined in the “Aircraft” business component) to arrive at the “Next Schedule Date”. If the manufacture date is also not available, the “Interval” is added to the “Component Induction date” to arrive at the “Next Schedule Date”.

Alert value or date specifies the value or date before actual arising of the schedule when the corresponding work unit is considered in the component maintenance forecast. You can also specify the positive and negative tolerance, which indicate the limits for the parameter value within which the work units are to be performed.

The system updates the usage-based schedule details for the work unit in the part programs or the component maintenance programs specified in the main page. It also stores the name of the currently logged in user and the current server date.

What you can do in this page

Indicate work unit schedule type for parameter

Usage-based schedules can be one-time or recurring. In case of one time schedule the work unit will be performed only once, when the corresponding parameter reaches the value specified. In the case of recurring, the work unit will be performed every time the parameter crosses the interval mentioned.

Set the “Schedule Type” field as “One-Time” to indicate that the work unit is to be performed only once.
Set the “Schedule Type” field as “Recurring” to indicate that the work unit is to be performed in repeated intervals.