Modifying deferral limits for a maintenance report

This page enables you to specify the deferral limits for a work unit. Tell me more.

Select the “Edit Deferral Limits” link in the “Processing Discrepancies” page.

The “Edit Deferral Limits” page appears.

The system displays the following field:

Date Format

The format in which the date fields are displayed in this page. This format is displayed from the "User Preferences" business component based on the login user ID. In case the format is not defined, the system displays the date format from the “Enterprise Modeling” business component by default.

The system displays the following fields in the “Maint Report Details” group box:

Maintenance Report #	The maintenance report selected in the “Process Discrepancies” page.
Status	The status of the maintenance report.
Maint Report Description	The textual description of the maintenance report. Zoom facility available.
Deferral Authorization #	The number identifying the deferral authorization.

Enter the following field in the “Time Based Deferrals” group box:

Deferred By (Days)

The number of days by which the work unit is deferred (Integer). Ensure this is a positive value. Leave this field blank, if you wish to defer based on parameter value.

The system displays the following fields in the “Usage Based Deferrals” multiline:

Parameter	The parameters, such as flying cycles, flying hours, engine cycles or engine hours.
UOM	The unit of measurement of the parameter value.
Present Value	The present value of the parameter.

Enter the following field:

Deferred By

The value by which the deferral value for parameter is deferred (Decimal). Ensure this is a positive value.

The system displays the following field:

Parameter Description

The textual description of the parameter.

The system displays the following field in the “Next Schedule Details” group box on clicking the “Edit Deferral Limits” pushbutton:

Deferred Till Date

The date till which the work unit is deferred. The system displays the earliest date of the time based or usage-based deferral.

Note If the deferral type Is “MEL”, then ensure that the deferral limit does not exceed the MEL limits as identified in the MEL list for the aircraft model.

Click the “Edit Deferral Limits” pushbutton to update the modified deferral limits.

The system updates the details and calculates the date till which the work unit is deferred.

Note: The system calculates the deferral date as follows:

For time based schedules:

Deferred Till Date = Date of deferment request + Deferred By (Days).

For usage based schedules:

Deferred Till Date = Date of deferment request + ((value as on Deferment Req. Date+ Deferred Value) / Utilization Factor per day).

Modifying deferral limits for a maintenance report – An overview

This page enables you to specify the deferral limits for a work unit. You can modify the deferral limits for maintenance report, which is not in the “confirmed” status. You can specify deferral limits based on time, usage or both. In time-based deferral, you need to enter the number of days by which you want to defer the work unit. In usage-based deferral, you need to enter the parameter value by which you need to defer the work unit. The system displays flying cycles, flying hours, engine cycles and engine hours, as the parameters. On updating the modifications, the system calculates the date till which the work unit is deferred, based on the modified deferral limits.