Revising the deferral limits for the discrepancies in a maintenance report

This page allows you to revise the deferral limits for the discrepancies in a maintenance report. Tell me more.

Click the hyperlinked discrepancy number in the multiline of the “Select Discrepancy” page.

The “Revise Deferral Limits” page appears.

The system displays the following fields:

Date Format

The format in which the date fields appears 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:

Note: This group box appears collapsed on launch of the page.

Maint. Report #	The number identifying the maintenance report, for which deferral limit must be revised.
Discrepancy Type	The type of the discrepancy, such as PIREP, MIREP, Cabin or Non-Routine.
Discrepancy Description	The description/short name of the discrepancy.
ATA #	The ATA chapter for which the maintenance report has been raised.
Tracking Status	The tracking status of the maintenance report.
Processing Status	The processing status of the discrepancy, which can be “None” or “Under Analysis”.

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

Aircraft Reg. #	The registration number of the aircraft for which the maintenance report has been raised. For main base operations, the Aircraft corresponding to the selected discrepancy # must be online.
Aircraft Model #	The model number of the aircraft for which the maintenance report has been raised.
Part # / Serial #	The part - serial number for which a discrepancy has been reported.
Component #	The number identifying the component for which a discrepancy has been reported.

The system displays the following fields in the “Discrepancy Details” multiline:

Discrepancy #	The number of the discrepancy that has been reported for the aircraft.
Log Item #	The code identifying the log item which contains the discrepancy details.
Discrepancy Description	The textual description of the discrepancy.
Source Type & No	The source of the discrepancy, which could be discrepancy or task and the ID of the source.
Recurring	Indicates whether the discrepancy needs to be re-inspected at specified intervals or not. The possible values are “Yes” and “No”.
Discrepancy Type	The type of discrepancy, which can be “PIREP” or “MIREP”. PIREP denotes that the discrepancy has been reported by the pilot while recording the journey log. MIREP denotes that the discrepancy has been reported by the mechanic while raising the work order.
Discrepancy Category	The user-defined category that has been defined for the discrepancy.
Tracking Status	The user-defined tracking status defined for the discrepancy.
ATA #	The ATA chapter on which discrepancy has been reported.
Fault #	The fault code defined in the “Fault Isolation Manual” business component that is applicable to the discrepancy being reported.
Source Document Type	The type of the source document in which the discrepancy was reported.
Source Document #	The number identifying the source document in which the discrepancy was reported.
Reported Date	The date on which the discrepancy was reported.
File Name	The name of the file corresponding to the source document.
Report Created At	The organization unit at which the maintenance report has been created.

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

Deferral Type	The deferral type of the discrepancy, which can be “MEL” or “CDL”.
Reason for Deferral	The reason for deferring the discrepancy earlier.
Deferral Limit Type	The deferral limit type of the discrepancy, which can be one of the following: “Usage Based” – indicates that the discrepancy will be deferred till the value specified for the usage parameter is reached. “Calendar Based” – indicates that the discrepancy will be deferred based on the time specified. “Calendar & Usage Based” – indicates that the discrepancy will be deferred till the specified time as well as the specified parameter value is reached.
Deferral Limit Basis	The deferral limit basis of the discrepancy, which can be one of the following: “Whichever is earlier” – indicates that the discrepancy will be deferred based on the time specified or usage specified, which terminates earlier. “Whichever is later” – indicates that the discrepancy will be deferred based on the time specified or usage specified, which terminates later.
Deferral Item #	The deferral item number against which the discrepancy was reported.
Limit Control	The limit control of the discrepancy, which can be one of the following: “Hard” – Indicates that the discrepancy has to be resolved with the specified time. “Suggested” – Indicates that the discrepancy can be further deferred.
Deferral Item Description	The textual description of the deferral item against which the discrepancy was reported.
Deferral Item Category	The category to which the deferral item belongs.
Deferral Authorization #	The authorization number given for the deferral.
Hold Item #	The hold item # or the tracking item # of the deferred discrepancy.
Repeat?	Indicates whether the discrepancy requires inspection at specified intervals.
Source Type & No	The type and ID of the source of the discrepancy.
Deferral Comments	Additional comments about the deferral, if any.
Reference Date	The reference date from which the discrepancy was deferred.

Modify the following fields in the “Deferral Revision Details” group box, if required:

Deferral Type	Use the drop-down list box to specify the deferral type for the discrepancy. The system lists the values “MEL”, “CDL” and all the other deferral types that are defined as “Active” in the “Configure Document Attributes” activity of the “Common Masters” business component.
Reason for Deferral	Use the drop-down list box to specify the reason for deferring the discrepancy further. The system lists all the active quick codes defined for the type “Reason for Referral” in the “Compliance Tracking & Control” business component. By default, the system displays the reason defined for the maintenance report.
Deferral Limit Type	Use the drop-down list box to specify the deferral limit type. The drop-down box displays deferral limit types based on the deferral type of the discrepancy. If the deferral type is “MEL” or “CDL”, the available options are: “Usage Limited” – Select this option if the discrepancy has to be deferred till the value specified for the usage parameter is reached. “Calendar Based” - Select this option if the discrepancy has to be deferred based on the time specified. “Calendar & Usage Based” – Select this option if the discrepancy has to be deferred till the specified time as well as the specified parameter value is reached. This field is set to the already saved deferral limit type for the discrepancy by default.
Deferral Limit Basis	Use the drop-down list box to specify the deferral limit basis, which could be one of the following: “Whichever is earlier” – If you select this option, then the discrepancy will be deferred based on the time specified or usage specified whichever terminates earlier. “Whichever is later” – If you select this option, then the discrepancy will be deferred based on the time specified or usage specified whichever terminates later. The above values are listed along with blank, if the attribute “Enforce Deferral Item #” defined for the selected Deferral Type is set as “No”. This field is defaulted with the limit basis defined for the deferral item # for the aircraft model, if the discrepancy is deferred by a valid deferral type & item # combination.
Deferral Item #	The deferral item number against which a discrepancy has been reported Mandatory (Alphanumeric, 150). For any deferral type, you can specify new deferral item #. However, when you specify new deferral item #, it is mandatory that you also provide the deferral limit values: This field is mandatory if the attribute “Enforce Deferral Item #” defined for the selected Deferral Type is set as “Yes” in the Common master business component. Help facility available.

Note: If the “Deferral Type” is set to “MEL” or “CDL” and if you specify valid deferral item #, the system retrieves the MEL or CDL category for the deferral item number. For the MEL or CDL category, the system retrieves the “Limit Type”, “Limit Basis”, “Deferral Duration Limit” and “Deferral Duration” as defined in the “Configuration” business component and displays them in the fields.

The system displays the following.

Deferral Item Description	The short name/description of the deferral item #.
Deferral Category	The deferral category of the deferral item #.

Modify the following, if required.

Limit Control	Use the drop-down list box to specify the limit control, which could be one of the following: Hard – Denotes that the discrepancy must be strictly processed within the deferred date or value. Suggested – Denotes that a superior can further defer the discrepancy. If a discrepancy has been selected in the previous page, then this field is set to the deferral limit type that is already specified for the discrepancy. Otherwise, this field is set to “Hard” by default.
Deferral Authorization #	The authorization number for the deferral (Alphanumeric, 40). If the component that is being deferred belongs to MEL, then you must obtain an authorization from a superior. The relevant authorization number must be entered here. For deferral types “MEL” and “CDL” the deferral authorization # is mandatory, if "Mandate Authorization Reference #?" for the deferral type is set to "Yes" in the Configure Document Attributes activity of Common Masters business component.
Hold Item #	The hold item # or the tracking item # of the deferred discrepancy.
Repeat?	Use the drop-down list box to specify whether the discrepancy requires inspection at specified intervals. The system lists the following values: Yes - Select this option to specify that the discrepancy needs to be re-inspected at specified intervals. No - Select this option to specify that the discrepancy need not be re-inspected.
Source Type & No	Use the drop-down list box to select the source type of the discrepancy, which could be discrepancy or task. Specify the ID of the discrepancy or the task in the field provided alongside. (Alphanumeric, 40).

The system displays the following:

Revision Count

The number of times the deferral limits has been revised for the discrepancy.

Enter the following:

Deferral Comments

Additional comments about the deferral, if any (Alphanumeric, 2000).

The system displays the following fields in the “Time Based Deferral Limits” group box:

Existing Deferral Duration	The duration for which the discrepancy was already deferred.
Existing threshold date	The existing date until which the discrepancy can be deferred.

Enter the following:

Revised Deferral Duration

The duration for which the discrepancy is further deferred (Numeric).

Use the drop-down list box provided alongside, to specify the unit of measurement for the duration. Data entry in this field is mandatory, if the “Deferral Limit Type” field is set to “Calendar Based” or “Calendar & Usage Based”.

By default, this field displays the deferral duration defined for the deferral category of the deferral item # in the Configuration component, if the deferral type is “MEL” or “CDL” and the deferral item # you specify is valid and Active for the deferral type. You can override this and specify the deferral duration of your choice. However, the deferral duration you specify must not exceed the duration defined for the calendar based or usage based & calendar based deferral limit type for the deferral category. The system does not allow you to specify any value, if the deferral duration is not defined for the calendar based or usage based & calendar based deferral limit type for the deferral category of the deferral item #. Note that the deferral duration you specify must be less than or equal to the Deferral Limit Control.

The system displays the following field:

Revised Threshold Date

The revised date until which the discrepancy can be further deferred.

More details

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

Parameter	The parameters defined for the aircraft in the “Aircraft” business component.
Parameter Type	The type of the parameter, which could be “Attribute”, “Technical”, “Range” or “Consumption”.
UOM	The unit of measurement defined for the parameter.
Reference Value	The reference flight hours of the aircraft. The earliest created date of the discrepancies that is associated with the MR. Based on this value, the threshold date and threshold value are calculated. The value entered here must be positive.
Existing Deferral Value	The value until which the discrepancy has been currently deferred.

Enter the following multiline field:

Revised Deferral Value

The value to which the discrepancy has to be deferred. Data entry in this field is mandatory, if the “Deferral Limit Type” is set to “Usage Limited” or “Usage & Time Limited”.

By default, this field displays the deferral value defined for the parameter for the deferral category of the deferral item # in the Configuration component, if the deferral type is “MEL” or “CDL” and the deferral item # you specify is valid and Active for the deferral type. You can override this and specify the deferral duration of your choice. However, the deferral value you specify must not exceed the duration defined for the parameter of the usage based or usage based and calendar based deferral limit type for the deferral category.

If multiple parameters exist for usage-based deferral limit type, deferral value must be defined for at least one of the parameters. For usage based and calendar based deferral limit type, deferral value for at least one of the parameters and deferral duration must be defined for the deferral category.

The system displays the following fields:

Existing Threshold Value	The value until which the discrepancy has been deferred.
Revised Threshold Value	The revised value until which the discrepancy can be deferred, which is the sum of the values in the “Reference Value” and “Revised Deferral Value” fields.
Parameter Description	The textual description of the parameter.

Click the “Revise Limits” pushbutton to store the revised deferral details.

The system stores the revised details. The values in the “Revised Deferral Duration” and “Revised Deferral Values” fields are considered as the “Deferral Duration” and “Deferral Value” and updated accordingly in the Maintenance Report.

If “Additional Approval Required?” for the revised deferral type is set to “Yes”, the system sets “Additional Approval” flag of the discrepancy to "Not Approved". Conversely, if “Additional Approval Required?” is set to “No”, “Additional Approval” flag of the discrepancy is set to “Not Required".

To proceed

Select the “Edit Parts Requirement” link to edit the parts requirement details corresponding to the deferred discrepancies.

Refer to the “Maintenance Task” online help for more details.

Select the “View Discrepancy Deferral History” link to see details of deferral history of the discrepancy till date.
Select the “View Resolution History” link to see details of resolution history of the discrepancy till date.

Revising the deferral limits for the discrepancies in a maintenance report – An overview

This page allows you to revise the deferral limits specified for a maintenance report selected in the previous page. The system displays the existing time based or usage based schedules for the maintenance report and allows you to revise them.

What you can do in this page

Revise deferral limits

You can revise the deferral limits that have been specified for a maintenance report.

Revise time based schedule by specifying the revised value in the “Revised Deferral Duration” field in the “Time Based Deferral Limits” group box.
Revise usage based schedule by specifying the revised value in the “Revised Deferral Value: in the “Usage Based Deferral Limits” multiline.
Click the “Revise Limits” pushbutton.