Viewing the scheduled dates and the values for the work units in the maintenance

Viewing the scheduled dates and the values for the work units in the maintenance program

This page allows you to view details of schedule dates and values for a specific work unit in a aircraft maintenance program. You can retrieve a work unit that must be performed as a part of the program and view the due dates for the execution of the work unit based on the date based schedules defined. You can also view the parameter values for which the next execution of the work unit is due based on the usage based schedules defined .

Select the “View Schedule” link from the “View Aircraft Schedule Summary Information” page.

The “View Schedule Date/Value” page appears.

The system displays the following details in the “Aircraft Details” group box:

Aircraft Reg #	The registration number of the aircraft that is associated to the program.
Aircraft Model #	The aircraft model to which the aircraft belongs.
Sub Fleet #	The sub fleet number to which the aircraft is a part of.

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

Maintenance Program #	The maintenance program for which the schedule information must be specified.
Revision #	The revision number of the maintenance program.
Program Desc	The description of the maintenance program.
Status	The status of the maintenance program, which can be “Fresh”, “Active”, “Inactive” or “Return”.

Enter the following field in the “Work Unit Details” group box:

Work Unit #

Use the drop-down list box to select the work unit for which the dependent work units must be specified. The system lists all the work units specified for the maintenance program along with the sequence numbers.

Click the “Get Details” pushbutton.

The system displays the following details:

Prog. Item Type	The system displays any one of the following Program Item Types: Block - Indicates the task contains a group of tasks to be executed based on a schedule Base - Indicates the task to be executed is associated to a block. Perpetual - Indicates the task is to be executed while executing any other tasks on the aircraft. As required - Indicates the task will be executed whenever required. Event Driven - Indicates the task will be executed based on the occurrence/ triggering of an event Non-block - Indicates the task to be executed is not associated to a block. To be decided - Indicates the classification of the program item type for the task will be decided late
Work Unit Type	The type of the work unit, which can be “Task”, “Standard Procedure”, “Aircraft Work Package” or “Component work Package”.
Work Unit Desc	The description of the work unit.
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Execution Type	The execution type of the work unit, which can be “Major” or “Minor”.

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

Schedule Type	Indicates whether the work unit must be executed only once or repeatedly at certain intervals. The system displays one of the following: One Time – Indicates that the work unit must be executed only once. Recurring – Indicates that the work unit must be executed repeatedly at certain defined intervals.
Updation Basis	The mode by which the due dates for executing the work units must be calculated. The system displays one of the following: Schedule – Indicates that the next due dates for carrying out the work units must be calculated based on a fixed interval. Actual Completion – Indicates that the next due dates for carrying out the work units must be calculated based on its previous completion.
Note: For the work units having both dependent and independent schedules, the system leaves the above-mentioned fields blank, if the schedule type and updation basis are different for the dependent and independent schedules.
Sch Exec Rule	Indicates the schedule execution rule of the work unit. The system displays one of the following: Earliest –when both date based and usage based schedules are defined for the work unit, the system considers the earliest of the due dates calculated by these schedules.. Latest – when both date based and usage based schedules are defined for the work unit, the system considers the latest of the due dates calculated by these schedules.
Dep Sch Indicator	Indicates the type of dependent schedule information defined for the dependent work units of the work unit. The system displays one of the following: Dt – if interval value is specified for the dependent work units Usg – if usage based schedules are specified for the dependent work units Dt / Usg – if both date based schedules and usage based schedules are specified for the dependent work units

The system displays the following fields in the “Date Based Schedule Details” group box:

Time Unit	The time unit for the date based schedule. The system displays “Minutes”, “Hours” or “Days”.
Reference Date	The reference date based on which the schedules for the work unit must be ascertained.
Threshold Date	The date on which the first maintenance activity on the work unit is due.
Last Performed Date	The date on which the work unit was last performed.
Next Scheduled Date	The next scheduled date of the work unit.
Earliest Schedule Date	The earliest scheduled date of the work unit.
Latest Schedule Date	The latest scheduled date of the work unit.
Alert Date	The date on which an alert message will be displayed about an impending due date for work unit execution.
Remaining Days	The number of days remaining for executing the work unit.
Terminating Date	The date on which the work unit must be terminated.
Remarks	Any remarks, pertaining to the date based schedule details. Click the icon to display the “View Notes Information” window. You can see the entire history of notes recorded against the task till date.

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

Parameter	The parameter based on which the work unit is performed.
Note: If the work unit has dependent and independent schedules, then all the parameters that are available for the dependent and independent schedules are listed separately.
UOM	The unit of measurement of the parameter.
Threshold Value	The parameter value at which the first execution of the work unit is due.
Last Performed Value	The last parameter value at which the work unit must be performed.
Next Schedule Value	The parameter value at which the work unit is next due to be executed.
Note: The system calculates the threshold value, last performed value and the next schedule value by applying the schedule execution rule specified for the work unit in the “Sch Exec Rule” field, and displays the same in the above-mentioned fields.
Earliest Schedule Value	The earliest parameter value at which the work unit must be executed.
Latest Schedule Value	The latest parameter value at which the work unit must be executed.
Alert Value	The parameter value at which an alert message is displayed for an impending execution due for the work unit.
Remaining Value	The difference between the current parameter value and the next due parameter value.
Terminating Value	The parameter value, reaching which the work on the work unit must be terminated.
Parameter Description	The description of the parameter.

To proceed, carry out the following,

Select the “View Dependent Schedule” link to view the schedules defined for the dependent work unit of the work unit.