Figure 2 shows the templates required to represent a work order. The templates shown in yellow in Figure 2 are standard OASIS template. Those shown in light green are business templates developed specifically for the MoDAvDEX context.

Further details of how to represent a work order using ISO 10303 239 PLCS is provided in Aviation Maintenance DEX: Representing a maintenance work order - PLCS representation.

The following mandatory templates are shown in Figure 2 and used to represent different aspects of the work order. Figure 2 also shows a number of optional templates which are described in the Characterizations section.

Template: #1 representing_work_order

The template: #1 representing_work_order (Figure 2) is used to represent the maintenance work order.

Template: #6 MoDAvDEX.reportable_item_structure

The template: #6 MoDAvDEX.reportable_item_structure (Figure 2) is used to represent the reportable item in the context of its end item, parent or higher assembly and position within the end item. The template also allows the properties, such as life properties, of the reportable item, the end and parent item, to be recorded.

NOTE    If reportable item is not being identified in the context of its end item, parent or higher assembly and position within the end item use the template MoDAvDEX.reportable_item.

NOTE    Some Engineering and Asset management systems version individual assets, that is a version number is associated with the asset to indicate that a change has been made to the asset. For example, when an engineering modification is made. If this is the case, the template: #6 MoDAvDEX.reportable_item_structure represents the reportable item before the change was made and template: #7 MoDAvDEX.reportable_item_structure represents the reportable item after the change was made. The work order is related to the reportable item that resulted from the change by the assigning_activity with the following values are set

Template #8#9 (Figure 2): assigning_activity Show template parametersHide all template parametersShow all template parameters
Description

Template #8#9 (Figure 2): assigning_activity Hide template parametersHide all template parametersShow all template parameters
Description
Parameter name:	Parameter value:	Parameter description:
role_class_name	Activity_output	The class name of the External_class corresponding to the role of the assignment, e.g. "Activity input" (urn:plcs:rdl:std:Activity input), or "Activity output" (urn:plcs:rdl:std:Activity output).
role_ecl_id	"urn:plcs:rdl:std"	The identifier of the External_class_library storing the definition of the class referenced by the parameter @role_class_name.
assigned_activity		The directed activity in the work order
items		the reportable item

Template: #4 MoDAvDEX.maintenance_activity

The template: #4 MoDAvDEX.maintenance_activity (Figure 2) is used to represent the activity that has been done under the authorisation of this work order.

NOTE    MoDAvDEX.maintenance_activity is not instantiated by this template.

Template: #2 MoDAvDEX.referencing_maintenance_task

The template: #2 MoDAvDEX.referencing_maintenance_task (Figure 2) is used to reference the standard maintenance task that has been carried out under the authority of the work order. If no standard maintenance task is used then use Template: #3 representing_typical_activity.

Template #2 (Figure 2): referencing_maintenance_task Show template parametersHide all template parametersShow all template parameters
Description

Template #2 (Figure 2): referencing_maintenance_task Hide template parametersHide all template parametersShow all template parameters
Description
Parameter name:	Parameter value:	Parameter description:
task_id		The identifer of the task
task_version_id		The version of the task. If the task is not versioned use '/NULL'

NOTE    MoDAvDEX.referencing_maintenance_task is not instantiated by this template.

Template: #3 representing_typical_activity

The expectation is that Engineering and Asset management systems maintain a defined set of standard maintenance tasks. Work is then done in accordance with these tasks. The tasks are represented by the template #2 MoDAvDEX.referencing_maintenance_task. In the event that there is no predefined task for defining the work to be done, the template: #3 representing_typical_activity (Figure 2) is used to represent the standard description of an activity that has been performed under the authority of the work order.

Template #3 (Figure 2): representing_typical_activity Show template parametersHide all template parametersShow all template parameters
Description

Template #3 (Figure 2): representing_typical_activity Hide template parametersHide all template parametersShow all template parameters
Description
Parameter name:	Parameter value:	Parameter description:
id	@wo_id	The identifier of the work order is used to identify the typical activity.
id_class_name	Activity_method_identification_code	The name of the class being used to classify the identification (Identification_assignment) of the typical activity. This provides the role or reason for the identification.
id_ecl_id	"urn:plcs:rdl:std"	The identifier of the External_class_library storing the definition of the class referenced by the parameter @id_class_name class.
id_owner	LITS	The name or identifier of the organization owning the identifier of the typical activity.
id_owner_class_name	Organization_name	The name of the class being used to classify the identification of the organization. For example CAGE code, or organization name.
id_owner_ecl_id	"urn:plcs:rdl:std"	The identifier of the External_class_library storing the @id_owner_class_name class
type	Typical_activity	The name of the class being used to classify the typical activity.
type_ecl_id	"urn:plcs:rdl:std"	The identifier of the External_class_library storing the definition of the class referenced by the parameter @type class.

NOTE    representing_typical_activity is not instantiated by this template.

Template: #10 assigning_reference_data

The template: # assigning_reference_data (Figure 2) is used to represent the type of the work order. For example, scheduled or unscheduled maintenance.

Template: #11 assigning_asserted_state

The template: # assigning_asserted_state (Figure 2) is used to represent the status of the work order.

Template #11 (Figure 2): assigning_asserted_state Show template parametersHide all template parametersShow all template parameters
Description

Template #11 (Figure 2): assigning_asserted_state Hide template parametersHide all template parametersShow all template parameters
Description
Parameter name:	Parameter value:	Parameter description:
state_class_name	Work_commissioned Work_underway Work_completed	The work order has been raised Work has started Work has completed
state_ecl_id	"urn:plcs:rdl:std"	The identifier of the External_class_library storing the definition of the class referenced by the parameter @state_class_name.
assigned_to	Work_order	The work order that is instantiated by representing_work_order.