L: Explanation of Function
11. Maintenance
11.1 Plan Maintenance	To plan all maintenance identifiable at that date: Looking at the resource and asset availability and grouping the maintenance logically. Then scheduling the tasks in accordance with operational and maintenance cycle and resource availability.
11.2 Execute Maintenance	This function produces short term / resourced work schedules based on the long term maintenance plan, factors in unplanned maintenance requirements and priorities, and controls the production and issue and closure of Maintenance Work Orders.
11.3 Monitor & Control Maintenance	This function manages the maintenance function performance, reviewing performance against schedules and providing feedback in terms of revised targets. It also initiates corrective action to achieve maintenance targets.
11.1 Plan Maintenance
11.1.1 Scope Maintenance	This function determines all maintenance activities to be performed for a selected scope of assets and planning horizon. Preventative maintenance will be driven by either calender or where it is utilisation based by the reported usage. Other maintenance will included planned modification embodiments, work identified and not completed during previous maintenance periods and corrective maintenance deferred for planning.
11.1.2 Structure Maintenance	This function considers priorities and the logical progression of maintenance tasks and adds a potential sequence to their delivery.
11.1.3 Schedule Maintenance	This function produces the maintenance plan by considering the prioritised task list adds a sequence and date to all tasks allocated to a specific maintenance opportunity, related tasks(incl. triggers), location, materiel availability, resource requirements and resource balancing considerations.
11.2 Execute Maintenance
11.2.1 Allocate Maintenance Task	This function allocates specific assets to particular manitenance activities, applying the requirements of the Maintenance Plan and particular human & infrastructure resources.
11.2.2 Perform Maintenance Task	This function carries out the actual maintenance activity in accordance with a work order and the policies & documentation laid out in the Support Solution.
11.2.3 Close Maintenance Task	This function closes out the maintenance task and provides post maintenance feedback on the asset and the resources comsumed.
11.3 Monitor & Control Maintenance
11.3.1 Task Assurance	This activity monitors the quality of tasks executed against quality standards and contractual specifications.
11.3.2 Maintenance Exception Handling	This activity monitors all tasks and actions all delays, defers, non-conformances and emergent work, by re-scheduling where appropriate and obtaining approvals (incl concessions) where required.
11.3.3 Report Maintenance	This activity collate all feedback against tasks, assets and resources/material for a given selection (maintenance opportunity/ asset/ time) and presents the information in a prescribed format.

Maintenance is the inspection, overhaul, repair , rectification, modification, preservation and parts replacement, to ensure that the equipment is kept in a serviceable condition.

It covers all scheduled and non-scheduled events, preventative and non-preventative activities, including repair, servicing, overhaul, upgrade to an item in accordance with direction.

• Maintenance

• Section D: Maintain

• Level 0

• LCIA

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• Maintenance ( 11) Navigation View model
• Navigation Matrix Navigation View model

• 02. Mission / Operation Activity Insight Model
• 02. Mission / Operation Activity Model
• 03. Fleet and Asset Activity Insight Model
• 03. Fleet and Asset Activity Model
• 03.1 Structure Fleet Activity Model
• 03.2 Establish fleet Activity Model
• 03.3 Establish Fleet Support Structure Activity Model
• 03.4 Sustain Assets Activity Model
• 03.5 Allocate Assets to Task Activity Model
• 06. Configuration Activity Model
• 06. Configuration Activity Insight Model
• 06.1 Manage Configuration Baseline Activity Model
• 06.1.2 Specify Configuration Activity Model
• 06.1.3 Manage Baseline Activity Model
• 06.2 Manage Configuration Change Activity Model
• 07. Event Activity Insight Model
• 07. Event Activity Model
• 08. Training Activity Insight Model
• 08. Training Activity Model
• 09. Engineering Activity Insight Model
• 09. Engineering Activity Model
• 10 Supply Activity Model
• 10.2 Manage Inventory Activity Model
• 10.2.3 Control Inventory Activity Model
• 10.3 Manage demands and returns Activity Model
• 10.5 Manage Stock Holding Point Activity Activity Model
• 10.6 Manage Stored Items Activity Model
• 11. Maintenance Activity Insight Model
• 11. Maintenance Activity Model
• 11.1 Plan Maintenance Activity Model
• 11.2 Execute Maintenance Activity Model
• 11.3 Monitor & Control Maintenance Activity Model
• 12. Commercial Activity Insight Model
• 12. Commercial Activity Model
• 12.2 Conduct Sourcing Activity Model
• 12.3 Manage Contract and Evaluate Activity Model
• 13. Resources Activity Model
• 13. Resources Activity Insight Model
• 14. Corporate Policy and Procedures Activity Model
• 14. Corporate Policy and Procedures Activity Insight Model
• 15. Manufacture / Source Activity Model
• 17. Finance Activity Model
• 17. Finance Activity Insight Model
• 18. Strategy and Planning Activity Model
• 18. Strategy and Planning Activity Insight Model
• 19. Purchasing Activity Model
• 19. Purchasing Activity Insight Model
• LCIA Version 3.5 Activity Model
• MAINTAIN Activity Model

• LCIA Fleet and Asset View Aggregate View Model
• Supply View Aggregate View Model