Creating Maintenance Requirements

You can now create maintenance requirements and store them in maintenance FMEA.

Before you begin: You must take into account the level at which the requirement is defined. For example, the maintenance of a pump in an aircraft engine can be defined at the engine level and it will be the same for all the engine occurrences. It can be defined at the aircraft level and can be applied only to the left engine.
  1. Select a failure mode or a logical occurrence.
  2. From the Edit section of the action bar, click Create Maintenance Requirement .
  3. In the Create a Maintenance Requirement dialog box:
    1. Enter the name of the maintenance requirement.
    2. Enter a duration.

      Note: The period is defined with units (example: “0.5 h”, “180 s").

    Note: You can also drop an existing maintenance requirement on a node of the fault tree associated with a failure mode or on a node of the Structure Tree, provided it inherits from Maintenance Requirement. If the dropped requirement is accepted, the maintenance FMEA is enriched with the maintenance requirement.

  4. Click OK.
    The maintenance requirement is created and pointed by the causality relationship (a line in an FMEA table). The failure mode and occurrence to which it applies are identified as the cause occurrence and cause failure mode in this causality relationship.

    This data can also be opened in Failure Modes & Effects Analysis.

    Note: To delete a causality relationship, select a maintenance requirement or a causality relationship in the Structure Tree, and then click Delete from the Edit section of the action bar.