Monitoring aircraft operating status

You can view the operating status of aircraft on the Fleet List page. In addition to information on the page, if you click the status icon, a pop-up window displays more about the aircraft status and links to relevant pages such as open faults, overdue tasks, work packages.

Sometimes you might not see an expected update on the Fleet List. Here is how Fleet List is refreshed:

Key events such as the creation of a new fault, or the release of an aircraft from maintenance trigger the aircraft operating status recalculation work item.
This work item has the highest priority of all work items, but processing cannot always begin immediately.
After the work item has processed the new status, the page refresh waits until the MX_CORE_MVIEW_FLEET_LIST job runs. Administrators can check the Jobs page to see the refresh interval.

When calculating operating status, in addition to assessing overdue tasks, missing mandatory components, and whether there's an open work package on an aircraft, Maintenix uses a fault escalation model to correlate fault severity with aircraft operating status:

Each fault code that your organization uses is assigned a fail severity order number in the Ref_fail_sev table.
Each aircraft operating status is assigned an operational order number in the Ref_inv_oper table. The lowest order number is assigned to the NORM status and the highest order number is assigned to the AOG status.

For an aircraft to have a particular operating status, the most severe fault on the aircraft has to have a severity order number that is equal to or higher than the operational order number for the status and lower than the value for the next status up in the escalation model. For example, if the operational order numbers are:

AOG - 80
OPEN - 26
NORM - 20

then

If the aircraft has only faults with severity 20-25, the operating status is NORM (barring other factors in the calculation)
If the aircraft has faults with severity 26-79, the operating status is OPEN (barring other factors in the calculation)

The MEL operating status is optional. If configured, this status is considered in the fault escalation calculation. The MEL operating status indicates the aircraft has one or more deferred MEL faults.

For additional information, see the fault severity section in Fault definitions.

What does the aircraft operating status mean?
Operating status	Means	Caused by
AOG	Aircraft is not flight-worthy	Overdue task Missing mandatory components AOG fault
OPEN	Aircraft might need further assessment. (The OPEN status does not drive functionality in Maintenix - it only serves as an indicator).	Undeferred fault with an Unknown severity (not AOG) Faults whose severity order number correlates to the OPEN operating status.
INM In Maintenance	Aircraft is in maintenance	Work package is started No open faults There might be deferred faults
NORM	Aircraft all meets normal operating conditions	None of the above conditions exist. Aircraft can have deferred faults whose severity order number correlates to the NORM operating status.