Defer Fault
Explanation
Once the Maintenance Operations Controller (MOC) approves the deferral reference from the Pending
Reference Approvals page in Maintenix, the line technician can defer the fault.
If the DEFER_ON_APPROVAL configuration parameter is set to TRUE in Maintenix, the fault will be automatically
deferred upon MOC's approval of the deferral reference.
You can defer a fault on the Task Details or My Work
pages.
To defer a fault click Defer Fault from the task or fault details page and then click
Record Deferral Details. When you defer a fault, select a deferral reason and enter the deferral
action taken. You can also record a deferral note and proceed to sign off.
Depending on the Signature Service User Permissions for your user, you can sign off using a digital signature or
via an alternative sign-off process. You can use an assigned YubiKey to sign off on the deferral creating an
immutable digital signature. To do so click Sign, proceed with the sign off process, and click
Finish. The digital signature is stored against the task or fault and can be viewed at any
time.
Alternatively, if you are signing off without YubiKey authentication, simply click Finish to
complete the task.
Note: If you are deferring a fault and signing off using a digital signature, follow
through with recording the digital signature or cancel the procedure before the final step to avoid canceling at
the final step and losing all task actions performed.
Prerequisites
- The fault status must be Open.
- Deferral reasons must be set up in Aviation Maintenance/Basic Data/Fault.
- If you are using digital signature to sign off on the deferral, the application user should be registered
with a valid public certificate to use IFS signature service in Solution Manager/Signature
Service.
- If you are not using a digital signature to sign off, the E-Sign option must have been disabled from the
Signature Service User Permissions page.
System Effects
- The fault status changes to Deferred and the fault is displayed with the list of deferred
faults for the aircraft turn.
- The deferral information on the fault is updated and an action is recorded against the fault with the
deferral action provided by you.
- The DEFER_ON_APPROVAL configuration parameter in Maintenix must be set to FALSE.
- The task is unassigned from the work package and no longer displayed as a work task.
- If the sign-off was handled using a digital signature, you can download a .zip file containing digital
signature information from the Attachments/Digital Signatures tab at the bottom of
the Task Details and Fault Details pages.
Alternatively, if configured, you can view the digital signature files at the external file storage location.
This .zip file contains .json, .xml, and .pdf files. The metadata is stored in the .json and .xml files, while
the .pdf file includes the signed document containing the content reviewed by the line technician.
The file name of the .zip file follows the GUID.zip format, where GUID stands for globally unique
identifier.
The files within the ZIP file are named in the following format: <Tail number>_<Record ID>_<User
ID>_<Timestamp>
- When deferring a fault that has a signed removal of a mandatory component and there is no corresponding
installation or signed installation of a part for the same mandatory config slot and position in the work
package, you will see a warning indicating that the fault removed a mandatory component and there is no matching
part installation in the work package.
- When deferring a fault, if the number of mandatory component installations does not tally with the number of
mandatory component removals in the work package for the same config slot and position, you will see a
warning.
- If the fault you are deferring has part installation or removal records, the information related to part
changes are sent to CMS for validation upon deferring the fault.
CMS warnings are displayed on the following pages:
Web application
– Fault Details page (banner) - If the part changes are pending CMS validation, a yellow
banner is displayed to indicate that the CMS validation is pending. If a configuration issue has been
identified during the CMS validation, a red banner is displayed.
– Fault Details page/PART REMOVALS and PART
INSTALLATIONS tabs (Configuration Warning field) - You can expand the row with the
configuration warning to see more information about the warning.
– Aircraft Turn Details page (banner) - If a configuration issue has been identified
during the CMS validation, a red banner is displayed.
– Aircraft Turn Details page/DEFERRED FAULTS tab (Configuration
Warning field)
Mobile application
– Aircraft Turn Details page (banner) - If a configuration issue has been identified
during the CMS validation, a red banner is displayed.
– Aircraft Turn Details page/Deferred Faults tab (Configuration
Warning field)
– Fault Details page/Part Changes tab (Configuration
Warning field) – You can select View Warning to see more information about the
warning.
For more information, see About CMS Validations.