Perform Preliminary Conformance Check

Explanation

You can perform a preliminary conformance check on the selected assembly shop order. Once disassembly or disposition of the structure or sub-structure is completed, the preliminary conformance check can be run, from the tree structure in the MRO Interim Order Structure page or from the Shop Order page, to validate the structure for assembly. This command is enabled also for partially reserved assembly shop orders. The check is performed only for the reserved materials.

When this check is executed, the expected on-log is created or updated with the serials that are reserved on the level below the selected assembly shop order. The system will check if this expected on-log structure is in conformance with the given configuration rules.

In order to validate the assembly setup for the entire overhaul object structure (i.e., create/update the expected on-log with the reserved serials), it is necessary to perform the preliminary conformance check on each assembly shop order in the work scope. This check can be performed on an assembly shop order as many times as required until the assembly shop order is completely received.

Furthermore, at the first issue of material on an assembly shop order, the preliminary conformance check will be executed automatically. This is done to ensure that the expected on-log structure is created and is up-to-date with the latest shop visit activities. Once the last assembly shop order is finished the expected on-log will be closed. Any differences found are recorded in the preliminary conformance log as warnings.

The following table shows the valid error categories used to identify the type of error for the generated records in the preliminary conformance log:

Error Category Description
Alternates Violation
  • The part with a part number and a serial number is not a prime part or valid alternate that can be installed in a certain structure position in the structure.
  • The part revision does not meet the requirements for interchangeability as set by the interchangeability rule.
Missing Minimum Config Part The structure is not complete. It does not match the minimum configuration defined in the template standard structure. The part is missing in the current serial structure.
Missing Serial Number The structure is not complete. The serial number is missing for the part with a part number.
Dependency Violations The part with a part number and serial number installed in a certain structure position does not fulfill its required dependencies against another structure position. Note: Any violations found through the preliminary conformance check will not be recorded as an entry in the preliminary conformance log. An error message is displayed instead and you will not be allowed to continue with the assembly shop order until the error is corrected. If a dependency violation exists for a part, the expected on-log will not be updated with this part.
Remaining Life Too Short
  • The remaining life for the LLP that is included in the work scope (or for its replacement) does not meet the requirement for minimum release life as set in Manage Work Scope Events using the command Assign Events to Work Scope.
  • The remaining life for the LLP that is not included in the work scope, for instance, the replacement for a scrapped LLP which is a different LLP part taken from inventory, does not meet the requirement for minimum release life as defined in Shop Visit Defaults/Minimum Release Life Definition.
Modification Not Complied on Assigned Part There are no history records for the assigned serial with a part number and serial number for the compliance of a modification (illustrated by the values in the Modification Code and Modification Revision fields.)
Modification Not Decomplied on Assigned Part There are no history records for the assigned serial with a part number and serial number for the decompliance of a modification (illustrated by the values in the Modification Code and Modification Revision fields.)
Modification Not Complied on Affected Part There are no history records for the affected serial with an affected part number and a affected serial number for the compliance of a modification (illustrated by the values in the Modification Code and Modification Revision fields.)
Modification Not Decomplied on Affected Part There are no history records for the affected serial with an affected part number and a affected serial number for the decompliance of a modification (illustrated by the values in the Modification Code and Modification Revision fields.)
Missing On Exposure Modification The On Exposure Modification for the disassembled serial(s) is not included in the relevant work scope.
Missing On Repair Modification The On Repair Modification for the serial(s) is not included in the relevant work scope.
Missing On Scrap Modification The On Scrap Modification for the serial(s) is not included in the relevant work scope.
Invalid Structure Status The operational status (Planned For Operation) of the serial structure is invalid.
Unresolved Mismatches Structure mismatches exist.
Serial does not exist in IFS/Fleet and Asset Management The serial does not exist in IFS/Fleet and Asset Management.
General LLP Problem
  • The number of repairs exceed the maximum number of repairs allowed on the serial.
  • The life of the serial has expired.
  • Life limits are not defined for the operational parameters on the serial.
  • Stress ratings are not defined on the serial.
  • A manufactured date is not defined on the life limited serial.
Overdue Mandatory Modifications Overdue mandatory modifications exist.

Any differences found are recorded in the preliminary conformance log as warnings. These log entries are created as approved warnings, and will be available for informational purposes. Once the MRO work order for the work scope reaches the Work Done status, associated preliminary conformance log entries will be removed automatically.

Prerequisites

System Effects