There can be several reasons for reconfiguring a running work scope. One of the main reasons being the changes introduced to the overhaul object's structure as a result of a Different Part Found scenario. A Different Part Found (DPF) scenario occurs when the expected serial part is not the same as the serial part received during disassembly. DPFs are handled through several processes.
See also Change Work Scope.
Once the interim order for the work scope is released, the expected off-log
and off-log are created. At creation, these logs will be populated with a copy
of the overhaul object's serial structure (in Fleet and Asset Management), since
it is;
a. after the disk sheet updates have been performed by the customer,
and,
b. before the disassembly orders for the overhaul object have started
When the first disassembly order is started the serial structure in Fleet and Asset Management will no longer be intact. The expected off-log and off-log can then be used to view details of the structure, as it was when the maintenance process started.
The expected off-log will never change, it retains information of the original
structure throughout the entire maintenance process. The off-log is updated
with the serials found during disassembly of the overhaul object. If
all serials are found as expected (i.e., no DPF), details in the expected off-log
and off-log will be the same.
However, if serials that are not expected
are found (i.e., DPF occurs), the expected off-log and off-log will not contain
similar details. The off-log will be updated with the new serials that
were found during the disassembly process. These new serials will be created
automatically if they do not exist in the application. Additional information
for the new serial must be entered manually in Fleet and Asset Management. The
old serials that, although expected, were not in the overhaul object,
will be shown in the generated Structure Mismatch Log. You need to update the
serial structure in Fleet and Asset Management according to the data generated
in the structure mismatch log. For instance, you need to remove the old serial
from the structure after a DPF occurred. Note: When an assembly shop
order is closed for each level in the structure, the associated structure in
the off-log is closed.
Once disassembly and disposition have been completed for the structure or sub-structure, a preliminary conformance check must be run in order to validate the assembly setup. You can manually run a preliminary conformance check on the assembly shop order. The preliminary conformance check will also be executed automatically at the first issue of material on an assembly shop order. Through this check the system will verify that the structure on the level below is in conformance with given configuration rules and that the chosen assembly shop order contains reserved serials.
One other significant result of the preliminary conformance check is that the expected on-log is created [or updated]. The expected on-log is created [or updated] on a level-by-level basis. The log will be populated with serials on the level below the selected assembly order each time the preliminary conformance check is run. When the last assembly order is finished the expected on-log will be closed.
A final configuration conformance check can be run once assembly of the overhauled object is completed. Through this check the system will verify that all work scope events are signed off, the structure is completed according to the template structure and given configuration rules, and that all shop visit requirements have been fulfilled. Warnings generated through this check will be shown in the final conformance log. A person with relevant authority, for instance, an engineer, will manually perform corrections on the structure OR approve the warning record. Once all warnings have been approved, the operational condition of the overhaul object is set to Operational and the status of the associated MRO work order is set to Work Done. When the status of the MRO work order (i.e., the work order for for the work scope) is set to Work Done, the actual on-log is created.
Usually, the expected on-log and on-log will contain similar structure details. However, if serials other than the reserved serials are used during assembly of the structure, the expected on-log and on-log will contain different structure details.
The following list outlines a typical work flow for executing a work scope for a shop visit.