Function documentationMRO Subcontracting in Refurbishment Orders

 

In aircraft or other technical objects such as engines, high value components (rotables) are often used in a remove-install-rework scenario. The high value components are replaced in cases of damage by a serviceable rotable and then refurbished at a later point in time using a separate order. The refurbishment of high value faulty rotables is of considerable economic importance for companies, and is a core process in plant maintenance.

The rework can either be executed internally (inhouse repair) or by an external vendor (subcontractor).

Note Note

Partial subcontracting of certain repair tasks is also possible.

End of the note.

If an external service is needed to refurbish the part, one or more maintenance tasks are transferred to a subcontractor. The part to be refurbished, along with the provided components that are to be installed in the part during the maintenance process (if required), will be delivered to the subcontractor.

After rework the part returned by the subcontractor is received into stock.

The refurbishment process can be started manually by creating a maintenance order or be triggered from the material requirements planning (MRP) based on the current stock situation.

Planned orders created in MRP are converted into refurbishment orders to start the refurbishment process. Quantities and dates for the refurbishment order are provided from the planning process

Creating refurbishment orders from planned orders is only possible for materials where the spare parts class code is set in the material master record. For more information, see Converting Planned Orders to Refurbishment Orders.

The following scenarios are supported for the subcontracting process with refurbishment order:

Prerequisites

You have activated the business function Refurbishment and Subcontracting (LOG_EAM_ROTSUB),Refurbishment and Subcontracting 2 (LOG_EAM_ROTSUB_2) and Serial Numbers in Purchasing (LOG_MM_SERNO)

Features

The following scenarios are supported for the subcontracting process with refurbishment order:

  • Goods movement types

    The subcontracting process is supported for refurbishment orders that use transfer postings (313/315) as well as classic goods receipt and goods issue component movement types (101/261). For more information, see Additional Movement Types.

  • Beside the company’s own stock (normal stock), subcontracting from refurbishment orders is also available for the following stock types:

    • Project stock (Q) — Company own stock or customer stock linked to a project

    • Orders on hand (E) Material related to a specific customer order

  • It is possible to trigger the subcontracting process from any given operation of the refurbishment order, including the first operation.

  • Converting planned orders to refurbishment orders

    During the conversion, you can select serial numbers and transfer them to the refurbishment order.

  • The integrated solution supports all standard goods movement transactions including MIGO, MB11, and ADSUBCON

    Note Note

    In the subcontracting monitor (ADSUBCON), you can only make goods movements for external operations where the basis is the purchase order. In a refurbishment scenario, the basis is always the refurbishment order (though for external operations the refurbishment order can generate purchase orders as well).

    End of the note.
  • Refurbishment order type SM03 is used within the subcontracting process for return material authorization orders.

Caution Caution

  • Forward exchange is not supported

  • It is not possible to allow more than one planned modification of the material number within one refurbishment order

  • The following special stocks are not supported:

    • Consignment vendor (K) — Material that belongs to a vendor

    • Returnable transportation package vendor (M) — Material that has been loaned from a vendor

    • Customer stock (B) — Material that belongs to a customer

  • A combination of one planned modification with an unplanned material number change is generally possible, but only for exchanges and replacements and not unplanned modifications. As soon as it is planned to do the upgrade internally it is not allowed that the subcontractor makes an unplanned modification (same equipment). Instead, the subcontractor can send an exchange (same material number, different serial number) or a replacement (material number, different serial number).

  • For refurbishment orders with subcontracting operations not in DIMP, you cannot have unplanned modifications for operations that use MPN interchangeability.

End of the caution.