Defining and Performing Modifications by Using Engineering Orders

This document explains how component modifications are entered, carried out and reported by using engineering orders and engineering order documents. The document explains the engineering order process from the external document triggering the engineering order to updating of the modification status.

Use this process when an external source, like the component manufacturer, supplier or a third party such as an authority recommends a modification of a component. However, the process can also be used for internally decided modifications when better modification traceability is required.

Outcome

A specified modification is performed on all items that are affected by the modification. The service history and modification status for these items is updated with the performed work.

Uses

The completed modification allows the components to return to operational status. An aircraft may for example return to service after an inspection or component modification imposed by a manufacturer or aviation authority.

Before you start

An engineering order type must be defined in 'Engineering Order Type. Open' (MOS222).
A document type must be defined in 'Document Type. Open' (CRS236).
A service with the modification to be performed should be defined in 'Service. Open' (MOS300).

Follow These Steps

Register Modification Document

Register the modification document to describe the job that is to be performed. The document is based on an internal or external document and contains information about the source and type of the document, the validity dates and information about the affected item. Also connect an effectivity to the document to define what items or components are affected by the modification.

Register documents in 'Document. Open' (CRS230).

Connect document effectivity in 'Document. Update Effectivity' (CRS257).
Define Engineering Order

Define an engineering order to describe the modification to be performed. The engineering order contains information about modification and is connected to the engineering order document. Examples of other information defined in an engineering order is the latest performance date, the affected function area, whether the modification involves an item number change and whether the modification is mandatory. Also defined in the engineering order is the service that needs to be performed.

Define the engineering order in 'Engineering Order. Open' (MOS200) and 'Engineering Order. Open Lines' (MOS210).
Define Engineering Order Program

Define an engineering order program to retrieve all your components that are affected by the engineering order. You also create planned work orders from the engineering order program.

Start the EO program in 'Engineering Order. Open' (MOS200). This starts a batch program.

The results can be viewed and adjusted in 'Engineering Order. Update Affected Serial No' (MOS220).
Perform Work

Once the engineering order is released, it enters the standard work order flow. This means that the work order is planned along with all other orders in the system.
Update Maintenance History

Update the object's maintenance history when work is completed. When you have defined the engineering order with manual approval this has to be done manually. Engineering orders with automatic approval update the objec's maintenance history automatically when the work order is closed.

Update service history in 'Serialized Item. Update Modif Status' (MOS184).