software proposed are properly vali

software proposed are properly validated, traceable to a released baseline and verify the status of any other linked component. Active ETRs on the project are then updated as required depending on their mission.This analysis shall be done before the approval of the change and act as a configuration quality gate. The group of people performing this analysis is typically the CPB but can also be a dedicated team (typically called ETR committee) depending on the complexity of the project. Limited Fleet Test process (LFT).New versions of parts, components or software may require an installation on one or several end product, for example to complete the validation of these new configurations or to execute an investigation test.The Limited Fleet Test process (see Figure 7 section 9) provides a controlled authorization, given by a cross functional team, to install this part, component or software on a limited number of products (limited fleet) with the objective to perform a specific test.The LFT process uses the mechanisms of the Change Management Process.The process starts with a Change Request proposing to modify an ETR with a new part. If the LFT is necessary and approved, the temporary configuration is documented in the corresponding ETR and a retrofit order (AVM in ERP and Work Order in Maximo) is issued to authorize the physical implementation on the product. The Change Request is maintained on hold awaiting for test results.The test results are used to determine whether the part, component or software can be deployed on one or several active ETRs or rejected. The Change Request gets then approved or rejected.The Limited Fleet Test process is an enabler of Product Safety as it allows a strong control of any modification made on the product.5.2.5 Configuration of electrical sub-assembliesPro-active control of the electrical configuration is a key success factor for BT projects. A dedicated section in the CMP shall describe how this is achieved internally and with the electrical suppliers. In this chapter, electrical refers to the scope ID 4S_18 Electrical Harnesses and Cubicles of the RBS [22].There are 3 groups of documents contributing to define the configuration of each electrical sub-assembly: Electrical Definition (Wiring diagram, Wiring List, Components list). From Engineering Mechanical Definition (cubicles, boxes, cable trays…). Typically from Engineering Industrial definition (routing instructions). Typically from MethodsThe configuration resulting from this combination of documents is tracked with the supplier to align on configurations delivered to BT. The electrical configuration at vehicle level is then managed by combining the configuration of all electrical sub-assemblies in the vehicle. The electrical configuration at vehicle level shall be part of the TIL.The main principles to be further detailed in the CMP are: Early in the design phase Methods and Engineering shall define the list of electrical sub-assemblies to be managed under configuration in line with the manufacturing strategy; Each electrical sub-assembly shall be identified with a part number; The list of documents defining the version of these electrical sub-assemblies shall be identified; The electrical cabinets and other electrical boxes shall be marked with a label including a version matrix to indicate the electrical version; Any change to the Electrical Baseline shall be documented with a Change Request in the change management tool; The changes shall be released in predefined and planned cycles called “Electrical Baselines Releases”. A Configuration Management Plan for electrical sub-assemblies shall be part of the contract with external electrical Suppliers or agreed with internal electrical Suppliers. A mechanism to include specific changes in between 2 Electrical Baseline Releases shall be formalized in this Configuration Management Plan.