Elements and Performance Criteria

Application of this unit may relate to:
Scheduled or unscheduled maintenance
Individual or team related activities
Procedures and requirements refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise.



1. DC and AC power generation and distribution system components, including generators and related multi-sourced DC power generation, starter generators alternators and regulation, control and distribution system components

2. Transformer rectifier units and/or inverters

3. Batteries and related bus tie or interlock system components and battery temperature monitoring systems

4. Motors and actuators

5. Components of gas turbine and/or piston engine ignition and starting systems (depending on enterprise requirements)

6. External/internal lights

7. Electrical components of specific electrical systems such as air cycle air conditioning, combustion heaters, equipment cooling, anti-icing and de-icing, landing gear, anti-skid, flight control, master and central warning, fuel storage and distribution, fire warning and extinguishing and engine/propeller control.

Overview of assessment
A person who demonstrates competency in this unit must be able to remove and install components of advanced DC and AC electrical systems while observing all relevant safety precautions.

Critical aspects for assessment and evidence required to demonstrate competency in this unit
It is essential that cleanliness requirements and safety precautions applicable to the system being maintained are fully observed, understood and complied with, as well as work practices associated with electrostatic sensitive devices.
Evidence of transferability of skills and knowledge related to removal and installation is essential. This is to be demonstrated by application across a range of aircraft major electrical system components encompassing electrical with mechanical interface, installations that require alignment and/or adjustment, mechanical or electrical. An understanding of the attachment methods, connection of hardware, and the need for adjustment or rigging and system operation as they relate to the work must be demonstrated before undertaking any action. The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards.
A person cannot be assessed as competent until it can be demonstrated to the satisfaction of the workplace assessor, that the relevant elements of the Unit of Competency are being achieved under routine supervision on at least one component from each of Groups 1 to 6 and on three components from Group 7, as listed in the Range Statement. This shall be established via records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry Evidence Guide.

Context of and specific resources for assessment
Competency should be assessed in the work environment, using tools and equipment specified in maintenance manuals. It is also expected that general-purpose tools, test and ground support equipment found in most routine situations would be used where appropriate.