Unit of competency details

Unit descriptor 

This unit of competency is part of the MEA40610 Certificate IV in Aeroskills (Avionics) workshop training pathway. It covers the competencies required to repair or overhaul aircraft electrical and electro-mechanical components.

Application of the unit 

This unit requires application of hand skills and knowledge of component repair and overhaul procedures relating to electrical and electro-mechanical components.

Applications include fixed and rotary wing aircraft components repaired or overhauled in aviation maintenance workshops

Prerequisite units 

Employability skills 

This unit contains employability skills.

Elements describe the essential outcomes of a unit of competency.

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide.

ELEMENT 

PERFORMANCE CRITERIA 

1. Determine requirements

1.1. Component defect reports (removal tags) or customer order are correctly interpreted and matched by part and serial numbers

1.2. Components  are inspected and/or operated through prescribed test procedures to establish serviceability or confirm defects, as required

1.3. Modification status is clearly established to assist in determining the overhaul requirements for the components

1.4. Extent of overhaul or repair is correctly identified and documented

2. Troubleshoot electrical/electro-mechanical components

2.1. Available information from maintenance records and test results is used, where necessary, to assist in fault determination

2.2. Logical processes are used to ensure efficient and accurate troubleshooting

2.3. Specialist advice is obtained, where required, to assist with, or confirm, the fault and rectification requirement

2.4. Electrical/electro-mechanical component faults are located and the causes of the faults are clearly identified

2.5. Fault rectification requirements are determined to assist in planning the repair

3. Dismantle and inspect electrical/electro-mechanical components

3.1. Component parts are dismantled in accordance with maintenance manuals

3.2. Component parts are assessed for serviceability in accordance with the relevant maintenance documentation

3.3. Parts requiring specialist repair are tagged and repair instructions are accurately specified

3.4. Parts lists are compiled and processed in accordance with standard enterprise procedure

4. Repair and/or modify electrical/electro-mechanical components

4.1. Component parts are repaired or replaced in accordance with the relevant maintenance documentation

4.2. Modification of components or parts is undertaken, where required, by relevant manufacturer's bulletins or procedures

5. Assemble, test and adjust electrical/electro-mechanical components

5.1. Assembly of component parts is carried out within specified tolerances and in accordance with the appropriate maintenance documents

5.2. Components are adjusted or calibrated to operate within prescribed specifications

5.3. Finished components are tagged, sealed and packaged in accordance with specified procedures

5.4. Required maintenance documentation and modification records are completed and processed in accordance with standard enterprise procedures

REQUIRED SKILLS AND KNOWLEDGE 

This section describes the skills and knowledge required for this unit.

Required skills 

Look for evidence that confirms skills in:

• applying relevant occupational health and safety (OHS) practices
• using approved repair/overhaul procedures and processes relating to electrical and electro-mechanical components
• recognising the serviceability state and repair or overhaul requirements for:

• AC and DC motors, generators and alternators
• static inverters
• transformer rectifier units (TRU)
• regulators/control units
• actuators
• solenoids and shutoff valves
• engine ignition/starting components

• applying logic processes, and using test equipment and appropriate wiring diagrams and manuals to isolate component faults
• performing component testing to isolate/confirm component fault and assess post repair/overhaul serviceability
• correctly disassembling, inspecting component parts, repairing/replacing/modifying component parts and assembling components listed above

Required knowledge 

Look for evidence that confirms knowledge of:

• component and system operation
• explaining the basic function and operation of components listed below to enable testing for fault isolation/confirmation, to determine repair or overhaul requirements, and serviceability status post repair or overhaul:

• AC and DC motors, generators and alternators
• static inverters
• TRU
• regulators/control units
• actuators
• solenoids and shutoff valves
• engine ignition/starting components

• explaining basic principles/functions, relating to components listed above and associated with:

• AC and DC power generation
• circuit theory
• analogue fundamentals
• electro-mechanical interface

EVIDENCE GUIDE 

The Evidence Guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment 

A person who demonstrates competency in this unit must be able to repair and overhaul a range of electrical and electro-mechanical components in accordance with applicable maintenance manuals and regulatory/industry procedures while observing all relevant safety precautions.

Critical aspects for assessment and evidence required to demonstrate competency in this unit 

The underlying skills inherent in this unit should be transferable across a range of repair or overhaul applications associated with electrical/electro-mechanical components listed in the Range Statement. It is essential that the maintenance procedures are interpreted and applied to ensure quality and safety standards are fully observed, understood and complied with. Capability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical.

Evidence of transferability of skills and knowledge related to repair is essential. This may be demonstrated through application across a range of aircraft electrical/electro-mechanical components. Ability to assess component serviceability and interpret parts requirements will be necessary to supplement the required evidence. The application of testing procedures should also clearly indicate knowledge of system operation before undertaking any action. Knowledge of system operation and the relationship of individual components will be necessary to supplement evidence of ability to troubleshoot component faults. 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 Group 1 to 4 as listed in the Range Statement. This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry .

Context of and specific resources for assessment 

Competency should be assessed in the work environment, or simulated work environment, using tools and equipment specified in maintenance documentation. It is also expected that general and special purpose tools and test equipment would be used where appropriate.

Method of assessment 

Guidance information for assessment 

RANGE STATEMENT 

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Note 

Range statements listed below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide

Electrical /electro-mechanical components 

Components may include:

1. Motors, generators and alternators

2. Static inverters, TRU and regulators

3. Actuators, solenoids and shutoff valves

4. Bus bars, circuit breakers, connectors, electrical looms and fans

Application 

Application of this unit may relate to:

• scheduled or unscheduled maintenance
• individual or team-related activities
• complex testing and adjusting of components, and where this is undertaken, may be carried out under supervision at the appropriate level

Procedures and requirements 

Procedures and requirements refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

Unit sector 

Component repair and overhaul

Competency field 

Aviation maintenance

Co-requisite units 

MEA201B

Remove and install miscellaneous aircraft electrical hardware

MEA260B

Use electrical test equipment