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Elements and Performance Criteria

1. Inspect basic aircraft electrical systems and components
   • Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify specific inspection requirements
   • Isolation tags are checked and aircraft configured for safe system inspection and operation in accordance with the applicable maintenance manual
   • DC electrical system is visually or physically checked for external signs of defects in accordance with applicable maintenance manual
   • Defects are correctly identified and reported
2. Test/adjust basic aircraft electrical systems
   • Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation
   • Electrical system is functionally tested, in accordance with maintenance manual, for evidence of serviceability or malfunction
   • System calibration or adjustments are performed in accordance with maintenance manual, as appropriate
3. Troubleshoot basic aircraft electrical systems
   • Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination
   • Maintenance manual fault diagnosis guides and logic processes are used to ensure efficient and accurate troubleshooting
   • Specialist advice is obtained, where required, to assist with the troubleshooting process
   • System faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required, and in accordance with standard enterprise procedures
   • Rectification requirements are determined
4. Remove and install basic aircraft electrical system components
   • System is rendered safe and prepared in accordance with the applicable maintenance manual and isolation tags are fitted where necessary to ensure personnel safety
   • Electrical component removal is carried out in accordance with the applicable maintenance manual
   • Required maintenance documentation is completed and processed in accordance with standard enterprise procedures
   • Removed components are tagged and packaged in accordance with specified procedures
   • Electrical components to be installed are checked to confirm correct part numbers, modification status, serviceability and shelf life
   • Physical installation of electrical components is performed in accordance with the applicable maintenance manual, ensuring appropriate adjustment/alignment with mechanical interface is carried out
   • System is reinstated to correct operational condition in preparation for testing, as necessary

Required Skills

Required skills

Look for evidence that confirms skills in applying relevant OHS practices including those relating to gas turbine engine high energy ignition units using approved maintenance documentation and aircraft publications relating to DC electrical systems identifyinglocating DC power generation regulation distribution and control systems and components generators and startergenerators regulators bus bars circuit breakers and fuses wiring piston engine ignition and starting systems and components magnetos or coils starter motors ignition switchesstart switches ignition harnesses low tension wiring spark plugs auxiliary starting devices gas turbine engine ignition and starting systems starter motors and startergenerators high energy ignition units control units switches batteries and associated mounting equipment including related antivibration aids motors and actuators in basic DC electrical systems correctly connecting DC generators alternatorrectifier generators and startergenerators recognising system and component defectsexternal damage correct installation connection of plugs terminations attaching hardware including cablingharnesses and security in DC power generation systems including regulation distribution and control battery installations piston engine ignition and starting systems gas turbine engine ignition and starting systems where applicable to the enterprise internalexternal lighting systems including controls motors and actuators in basic DC electrical systems applying logic processes taking and interpreting electrical measurements using test equipment and appropriate wiring diagrams and manuals to isolate malfunctions in the above systems performing system functional tests and checks to isolate system faults and assess postmaintenance serviceability

Required knowledge

Look for evidence that confirms knowledge of component attachment methods connection of hardware and plugs DC electrical principles properties of permanent magnets precautions for the care and storage of permanent magnets properties of electromagnets primary and secondary cells aircraft battery types construction care and safety resistor characteristics fuses and circuit breakers fundamental DC circuits inductive circuits capacitive circuits basic faultfinding principles general construction operating characteristics and applications for aircraft DC generators alternatorrectifier generators DC motors including starter motors startergenerators DC actuators linear and rotary gas turbine high energy ignition system components and related safety precautions lighting systems the basic layout block diagram level function and operation of the systems listed in the Range Statement electrical system maintenance requirements and troubleshooting procedures relevant OHS practices including those relating to gas turbine engine high energy ignition units relevant maintenance manuals relevant regulatory requirements and standard procedures

Evidence Required

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 inspect test and troubleshoot basic DC electrical systems and remove and install components including looms cables and connection hardware 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 inspection testing and troubleshooting applications including the timely involvement of supervisors or other trades associated with basic aircraft DC electrical systems and components It is essential that system testing procedures 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 Ability to interpret inspection procedures and specifications allowable limits and apply them in practice is critical Evidence of transferability of skills and knowledge related to inspection testing and troubleshooting and component removal and installation is essential This is to be demonstrated through application across a range of aircraft electrical systems and components listed in the Range Statement The application of testing procedures should clearly indicate knowledge of system operation the relationship of individual components and the links with other systems if applicable within the limits of the aircraftsystem faultfinding guide 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 electrical looms cables and connection hardware and on each system in Range Statement Groups to and on at least one major componentLRU in each case For Group competency may be demonstrated through the performance of a battery check Component removal and installation competencies are to be demonstrated on at least one component from each of groups to This shall be established via the 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 or simulated work environment using tools and equipment specified in maintenance documentation It is also expected that general purpose tools and test equipment found in most routine situations would be used where appropriate
Method of assessment
Guidance information for assessment

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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
Applicable electrical systems	Electrical systems may include: 1. DC power generation, regulation and distribution systems 2. Piston engine and gas turbine engine ignition and starting systems (as applicable to the enterprise) 3. DC electrical systems, such as flaps, including related motors and actuators 4. Aircraft lighting 5. Aircraft main battery
Troubleshooting	Troubleshooting involves the use of fault-finding charts or similar, to line replacement level
Applicable electrical components	Electrical components include: 6. DC generators, and alternator/rectifier generators, and components of related single generator regulation and distribution systems 7. Motors 8. Actuators 9. Piston engine ignition and starting system components 10. Aircraft batteries 11. Aircraft lighting components, such as bulbs, lenses, switches and rheostats
	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

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