7232 Aircraft engine mechanics and fitters  

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

(ก) ความต้องการด้านทักษะ

See Appendix A

(ข) ความต้องการด้านความรู้

See Appendix A

(a) Performance Evidence

      Evidence required to express competency in this unit must be related to and fulfil all of the requirements of the elements and performance criteria under the indicated conditions of assessment, and must include:

•    Applying relevant WHS practices.

•    Using approved maintenance documentation and aircraft publications relating to the electrical system being maintained.

•    Recognition of system and electrical component defects/external damage, correct installation, connection of plugs, terminations, and attaching hardware (including cabling/harnesses) and security in:

•    AC and DC power generation systems, including regulation, distribution, control andcooling.

•    Battery installations.

•    Flight control and/or electro-hydraulic systems.

•    Engine ignition, starting, fuel distribution and control systems.

•    Lnternal/external lighting systems, including controls.

•    Landing gear systems.

•    Anti-skid braking systems.

•    Auxiliary systems, including ice/rain protection, fire detection, environmental control and pressurisation, water and waste, doors, propeller control, equipment and.

•    Furnishings.

•    Equipment cooling and ventilation systems.

•    Master caution and warning systems.

•    Applying logic processes, taking and interpreting electrical measurements, and using test equipment and appropriate wiring diagrams and manuals to isolate electrical system malfunctions of the above components and systems.

•    Performing system functional tests and checks to isolate system faults and assess post-maintenance serviceability. 

    It is crucial that the system testing procedures, requirements for cleanliness and safety precautions relevant to the maintained electrical system are fully perceived, understood and complied with.

    It is essential to be able to interpret inspection procedures and specifications (allowable limits) and apply them in practice across a range of inspection, testing and troubleshooting applications (including the timely involvement of supervisors or other trades).  

    Transferability evidence of skills and knowledge related to testing and troubleshooting is important. This is to be demonstrated through application across a range of aircraft electrical systems and components as specified in the Assessment Conditions.



(b) Knowledge Evidence

      Evidence required to express competency in this unit must be related to and fulfil all of the requirements of the elements and performance criteria and include knowledge of:

•    Component attachment methods.

•    Connection of hardware.

•    Explaining the basic layout (block diagram level), function and operation of:

•    AC and DC power generation systems, including regulation, distribution, control and cooling.

•    Battery installations.

•    Flight control and/or electro-hydraulic systems.

•    Engine ignition, starting, fuel distribution and control systems.

•    Lnternal/external lighting systems, including controls.

•    Landing gear systems.

•    Anti-skid braking systems.

•    Auxiliary systems, including ice/rain protection, fire detection, environmental control and pressurisation, water and waste, doors, propeller control, equipment and furnishings.

•    Equipment cooling and ventilation systems.

Mmaster caution and warning systems.

•    Explaining basic principles/functions, relating to systems listed above and associated with:

•    Basic AC and DC circuit theory.

•    Digital fundamentals.

•    Analogue fundamentals.

•    AC and DC generator characteristics.

•    Single and polyphase AC motors and DC motors.

•    Rotary and static inverters.

•    Air cycle air conditioning.

•    Electrical sensing and transmitting devices.

•    WHS requirements applicable to the maintenance of aircraft electrical systems, including gas turbine engine high-energy ignition units.

•    Electrical system maintenance requirements and troubleshooting procedures.

•    Relevant maintenance manuals.

•    Relevant regulatory requirements and standard procedures.



(c) Assessment recommendation

      N/A

(a) Recommendation

      Different working environments and conditions that may affect performance are admissible in this field. Crucial operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.



(b) Description

      Electrical systems and components include:

•    All related electrical hardware, looms and cables.

•    Alternating current (AC) and/or direct current (DC) power.

•    Generation, regulation and distribution systems.

•    Rotary and static inverters and transformer rectifier (TR).

•    Units.

•    Air cycle air conditioning and pressurisation systems.

•    Flight and engine control systems.

•    Ignition and starting systems.

•    Fire/smoke detection and extinguishing.

•    Lighting (internal and external).

•    Master and caution warning systems.

•    Equipment cooling and ventilation.

•    Equipment and furnishing.

•    Position indicating systems..

•    Fuel storage and distribution.

•    Landing gear indication and anti-skid.

•    Main batteries and battery bus ties/interlocks.

•    Propeller control systems (where applicable to the enterprise).

•    Ice and rain protection (where applicable to the enterprise).

•    Wastewater (where applicable to the enterprise).

Procedures and requirements include:

•    Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise.

 

•    The assessment are based on combination of paper exams, interviewing, and practical demonstrations depending on the assessors’ judgement.

•    Competency should be assessed in the workplace or simulated workplace using tools and equipment stated in the maintenance manuals. It is also expected that applicable general and special purpose tools, and test and ground support equipment would be used where appropriate.

•    Before undertaking any action, 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 aircraft/system fault-finding guide. The work plan should consider 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 and performance criteria of the unit of competency are being achieved under routine supervision on a system and at least one (1) item from each of the following groups, including all related electrical hardware, looms and cables:

•    AC and/or DC power generation, regulation and distribution systems.

•    Rotary and static inverters and TR units.

•    Air cycle air conditioning and pressurisation systems.

•    Flight and engine control systems.

•    Ignition and starting systems.

•    Fire/smoke detection and extinguishing.

•    Lighting (internal and external).

•    Master and caution warning systems.

•    Equipment cooling and ventilation.

•    Equipment and furnishing.

•    Position indicating systems.

•    Fuel storage and distribution.

•    Landing gear indication and anti-skid.

•    Main batteries and battery bus ties/interlocks (including a battery check).

•    Propeller control systems (may be omitted if not applicable to the enterprise).

•    Ice and rain protection (may be omitted if not applicable to the enterprise).

•    Wastewater (may be omitted if not applicable to the enterprise).

    This shall be proven via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry Evidence Guide.