Aircraft Mechanics: Avionics 

(ก) ความต้องการด้านทักษะ

See Appendix A

(ข) ความต้องการด้านความรู้

See Appendix A

(a) Performance Evidence

          recognition system components and defects / external damage, correct installation, connection plugs, terminals, attaching hardware (including cabling / harnesses) and safety:

          • DC power generation systems, including regulation, distribution and control

          • battery installations

          • piston engine ignition and starting systems and components:

          • magnetos or coils

          • starter motors

          • ignition switches/start switches

          • ignition harnesses

          • low tension wiring

          • spark plugs

          • auxiliary starting devices

          • gas turbine engine ignition and starting systems (where applicable to the enterprise):

          • starter motors and starter/generators

          • high energy ignition units

          • control units

          • switches

          • batteries and associated mounting equipment, including related anti-vibration aids

          • motors and actuators in DC electrical systems

          • internal/external lighting systems, including controls

          • flap systems

          • landing gear systems

          • applying logic processes, taking and interpreting electrical measurements, and 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 post-maintenance serviceability

          applying relevant WHS practices, including those relating to gas turbine engine high energy ignition units.

          It is essential that the system test procedures, cleaning requirements and safety measures applicable to electrical system are maintained are fully observed, understood and respected. Ability to interpret procedures and specifications (allowable limits) inspection and apply them in practice through a series of inspections, testing and troubleshooting applications (including the appropriate involvement of supervisors and other trades) is critical. Evidence of transferability of skills and knowledge related to the inspection, testing and troubleshooting is essential. This is to be demonstrated by the application in a wide range of aircraft electrical systems and components listed in the range of conditions.

(b) Knowledge Evidence

          Evidence required to demonstrate competency in this unit should be of interest and meet all requirements of the elements and performance criteria and include basic knowledge of:

          • DC circuit theory

          • electrical system maintenance requirements and troubleshooting procedures

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

          • single generator DC power generation and distribution systems and components, including:

          • DC generators

          • alternator/rectifier generators

          • starter/generators

          • voltage regulators

          • circuit protection devices

          • bus bars

          • piston engine ignition and starting systems and components, including:

          • magnetos or coils

          • starter motors

          • ignition switches/start switches

          • ignition harnesses

          • low tension wiring

          • spark plugs

          • auxiliary starting devices

          • gas turbine igniter and starting systems and components, including specific WHS precautions:

          • starter motors and starter/generators

          • high energy ignition units

          • control units

          • switches

          • landing gear and flap systems and components, including:

          • motors

          • actuators

          • selector switches

          • micro switches

          • internal and external lighting systems and components

          • batteries and associated mounting equipment, including related anti-vibration aids

          • relevant WHS practices

          • relevant maintenance manuals

          • relevant regulatory requirements and standard procedures.

(c) Assessment recommendation

          N/A

Assessment  methods

(a) Recommendation

          This field allows different environments and working conditions that can affect the performance. the essential operating conditions that may be present (depending on the work situation, accessibility requirements, the candidate of the topic, and local industry and regional contexts) are included.

          DC electrical systems/components include:

          DC generators and alternator/rectifier generators, and components of related single generator regulation and distribution systems

          • Piston engine ignition and starting system components

          • Specific components of DC electrical systems, such as flaps and landing gear, including related motors and actuators

          • Gas turbine engine igniter and starting systems and components (where applicable to the enterprise)

          • Aircraft lighting

          • Aircraft main batteries

          Procedures and requirements include:

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

(b) Description

          N/A

          • The assessment are composed of paper exams , interviews, and practical demonstrations, which the paper exam is the main testing. The selection of interviews and practical demonstrations are depending on the assessors’ judgment. Competition should be assessed in the workplace or place of work simulated using tools and equipment specified in the maintenance manuals. It is also expected that the tools of general and special purpose test equipment and ground support would be used where appropriate.

          • The application of the test procedures should clearly indicate the knowledge of system operation, the relationship of the individual components and linkages with other systems (if applicable) within the limits of the failure of the aircraft / search system guidance before taking any action. The work plan should take into account the applicable safety requirements and quality in accordance with industry and regulatory standards.

          • A person can not be assessed as competent until they can demonstrate to the satisfaction of the assessor workplace relevant elements and performance criteria of competence unit is carried out under routine monitoring in power looms, cables and connecting hardware, and each set in the range of conditions and at least one (1) main / online replaceable component unit (LRU), in each case as follows:

          • DC generators and generators alternator / rectifier current, and control system components single generator and related distribution

          • system components engine ignition and starting piston

          • specific components of electrical current systems, such as flaps and landing gear, including motors and actuators

          • Lighter gas turbine engine and commissioning of systems and components (can be omitted if not applicable to the company)

          • Lighting aircraft

          • The main aircraft batteries (competition can be demonstrated by conducting a review of the battery).

          • This is done through the records in the register of industrial experience and achievement or, where appropriate, a guide equivalent Industry Evidence (for details see the companion volume Assessment Guidelines). 

          • people who have already reached evaluated Keep MEA274 light aircraft electrical systems and core components have met the requirements of this unit with respect to the common range of varying conditions. The Registry of industry experience and accomplishments related records Keep MEA274 be accepted as meeting the requirements of evidence for this unit in public areas apply the basic light aircraft electrical systems and components.