103 Aircraft Maintenance: Avionics

103305 Remove and install aircraft electronic system components

101403 Minor repair for aircraft electrical components or parts

(ก) ความต้องการด้านทักษะ

See Appendix A

(ข) ความต้องการด้านความรู้

See Appendix A

(a) Performance Evidence

          Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria under the specified conditions of assessment, and must include:

          • applying relevant WHS practices

          • using approved maintenance documentation and aircraft publications relating to the automatic flight control and data system being maintained

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

          • flight director components and interface

          • flight control components and interface

          • flight data recorders and interface

          • applying logic processes, taking and interpreting system measurements, using test equipment and appropriate wiring diagrams and manuals to accurately and effectively isolate malfunctions in the above systems

          • testing systems to isolate system malfunctions and assess post-maintenance serviceability.

          It is essential that system testing procedures, cleanliness requirements and safety precautions applicable to the automatic flight control system being maintained are fully observed, understood and complied with. Ability 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) is critical.

          Evidence of transferability of skills and knowledge related to inspection, testing and troubleshooting is essential. This is to be demonstrated through application across a range of rotary wing automatic flight control systems and components listed in the Assessment Description and Procedure.

(b) Knowledge Evidence

          Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria under the specified conditions of assessment, and include:

          • component attachment methods

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

          • flight director components and interface

          • flight control components and interface

          • flight data recorders and interface

          • explaining basic principles/functions relating to the above systems and associated with:

          • basic AC and DC circuit theory

          • digital fundamentals

          • analogue fundamentals

          • rotary wing flight theory

          • inner and outer loop control

          • rotary wing flight control system (mechanical, hydraulic and electro-mechanical types, trim and stabilization)

          • flight control modes/channels

          • WHS requirements

          • system and component maintenance requirements and troubleshooting procedures

          • relevant maintenance manuals.

          This part allows for different work environments and conditions that may affect performance. Essential 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.

          Automatic flight control systems include:

          • Flight director indicators, computers, control boxes and interfaces with other systems

          • Flight controls servo actuators (roll, pitch, yaw and trim) computers and sensors

          • Autopilot system computers, sensors (gyros and/or accelerometers), controllers, mode selectors and system interface, control wheel steering (CWS), disconnect, go around and trim switches

          Procedures and requirements include:  

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

          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.

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

          • 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 before undertaking any action. The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards.

          • An individual cannot be evaluated 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 at least one (1) item from each of the following groups:

          • flight director indicators, computers, control boxes and interfaces with other systems

          • flight controls servo actuators (roll, pitch, yaw and trim) computers and sensors

          • autopilot system computers, sensors (gyros and/or accelerometers), controllers, mode selectors and system interface, CWS, disconnect, go around and trim switches.

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