103 Aircraft Mechanics: Avionics 

103303 Remove and install advanced aircraft general instrument 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 instrument 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:

          • pitot/static systems and associated instruments and systems

          • flight instruments

          • GPWS and FDR

          • stall warning, angle of attack and stall avoidance systems

          • navigation systems (compasses and AHRS)

           •  pressure measurement, position indicators, engine/auxiliary system indication systems, including fuel quantity and flow.

          It is essential that inspection procedures, cleanliness requirements and safety precautions applicable to the instrument system being maintained are fully observed, understood and complied with. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice (including the timely involvement of supervisors or other trades) is critical.

          Evidence of transferability of skills and knowledge related to inspection is essential. This is to be demonstrated through application across a range of aircraft instrument 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 and include basic knowledge of:

          • component attachment methods

          • connection of hardware

          • instrument system maintenance requirements

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

          • flight instruments, including:

          • ASIs

          • VSIs

          • air data systems and components

          • machmeters

          • altimeters, including servo and encoding altimeters

          • turn and slip indicators

          • AHs

          • DGs

          • angle of attack and stall warning/avoidance systems

          • pitot/static systems

          • navigation systems:

          • direct reading compasses

          • gyro compasses

          • AHRS

          • GPWS

          • turbine engine instruments, including:

          • temperature and pressure, including thermocouples, sensors and transmitters

          • speed, including mechanical and electric tachometers

          • thrust, including fan, propeller and jet

          • torque

          • fuel flow

          • vibration

          • auxiliary transmitter/indicator measuring systems, including:

          • hydraulic pressure and temperature

          • pneumatic pressure

          • transmission oil pressure and temperature

          • fuel remaining/used

          • fuel quantity indication

          • component position (e.g. doors, flaps, speed brakes and landing gear)

          • FDR systems

          • relevant WHS practices

          • instrument system maintenance requirements

          • relevant maintenance manuals

          • relevant regulatory requirements and standard procedures

          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.

          Instrument systems and components include:

          • Flight instruments, including pitot/static systems, airspeed indicators (ASIs), vertical speed indicators (VSIs), altimeters, altitude alerting and reporting, turn and bank and slip/turn coordinators, directional gyros (DGs) and artificial horizons (AHs) (air and electrically driven)

          • Machmeters, air data systems, angle of attack, stall warning and avoidance systems

          • Flight data recorders (FDRs)

          • Engine indication systems

          • Magnetic compasses and attitude and heading reference system (AHRS)

          • Miscellaneous instrument systems, including pressure measurement, fuel quantity, fuel flow, position indication, voltage and frequency, current and power

          • Ground proximity warning system (GPWS)

          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 applicable general and special purpose tools, and test and ground support equipment would be used where appropriate. 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 a system and at least (1) one major system component/line replacement unit (LRU) from each of the following groups:

          • flight instruments, including pitot/static systems, ASIs, VSIs, altimeters, altitude alerting and reporting, turn and bank and slip/turn coordinators, DGs and AHs (air and electrically driven)

          • machmeters, air data systems, angle of attack, stall warning and avoidance systems

          • FDRs

          • engine indication systems

          • magnetic compasses and AHRS

          • miscellaneous instrument systems, including pressure measurement, fuel quantity, fuel flow, position indication, voltage and frequency, current and power

          • GPWS.

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