103 Aircraft Mechanics: Avionics

101309 Remove and install miscellaneous aircraft electrical hardware/components

(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 include:

          • identifying/locating:

          • DC power regulation, distribution and control systems and components, i.e. regulators and bus bars

          • AC power regulation, distribution and control systems and components, i.e. generator control units

          • various types of inverters and transformer rectifier units

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

          • batteries (lead acid and nickel cadmium) and associated mounting equipment including related anti-vibration aids and battery temperature monitoring systems

          • flight control servo actuating devices, i.e. AC and DC electro-mechanical, electro-pneumatic, electro-hydraulic, duplex servomotors, power control units and trim control devices

          • electrical components of aircraft systems, such as air cycle air conditioning, anti-icing and de-icing, landing gear, anti-skid, flight control, master and central warning, fuel storage and distribution, external and internal lighting, fire warning and extinguishing, and engine/propeller control (where applicable to the enterprise)

          • correctly connecting:

          • DC generators

          • star or delta alternators to star and delta loads

          • starter generators

          • AC motors

          • polyphase motors

          • applying relevant WHS practices. It is essential that 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. Evidence of transferability of skills and knowledge related to removal and installation is essential. This is to be demonstrated by application across a range of aircraft major electrical system components encompassing electrical with mechanical interface and installations that require alignment and/or adjustment (mechanical or electrical).

(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 and plugs

          • relevant WHS practices

          • the use of approved maintenance documentation and aircraft publications relating to AC and DC electrical systems

          • properties of permanent magnets

          • precautions for the care and storage of permanent magnets

          • bonding of aircraft components and lightning protection

          • general construction, operating characteristics and applications for aircraft:

          • generators

          • alternators

          • AC and DC motors

          • transformer rectifier units

          • rotary and static inverters

          • batteries

          • linear and rotary actuators

          • relevant maintenance manuals

          • relevant regulatory requirements and standard procedures

          • environmental protection requirements relating to Halon fire extinguishers (e.g. Bromochlorodifluoromethane (BCF)

          This field 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.

          Electrical system components include:

          DC and AC power generation and distribution system components, including generators and related multi-sourced DC power generation, starter generators alternators and regulation, and control and distribution system components

          Transformer rectifier units and/or inverters

          Batteries and related bus tie or interlock system components and battery temperature monitoring systems

          Motors and actuators

          Components of gas turbine and/or piston engine ignition and starting systems (where applicable to the enterprise)

          External/internal lights

          Electrical components of specific electrical systems, such as air cycle air conditioning, combustion heaters, equipment cooling, anti-icing and de-icing, landing gear, anti-skid, flight control, master and central warning, fuel storage and distribution, fire warning and extinguishing, and engine/propeller control (where applicable to the enterprise)

          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 work environment or simulated work environment, using tools and equipment specified in maintenance manuals. It is also expected that general-purpose tools, test and ground support equipment found in most routine maintenance situations would be used where appropriate.

          • An understanding of the attachment methods, connection of hardware, and the need for adjustment or rigging and system operation as they relate to the work must be demonstrated 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 and performance criteria of the unit of competency are being achieved under routine supervision on at least one (1) component from:

          • DC and AC power generation and distribution system components, including generators and related multi-sourced DC power generation, starter generators alternators and regulation, and control and distribution system components

          • transformer rectifier units and/or inverters

          • batteries and related bus tie or interlock system components and battery temperature monitoring systems

          • motors and actuators

          • components of gas turbine and/or piston engine ignition and starting systems (may be omitted where not applicable to the enterprise)

          • external/internal lights

          • and on three (3) components that are applicable to the enterprise from:

          • electrical components of specific electrical systems, such as air cycle air conditioning, combustion heaters, equipment cooling, anti-icing and de-icing, landing gear, anti-skid, flight control, master and central warning, fuel storage and distribution, fire warning and extinguishing and engine/propeller control.

          • This shall be established via records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry Evidence Guide (for details refer to the Companion Volume Assessment Guidelines).