7232 Aircraft engine mechanics and fitters  

101309    Remove and install miscellaneous aircraft electrical hardware/components 

101403    Minor repair for aircraft electrical components or parts 

(ก) ความต้องการด้านทักษะ

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(ข) ความต้องการด้านความรู้

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(a) Performance Evidence

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

•    Applying relevant WHS procedures, including the selection and use of applicable PPE and MSDS. 

•    Complying with regulatory requirements regarding the de-gassing of vapour cycle air conditioning systems.

•    Using relevant maintenance documentation and aircraft manuals. 

•    Recognising external and internal signs of defects in vapour cycle air conditioning systems and system components through visual/physical inspection. 

•    Testing of vapour cycle air conditioning system operation, be able to operate systems and leak testing equipment, monitor indications and recognise correct function. 

•    Using specialist equipment to evacuate and recharge refrigerant. 

•    Using fault diagnosis guides and equivalent data to accurately and efficiently troubleshoot the causes of unserviceabilities in vapour cycle air conditioning systems, clearly recording details and identifying the required rectification actions. 

•    Correctly removing and installing vapour cycle air conditioning system electrical and mechanical components. 

    The inherent underlying skills to this unit should be transferable across a range of inspection, testing, and troubleshooting tasks removal and installation (including the timely intervention of supervisor or other trades) associated with the systems and components of air conditioning steam cycle. It is essential that the testing procedures system takes into account all safety precautions associated with the operation and system testing vapor cycle air conditioning, and regulations related to the evacuation and recharge refrigerant is strictly observed. Ability to interpret procedures and specifications (allowable limits) inspection and apply them in practice is essential.

    This is demonstrated by the application through a series of air conditioning systems steam cycle of the aircraft.



(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: 

•    WHS procedures associated with vapour cycle air conditioning system maintenance, including the selection and use of PPE. 

•    How to obtain applicable MSDS. 

•    Regulations applying to the evacuation and recharging of refrigerant. 

•    Fault diagnosis techniques. 

•    Vapour cycle air conditioning system layout and operation. 

•    Vapour cycle air conditioning system electrical and mechanical component operation: 

•    Compressor .

•    Condenser. 

•    Receiver dryer. 

•    Thermal expansion valve. 

•    Evaporator. 

•    Magnetic clutch and drive system: 

•    Belt. 

•    Power takeoff. 

•    Electric motor. 

•    Hydraulic motor.

•    Pneumatic. 

•    Condenser extension and retraction system. 

•    Blower. 

•    Throttle system shutoff. 

•    Temperature control system. 

•    Refrigerant used in aircraft vapour cycle air conditioning systems. 

•    Lubricants used in compressors. 

•    Equipment used to test systems and evacuate and recharge refrigerant.

•    Procedures for evacuating and recharging system refrigerant. 

•    Refrigerant leak testing techniques and equipment. 

•    Removal and installation procedures for vapour cycle air conditioning system components. 

•    Vapour cycle air conditioning system maintenance requirements. 

•    Relevant maintenance manuals. 

•    Relevant regulatory requirements and standard procedures. 



(c) Assessment   recommendation

        N/A

Assessmen  methods

        N/A

(a) Recommendation

      This field allows different environments and working conditions that can affect the 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.

Vapour cycle air conditioning systems include:     

•    Refrigeration system compressor, condenser, receiver dryer, thermal expansion valve and evaporator 

•    Magnetic clutch and drive system (belt, power take-off, electric motor, hydraulic motor or pneumatic as applicable) 

•    Condenser extensionand retraction system

•    Blower

•    Throttle system shutoff

•    Temperature control system 

Procedures and requirements include:     

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



(b) Description

       N/A

• The assessment are based on combination of paper exams, interviewing, and practical demonstrations depending on the assessors’ judgement.Competence should be assessed in the work environment or simulated work environment using tools and equipment specified in the maintenance documentation. It is also expected that general purpose tools and test equipment found in most routine situations would be used if necessary.

 • The application of test procedures and functional checks must show basic knowledge of the operation and regulation relating to the refrigerant fluid system. Vapor cycle air conditioning basic knowledge of system operation, the relationship of the individual components and the links with other systems will be needed to complete the proof of the ability to carry out checks of the engine control system and troubleshoot the system within aircraft / research guide of system failures before undertaking any action. The work plan should take account of safety and quality requirements in compliance with industry and regulatory standards.

• The following conditions assessment are the requirements of regulators and stakeholders and maintenance must be strictly observed.

• A person can not be assessed as competent until it can be demonstrated to the satisfaction of the assessor in the workplace that the relevant elements and performance criteria of competence unit are achieved under the supervision routine on a system and at least one (1) each of the following components:

• Compressor refrigeration system, condenser, receiver dryer, a thermal expansion valve and the evaporator.

• Magnetic clutch and drive system (belt, PTO, electric, hydraulic or pneumatic motor as appropriate).

• Condenser extension and retraction system.

• Blower.

• Stop throttle system.

• Temperature control system.

• This are established through the records in the newspaper industry experience and yield or, where appropriate, a guide on evidence of equivalent industry (for details refer to the Companion Volume Assessment Guidelines ).