7232 Aircraft engine mechanics and fitters  

101314 Remove and install aircraft pneumatic system components

(ก) ความต้องการด้านทักษะ

See Appendix A

(ข) ความต้องการด้านความรู้

See Appendix A

(a) Performance Evidence

     Evidence required to express competency in this unit must be related to and fulfil all of the requirements of the elements and performance criteria under the indicated conditions of assessment, and must include:

• Using hand skills and tools in the inspection, adjustment and troubleshooting of pneumatic systems.

• Using hand skills and tools in the inspection, adjustment and troubleshooting of pneumatic system components.

• Using maintenance manuals to prepare the aircraft for inspection, testing and troubleshooting of pneumatic systems and components.

• Effectively using maintenance documentation and relevant fault diagnosis guides in the troubleshooting process.

• Recognising external defects in pneumatic systems and components.

• Applying standard procedures.

• Observing all relevant WHS practices.

   The fundamental skills inherent in this unit should be transferable across a range of inspection, testing and troubleshooting tasks (including the timely involvement of supervisors or other trades) associated with aircraft pneumatic systems and their components. It is essential that system testing procedures consider all safety precautions associated with piston engine system operation, and that awareness be demonstrated of dual inspection requirements associated with the system being maintained, especially where system operation/switching interrelates to other systems being maintained.

    It is essential to be able to interpret inspection procedures and specifications (allowable limits) and apply them in practice. This shall be demonstrated through application across a range of systems as specified in the Assessment Conditions.



(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 knowledge of:

• Standard trade practices relating to tool usage and installation/securing of aircraft hardware.

• Pneumatic system:

• Layout.

• Operation and characteristics.

• Component operation and construction.

• Electrical and instrument system interfaces.

• How to configure the aircraft for inspection, testing and troubleshooting of pneumatic systems and components.

• Pneumatic system maintenance requirements and troubleshooting procedures.

• WHS procedures relating to pneumatic systems and components.

• Relevant maintenance manuals.

• Relevant regulatory requirements and standard procedures, including those relating to the handling and control of halon fire-extinguishers.



(c) Assessment recommendation

      N/A

(a) Recommendation

      Different working environments and conditions that may affect performance are admissible in this field. Crucial 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.



(b) Description

     Pneumatic systems include:

• De-icing.

• Air cycle air conditioning.

• Pressurisation.

• Fire-extinguishing.

   Components of pneumatic systems include:

• Filters, valves, pumps, motors, actuators and regulators.

• Gauges (direct reading), temperature sensors, pressurisation controllers and temperature controllers.

• Heat exchangers, pressure vessels, condensers, compressors, expansion turbines and humidifiers.

• Rigid and flexible pipelines, hoses and fittings.

• Ducting.

   Electrical interface includes:

• Associated electrical loom terminations and/or plugs.

   Procedures and requirements include:

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

• The assessment are based on combination of paper exams, interviewing, and practical demonstrations depending on the assessors’ judgement.

• Competency should be assessed in the work environment or simulated work environment, using procedures, tools and equipment stated in maintenance documentation. It is also expected that applicable general-purpose tools, test and ground support equipment found in most routine situations would be used where appropriate. 

• The level of troubleshooting is restrictedto its application to the use of fault diagnosis guides or other similar information.

• Before undertaking any action, 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. The work plan should                consider applicable safety and quality requirements according to 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 this unit of competency are being achieved under routine supervision on each type of system:

• De-icing.

• Air cycle air conditioning.

• Pressurisation.

• Fire-extinguishingand on at least one (1) component from each of the following groups:

• Fi00lters, valves, pumps, motors, actuators and regulators.

• Gauges (direct reading), temperature sensors, pressurisation controllers and temperature controllers.

• Heat exchangers, pressure vessels, condensers, compressors, expansion turbines and humidifiers.

• Rigid and flexible pipelines, hoses and fittingsducting.

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