101 Aircraft Mechanics: Airplane

101301 Interpret work health and safety practices in aviation maintenance

101302 Apply quality standards applicable to aviation maintenance processes

101303 Interpret and use aviation maintenance industry manuals and specifications

101304 Complete aviation maintenance industry documentation

101305 Perform basic hand skills, standard trade practices and fundamentals in aviation maintenance

(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, tools and test equipment in the testing, adjustment and troubleshooting of airframe systems and components, including airframe system component removal and installation

          • recognising system and component defects/external damage, correct installation and security for the range of airframe systems listed in the Range of Conditions

          • removing, installing and rigging of flight controls

          • checking flight control mass balance

          • performing system functional tests and checks to isolate system faults and assess post-maintenance serviceability

          • effectively using maintenance documentation and relevant fault diagnosis guides in the troubleshooting process and for component removal and installation

          • applying standard procedures

          • observing all relevant WHS procedures, including the use of PPE and MSDS.

          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 airframe systems and components of basic light fixed wing aircraft. It is crucial that the requirements for cleanliness and safety precautions relevant to the maintained system are fully perceived, understood and complied with.

          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 airframe systems and components as specified in the Assessment Conditions.

(b) Knowledge 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 and include knowledge of:

          • WHS precautions relevant to airframe system maintenance, including the use of PPE and MSDS

          • standard trade practices relating to tool and test/rigging equipment usage and installation/securing of system components

          • flight control system layout and operation

          • theory of flight:

          airflow

          conditions of flight

          lift and forces

          drag

          wings, tailplane and vertical stabiliser

          lift augmentation (flaps, slats and slots)

          aircraft control surfaces and their function (elevator, ailerons, rudder, elevons and trim tabs)

          flight control balancing and flutter

          stability and control and flight control rigging

          • system layout and operation:

          cockpit controls

          cables and cable tensioning

          pulleys and fairleads

          bellcranks

          levers

          control surface horns

          screwjacks

          push/pull rods

          • mechanical flight control system maintenance procedures and troubleshooting

          • fixed undercarriage and shock absorber systems:

          undercarriage configurations and types (tail wheel, tricycle and bicycle)

          relative advantages of undercarriage configurations steering systems

          types of shock absorber (springs, leaf, coil, spring tube, rubber disc, bungee and oleo)

          wheels and tyres

          axles and wheel bearings

          wheel spats

          fixed undercarriage maintenance procedures and troubleshooting

          • small aircraft brake systems:

          types of brake system (mechanical and hydraulic)

          master/slave cylinder hydraulic brake system operation

          hydraulic fluids and seals

          rigid and flexible plumbing

          brake pads and shoes

          brake discs and drums/linings

          brake system maintenance procedures and troubleshooting

          • cabin heater system layout and operation:

          heat source (muff heaters)

          ducting for heating and demisting

          valves and linkages

          fan

          cabin heating system maintenance procedures and troubleshooting

          • fuel system layout and operation:

          fuel tank types and location

          selector valves and linkages

          drain valves

          rigid and flexible plumbing

          fuel filters

          boost pumps

          • relevant maintenance manuals

          • relevant regulatory requirements and standard procedures.

(c) Assessment recommendation

(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

          Maintenance documentation includes:

          • Servicing schedules

          • Maintenance manuals

          Airframe systems include:

          • Flight control systems

          • Fixed undercarriage shock absorbers

          • Master/slave cylinder brake systems

          • Fuel systems

          • Cabin heating systems

          Airframe system components include:

          • Ailerons, elevators, rudders, trim tabs, flaps and slats

          • Flight control wheels or sticks, cables, pulleys, guides, fairleads, bellcranks, rods, torque tubes, chains, sprockets, trim wheels or handles and rudder pedals or bars

          • Fixed undercarriage hydraulic and rubber shock absorbers

          • Wheels and brake units

          • Brake master cylinders and rigid or flexible plumbing

          • Rigid or flexible fuel tanks, selector/shutoff valves and rigid or flexible plumbing

          • Cabin heater ducting and control valves

          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 stated in maintenance documentation. It is also expected that applicable general-purpose tools and test equipment found in most routine situations would be used where appropriate.

          • 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 as follows:

          at least one (1) of each system:

          flight control systems

          fixed undercarriage shock absorbers

          master/slave cylinder brake systems

          fuel systems

          cabin heating systems

          a representative range of components from each of the following groups:

          ailerons, elevators, rudders, trim tabs, flaps and slats

          flight control wheels or sticks, cables, pulleys, guides, fairleads, bellcranks, rods, torque tubes, chains, sprockets, trim wheels or handles and rudder pedals or bars

          fixed undercarriage hydraulic and rubber shock absorbers

          wheels and brake units

          brake master cylinders and rigid or flexible plumbing

          rigid or flexible fuel tanks, selector/shutoff valves and rigid or flexible plumbing

          cabin heater ducting and control valves.

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