Elements and Performance Criteria

RANGE STATEMENT
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.
Note
Range statements listed below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide.
Hydro-mechanical systems and components
Hydro-mechanical systems include:
1. Hydraulic systems
2. Fuel systems
Components of hydro-mechanical systems include:
3. Hydraulic accumulators, filters, reservoirs, valves, pumps, motors, actuators, regulators, direct reading gauges
4. Fuel system filters, valves, pumps, rigid and flexible storage cells/tanks
5. Rigid and flexible pipelines, hoses and fittings
Landing gear systems and components
(components of landing gear retraction, steering and braking systems are covered by hydro-mechanical and mechanical system components)
Landing gear systems include:
6. Retraction systems
7. Steering systems
8. Brake systems, including anti-skid where applicable
Landing gear components include:
9. Wheel assemblies
10. Brake units
11. Struts/oleos
Gaseous systems and components
Gaseous systems include:
12. Pneumatic
13. Air cycle air conditioning
14. Pressurisation
15. Fire extinguishing
Gaseous system components include:
16. Gauges (direct reading), temperature sensors, pressurisation controllers, temperature controllers
17. Heat exchangers, pressure vessels, condensers, compressors, expansion turbines, humidifiers, valves, actuators
18. Rigid and flexible pipelines and fittings
19. Ducting
Mechanical systems and components
Mechanical systems include:
20. Mechanical operating and locking systems
21. Mechanical flight control systems or the mechanical elements of power-assisted flight control systems
Mechanical system components include:
22. Cables, pulleys, guides, fairleads, tension regulators, chains, sprockets
23. Control rods, torque tubes, bellcranks, screwjacks, clutches, springs, bearings, gears
24. Control sticks, wheels, columns, trim wheels or handles, rudder pedals
Troubleshooting
Troubleshooting involves the use of fault finding charts or similar, to line replacement level.
Application
Application of this unit may relate to:
Scheduled or unscheduled maintenance activities
Individual or team related activities
Procedures and requirements
Refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

EVIDENCE GUIDE
The Evidence Guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment
A person who demonstrates competency in this unit must be able to test and troubleshoot a range of hydraulic, fuel, gaseous and mechanical system and landing gear components in accordance with relevant maintenance manual instructions while applying all relevant OH&S procedures and standard processes.

Critical aspects for assessment and evidence required to demonstrate competency in this unit
The underlying skills inherent in this unit should be transferable across a range of testing and troubleshooting applications (including the timely involvement of supervisors or other trades) associated with aircraft hydro-mechanical, gaseous, mechanical and landing gear systems and their components. It is essential that system test procedures take into account all safety precautions applicable to the system being maintained, especially where system operation/switching inter-relates to other systems being maintained. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical.
Evidence of transferability of skills and knowledge related to inspection is essential. This may be demonstrated through application across a number of aircraft systems or aircraft types. 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 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 of this Unit of Competency are being achieved under routine supervision on each type of system and on at least one component of each group listed in the Range Statement, as follows:
Hydraulic systems - a system and at least one component from each of hydro-mechanical system components 3 and 5
Fuel systems - a system and at least one component from each of 4 and 5
Landing gear systems - each listed system 6 to 8
Landing gear components - one each of 9 to 11
Gaseous systems - each listed system 12 to 15 and at least one component from each of gaseous system components 16 to 19
Mechanical systems - a system applicable to each of 20 and 21 and at least one component from each of mechanical system components 22 to 24
This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry .

Context of and specific resources for assessment
Competency should be assessed in the work environment or simulated work environment, using procedures, tools and equipment specified in maintenance documentation. It is also expected that general purpose tools, test and ground support equipment found in most routine situations would be used where appropriate. The level of troubleshooting is limited in its application to the use of fault diagnosis guides or other similar information.

Method of assessment

Guidance information for assessment