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Elements and Performance Criteria

  1. Prepare for troubleshooting.
  2. Relevant maintenance documentation and modification status, including system defect/ service difficulty reports where relevant, are interpreted to identify an unserviceability.
  3. Test hydro-mechanical, mechanical, gaseous and landing gear systems and components.
  4. Troubleshoot hydro-mechanical, mechanical, gaseous and landing gear systems and components.

Required Skills

Required skills

Look for evidence that confirms skills in

Application of all relevant OHampS procedures

The use of maintenance manuals to prepare the aircraft for testing and troubleshooting of hydraulic fuel gaseous flight control landing gear and mechanical systems and components

Use of hand skills tools and systems knowledge in the testing adjustment and troubleshooting of hydraulic fuel gaseous mechanical and landing gear systems

Use of hand skills tools and component knowledge in the adjustment and troubleshooting of hydraulic fuel gaseous and mechanical system components

Jacking of the aircraft as required for landing gear system testing rigging and troubleshooting

Use of hand skills tools and systemcomponent knowledge in the adjustment and troubleshooting of landing gear components

The effective use of maintenance documentation and relevant fault diagnosis guides in the troubleshooting process

The recognition of external defects in hydromechanical gaseous mechanical and landing gear systems and components

Required knowledge

Look for evidence that confirms knowledge of

Hydraulic fuel gaseous mechanical and landing gear system layout operation and characteristics and system component operation and construction including electrical system interfaces

How to configure the aircraft for testing and troubleshooting of hydraulic fuel gaseous mechanical and landing gear systems and components

Evidence Required

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 OHampS 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 hydromechanical 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 operationswitching interrelates 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 aircraftsystem 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 hydromechanical system components and

Fuel systems a system and at least one component from each of and

Landing gear systems each listed system to

Landing gear components one each of to

Gaseous systems each listed system to and at least one component from each of gaseous system components to

Mechanical systems a system applicable to each of and and at least one component from each of mechanical system components to

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


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 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