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Elements and Performance Criteria

1. Remove hydro-mechanical system components
   • Hydro-mechanical system is rendered safe and prepared in accordance with the applicable maintenance manual, including fitment of isolation tags, where necessary, to ensure personal safety
   • Removal of hydro-mechanical components is carried out in accordance with the applicable maintenance manual while observing all relevant work health and safety (WHS) requirements, including the use of material safety data sheets (MSDS) and items of personal protective equipment (PPE)
   • Required maintenance documentation is accurately completed and correctly processed
   • Removed components are tagged, sealed and packaged in accordance with specified procedures
2. Remove landing gear components
   • The aircraft is jacked as specified in the maintenance manual for landing gear component removal
   • Removal of components is carried out in accordance with the applicable maintenance manual while observing all relevant WHS requirements, including the use of MSDS and items of PPE
   • Required maintenance documentation is accurately completed and correctly processed
   • Removed components are tagged, sealed and packaged in accordance with specified procedures
3. Install hydro-mechanical system components
   • Components to be installed are checked to confirm correct part numbers, serviceability and modification status
   • Component installation is carried out in accordance with the applicable maintenance manual while observing all relevant WHS requirements, including the use of MSDS and items of PPE
   • Required maintenance documentation is completed and processed in accordance with standard enterprise procedures
4. Install landing gear components
   • Components to be installed are checked to confirm correct part numbers, serviceability and modification status
   • Component installation is carried out in accordance with the applicable maintenance manual while observing all relevant WHS requirements, including the use of MSDS and items of PPE
   • Required maintenance documentation is completed and processed in accordance with standard enterprise procedures

Range Statement

This field allows for different work environments and conditions that may affect 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.
Hydro-mechanical systems include:	Hydraulic systems Fuel systems
Components of hydro-mechanical systems include:	Hydraulic accumulators, filters, reservoirs, valves, pumps, motors, actuators, regulators and direct reading gauges Fuel system filters, valves, pumps, rigid and flexible storage cells/tanks Rigid and flexible pipelines, hoses and fittings
Landing gear components include:	Wheel assemblies or skids Brake units (not applicable to rotary wing aircraft with skids or floats) Struts/oleos (not applicable to rotary wing aircraft with skids or floats)
Electrical interface includes:	Associated electrical loom terminations and/or plugs where components are electrically actuated or controlled
Procedures and requirements include:	Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

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Performance 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 under the specified conditions of assessment, and must include:

using hand skills and tools to remove and install hydraulic and fuel system components

jacking of the aircraft as required for landing gear component removal and installation

correctly installing and securing of aircraft hardware

using hand skills and tools to remove and install landing gear components and the correct handling of heavy components

using maintenance manuals to prepare the aircraft for component removal and installation and correct interpretation of removal and installation instructions

applying standard procedures

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

It is essential that system cleanliness requirements and safety precautions applicable to the system being maintained are fully observed, understood and complied with.

Evidence of transferability of skills and knowledge related to removal and installation is essential. This may be demonstrated through application across a number of aircraft systems or aircraft types, but must cover a sufficient range of tasks to demonstrate familiarity with attachment methods, connection hardware and couplings peculiar to each type of system, and of safe handling of heavy components.

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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

hydraulic fluids (mineral and synthetic) and handling precautions

hydraulic seal types and applications

how to locate and correctly remove and install components of hydraulic systems

aircraft fuels and handling precautions

fuel seal types and applications

how to locate and correctly remove and install fuel system components

electrical circuit isolation and plug removal and installation

how to jack the aircraft for landing gear component removal and installation

how to locate and correctly remove and install landing gear components, including the handling of heavy components

WHS procedures relating to hydraulic systems, fuel systems and landing gear components

how to obtain MSDS

the selection and use of items of PPE

relevant maintenance manuals

relevant regulatory requirements and standard procedures.

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