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Elements and Performance Criteria

1. Inspect aircraft wooden structure
   • Relevant maintenance documentation and modification status, including defect reports, where relevant, are used to identify specific inspection requirements
   • Appropriate preparation and access to the aircraft structure is undertaken to allow for proper inspection and testing in accordance with maintenance documentation
   • Aircraft wooden structure is visually or physically checked for signs of deterioration, deformation defects or damage in accordance with maintenance documentation and approved procedures 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)
   • Damage or defects are assessed against damage or wear limits specified by structural repair manual or other approved data to determine if repair or replacement is required
2. Repair aircraft wooden structure
   • Extent of deterioration or damage is correctly assessed to assist in determining repair procedure
   • Structure is supported and prepared in accordance with the applicable maintenance manual to ensure personal safety and freedom from damage
   • Appropriate repair scheme is identified in accordance with structural repair manual and/or approved data
   • Specialist advice is obtained in establishing an approved repair scheme where a standard repair scheme cannot be identified or damage is beyond limits
   • All materials and equipment required are organised
   • Structural repairs are performed in accordance with approved repair scheme ensuring that aircraft standard practices are used and process requirements are carried out while observing all relevant WHS requirements, including the use of MSDS and items of PPE
   • Finishing scheme is restored while observing all relevant WHS requirements, including the use of MSDS and items of PPE
   • Work area is cleaned of all waste material or contaminants
   • Components are adjusted, where necessary, to operate within prescribed specifications
   • Required maintenance/repair documentation is completed and processed in accordance with standard enterprise procedures
   • Where required, repaired components or assemblies are tagged, sealed and packaged or cradled in accordance with specified 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.
Inspection and testing requirements include:	Drainage and water and dirt collection points Fabric covered plywood surfaces Single and double plywood skin Structural timbers and bolt holes Glued joint strength Glue lines
Inspection techniques include:	Visual inspection Physical checks Mensuration and alignment
Components to be repaired include:	Load carrying structural timbers Plywood skin Spars and ribs.
Finishing scheme includes:	Refinishing of structure after repair using approved finishing scheme
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:

applying relevant WHS procedures, including the correct selection and use of PPE and MSDS

using approved maintenance documentation and aircraft publications relating to aircraft wooden structure

identifying and using woodworking tools

identifying aircraft structural timbers and their characteristics

identifying potential causes of deterioration in wooden structural components

identifying wooden structure defects and damage

identifying the condition of glue lines

fabricating and fitting repair members

gluing of wooden structure

restoring surface finish after repair.

The underlying skills inherent in this unit should be transferable across a range of inspection, testing and repair applications associated with maintenance of aircraft wooden structures. It is essential that the procedures take into account all aircraft and personal safety precautions relating to aircraft structure.

This shall be demonstrated through application across a range of aircraft wooden structures. Ability to interpret inspection and repair procedures and specifications (allowable limits) and apply them in practice is critical.

The application of the procedures should also clearly indicate knowledge of structural flight loads.

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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:

WHS hazards relating to wooden structure repair materials and how to obtain relevant MSDS and PPE

aircraft wooden construction principles and inspection techniques

wooden structural component attachment methods

the effects of environmental factors on aircraft wooden structures

wooden structure glues and application methods

wooden component assembly methods and testing of joints

wooden structure finishing schemes for exterior and interior surfaces

the application of flight loads to aircraft wooden structural components and joints, and related failure mechanisms

wooden component fabrication and repair techniques.

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