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Elements and Performance Criteria

1. Prepare to undertake seam sealing
   • The seam sealing task is identified from maintenance documentation and enterprise procedures
   • Applicable enterprise procedures, process specifications and maintenance publications are used to identify materials and tools to be used for seam sealing
   • Aircraft or component identification is matched with relevant maintenance documentation
2. Prepare seams for application of sealant
   • Work health and safety (WHS) requirements are identified and complied with and personal protective equipment (PPE) is checked for correct fit and function
   • Materials and tools required for sealant application are assembled
   • Masking is applied in accordance with enterprise procedures and/or process specifications
   • Seams are prepared for sealant application in accordance with enterprise procedures and/or process specifications
3. Mix sealant
   • Environment is established in accordance with enterprise procedures and/or process specifications
   • The applicable sealant is mixed in accordance with manufacturer’s specifications while observing all relevant WHS requirements, including the use of material safety data sheets (MSDS) and items of PPE
4. Apply sealant to seams
   • Sealant is applied in accordance with enterprise procedures and/or process specifications while observing all relevant WHS requirements, including the use of MSDS and items of PPE
   • The sealed seam is inspected and blemishes, voids or gaps are filled
   • Masking materials are removed
   • Waste and/or surplus materials are disposed of in accordance with legislative, regulatory and enterprise procedures
   • Documentation is completed in accordance with standard enterprise procedures
   • Aircraft or component, equipment and work area is left in a condition enabling the next task to begin

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.
Procedures and requirements include:	Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise
WHS requirements are identified from:	Commonwealth/state/territory WHS legislation, regulations and codes Procedures manuals Safety manuals Work instructions Maintenance organisation manuals MSDS Defence regulations and instructions Standing instructions
Legislative, regulatory and enterprise procedures include:	Commonwealth/state/territory environmental legislation, regulations and codes for the storage and disposal of hazardous and toxic materials MSDS Maintenance organisation manuals Procedures manuals Work instructions Relevant Defence regulations and instructions Standing instructions

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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 WHS procedures relating to seam sealing, including the selection and correct use of PPE

selecting and applying masking materials

selecting, mixing and applying applicable sealants

using MSDS

selecting and using applicable enterprise procedures and/or process specifications

correctly disposing of waste materials

cleaning of work area and maintenance of equipment and tools.

The underlying skills inherent in this unit should be transferable across a range of seam sealing tasks associated with surface seams of aircraft and aircraft components. It is essential that applicable processes, cleanliness requirements and safety precautions, including the correct use of PPE, and application of environmental protection procedures are fully observed, understood and complied with. Ability to interpret seam sealing procedures and apply them in practice is critical.

This is to be demonstrated through application of sealant to surface seams across a range of aircraft and component tasks.

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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:

relevant enterprise procedures, process specifications and maintenance publications

WHS procedures relating to seam sealing, including the selection and use of PPE

how to obtain MSDS

types of sealants used for seam sealing

types of masking materials

environmental legislation and regulations relating to the storage, use and disposal of hazardous materials.

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