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Elements and Performance Criteria

1. Prepare to fit avionic modification sheet metal components
   • Applicable sheet metal components are identified in accordance with applicable modification instructions and maintenance documentation
   • All required materials and equipment are selected and organised in accordance with the applicable modification instructions and maintenance documentation
2. Fit avionic modification sheet metal components
   • Sheet metal components are fitted in accordance with the modification instructions, ensuring that aircraft standard practices are used and standard process requirements are carried out while observing all relevant work health and safety (WHS) requirements, including the use of material safety data sheets (MSDS) and personal protective equipment (PPE)
   • Work area is cleaned of all waste material
3. Complete modification activities
   • Required documentation is accurately completed and correctly processed in accordance with 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.
Sheet metal components include:	Doublers for the installation of antennas Brackets for the installation of avionic system components Racks for components, such as transmitters/receivers Hardware for the support of antenna cables and system electrical wiring
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 use of MSDS and PPE

using enterprise procedures, approved maintenance documentation and aircraft publications relating to aircraft sheet metal components

identifying various aircraft metals used for sheet metal components and their basic metallurgy properties by interpretation of markings, numbering systems or visual, chemical or mechanical means

handling and storing aircraft metals used for sheet metal components, including sealing agents, to industry standards

identifying aircraft sheet metal assembly fasteners (metal and non-metallic) by interpretation of markings, numbering systems, size, shape and colour

correctly interpreting, modification drawings and hand sketches

using appropriate hand tools and machines to fit avionic modification sheet metal components to the aircraft

freehand precision hole generation

applying corrosion prevention techniques during component fitment

restoring sealing and surface finishes.

The underlying skills inherent in this unit should be transferable into other areas that require similar techniques. It is essential that procedures take into account all safety precautions and quality requirements, standards and practices, and processes associated with assembly.

Evidence of knowledge about enterprise procedures relating to avionic modification incorporation and practices relating to associated sheet metal component installation will be necessary to supplement evidence of ability to fit a range of sheet metal components in a specific application.

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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:

aircraft sheet metal component construction principles

identification of primary, secondary and tertiary structure

aircraft sheet metal assembly fasteners, their characteristics and identification

fits and clearances for fasteners

fitting methods for fasteners

use of grip pins

corrosion of aircraft structure and its prevention

application of surface finishes

relevant WHS procedures

how to obtain MSDS

use of PPE.

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