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Evidence Guide: MEA421A - Fabricate advanced structural components for aircraft

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEA421A - Fabricate advanced structural components for aircraft

What evidence can you provide to prove your understanding of each of the following citeria?

Interpret specifications and organise materials

  1. Specifications and drawings are used to determine material requirements
  2. Equipment use is planned by determining the procedure for fabricating component
  3. Material is correctly identified in accordance with specifications
  4. All materials and equipment are organised
Specifications and drawings are used to determine material requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Equipment use is planned by determining the procedure for fabricating component

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Material is correctly identified in accordance with specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

All materials and equipment are organised

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare material and tooling

  1. Dimensions to material is translated in accordance with specifications
  2. Cutting and forming equipment are prepared and adjusted to ensure accuracy of fabrication
  3. Material is cut according to specifications ensuring minimisation of wastage and maintenance of surplus material identification
  4. Material requiring special treatment is prepared for the appropriate processes
  5. Solution treatment of materials is carried out in accordance with approved procedures and specifications
Dimensions to material is translated in accordance with specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Cutting and forming equipment are prepared and adjusted to ensure accuracy of fabrication

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Material is cut according to specifications ensuring minimisation of wastage and maintenance of surplus material identification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Material requiring special treatment is prepared for the appropriate processes

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solution treatment of materials is carried out in accordance with approved procedures and specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Form material

  1. Appropriate forming procedure is determined ensuring that specifications are met and the most suitable forming method is selected
  2. Templates are manufactured, where required, by forming method
  3. Press tools are designed and manufactured, where required, by forming method
  4. Forming equipment is operated correctly and safely to form material in accordance with drawings and specifications
  5. Hand forming is performed accurately, where necessary
Appropriate forming procedure is determined ensuring that specifications are met and the most suitable forming method is selected

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Templates are manufactured, where required, by forming method

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Press tools are designed and manufactured, where required, by forming method

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Forming equipment is operated correctly and safely to form material in accordance with drawings and specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Hand forming is performed accurately, where necessary

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Hand correct fabricated components

  1. Components are checked for irregularities and correction requirements determined
  2. Irregularities are removed to meet required dimensions and specifications
Components are checked for irregularities and correction requirements determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Irregularities are removed to meet required dimensions and specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect components

  1. Fabricated components are inspected to confirm dimensional accuracy and specifications are met
  2. Checking fixtures are used, where appropriate, to ensure requirements are met
  3. Components requiring special or further treatment are prepared for the appropriate processes
  4. Completed components are tagged or identified, as required
Fabricated components are inspected to confirm dimensional accuracy and specifications are met

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Checking fixtures are used, where appropriate, to ensure requirements are met

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Components requiring special or further treatment are prepared for the appropriate processes

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Completed components are tagged or identified, as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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 apply hand skills and use drawings, specifications, maintenance publications and applicable machinery to fabricate advanced structural components from a range of aircraft metals while applying all relevant safety precautions.

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 aircraft applications. It is essential that procedures take into account all safety precautions and quality requirements. Skill and knowledge application must include flat pattern development and other standard practices associated with forming of material.

Evidence of knowledge and skills associated with the broad range of structural fabrication techniques and their application to different materials used in aircraft manufacture will be required to supplement evidence of ability to fabricate components.

A person cannot be assessed as competent until it can be demonstrated to the satisfaction of the workplace assessor that the relevant elements of the unit of competency are being achieved under routine supervision on a representative range of structural fabrication tasks. This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry Evidence Guide.

Context of and specific resources for assessment

Competency should be assessed in the work environment, or simulated work environment, using tools and equipment specified by aircraft maintenance manuals. It is expected that general purpose tools and test equipment found in most routine situations would be used where appropriate.

Method of assessment

Guidance information for assessment

Required Skills and Knowledge

Look for evidence that confirms knowledge of:

aircraft construction principles

causes of structural fatigue and preventative measures

structural corrosion and preventative measures

aircraft structural drawings and repair scheme drawings

material specifications for aluminium alloys and steel alloys used in aircraft structure

structural material identification by markings and numbering systems

material identification by chemical, electrical and mechanical methods

material storage requirements

hardware types and specifications

identification of hardware

sealants used in aircraft structure

chemical surface treatments

electroplating

paints and finishes

flat pattern development

design and manufacture of templates

design and manufacture of press tools

methods for folding complex and nested sections

machinery used for stretching, shrinking, bending, cutting, drilling, rolling, wheeling and folding

use of forming blocks, templates and press tools to form components

OHS precautions associated with fabrication of aircraft structural components

MSDS

PPE

Look for evidence that confirms skills in:

applying relevant OHS procedures, including the use of MSDS and applicable items of PPE

the use of approved maintenance documentation and aircraft publications relating to aircraft structure

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

handling and storing aircraft metals to industry standards

identifying aircraft structural assembly fasteners by interpretation of markings, numbering systems, size, shape and colour

fabrication of aircraft structural components and parts by:

correctly interpreting drawings (including third angle projection, isometric, sectional formats and hand sketches)

developing component flat pattern using basic drawing tools, geometric drawing processes, parallel, radial and triangulation methods, calculating and applying bend allowance/deduction/setback (an understanding of flat pattern development terminology is required)

using appropriate hand tools, machines (stretching, shrinking, bending, cutting, drilling, rolling, wheeling and folding), forming blocks, templates and presses to form/produce dished, domed, curved components, bent/angled (L, Z, U, hat) sections and lightening holes, flanges and joggles

assembling component parts using appropriate hand and machine tools and standard aircraft fasteners to industry standards

applying appropriate metal heat treatment processes

applying appropriate metal surface treatments

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.

Components

Components are to be fabricated:

using materials comprising various types of sheet metal used in aircraft manufacture, including aluminium alloys and structural steel alloys across a range of temper

Machinery processes

Machinery processes are to include:

bending, cutting, rolling, shrinking and stretching

Procedures and requirements

Refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise