Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MEA420A Mapping and Delivery Guide
Fabricate basic structural components for aircraft

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency MEA420A - Fabricate basic structural components for aircraft
Description This unit of competency is part of the Aeroskills Structures Maintenance Certificate IV training pathway. It covers the competencies required to fabricate by hand and in accordance with specifications and drawings basic structural components for aircraft that are either flat or have only a single curve. The unit is used in workplaces that operate under the airworthiness regulatory systems of the ADF and CASA.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit requires application of hand skills and the use of drawings, specifications and maintenance publications to fabricate basic structural components requiring hand forming only from aluminium alloys and steel alloys at various states of temper.Applications include components for fixed and rotary wing aircraft.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites MEA101B Interpret occupational health and safety practices in aviation maintenanceMEA103B Plan and organise aviation maintenance work activityMEA105C Apply quality standards applicable to aviation maintenance processesMEA107B Interpret and use aviation maintenance industry manuals and specificationsMEA108B Complete aviation maintenance industry documentationMEA109B Perform basic hand skills, standard trade practices and fundamentals in aviation maintenance
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Interpret specifications and organise materials
  • Specifications and drawings are used to determine material requirements
  • Equipment use is planned by determining the procedure for fabricating component
  • Material is correctly identified in accordance with specifications
  • All materials and equipment are organised
       
Element: Prepare material and tooling
  • Dimensions to material are translated in accordance with specifications
  • Cutting and forming equipment are prepared and adjusted to ensure accuracy of fabrication
  • Material is cut according to specifications ensuring minimisation of wastage and maintenance of surplus material identification
  • Material requiring special treatment is prepared for the appropriate processes
  • Solution treatment of materials is carried out in accordance with approved procedures and specifications
       
Element: Hand form material
  • Hand forming is accurately carried out ensuring that specifications are met
  • Formed components are checked for irregularities and correction requirements determined
  • Irregularities are removed to meet required dimensions and specifications
       
Element: Inspect components
  • Fabricated components are inspected to confirm dimensional accuracy and specifications are met
  • Checking fixtures are used, where appropriate, to ensure requirements are met
  • Components requiring special or further treatment are prepared for the appropriate processes
  • Completed components are tagged or identified, as required
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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 and maintenance publications to fabricate basic 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 set back, bend allowance and other standard practices associated with forming of material.

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

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

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

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 relevant 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 and machines for cutting and drilling

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

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:

cutting, bending and drilling

Procedures and requirements

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

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Specifications and drawings are used to determine material requirements 
Equipment use is planned by determining the procedure for fabricating component 
Material is correctly identified in accordance with specifications 
All materials and equipment are organised 
Dimensions to material are translated in accordance with specifications 
Cutting and forming equipment are prepared and adjusted to ensure accuracy of fabrication 
Material is cut according to specifications ensuring minimisation of wastage and maintenance of surplus material identification 
Material requiring special treatment is prepared for the appropriate processes 
Solution treatment of materials is carried out in accordance with approved procedures and specifications 
Hand forming is accurately carried out ensuring that specifications are met 
Formed components are checked for irregularities and correction requirements determined 
Irregularities are removed to meet required dimensions and specifications 
Fabricated components are inspected to confirm dimensional accuracy and specifications are met 
Checking fixtures are used, where appropriate, to ensure requirements are met 
Components requiring special or further treatment are prepared for the appropriate processes 
Completed components are tagged or identified, as required 

Forms

Assessment Cover Sheet

MEA420A - Fabricate basic structural components for aircraft
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

MEA420A - Fabricate basic structural components for aircraft

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: