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Evidence Guide: MEA422A - Repair_modify aircraft metal structure

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

 

MEA422A - Repair_modify aircraft metal structure

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

Prepare to undertake repair

  1. The extent of damage is correctly assessed to assist in determining repair procedure
  2. Structure is prepared and supported in accordance with the applicable maintenance manual to ensure personnel safety and freedom from damage
  3. The appropriate modification or repair scheme is identified in accordance with structural repair manual and/or approved data
  4. Specialist advice in establishing an approved repair scheme is obtained where a standard repair scheme cannot be identified or damage is out of limits
  5. All required materials and equipment are organised
The extent of damage is correctly assessed to assist in determining repair procedure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Structure is prepared and supported in accordance with the applicable maintenance manual to ensure personnel safety and freedom from damage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

The appropriate modification or repair scheme is identified in accordance with structural repair manual and/or approved data

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specialist advice in establishing an approved repair scheme is obtained where a standard repair scheme cannot be identified or damage is out of limits

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

All required materials and equipment are organised

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Repair/modify aircraft structure

  1. Structural repairs are performed in accordance with approved repair scheme, ensuring that aircraft standard practices are used and process requirements are carried out
  2. Work area is cleaned of all waste material or contaminants
  3. Components are adjusted, where necessary, to operate within prescribed specifications
  4. Repaired components or assemblies are tagged, sealed and packaged, or cradled in accordance with specified procedures, where required
  5. Required documentation is completed and processed in accordance with standard enterprise procedures
Structural repairs are performed in accordance with approved repair scheme, ensuring that aircraft standard practices are used and process requirements are carried out

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work area is cleaned of all waste material or contaminants

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Components are adjusted, where necessary, to operate within prescribed specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Repaired components or assemblies are tagged, sealed and packaged, or cradled in accordance with specified procedures, where required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Required documentation is completed and processed in accordance with standard enterprise procedures

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, use special tools and structural repair manuals and schemes and modification data to repair/modify aircraft structure 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 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 repair techniques and the use of the standard repair manual in a range of different repair situations will be necessary to supplement evidence of ability to plan and undertake structure and component repair.

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 at least one item from each of Groups 1 to 6 listed in the Range Statement. 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, using tools and equipment specified by aircraft maintenance manuals. It is also expected that general purpose tools, test and ground support 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 and the causes of structural damage, including metal fatigue and corrosion

structural fatigue preventative measures

structural corrosion removal and preventative measures

aircraft repair schemes and modification data/drawings

procedures for the design and approval of repair schemes and modifications

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 and their application and handling

chemical surface treatments

electroplating

paints and finishes

OHS precautions associated with repair of aircraft structure

MSDS

PPE

Look for evidence that confirms skills in:

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

using 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

identifying various aircraft composite materials and their basic properties by interpretation of markings and visual means

handling and storing aircraft metals and composite materials, including sealing agents, to industry standards

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

correctly assessing and describing the extent of damage

correctly interpreting and/or producing repair scheme/modification drawings (including third angle projection, isometric, sectional formats and hand sketches)

using appropriate hand tools and machines to remove and assemble aircraft structural components, parts, sections and skin, including riveting equipment, drilling equipment, aligning tools and material fasteners (grip pins)

applying correct removal, installation and repair techniques for:

a range of rivets (blind and solid) using hand, squeeze and pneumatic situations

a range of close tolerance fasteners (standard and oversize – hilocks, taper locks), including hole preparation

threaded devices, including internal and external thread cutting, helicoil inserts and damaged stud replacement

hardware assembled by close tolerance fits using heat, cooling and force methods, including bearings, bushes and inserts

correct support of the aircraft structure by jacking, trestling and/or jigging methods

performing a range of metal structure repair techniques, including:

metal scab patch, flush, splice, lap and formed section repair

metal to metal and metal to composite bonding

applying structural corrosion removal/treatment techniques

restoring aircraft structure sealing and surface finishes

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.

Note

The Range Statements below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide

Repair procedures

Repair procedures may include:

1. Remove corrosion by chemical and mechanical methods

2. Restore protective coatings

3. Apply sealants and jointing compounds

4. Freehand precision hole generation

5. Remove and install structural hardware, fastening devices, bushes, bearings and bearing surfaces

6. Remove and repair damaged sections and reinstall

Procedures and requirements

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