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Evidence Guide: MEA422 - 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

 

MEA422 - 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 while observing all relevant work health and safety (WHS) requirements, including the use of material safety data sheets (MSDS) and items of personal protective equipment (PPE)
  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 while observing all relevant work health and safety (WHS) requirements, including the use of material safety data sheets (MSDS) and items of personal protective equipment (PPE)

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

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1.

Prepare to undertake repair

1.1

The extent of damage is correctly assessed to assist in determining repair procedure

1.2

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

1.3

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

1.4

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

1.5

All required materials and equipment are organised

2.

Repair/modify aircraft structure

2.1

Structural repairs are performed in accordance with approved repair scheme, ensuring that aircraft standard practices are used and 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 items of personal protective equipment (PPE)

2.2

Work area is cleaned of all waste material or contaminants

2.3

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

2.4

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

2.5

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

Required Skills and Knowledge

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1.

Prepare to undertake repair

1.1

The extent of damage is correctly assessed to assist in determining repair procedure

1.2

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

1.3

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

1.4

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

1.5

All required materials and equipment are organised

2.

Repair/modify aircraft structure

2.1

Structural repairs are performed in accordance with approved repair scheme, ensuring that aircraft standard practices are used and 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 items of personal protective equipment (PPE)

2.2

Work area is cleaned of all waste material or contaminants

2.3

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

2.4

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

2.5

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

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 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

correctly supporting 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.

The underlying skills inherent in this unit should be transferable into other areas that require similar techniques. 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.

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 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

WHS precautions associated with repair of aircraft structure

MSDS

PPE.

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.

Repair procedures include:

Removing corrosion by chemical and mechanical methods

Restoring protective coatings

Applying sealants and jointing compounds

Freehand precision hole generation

Removing and installing structural hardware, fastening devices, bushes, bearings and bearing surfaces

Removing and repairing damaged sections and reinstall

Procedures and requirements include:

Industry standard specified by manufacturers, regulatory authorities or the enterprise