Unit of competency Outline
Date retreived
22/07/2026 10:06 PM AWST
22/07/2026 10:06 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Perform bolted composite skin repairs
Perform bolted composite skin repairs
Unit of competency
National Code
MEA425A
MEA425A
State Code
WG866
WG866
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
14/11/2013
Field of Education
031503 - Aircraft Maintenance Engineering
Original Release Date
14/11/2013
Nominal Hours
25
Description
This unit of competency is part of the Aeroskills Structures Maintenance Certificate IV training pathway, and of the Mechanical Certificate IV (Aircraft Maintenance Stream) training pathways. It covers the competencies required for performing bolted repairs to aircraft composite skin. The unit is used in workplaces that operate under the airworthiness regulatory systems of the Australian Defence Force (ADF) and the Civil Aviation Safety Authority (CASA).
Notes
Elements and Performance Criteria
1 Plan repair
- 1.1 Extent of damage is correctly assessed to assist in determining repair procedure
- 1.2 Structure is supported and prepared in accordance with the applicable maintenance manual to ensure personnel safety and freedom from damage
- 1.3 Appropriate bolted repair scheme is identified in accordance with structural repair manual and/or approved data
- 1.4 Specialist advice is obtained in establishing an approved repair scheme where a standard repair scheme cannot be identified or damage criteria are out of limits
- 1.5 All materials and equipment required are organised
2 Repair components using bolted patches
- 2.1 Damage is cleaned up ready for repair while observing work health and safety (WHS) requirements
- 2.2 Patch material is obtained and patches are fabricated in accordance with the applicable repair scheme
- 2.3 Repair plug material is obtained and cut to size
- 2.4 Patches are fitted and secured with fasteners in accordance with the repair scheme
- 2.5 Applicable sealant is applied in accordance with the repair scheme
- 2.6 Surface finish is restored as required
- 2.7 Required maintenance documentation is completed and processed in accordance with standard enterprise procedures
- 2.8 Completed assemblies are tagged, sealed or packaged as required
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. 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
Range statements listed below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide.
Applicable materials and methods
Types of bolted repair include:
External
Internal
External/internal
Application
Application of this unit may relate to:
scheduled or unscheduled maintenance activities
individual or team-related activities
Procedures and requirements
Refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise
Note
Range statements listed below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide.
Applicable materials and methods
Types of bolted repair include:
External
Internal
External/internal
Application
Application of this unit may relate to:
scheduled or unscheduled maintenance activities
individual or team-related activities
Procedures and requirements
Refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise
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 maintenance publications, applicable materials, tools and methods to repair aircraft composite skin using bolted repairs while applying all relevant safety procedures.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The underlying skills inherent in this unit should be transferable across the range of composite skin materials and patch materials and fasteners. Correct checking and wearing of PPE is critical.
Evidence of knowledge about bolted 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 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 the application of repair patches from each of Groups 1 to 3 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 workplace or simulated workplace. It is also 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
Overview of assessment
A person who demonstrates competency in this unit must be able to apply hand skills and use maintenance publications, applicable materials, tools and methods to repair aircraft composite skin using bolted repairs while applying all relevant safety procedures.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The underlying skills inherent in this unit should be transferable across the range of composite skin materials and patch materials and fasteners. Correct checking and wearing of PPE is critical.
Evidence of knowledge about bolted 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 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 the application of repair patches from each of Groups 1 to 3 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 workplace or simulated workplace. It is also 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
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| AUG06 | MEA425 | Perform bolted composite skin repairs | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| D749 | MEA41311 | Certificate IV in Aeroskills (Structures) | Qualification |