Assessor Resource

MEA425A
Perform bolted composite skin repairs

Assessment tool

Version 1.0
Issue Date: May 2024


This unit requires application of hand skills and the use of maintenance publications, applicable materials, tools and methods to repair aircraft composite skin surfaces using bolted repair techniques.

Applications include composite skin surfaces from fixed and rotary wing aircraft and aircraft components either on-aircraft or in the workshop.

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).

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Prerequisites

MEA401C

Inspect aircraft structures

OR

MEA339C

Inspect, repair and maintain aircraft structures

OR

MEA363B

Inspect, repair and maintain structures and related components of non-pressurised small aircraft

Employability Skills

This unit contains employability skills



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 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

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, 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.

Required skills

Required skills include:

applying relevant WHS procedures, including the use of material safety data sheets (MSDS) and applicable items of personal protective equipment (PPE)

using approved maintenance documentation and aircraft publications relating to bolted repairs to composite aircraft skin

identifying composite component applications in aircraft structures

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

identifying the range of bolted repair patch and repair plug materials

identifying applicable fasteners

identifying applicable sealants

assessing composite component damage using visual and tap test methods

performing composite skin bolted repairs:

external patch repair

internal patch repair

external/internal patch repair

correctly interpreting and/or producing repair scheme/modification drawings/sketches

using appropriate hand tools and machines to perform bolted repairs, including drilling/cutting equipment and material fasteners

Required knowledge

Required knowledge includes:

aircraft construction principles and the causes of structural damage, including metal fatigue and corrosion

structural fatigue preventative measures

composite terminology and materials used

bolted repair methods

types of patch material

fastener types, specifications and identification

plug materials

use of scrim to prevent galvanic corrosion

sealants used in bolted patch repairs and their application and handling

paints and finishes for composite structure

WHS precautions associated with repair of aircraft structure

MSDS

relevant PPE

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 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

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
Extent of damage is correctly assessed to assist in determining repair procedure 
Structure is supported and prepared in accordance with the applicable maintenance manual to ensure personnel safety and freedom from damage 
Appropriate bolted repair scheme is identified in accordance with structural repair manual and/or approved data 
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 
All materials and equipment required are organised 
Damage is cleaned up ready for repair while observing work health and safety (WHS) requirements 
Patch material is obtained and patches are fabricated in accordance with the applicable repair scheme 
Repair plug material is obtained and cut to size 
Patches are fitted and secured with fasteners in accordance with the repair scheme 
Applicable sealant is applied in accordance with the repair scheme 
Surface finish is restored as required 
Required maintenance documentation is completed and processed in accordance with standard enterprise procedures 
Completed assemblies are tagged, sealed or packaged as required 

Forms

Assessment Cover Sheet

MEA425A - Perform bolted composite skin repairs
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

MEA425A - Perform bolted composite skin repairs

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: