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

MEA322C Mapping and Delivery Guide
Test and troubleshoot gas turbine engine systems and components

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency MEA322C - Test and troubleshoot gas turbine engine systems and components
Description This unit of competency is part of the Mechanical Certificate IV (Aircraft Maintenance Stream) training pathways and must be taken with MEA319C Inspect gas turbine engine systems and components. This unit covers the competencies required to test and troubleshoot the systems and components of gas turbine engines. The unit is used in workplaces that operate under the airworthiness regulatory systems of the ADF and CASA.Where a CASA licensing outcome is sought this unit forms part of the CASA requirement for the granting of the chosen B1 maintenance certification licence under CASR Part 66, in accordance with the licensing provisions in Section 3, Assessment Guidelines.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit requires application of hand skills, the use of maintenance publications and knowledge of gas turbine engine and system theory to test and troubleshoot gas turbine engines and engine system components.Applications include fixed and rotary wing aircraft.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites MEA319C Inspect gas turbine engine systems and components
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: Prepare for troubleshooting
  • Relevant maintenance documentation and modification status, including system defect reports, where relevant, are interpreted to identify an unserviceability
       
Element: Test gas turbine engine system
  • Aircraft and gas turbine engine system are correctly prepared in accordance with applicable maintenance manual and connected to appropriate test equipment
  • Built-in system test functions and status displays are activated, where applicable, outputs recorded and interpreted
  • Assistance is provided with gas turbine engine and/or system operation during prescribed test procedures to establish serviceability and correct function in accordance with applicable maintenance manual
       
Element: Troubleshoot gas turbine engine system
  • Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination
  • Maintenance manual fault diagnosis guide and logical processes are used to ensure efficient and accurate troubleshooting
  • Specialist advice is obtained, where required, to assist with the troubleshooting process
  • Gas turbine engine system faults are located and causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required
  • Fault rectification requirements are determined to assist in planning the repair or adjustment
       


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, use maintenance publications and engine and system theory knowledge to test and troubleshoot gas turbine engines and engine system components on fixed or rotary wing aircraft 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 inspection, testing and troubleshooting applications (including the timely involvement of supervisor or other trades) associated with engine systems. It is essential that system test procedures take into account all safety precautions associated with gas turbine engine system operation, especially with regard to high-energy ignition units, and that awareness be demonstrated of dual inspection requirements associated with work on engine control systems.

Evidence of transferability of skills and knowledge related to testing and troubleshooting is essential. This may be demonstrated through application across a number of engine systems or engine types. The application of testing procedures and functional rigging checks should also indicate knowledge of system operation. Engine system operation knowledge, the relationship of individual components and the links with other systems will be necessary to supplement evidence of ability to carry out rigging checks and troubleshoot the system within the limits of the aircraft/system fault-finding guide before undertaking any action. The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards.

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 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 or simulated work environment using tools and equipment specified in 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. The level of troubleshooting is limited in its application to the use of fault diagnosis guides or other similar information.

Method of assessment

Guidance information for assessment

Individuals being assessed who have already attained MEA314C Inspect, test and troubleshoot gas turbine engine systems and components, will have fully met the criteria for this unit. Log of Industrial Experience and Achievement records relating to MEA314C Inspect, test and troubleshoot gas turbine engine systems and components, may be accepted as also meeting the evidence requirements for this unit.

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:

fault diagnosis techniques

gas turbine engine layout and operation:

types of gas turbine

operating principles and power output

gas path

intakes

compressors

combustion chambers

turbines

exhaust

thrust reversers

accessory drives

bearings and seals

maintenance requirements and troubleshooting procedures

system and component operation, including electrical and instrument system interfaces:

fuel control and fuels

lubrication and lubricants

air distribution

starting

ignition

power augmentation

instrumentation:

performance indication

condition indication

warning

presentation and interpretation of electronic displays

fire warning and extinguishing

control system and rigging of engine controls

engine spin/run procedures including the operation of APUs

engine condition monitoring

relevant OHS practices, including the requirements for the lifting and handling of heavy components

how to obtain MSDS

selection and use of PPE

relevant maintenance manuals

relevant regulatory requirements and standard procedures

Look for evidence that confirms skills in:

applying relevant OHS procedures, including lifting and handling of heavy components

using MSDS and PPE

using relevant maintenance documentation and aircraft manuals to:

recognise through visual/physical inspection external and internal signs of defects in gas turbine engines, components and system components

assist with testing of gas turbine engine and engine system operation, be able to operate systems, monitor indications, record parameters and recognise correct function

compile engine condition monitoring records

rig and adjust engine controls and systems

using fault diagnosis guides and equivalent data, to accurately and efficiently troubleshoot the causes of unserviceabilities in gas turbine engines and engine systems, clearly record details and identify the required rectification actions

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

Range statements listed below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide

Gas turbine engine systems

Gas turbine engine systems may include:

1. Engine change unit, main components and accessories/drives

2. Control system

3. Ignition and starter systems

4. Fuel system

5. Oil system

6. Air system

Troubleshooting

Troubleshooting involves the use of fault-finding charts or similar, to line replacement level

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

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
Relevant maintenance documentation and modification status, including system defect reports, where relevant, are interpreted to identify an unserviceability 
Aircraft and gas turbine engine system are correctly prepared in accordance with applicable maintenance manual and connected to appropriate test equipment 
Built-in system test functions and status displays are activated, where applicable, outputs recorded and interpreted 
Assistance is provided with gas turbine engine and/or system operation during prescribed test procedures to establish serviceability and correct function in accordance with applicable maintenance manual 
Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination 
Maintenance manual fault diagnosis guide and logical processes are used to ensure efficient and accurate troubleshooting 
Specialist advice is obtained, where required, to assist with the troubleshooting process 
Gas turbine engine system faults are located and causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required 
Fault rectification requirements are determined to assist in planning the repair or adjustment 

Forms

Assessment Cover Sheet

MEA322C - Test and troubleshoot gas turbine engine systems and components
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

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Assessor name:

Signature:

Date:

Assessment Record Sheet

MEA322C - Test and troubleshoot gas turbine engine systems and components

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: