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Evidence Guide: MEA314 - Inspect, test and troubleshoot gas turbine engine systems and components

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!

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MEA314 - Inspect, test and troubleshoot gas turbine engine systems and components

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

Inspect gas turbine engine system and components

  1. Isolation tags already attached to the system or related systems are checked and aircraft/engine configured for safe system inspection and operation in accordance with applicable maintenance manual
  2. Gas turbine engine and/or component are visually or physically checked for external and internal signs of defects in accordance with applicable maintenance manual 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)
Isolation tags already attached to the system or related systems are checked and aircraft/engine configured for safe system inspection and operation in accordance with applicable maintenance manual

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Gas turbine engine and/or component are visually or physically checked for external and internal signs of defects in accordance with applicable maintenance manual 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:

 

 

 

 

 

 

 

Test gas turbine engine system

  1. Aircraft and gas turbine engine system are correctly prepared in accordance with applicable maintenance manual and connected to appropriate test equipment
  2. Built-in system test functions and status displays are activated, where applicable, outputs recorded and interpreted
  3. 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
Aircraft and gas turbine engine system are correctly prepared in accordance with applicable maintenance manual and connected to appropriate test equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Built-in system test functions and status displays are activated, where applicable, outputs recorded and interpreted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare for troubleshooting

  1. Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify an unserviceability
Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify an unserviceability

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Troubleshoot gas turbine engine system

  1. Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination
  2. Maintenance manual fault diagnosis guide and logical processes are used to ensure efficient and accurate troubleshooting to line replacement level
  3. Specialist advice is obtained, where required, to assist with the troubleshooting process
  4. Gas turbine engine system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required
  5. Fault rectification requirements are determined to assist in planning the repair
Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintenance manual fault diagnosis guide and logical processes are used to ensure efficient and accurate troubleshooting to line replacement level

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specialist advice is obtained, where required, to assist with the troubleshooting process

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Gas turbine engine system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fault rectification requirements are determined to assist in planning the repair

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.

Inspect gas turbine engine system and components

1.1

Isolation tags already attached to the system or related systems are checked and aircraft/engine configured for safe system inspection and operation in accordance with applicable maintenance manual

1.2

Gas turbine engine and/or component are visually or physically checked for external and internal signs of defects in accordance with applicable maintenance manual 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.

Test gas turbine engine system

2.1

Aircraft and gas turbine engine system are correctly prepared in accordance with applicable maintenance manual and connected to appropriate test equipment

2.2

Built-in system test functions and status displays are activated, where applicable, outputs recorded and interpreted

2.3

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

3.

Prepare for troubleshooting

3.1

Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify an unserviceability

4.

Troubleshoot gas turbine engine system

4.1

Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination

4.2

Maintenance manual fault diagnosis guide and logical processes are used to ensure efficient and accurate troubleshooting to line replacement level

4.3

Specialist advice is obtained, where required, to assist with the troubleshooting process

4.4

Gas turbine engine system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required

4.5

Fault rectification requirements are determined to assist in planning the repair

Required Skills and Knowledge

Elements describe the essential outcomes.

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

1.

Inspect gas turbine engine system and components

1.1

Isolation tags already attached to the system or related systems are checked and aircraft/engine configured for safe system inspection and operation in accordance with applicable maintenance manual

1.2

Gas turbine engine and/or component are visually or physically checked for external and internal signs of defects in accordance with applicable maintenance manual 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.

Test gas turbine engine system

2.1

Aircraft and gas turbine engine system are correctly prepared in accordance with applicable maintenance manual and connected to appropriate test equipment

2.2

Built-in system test functions and status displays are activated, where applicable, outputs recorded and interpreted

2.3

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

3.

Prepare for troubleshooting

3.1

Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify an unserviceability

4.

Troubleshoot gas turbine engine system

4.1

Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination

4.2

Maintenance manual fault diagnosis guide and logical processes are used to ensure efficient and accurate troubleshooting to line replacement level

4.3

Specialist advice is obtained, where required, to assist with the troubleshooting process

4.4

Gas turbine engine system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required

4.5

Fault rectification requirements are determined to assist in planning the 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 under the specified conditions of assessment, and must include:

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

using MSDS and PPE

using relevant maintenance documentation and aircraft manuals to:

through visual/physical inspection, recognise 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, accurately and efficiently to troubleshoot the causes of unserviceabilities in gas turbine engines and engine systems, clearly record details and identify the required rectification actions.

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.

This shall be demonstrated through application across a number of engine system groups as listed in the Assessment Conditions. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical. The application of testing procedures and functional rigging checks should also indicate knowledge of system operation.

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:

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 auxiliary power units (APUs)

engine condition monitoring

relevant WHS 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.

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.

Gas turbine engine and/or systems include:

Engine change unit, main components and accessories/drives

Control system

Ignition and starter systems

Fuel system

Oil system

Air system

Procedures and requirements Include:

Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise