This unit requires application of hand skills, theory knowledge and maintenance publication procedures to test run aircraft gas turbine engines and engine modules in engine test stands following overhaul or repair in workshops.

Applications include turbo-jet, turbofan, turboshaft, turboprop engines and engine modules, or auxiliary power units.

MEA383A

Repair and/or overhaul gas turbine engine air inlet and compressor components and/or modules

MEA384A

Repair and/or overhaul gas turbine engine combustion section components and/or modules

MEA385A

Repair and/or overhaul gas turbine engine turbine and exhaust section components

MEA386A

Repair and/or overhaul gas turbine engine ancillary section components

1. Prepare engine or module for testing

1.1. Maintenance documentation is checked to confirm that engine or module is ready for testing

1.2. Where required, engine modules are assembled into a test engine

1.3. Engine is configured for testing in accordance with maintenance manual requirements and standard enterprise procedures

2. Install engine in test stand

2.1. Engine is installed in test stand in accordance with maintenance manual requirements and standard enterprise procedures

2.2. Fuel, oil and fluid levels are checked

2.3. Engine test stand is prepared for operation

3. Run and test engine or module performance

3.1. Engine is started and operating parameters are checked

3.2. Engine performance is tested and trimmed, where applicable, in accordance with maintenance manual requirements and standard enterprise procedures

3.3. Engine operating parameters and test results are recorded in accordance with standard enterprise procedures

4. Remove engine from test stand

4.1. Engine is removed from test stand in accordance with maintenance manual requirements and standard enterprise procedures

4.2. Serviceable engines or modules are configured, inhibited and prepared in accordance with maintenance manual requirements and standard enterprise procedures for transport or storage

4.3. Unserviceable engines or modules are returned to workshop in accordance with standard enterprise procedures for rectification or rework

Required skills

Look for evidence that confirms skills in:

applying relevant OHS procedures

using relevant MSDS and items of PPE

using relevant maintenance manuals and standard enterprise procedures to:

prepare engines or modules for test running

install engines in test stands

test run and trim engines where applicable

record engine operating parameters

remove engines from the test stand

complete documentation

configure and inhibit serviceable engines and modules for transport or storage

Required knowledge

Look for evidence that confirms knowledge of:

how to obtain relevant MSDS

the use of applicable items of PPE

test stand operation

engine and module test requirements

engine operating parameters and adjustment methods

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 gas turbine engine theory knowledge and use maintenance publications to test and adjust the operation of overhauled engines or modules 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 repair and/or overhaul applications associated with gas turbine engines and/or modules. It is essential that the maintenance procedures (including the use of correct fuels and lubricants) are interpreted and applied to ensure quality and safety standards are achieved.

Evidence of transferability of skills and knowledge related to repair is essential. This may be demonstrated through application across a number of gas turbine engine and/or module test runs. Capability to interpret test procedures and specifications (allowable limits) and apply them in practice is critical. The application of testing procedures should also clearly indicate knowledge of system operation. Knowledge of system operation and the relationship of individual components will be necessary to supplement evidence of ability to troubleshoot engine or module faults 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 a representative range of engine/module test runs. 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 in an applicable engine test stand. 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

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.

Engines

Engines include:

fixed or rotary wing gas turbine engine (turbo-jet, turbofan, turboshaft, turboprop), or auxiliary power unit

Modules

Modules may include:

various combinations of gas turbine engine sections as determined by the manufacturer

Application of this unit may relate to:

scheduled or unscheduled maintenance

individual or team-related activities

complex adjusting and testing of engine performance to be carried out under supervision

Procedures and requirements

Procedures and requirements refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

This unit contains employability skills.