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Elements and Performance Criteria

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

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 components include:	Engine change unit, main components and accessories/drives Control system and major system components Ignition and starter systems and major system components Engine fuel system and major system components Oil system and major system components Air system and major system components
Procedures and requirements include:	Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

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Performance Evidence

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:

recognise through visual/physical inspection external and internal signs of defects/damage to gas turbine engine, components and system components

assist with testing of gas turbine engine and engine system operation.

The underlying skills inherent in this unit should be transferable across a range of inspection applications (including the timely involvement of supervisors or other trades) associated with gas turbine engines, components and systems. It is essential that inspection procedures take into account all safety precautions applicable to the system/component being maintained. Ability to interpret system performance specifications (allowable limits) and apply them in practice is critical and shall be demonstrated through application across the range of systems listed in the Assessment Conditions.

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Knowledge Evidence

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:

gas turbine engine layout and operation:

intakes

compressors

combustion chambers

turbines

exhaust

thrust reversers

accessory drives

bearings and seals

maintenance requirements

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

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

maintenance requirements

relevant maintenance manuals

relevant regulatory requirements and standard procedures.

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