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Elements and Performance Criteria

1. Determine requirements
   • Engine defect reports (removal tags) or customer order are correctly interpreted and matched by part and serial numbers
   • Piston engine is inspected in accordance with maintenance publications to establish serviceability state and confirm defects, if necessary
   • Piston engine build status is determined and quick engine change (QEC) components are recorded in accordance with standard enterprise procedures
   • Modification status and engine operating hours are clearly established from the engine log book to assist in determining the repair or overhaul requirements for the engine
   • Extent of overhaul or repair is identified and documented in accordance with standard enterprise procedures
2. Disassemble piston engine
   • Where applicable, QEC components are removed from the engine, maintenance requirements are determined, and necessary documentation is raised and packaged with the components
   • Any removed QEC components not requiring maintenance are correctly labelled and stored for reinstallation
   • Engine is installed in work stand and engine is cleaned
   • Engine is disassembled in accordance with maintenance publication and/or enterprise procedures while observing all relevant work health and safety (WHS) procedures, including the use of material safety data sheets (MSDS) and personal protective equipment (PPE)
   • Removed components are cleaned, tagged and inspected for seviceability in accordance with enterprise procedures
   • Components that are not to be reinstalled are disposed of in accordance with enterprise procedures and action is initiated to obtain replacement components
   • Components to be re-fitted are processed for detailed inspection, repair/overhaul and/or modification, as required

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.
Piston engines include:	The engine assembly and components that comprise a QEC unit. Engine types include all cylinder arrangements and fuel types (aviation gasoline, two stroke or diesel)
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 the use of MSDS and PPE

using relevant maintenance documentation, enterprise procedures, specifications and aircraft/component manuals to:

recognise state of serviceability and overhaul or repair requirements for piston engines

accurately and efficiently troubleshoot unserviceabilities and document the causes for piston engines and components

dismantle and inspect piston engine component parts for serviceability

identify and initiate procurement for piston engine component parts/hardware that are discarded

identify and process engine components that require detailed inspection, repair, overhaul or modification.

Evidence of transferability of skills and knowledge related to repair and overhaul is essential. This shall be demonstrated through application across a number of different piston engines. Ability to assess component serviceability and interpret parts requirements will be necessary to supplement the required evidence. Capability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical.

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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:

how to obtain relevant MSDS

the use of applicable items of PPE

WHS procedures

fault diagnosis techniques

system and component operation

engine cleaning and disassembly procedures and component inspection for serviceability, including identification of life expired components

enterprise documentation requirements.

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