Elements and Performance Criteria

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
Air inlet and compressor components
Air inlet and compressor components from fixed or rotary wing gas turbine engines (turbo-jet, turbofan, turboshaft, turboprop) or engine modules, or auxiliary power units and may include:
1. Air inlet structure and blow-in doors where these items are part of an engine change unit or engine module
2. Fan, where applicable
3. Inlet guide vanes
4. Centrifugal or axial flow compressor assemblies (low and high pressure)
5. Compressor bleed valves, where applicable
Repair of component parts
Repair of component parts may include:
6. Finishing or re-finishing of metal surfaces through processes, such as polishing, lapping and blending of damage within maintenance manual limits
7. Removal of corrosion within maintenance manual limits
8. Replacement of seals and gaskets
9. Replacement of bearings
10. Application of surface treatments, such as alodining
11. Restoration of paint finishes
Application
Application of this unit may relate to:
scheduled or unscheduled maintenance
individual or team-related activities
complex testing and adjusting of components, and where this is undertaken, may be carried out under supervision at the appropriate level
Procedures and requirements
Procedures and requirements refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

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 component theory knowledge and use maintenance publications to repair and overhaul air inlet and compressor components from aircraft gas turbine engines and/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 engine components 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 different gas turbine engine components and/or modules. Ability to assess component/module 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. 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 component 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 at least one item from each of Groups 1 to 5 listed in the Range Statement (Groups 2 and 5 may be omitted if not applicable to the enterprise), including demonstration of the repair processes listed in Groups 6 to 11. 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 maintenance documentation. 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