Elements and Performance Criteria

RANGE STATEMENT
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.
Instrument systems and components
Instrument systems and components may include:
1. Flight instruments including pitot/static systems, Airspeed Indicators (ASIs), Vertical Speed Indicators (VSIs), altimeters, altitude alerting and reporting, turn and bank and slip/turn coordinators, Directional Gyros (DGs), Artificial Horizons (AHs) (air and electrically driven)
2. Machmeters, air data systems, angle of attack, stall warning and avoidance systems
3. Flight Data Recorders (FDRs)
4. Engine indication systems
5. Magnetic compasses and Attitude and Heading Reference Systems (AHRS)
6. Miscellaneous instrument systems including pressure measurement, fuel quantity, fuel flow, position indication, voltage and frequency, current and power
7. Ground Proximity Warning Systems (GPWS)
Application
Application of this unit may relate to:
Scheduled or unscheduled maintenance activities
Individual or team related activities
Procedures and requirements
Refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

EVIDENCE GUIDE
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 inspect, test and troubleshoot aircraft instrument systems and components while observing 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 inspection applications (including the timely involvement of supervisors or other trades) associated with aircraft instrument systems and components. It is essential that cleanliness requirements and safety precautions applicable to the system being maintained are fully observed, understood and complied with. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical.
Evidence of transferability of skills and knowledge related to inspection is essential. This is to be demonstrated through application across a range of aircraft instrument systems and components listed in the Range Statement. 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 system and at least one major system component/ line replaceable unit (LRU) from each of Groups 1 to 7 (Group 7 may be omitted where it is not applicable to the enterprise) listed in the Range Statement. This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry .

Context of and specific resources for assessment
Competency should be assessed in the workplace or simulated workplace using tools and equipment specified in the maintenance manuals. It is also expected that general and special purpose tools, test and ground support equipment would be used where appropriate.

Method of assessment

Guidance information for assessment