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 identify avionic systems and their components, lay out typical systems at block diagram level and identify related maintenance requirements. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency.

Context of and specific resources for assessment

This unit may be assessed off the job in a training environment equipped to provide exposure to the range of system types and components. The candidate must have access to all tools, equipment, materials and documentation required and must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials. The assessment environment should not disadvantage the candidate.

Method of assessment

Guidance information for assessment

Required skills

Look for evidence that confirms skills in:

sketching typical avionic systems at block diagram level

Required knowledge

Look for evidence that confirms knowledge of:

DC and AC power generation, control and distribution

aircraft electrical systems and their components

aircraft electrical system maintenance requirements

the atmosphere

use of synchros and servos

basics of analogue electronics

aircraft instrument measuring systems and their components

aircraft instrument measuring system maintenance requirements

air conditioning and pressurisation systems

air conditioning and pressurisation system maintenance requirements

types of aircraft oxygen systems and their applications

oxygen system maintenance requirements and related cleanliness and safety precautions

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.

Application of this unit may relate to individual or team-related activities

Functions of aircraft electrical systems

Functions of aircraft electrical systems may include:

power generation, control and distribution

lighting

electrically operated systems, such as doors, flap and landing gear systems

system control (e.g. hydraulic, pneumatic, air conditioning, propeller control and anti-skid)

warning systems

ice and rain protection

engine systems

Aircraft electrical system components

Aircraft electrical system components may include:

the major components of each of the above systems that would be shown in a block diagram or schematic

Instrument measuring systems

Instrument measuring systems may include:

engine indication

transmitter/indicator measuring (pressure, temperature and position)

fuel quantity indication and flow indication

Measuring system components

Measuring system components may include:

the major components of each of the above systems that would be shown in a block diagram or schematic

Pressurisation control system components

Pressurisation control system components may include:

the major components of a pressurisation control system that would be shown in a block diagram or schematic

Types of oxygen system

Types of oxygen system may include:

gaseous

liquid

chemical

Oxygen system components may include:

Oxygen system components may include:

the major components of each of the above systems that would be shown in a block diagram or schematic