List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1. | Inspect aircraft basic instrument systems and components | 1.1 | Relevant maintenance documentation and modification status, including system defect reports where relevant, are used to identify specific inspection requirements |
| | 1.2 | Isolation tags are checked and aircraft configured for safe system inspection and operation in accordance with the applicable maintenance manual |
| | 1.3 | Instrument system components are visually or physically checked for external signs of defects in accordance with applicable maintenance manual while observing all relevant work health and safety (WHS) requirements |
| | 1.4 | Defects are correctly identified and reported |
2. | Test/adjust aircraft basic instrument systems and components | 2.1 | Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation |
| | 2.2 | Instrument system is functionally tested in accordance with maintenance manual for evidence of serviceability or malfunction |
| | 2.3 | System calibration or adjustments are performed in accordance with maintenance manual, as appropriate |
3. | Troubleshoot aircraft basic instrument systems and components | 3.1 | Available information from maintenance documentation, inspection and test results is used, where necessary, to assist in fault determination |
| | 3.2 | Maintenance manual fault diagnosis guides and logic processes are used to ensure efficient and accurate troubleshooting to line replacement level |
| | 3.3 | Specialist advice is obtained, where required, to assist with the troubleshooting process |
| | 3.4 | Instrument system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required, in accordance with standard enterprise procedures |
| | 3.5 | Rectification requirements are determined |
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:
recognition of system and component defects/external damage, correct installation, connection of plugs, terminations, attaching hardware (including cabling/harnesses) and security in:
flight instruments
pitot/static systems
direct reading compasses
remote reading gyro compass systems (may be omitted if not relevant to the enterprise)
piston engine indication systems
gas turbine engine indication systems (may be omitted if not relevant to the enterprise)
electrical systems indication
basic fuel quantity indication systems
pneumatic/vacuum indication systems
applying logic processes, taking and interpreting system measurements, using test equipment and appropriate wiring diagrams and manuals to isolate instrument system malfunctions in the above systems
performing system functional tests and checks to isolate system faults and assess post-maintenance serviceability
applying WHS requirements relevant to instrument system maintenance.
It is essential that system testing procedures, cleanliness requirements and safety precautions applicable to the instrument system being maintained are fully observed, understood and complied with. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice across a range of inspection, testing and troubleshooting applications (including the timely involvement of supervisors or other trades) is critical.
Evidence of transferability of skills and knowledge related to inspection, testing and troubleshooting is essential. This is to be demonstrated through application across a range of basic aircraft instrument systems and components listed in the Assessment Conditions.
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:
the basic layout (block diagram level), function and operation of:
flight systems, including:
altitude (direct reading altimeters)
attitude including DGs and AHs (both air and electrically driven), turn and slip and turn coordinator
airspeed
OAT
remote reading gyro compass systems
piston engine indication systems, including:
direct reading temperature
direct reading pressure (e.g. oil pressure)
speed, including mechanical and electric tachometers
manifold pressure/boost, including aneroid, sylphon bellows and dual compartment types
gas turbine engine indication systems, including:
temperature and pressure
speed, including mechanical and electric tachometers
torque
fuel flow
vibration
auxiliary direct reading systems, including:
electrical
hydraulic pressure
pneumatic pressure and vacuum
basic fuel quantity indication
basic instrument system maintenance and testing requirements, and troubleshooting procedures
WHS requirements relevant to instrument system maintenance
the operating principles of the above systems and associated with:
atmospheric conditions; properties and effects on aircraft instruments and systems
pressure and temperature sensing elements and their use in aircraft instruments
gyroscopes and their use in aircraft instrument systems
electrical fundamentals
direct reading compass installations and calibration
calibration of remote reading gyro compass systems
relevant maintenance manuals
relevant regulatory requirements and standard procedures.
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, and test and ground support equipment would be used where appropriate.
The application of testing procedures should clearly indicate knowledge of system operation, the relationship of individual components and the links with other systems (if applicable) within the limits of the aircraft/system fault finding guide before undertaking any action. The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards.
The following conditions of assessment represent the requirements of the Regulators (ADF and CASA) and maintenance stakeholders and must be rigorously observed.
A person cannot be assessed as competent until it can be demonstrated to the satisfaction of the workplace assessor that the relevant elements and performance criteria of the unit of competency are being achieved under routine supervision on a system and at least one (1) major system component/line replaceable unit (LRU) from each of:
pitot/static systems and components, ASIs, VSIs, OAT, and counter-pointer altimeters
DGs and AHs (air and electrically driven)
turn and bank and slip/turn coordinators
direct reading compasses
remote reading gyro compass system components (may be omitted if not relevant to the organisation)
piston engine indication system components (direct reading measuring instruments and temperature indication)
gas turbine engine indication system components (may be omitted if not relevant to the organisation)
electrical systems indication (voltage, current, power and frequency)
basic fuel quantity indication systems and components
pneumatic/vacuum indication components.
This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry Evidence Guide (for details refer to the Companion Volume Assessment Guidelines).
Assessors must satisfy the requirements of the National Vocational Education and Training Regulator (Australian Skills Quality Authority, or its successors).
Where the unit is to be used for CASA licensing purposes the Assessor must also meet the criteria specified in the CASR Part 147 Manual of Standards.
Individuals being assessed who have already attained MEA275 Maintain basic light aircraft instrument systems and components will have satisfied the requirements of this unit with regard to common range of conditions variables. The Log of Industrial Experience and Achievement records relating to MEA275 Maintain basic light aircraft instrument systems and components may be accepted as also meeting the evidence requirements for this unit in the applicable common areas.