Google Links

Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Inspect aircraft advanced instrument systems and components.
   • Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify specific inspection requirements.
   • Isolation tags are checked and aircraft configured for safe system inspection and operation in accordance with the applicable maintenance manual.
   • Instrument system components are visually or physically checked for external signs of defects in accordance with applicable maintenance manual.
   • Defects are correctly identified and reported.
2. Test/adjust aircraft advanced instrument systems and components
   • Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation.
   • Instrument system is functionally tested, in accordance with maintenance manual, for evidence of serviceability or malfunction.
   • System calibration or adjustments are performed in accordance with maintenance manual, as appropriate
3. Troubleshoot aircraft advanced instrument systems
   • Available information from maintenance documentation, inspection and test results is used, where necessary, to assist in fault determination.
   • Maintenance manual fault diagnosis guides and logic processes are used to ensure efficient and accurate troubleshooting.
   • Specialist advice is obtained, where required, to assist with the troubleshooting process.
   • 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.
   • Determine rectification requirements.

Required Skills

Required skills

Look for evidence that confirms skills in Recognition of system and component defectsexternal damage correct installation connection of plugs terminations attaching hardware including cablingharnesses and security in flight instruments pitotstatic systems navigation systems compasses and Attitude And Heading Reference Systems AHRS Ground Proximity Warning System GPWS position indicators engineauxiliary system indication systems and system components Applying logic processes taking and interpreting system measurements use test equipment and appropriate wiring diagrams and manuals to isolate instrument and display system malfunctions in the listed systems Performing system functional tests and checks to isolate system faults and assess post maintenance serviceability Application of relevant OHS practices Use of approved maintenance documentation and aircraft publications relating to the instrument and display systems being maintained

Required knowledge

Look for evidence that confirms knowledge of Component attachment methods Connection of hardware Instrument system maintenance requirements and testing and troubleshooting procedures The basic layout block diagram level function and operation of flight instruments including Airspeed Indicators ASIs Vertical Speed Indicators VSIs air data systems and components Machmeters altimeters including servo and encoding altimeters Turn and slip indicators Artificial Horizons AHs Directional Gyros DGs angle of attack and stall warningavoidance systems pitotstatic systems navigation systems direct reading compasses gyro compasses AHRS GPWS Turbine engine instruments including temperature and pressure including thermocouples sensors and transmitters speed including mechanical and electric tachometers thrust including fan propeller and jet torque fuel flow vibration auxiliary transmitterindicator measuring systems including hydraulic pressure and temperature pneumatic pressure transmission oil pressure and temperature fuel remainingused fuel quantity indication component position eg doors flaps speed brakes landing gear Flight Data Recorder FDR systems Explaining the operating principles of the abovelisted 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 and reference systems Explaining the various methods of navigation and describing how they are used by both aircraft conventional and electronic navigational instruments and systems Relevant OHS practices Relevant maintenance manuals Relevant regulatory requirements and standard procedures

Evidence Required

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 advanced 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 testing and troubleshooting applications including the timely involvement of supervisors or other trades associated with aircraft advanced instrument systems and components It is essential that system testing procedures 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 testing and troubleshooting is essential This is to be demonstrated through application across a range of advanced aircraft instrument systems and components listed in the Range Statement 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 aircraftsystem 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 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 to Groups and may be omitted where they are 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

---

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 include:	1. Pitot/static system components, ASIs, VSIs, air data systems and components, Machmeters, altimeters including servo and encoding altimeters, angle of attack and stall warning/avoidance systems 2. Turn and slip indicators, DGs, AHs, AHRS and components, remote reading gyro compass systems and components and direct reading compasses 3. Turbine engine indication systems and components (tachometers, pressure, temperature, engine performance, engine vibration) 4. Transmitter/indicator measuring instrument systems (pressure, temperature and position) 5. Fuel quantity indication and flow systems and components 6. GPWS 7. FDRs.
Troubleshooting	Troubleshooting involves the use of fault finding charts or similar, to line replacement level.
	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

---