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Elements and Performance Criteria

1. Prepare for troubleshooting
   • Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify an unserviceability
2. Test/adjust pulse systems
   • Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation
   • Pulse system is functionally tested in accordance with maintenance manual for evidence of serviceability or malfunction while observing all relevant work health and safety (WHS) requirements
   • System calibration or adjustments are performed in accordance with maintenance manual, as appropriate
3. Troubleshoot pulse systems
   • Available information from maintenance documentation and 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 to line replaceable level
   • Specialist advice is obtained, where required, to assist with the troubleshooting process
   • Pulse system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required
   • Rectification requirements are determined

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.
Pulse systems and components include:	Navigation radar Weather radar Radio altimeter (RADALT) Distance measuring equipment (DME) Air traffic control (ATC) transponder Automatic dependent surveillance-broadcast (ADS-B) Doppler Airborne collision avoidance system (ACAS) Displays, indicators, control boxes, antennae, waveguides, transmitters and receivers, and line replaceable units (LRUs)
Procedures and requirements include:	Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

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Performance Evidence

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:

applying relevant WHS practices

using approved maintenance documentation and aircraft publications relating to the pulse system being maintained

recognition of system and component defects/external damage, correct installation, connection of plugs, terminations, and attaching hardware (including cabling/harnesses/ transmission lines) and security in:

radar (navigation/weather) components and interface

ACAS components and interface

radio altitude components and interface

DME components and interface

ATC transponders

ADS-B

doppler navigation system

applying logic processes, taking and interpreting system measurements to accurately and effectively isolate malfunctions within the systems

performing system testing to isolate system malfunctions and assess systems post-maintenance serviceability.

It is essential that system testing procedures, cleanliness requirements and safety precautions applicable to the pulse 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 testing and troubleshooting is essential. This is to be demonstrated through application across a range of aircraft pulse systems and components listed in the Assessment Conditions.

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Knowledge Evidence

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:

component attachment methods

explaining the basic layout (block diagram level), function and operation of:

radar (navigation/weather) components and interface

ACAS components and interface

radio altitude components and interface

distance measuring equipment components and interface

ATC transponders

ADS-B

doppler navigation system

explaining basic principles/functions relating to the above systems and associated with:

basic alternating current (AC) and direct current (DC) circuit theory

digital fundamentals

analogue fundamentals

radar fundamentals

transmission lines, waveguide and antenna characteristics

pulse system maintenance requirements and troubleshooting procedures

relevant WHS practices, including those relating to ground functional testing of radar systems

relevant maintenance manuals

relevant regulatory requirements and standard procedures.

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