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Elements and Performance Criteria

1. Inspect basic communication and radio navigation 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 while observing all relevant work health and safety (WHS) requirements
   • Communication and radio navigation systems and components are visually or physically checked for external signs of defects in accordance with applicable maintenance manual
   • Defects are correctly identified and reported
2. Functionally test basic communication and radio navigation systems and components
   • Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation
   • Communication and radio navigation systems are functionally tested in accordance with maintenance manual for evidence of serviceability or malfunction
   • Deficiencies are correctly identified and reported
3. Troubleshoot basic communication and radio navigation 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 to line replacement level
   • Specialist advice is obtained, where required, to assist with the troubleshooting process
   • Communication and radio navigation system faults are located and are correctly recorded in maintenance documentation in accordance with standard operating procedures
4. Remove and install basic radio communication and navigation system components
   • System is rendered safe and prepared in accordance with the applicable maintenance manual and isolation tags are fitted, where necessary, to ensure personnel safety
   • Communication and navigation system component removal is carried out in accordance with the applicable maintenance manual while observing all relevant WHS requirements
   • Required maintenance documentation is completed and processed in accordance with standard enterprise procedures
   • Removed components are tagged and packaged in accordance with specified procedures
   • Communication and navigation system components to be installed are checked to confirm correct part numbers, modification status, serviceability and shelf life
   • Physical installation of components is performed in accordance with the applicable maintenance manual and regulatory requirements, ensuring appropriate adjustment/alignment is carried out
   • System is reinstated to correct operational condition in preparation for testing, as necessary

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.
Applicable communication and radio navigation systems and components include:	High frequency (HF) and very high frequency (VHF) communication line replaceable units (LRUs), transmission lines and antennas Automatic direction finding (ADF), very high frequency omni-directional range (VOR) and global navigation system (GNS) navigation system LRUs, transmission lines and antennas Air traffic control (ATC) transponders, transmission lines and antennas Automatic dependent surveillance-broadcast (ADS-B) Emergency location transmitter (ELT)
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 radio frequency and communications system being maintained

locating and identifying radio communication and navigation system components comprising:

HF and VHF communications

VOR, ADF and GNS

ATC transponders

ADS-B

ELT systems

locating and identifying applicable radio system antennas

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

HF and VHF communications systems

VOR, ADF and GNS

ATC transponders

ADS-B

ELT systems

applying logic processes, functional testing and visual inspections to isolate malfunctions within the above systems

functionally testing listed systems to assess post-maintenance serviceability.

It is essential that system testing procedures, cleanliness requirements and safety precautions applicable to the basic communication or radio navigation 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, functional testing and visual troubleshooting is essential. This is to be demonstrated through application across a range of basic aircraft communication and radio navigation 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

connection of hardware and plugs

printed circuit boards

semiconductors

fibre optics

handling precautions for electrostatic sensitive devices

relevant WHS practices

the use of approved maintenance documentation and aircraft publications relating to radio communication and navigation systems and components

the general working principles of communication and navigation systems

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

HF and VHF communications systems

VOR, ADF and GNS navigation systems

ATC transponders

ELT systems

ADS-B systems

radio frequency and communication system maintenance requirements and basic troubleshooting procedures

relevant maintenance manuals

relevant regulatory requirements and standard procedures.

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