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Elements and Performance Criteria

1. Inspect flight management 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
   • Flight management 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 flight management systems and components
   • Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation
   • Flight management system is functionally tested in accordance with maintenance manual for evidence of serviceability or malfunction
3. Troubleshoot flight management 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 using test sets, downloaded maintenance data and fault-finding charts or similar, to line replacement level
   • Specialist advice is obtained, where required, to assist with the troubleshooting process
   • Flight management 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
   • 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.
Flight management systems include:	Flight management computer Control display unit Database unit Global positioning system (GPS) sensor (where applicable to the enterprise) GPS antenna (where applicable to the enterprise)
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:

using hand skills, tools and test equipment in the testing and troubleshooting of flight management systems

recognising system and component defects/external damage, correct installation, connection of plugs, terminations, attaching hardware (including cabling/harnesses) for the system components listed in the Range of Conditions

interpreting the information presented on control display units

applying logic processes and using appropriate wiring diagrams and manuals to isolate flight management system malfunctions

performing system functional tests and checks to isolate system faults and assess post-maintenance serviceability

effectively using maintenance documentation and relevant fault diagnosis guides in the troubleshooting process

applying standard procedures

observing all relevant WHS procedures.

It is essential that system testing procedures, cleanliness requirements and safety precautions applicable to the flight management 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.

This may be demonstrated through application across the components of a flight management system as 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:

standard trade practices relating to tool and test equipment usage and installation/securing of system components

electrical principles and digital electronic theory

the basic layout (block diagram level) of flight management systems

the operating principles of flight management computers, control display units and database units, including the interface with flight control, engine control and navigation systems

the interface with Aircraft Communication Addressing and Reporting System and relevant Aeronautical Radio Incorporated (ARINC) specifications (avionic data bus)

the operation of integral GPS sensors

WHS procedures relating to flight management systems and components

relevant maintenance manuals

relevant regulatory requirements and standard procedures, including software management control

maintenance requirements and troubleshooting procedures.

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