Elements and Performance Criteria
- Inspect GNS 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
- GNS 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
- Defects are correctly identified and reported
- Test/adjust GNS and components
- Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation
- GNS 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
- Troubleshoot GNS
- 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 replaceable level
- Specialist advice is obtained, where required, to assist with the troubleshooting process
- GNS 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