Elements and Performance Criteria
- Inspect gas turbine engine system and components
- Isolation tags already attached to the system or related systems are checked and aircraft/engine configured for safe system inspection and operation in accordance with applicable maintenance manual
- Gas turbine engine and/or component are visually or physically checked for external and internal signs of defects in accordance with applicable maintenance manual while observing all relevant work health and safety (WHS) requirements, including the use of material safety data sheets (MSDS) and items of personal protective equipment (PPE)
- Test gas turbine engine system
- Aircraft and gas turbine engine system are correctly prepared in accordance with applicable maintenance manual and connected to appropriate test equipment
- Built-in system test functions and status displays are activated, where applicable, outputs recorded and interpreted
- Assistance is provided with gas turbine engine and/or system operation during prescribed test procedures to establish serviceability and correct function in accordance with applicable maintenance manual
- Prepare for troubleshooting
- Troubleshoot gas turbine engine system
- Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination
- Maintenance manual fault diagnosis guide and logical 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
- Gas turbine engine system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required
- Fault rectification requirements are determined to assist in planning the repair