PPL » Aircraft Tech Knowledge (A) » ELT Systems
12.50 ELT Systems
12.50.2 Describe the function and operation of an aircraft ELT.
Function:
- Provides a distress signal to assist search and rescue (SAR) in locating an aircraft after an accident
Operation:
- Automatically activates on impact (g-switch) or can be manually activated
- Transmits on:
- 406 MHz (satellite monitored – primary)
- 121.5 MHz (homing frequency for SAR aircraft)
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