PA.IX.B.K5FAA-S-ACS-6C · Nov 2023Knowledge
Emergency Locator Transmitters (ELTs) and other emergency locating devices.
Emergency Locator Transmitters (ELTs) and other emergency locating devices.
Bottom line
An ELT is a small, self-contained radio transmitter that automatically transmits an emergency signal upon the impact of a crash. An ELT must be inspected within 12 calendar months after the last inspection. In a night emergency landing, if time permits, make distress calls and activate the ELT.
Key numbers
| Number | What it means |
|---|---|
| within 12 calendar months after the last inspection | ELT inspection |
| after more than 1 cumulative hour of transmitter use | Battery replace |
| at 50 percent of battery useful life (or 50 percent of charge life for rechargeable) | Battery life |
| 121.5, 243.0, or 406.0 MHz | ELT frequencies |
FAA references
- AFH Glossary (p. G-6) — FAA-H-8083-3C
- PHAK ch. 9 (p. 9-9) — FAA-H-8083-25C (2023)
- SEA ch. 8 (p. 8-6) — FAA-H-8083-23
- SEA ch. 7 (p. 7-8) — FAA-H-8083-23
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