Basics
Calling for rescue: signals
You need to be found: lost, trapped, or with no way out.
Do this nowTap each step when done
- 1Call 911 even with one bar. Say where you are first.
- 2If it won't go through, text 911: location and emergency.
- 3Save battery: low-power mode; airplane mode, and check every hour.
- 4Whistle: 3 long blasts, pause, repeat.
- 5Mirror: aim the flash with your fingers in a V toward aircraft.
- 6SOS with light or knocks: 3 short, 3 long, 3 short.
- 7Mark the ground in large letters: V = help, X = medical help.
Don't
- Don't hang up on 911 until they tell you to.
- Don't move after the call unless they ask you to.
- Don't flash the cockpit once they've seen you.
- Don't approach a helicopter from behind.
Have ready
- Pea-less whistle, around your neck or in your backpack.
- Signal mirror and flashlight.
- Charged power bank and its cable.
- Bright-colored clothing or tarp.
Key factThree of anything means distress: 3 whistle blasts, 3 flashes, 3 fires in a triangle.
More detail
Reviewed: Nov 2026 · Sources: Chapter 8 · Orientation, navigation, and rescue…
