Best Practices for Using Ground-to-Air Signals Near Water?

Choosing the Right Signals

When signaling for help near water, use a combination of visual and auditory signals to maximize visibility from the air. Three bright orange or yellow flags attached to a line (at least 3 feet high and 10 feet long) is an effective signal, especially if flown during the day. If night signaling is necessary, use flares that are specifically designed for aviation.

Signal Placement and Timing

Position your signal near the water’s edge, where it can be seen by low-flying aircraft. Avoid placing signals too close to vegetation or other visual obstructions. Signaling during daylight hours (typically between 9 am and 3 pm) is more effective than nighttime signaling. Aim for a 3-minute signaling sequence, where 2 minutes are spent signaling with the most attention-grabbing method, followed by 1 minute of quiet to listen for a response.