The international radiotelephony distress signal. When repeated three times, it indicates imminent and grave danger and that immediate assistance is requested.
Source FAA Pilot/Controller Glossary · checked 2026-08-25
The international radiotelephony distress signal. When repeated three times, it indicates imminent and grave danger and that immediate assistance is requested.
Source FAA Pilot/Controller Glossary · checked 2026-08-25