Squawk (transponder code)
Radio & navigation
← All glossary terms
A squawk is the four-digit transponder code assigned by ATC or set by the pilot. In most of Europe, VFR flights without an assigned code squawk 7000.
- German term
- Squawk (Transpondercode)
Special codes: 7700 emergency, 7600 radio failure, 7500 unlawful interference. Some TMZs and airports publish listening squawks for VFR traffic monitoring their frequency.
In practice
Avoid passing through the special codes when changing the code, and read back assigned squawks.
Related terms
Official sources
Content reviewed: 2026-11
For general information only. Always use official sources, your aircraft's flight manual and current national rules for flight decisions.