7700.pl (Squawk Watch PL) is a free website that watches every aircraft over Poland and shows the ones broadcasting an emergency transponder code, with a map, flight track, aircraft type, airline, altitude and speed.
Most of the site is in Polish for now. An English version of the live radar and the alert archive is planned.
7700 – general emergency, 7600 – radio failure, 7500 – unlawful interference (hijack). Most 7700 flights end with a normal, safe landing: the code asks air traffic control for priority and help, it does not mean a crash is likely.
The server checks all aircraft in the Warsaw FIR (EPWW) every 15 seconds. An alert is shown after three consecutive readings with an emergency code (about 45 seconds), so short typing mistakes and glitches do not trigger false alarms. When the aircraft changes its code or leaves the data, the alert ends and is saved in the alert archive with its track on a map.
Departures and arrivals at 16 Polish airports, airport closures from NOTAMs (also in the closures archive) and METAR weather with flight categories (VFR, MVFR, IFR, LIFR).
Press “Włącz alarm w tle” (enable background alerts) on the live radar to get web push notifications, even with the tab closed. Alerts are also posted, in Polish, on the Telegram channel and on X @7700pl.
ADS-B positions and squawks come from the open network adsb.fi, with adsb.lol (ODbL) as a backup. Flight routes come from adsbdb.com, NOTAMs from the FAA NOTAM Management Service and METARs from aviationweather.gov.
We only see what aircraft broadcast over ADS-B. We do not know the reason for an emergency, data can be a few seconds late, and some aircraft (e.g. military, or flying low out of receiver range) may be missing. 7700.pl is an information service, not an official air traffic services system.