sensors Mode-S transponder

4CC573

ICAO 24-bit transponder address

Currently assigned to TF-ICF · BOEING 737 MAX 8

Hex
4CC573
Octal
23142563
Decimal
5,031,283
Tail
TF-ICF
Type
B38M
No current signal · last broadcast 14h ago
Flights observed
14
Distinct callsigns
5
Country
-
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4CC573.

Callsign history 5 distinct

Callsign Airline Flights Last seen
ICE12E - 4 2026-04-13
ICE681 Icelandair 3 2026-04-13
ICE547 - 3 2026-04-13
ICE546 - 2 2026-04-13
ICE318 - 2 2026-04-14

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 ICE318 - Apr 14, 09:45 UTCApr 14, 10:35 UTC50m
2026-04-14 ICE318 - Apr 14, 08:10 UTCApr 14, 08:40 UTC30m
2026-04-13 ICE547 - Apr 13, 16:15 UTCApr 13, 18:40 UTC2h 25m
2026-04-13 ICE547 - Apr 13, 15:50 UTCApr 13, 18:40 UTC2h 50m
2026-04-13 ICE547 - Apr 13, 15:35 UTCApr 13, 16:15 UTC40m
2026-04-13 ICE546 - Apr 13, 12:20 UTCApr 13, 13:50 UTC1h 30m
2026-04-13 ICE546 - Apr 13, 10:55 UTCApr 13, 11:20 UTC25m
2026-04-13 ICE12E - Apr 13, 09:15 UTCApr 13, 09:40 UTC25m
2026-04-13 ICE12E - Apr 13, 04:20 UTCApr 13, 04:30 UTC10m
2026-04-13 ICE12E - Apr 13, 03:55 UTCApr 13, 04:30 UTC35m
2026-04-13 ICE12E - Apr 13, 02:35 UTCApr 13, 04:15 UTC1h 40m
2026-04-13 ICE681 KEF → SEA Apr 13, 00:20 UTCApr 13, 00:35 UTC15m
2026-04-12 ICE681 KEF → SEA Apr 12, 23:55 UTCApr 13, 00:35 UTC40m
2026-04-12 ICE681 KEF → SEA Apr 12, 17:25 UTCApr 12, 20:05 UTC2h 40m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the TF-ICF page for operator, model, and routing details .

Mode-S 4CC573 frequently asked

What is Mode-S code 4CC573?
4CC573 is an ICAO 24-bit transponder address. Assigned to TF-ICF.
Is 4CC573 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC573, octal 23142563, decimal 5,031,283.
What flights does 4CC573 operate?
Mode-S 4CC573 has broadcast 5 distinct callsigns, including ICE12E, ICE681, ICE547, ICE546, ICE318.