sensors Mode-S transponder

4CC576

ICAO 24-bit transponder address

Currently assigned to TF-ICI · BOEING 737 MAX 8

Hex
4CC576
Octal
23142566
Decimal
5,031,286
Tail
TF-ICI
Type
B38M
No current signal · last broadcast 20h ago
Flights observed
8
Distinct callsigns
6
Country
-
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 4CC576.

Callsign history 6 distinct

Callsign Airline Flights Last seen
ICE43E Icelandair 2 2026-04-13
ICE342 Icelandair 2 2026-04-13
ICE7EZ - 1 2026-04-12
ICE42P - 1 2026-04-14
ICE40A - 1 2026-04-14
ICE343 - 1 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 ICE40A - Apr 14, 08:55 UTCApr 14, 09:05 UTC10m
2026-04-14 ICE42P - Apr 14, 06:10 UTCApr 14, 06:35 UTC25m
2026-04-13 ICE43E KEF → BWI Apr 13, 21:15 UTCApr 13, 23:40 UTC2h 25m
2026-04-13 ICE43E KEF → BWI Apr 13, 17:35 UTCApr 13, 17:40 UTC5m
2026-04-13 ICE343 HEL → KEF Apr 13, 12:30 UTCApr 13, 15:40 UTC3h 10m
2026-04-13 ICE342 KEF → HEL Apr 13, 08:20 UTCApr 13, 11:20 UTC3h 0m
2026-04-13 ICE342 KEF → HEL Apr 13, 08:10 UTCApr 13, 11:20 UTC3h 10m
2026-04-12 ICE7EZ - Apr 12, 18:00 UTCApr 12, 18:35 UTC35m

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-ICI page for operator, model, and routing details .

Mode-S 4CC576 frequently asked

What is Mode-S code 4CC576?
4CC576 is an ICAO 24-bit transponder address. Assigned to TF-ICI.
Is 4CC576 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC576, octal 23142566, decimal 5,031,286.
What flights does 4CC576 operate?
Mode-S 4CC576 has broadcast 6 distinct callsigns, including ICE43E, ICE342, ICE7EZ, ICE42P, ICE40A.