sensors Mode-S transponder

4CC57C

ICAO 24-bit transponder address

Currently assigned to TF-IAC · AIRBUS A-321neo

Hex
4CC57C
Octal
23142574
Decimal
5,031,292
Tail
TF-IAC
Type
A21N
No current signal · last broadcast 19h ago
Flights observed
14
Distinct callsigns
5
Country
-
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 4CC57C.

Callsign history 5 distinct

Callsign Airline Flights Last seen
ICE686 - 4 2026-04-13
ICE99K - 3 2026-04-13
ICE689 Icelandair 3 2026-04-13
ICE98C - 2 2026-04-13
ICE28T - 2 2026-04-14

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 ICE28T - Apr 14, 09:45 UTCApr 14, 10:30 UTC45m
2026-04-14 ICE28T - Apr 14, 08:20 UTCApr 14, 08:45 UTC25m
2026-04-13 ICE99K - Apr 13, 16:15 UTCApr 13, 18:20 UTC2h 5m
2026-04-13 ICE99K - Apr 13, 15:50 UTCApr 13, 18:20 UTC2h 30m
2026-04-13 ICE99K - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m
2026-04-13 ICE98C - Apr 13, 12:50 UTCApr 13, 14:05 UTC1h 15m
2026-04-13 ICE98C - Apr 13, 11:05 UTCApr 13, 11:30 UTC25m
2026-04-13 ICE686 - Apr 13, 09:25 UTCApr 13, 09:45 UTC20m
2026-04-13 ICE686 - Apr 13, 04:20 UTCApr 13, 06:15 UTC1h 55m
2026-04-13 ICE686 - Apr 13, 03:55 UTCApr 13, 06:15 UTC2h 20m
2026-04-13 ICE686 - Apr 13, 02:45 UTCApr 13, 04:15 UTC1h 30m
2026-04-13 ICE689 KEF → MCO Apr 13, 00:20 UTCApr 13, 00:45 UTC25m
2026-04-12 ICE689 KEF → MCO Apr 12, 23:55 UTCApr 13, 00:45 UTC50m
2026-04-12 ICE689 KEF → MCO Apr 12, 17:15 UTCApr 12, 17:30 UTC15m

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

Mode-S 4CC57C frequently asked

What is Mode-S code 4CC57C?
4CC57C is an ICAO 24-bit transponder address. Assigned to TF-IAC.
Is 4CC57C broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC57C, octal 23142574, decimal 5,031,292.
What flights does 4CC57C operate?
Mode-S 4CC57C has broadcast 5 distinct callsigns, including ICE686, ICE99K, ICE689, ICE98C, ICE28T.