Apparatus

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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 Jul 26, 23:00 UTC
Flights observed
409
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 4CC57C.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ICE686 - 28 2026-07-15
ICE689 - 25 2026-07-14
ICE615 Icelandair 23 2026-07-25
ICE614 Icelandair 21 2026-07-26
ICE623 Icelandair 19 2026-07-26
ICE622 Icelandair 17 2026-07-24
ICE664 Icelandair 11 2026-07-17
ICE99K Icelandair 9 2026-07-24
ICE501 Icelandair 9 2026-07-20
ICE500 Icelandair 9 2026-07-20
ICE98C Icelandair 8 2026-07-24
ICE7J Icelandair 8 2026-05-06
ICE343 Icelandair 8 2026-07-26
ICE342 Icelandair 8 2026-07-26
ICE8K Icelandair 7 2026-05-06
ICE690 Icelandair 7 2026-05-02
ICE5BK - 7 2026-07-15
ICE4BE - 7 2026-07-15
ICE319 - 7 2026-06-19
ICE318 - 7 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ICE623 KEF → EWR Jul 26, 17:25 UTCJul 26, 22:45 UTC5h 20m
2026-07-26 ICE343 HEL → KEF Jul 26, 12:15 UTCJul 26, 15:35 UTC3h 20m
2026-07-26 ICE342 KEF → HEL Jul 26, 07:45 UTCJul 26, 10:55 UTC3h 10m
2026-07-26 ICE614 JFK → KEF Jul 26, 00:55 UTCJul 26, 05:55 UTC5h 0m
2026-07-25 ICE615 KEF → JFK Jul 25, 20:45 UTCJul 25, 23:00 UTC2h 15m
2026-07-25 ICE615 KEF → JFK Jul 25, 17:25 UTCJul 25, 17:40 UTC15m
2026-07-25 ICE15M BER → KEF Jul 25, 12:10 UTCJul 25, 15:30 UTC3h 20m
2026-07-25 ICE14T KEF → BER Jul 25, 07:50 UTCJul 25, 10:45 UTC2h 55m
2026-07-24 ICE99K CPH → KEF Jul 24, 15:05 UTCJul 24, 18:10 UTC3h 5m
2026-07-24 ICE98C KEF → CPH Jul 24, 11:05 UTCJul 24, 13:40 UTC2h 35m
2026-07-24 ICE622 EWR → KEF Jul 24, 04:45 UTCJul 24, 09:15 UTC4h 30m
2026-07-23 ICE623 KEF → EWR Jul 23, 20:45 UTCJul 24, 02:40 UTC5h 55m
2026-07-23 ICE63L FCO → KEF Jul 23, 14:30 UTCJul 23, 19:05 UTC4h 35m
2026-07-23 ICE62L KEF → FCO Jul 23, 08:20 UTCJul 23, 12:10 UTC3h 50m
2026-07-23 ICE622 EWR → KEF Jul 23, 01:55 UTCJul 23, 06:30 UTC4h 35m
2026-07-22 ICE623 KEF → EWR Jul 22, 17:55 UTCJul 22, 23:50 UTC5h 55m
2026-07-22 ICE307 ARN → KEF Jul 22, 12:55 UTCJul 22, 16:20 UTC3h 25m
2026-07-22 ICE622 EWR → KEF Jul 22, 03:45 UTCJul 22, 11:20 UTC7h 35m
2026-07-22 ICE622 EWR → KEF Jul 22, 02:25 UTCJul 22, 03:40 UTC1h 15m
2026-07-21 ICE623 KEF → EWR Jul 21, 21:30 UTCJul 21, 23:45 UTC2h 15m
2026-07-21 ICE623 KEF → EWR Jul 21, 17:55 UTCJul 21, 18:05 UTC10m
2026-07-21 ICE9L ZRH → KEF Jul 21, 12:35 UTCJul 21, 16:25 UTC3h 50m
2026-07-21 ICE12C KEF → ZRH Jul 21, 07:45 UTCJul 21, 11:00 UTC3h 15m
2026-07-20 ICE501 AMS → KEF Jul 20, 14:00 UTCJul 20, 17:00 UTC3h 0m
2026-07-20 ICE500 KEF → AMS Jul 20, 09:50 UTCJul 20, 12:25 UTC2h 35m
2026-07-20 ICE622 EWR → KEF Jul 20, 07:40 UTCJul 20, 08:00 UTC20m
2026-07-20 ICE622 EWR → KEF Jul 20, 03:00 UTCJul 20, 04:55 UTC1h 55m
2026-07-19 ICE623 KEF → EWR Jul 19, 17:35 UTCJul 20, 00:05 UTC6h 30m
2026-07-19 ICE343 HEL → KEF Jul 19, 12:00 UTCJul 19, 15:40 UTC3h 40m
2026-07-19 ICE342 KEF → HEL Jul 19, 07:40 UTCJul 19, 10:35 UTC2h 55m
2026-07-18 ICE85V - Jul 18, 22:10 UTCJul 19, 02:25 UTC4h 15m
2026-07-18 ICE84H - Jul 18, 17:00 UTCJul 18, 20:45 UTC3h 45m
2026-07-18 ICE451 LHR → KEF Jul 18, 12:30 UTCJul 18, 15:30 UTC3h 0m
2026-07-18 ICE450 KEF → LHR Jul 18, 08:05 UTCJul 18, 10:25 UTC2h 20m
2026-07-18 ICE614 JFK → KEF Jul 18, 01:25 UTCJul 18, 06:20 UTC4h 56m
2026-07-17 ICE615 KEF → JFK Jul 17, 21:00 UTCJul 17, 23:10 UTC2h 10m
2026-07-17 ICE615 KEF → JFK Jul 17, 17:30 UTCJul 17, 17:40 UTC10m
2026-07-17 ICE537 PRG → KEF Jul 17, 12:10 UTCJul 17, 15:55 UTC3h 45m
2026-07-17 ICE536 - Jul 17, 07:35 UTCJul 17, 10:50 UTC3h 15m
2026-07-17 ICE664 PDX → KEF Jul 17, 05:25 UTCJul 17, 05:39 UTC15m
2026-07-16 ICE664 PDX → KEF Jul 16, 22:40 UTCJul 17, 03:39 UTC5h 0m
2026-07-16 ICE663 KEF → PDX Jul 16, 11:10 UTCJul 16, 19:10 UTC8h 0m
2026-07-16 ICE662 - Jul 16, 09:15 UTCJul 16, 09:35 UTC20m
2026-07-16 ICE662 - Jul 16, 02:45 UTCJul 16, 06:05 UTC3h 20m
2026-07-15 ICE665 KEF → PDX Jul 15, 17:30 UTCJul 16, 01:25 UTC7h 55m
2026-07-15 ICE5BK BGO → KEF Jul 15, 14:00 UTCJul 15, 16:00 UTC2h 0m
2026-07-15 ICE4BE - Jul 15, 10:45 UTCJul 15, 12:50 UTC2h 5m
2026-07-15 ICE686 MCO → KEF Jul 15, 02:35 UTCJul 15, 09:20 UTC6h 45m
2026-07-14 ICE689 - Jul 14, 21:00 UTCJul 15, 00:35 UTC3h 34m
2026-07-14 ICE689 - Jul 14, 17:20 UTCJul 14, 17:40 UTC20m

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 Jul 26, 23:00 UTC.
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 20 distinct callsigns, including ICE686, ICE689, ICE615, ICE614, ICE623.