Apparatus

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sensors Mode-S transponder

4CC53B

ICAO 24-bit transponder address

Currently assigned to TF-ICM · BOEING 737 MAX 8

Hex
4CC53B
Octal
23142473
Decimal
5,031,227
Tail
TF-ICM
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
190
Distinct callsigns
20
Country
-
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CC53B.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ICE11P Icelandair 8 2026-05-29
ICE56K Icelandair 6 2026-05-20
ICE55L Icelandair 6 2026-05-19
ICE648 Icelandair 5 2026-05-28
ICE547 Icelandair 5 2026-05-28
ICE473 Icelandair 5 2026-05-29
ICE472 Icelandair 5 2026-05-29
ICE42P Icelandair 5 2026-05-16
ICE2F Icelandair 5 2026-05-19
ICE1A Icelandair 5 2026-05-24
ICE10V Icelandair 5 2026-05-14
ICE9V Icelandair 4 2026-05-13
ICE9L Icelandair 4 2026-04-25
ICE83C Icelandair 4 2026-05-25
ICE82B Icelandair 4 2026-05-25
ICE76V Icelandair 4 2026-05-26
ICE75T Icelandair 4 2026-05-26
ICE649 Icelandair 4 2026-05-27
ICE546 Icelandair 4 2026-05-28
ICE43E Icelandair 4 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ICE88E SEA → KEF May 30, 06:50 UTCMay 30, 07:55 UTC1h 5m
2026-05-29 ICE11P KEF → SEA May 29, 20:10 UTCMay 30, 03:40 UTC7h 30m
2026-05-29 ICE473 LGW → KEF May 29, 14:50 UTCMay 29, 17:40 UTC2h 50m
2026-05-29 ICE472 KEF → LGW May 29, 10:45 UTCMay 29, 13:25 UTC2h 40m
2026-05-29 ICE49C CDG → KEF May 29, 05:15 UTCMay 29, 08:15 UTC3h 0m
2026-05-29 ICE48P KEF → CDG May 29, 00:55 UTCMay 29, 03:55 UTC3h 0m
2026-05-28 ICE547 CDG → KEF May 28, 15:30 UTCMay 28, 18:30 UTC3h 0m
2026-05-28 ICE546 KEF → CDG May 28, 11:00 UTCMay 28, 14:00 UTC3h 0m
2026-05-28 ICE648 IAD → KEF May 28, 08:40 UTCMay 28, 09:00 UTC20m
2026-05-28 ICE648 IAD → KEF May 28, 03:40 UTCMay 28, 05:35 UTC1h 55m
2026-05-27 ICE649 KEF → IAD May 27, 20:10 UTCMay 28, 02:10 UTC6h 0m
2026-05-27 ICE99K CPH → KEF May 27, 15:10 UTCMay 27, 18:30 UTC3h 20m
2026-05-27 ICE98C KEF → CPH May 27, 10:50 UTCMay 27, 13:10 UTC2h 20m
2026-05-26 ICE75T OSL → KEF May 26, 15:20 UTCMay 26, 17:59 UTC2h 40m
2026-05-26 ICE76V KEF → OSL May 26, 11:20 UTCMay 26, 13:29 UTC2h 10m
2026-05-26 ICE604 YYZ → KEF May 26, 03:35 UTCMay 26, 08:30 UTC4h 55m
2026-05-25 ICE605 KEF → YYZ May 25, 20:24 UTCMay 26, 01:55 UTC5h 30m
2026-05-25 ICE83C ARN → KEF May 25, 15:20 UTCMay 25, 18:35 UTC3h 15m
2026-05-25 ICE82B KEF → ARN May 25, 11:20 UTCMay 25, 13:50 UTC2h 30m
2026-05-25 ICE2B IAD → KEF May 25, 01:55 UTCMay 25, 06:50 UTC4h 55m
2026-05-24 ICE1A KEF → IAD May 24, 21:25 UTCMay 24, 23:46 UTC2h 21m
2026-05-24 ICE1A KEF → IAD May 24, 18:00 UTCMay 24, 18:10 UTC10m
2026-05-24 ICE533 MUC → KEF May 24, 12:50 UTCMay 24, 16:25 UTC3h 35m
2026-05-24 ICE532 KEF → MUC May 24, 07:40 UTCMay 24, 11:15 UTC3h 35m
2026-05-23 ICE547 CDG → KEF May 23, 16:00 UTCMay 23, 19:05 UTC3h 6m
2026-05-23 ICE546 KEF → CDG May 23, 11:30 UTCMay 23, 14:20 UTC2h 50m
2026-05-23 ICE648 IAD → KEF May 23, 08:55 UTCMay 23, 09:15 UTC20m
2026-05-23 ICE648 IAD → KEF May 23, 03:45 UTCMay 23, 05:25 UTC1h 40m
2026-05-22 ICE649 KEF → IAD May 22, 23:40 UTCMay 23, 02:05 UTC2h 25m
2026-05-22 ICE649 KEF → IAD May 22, 20:15 UTCMay 22, 20:25 UTC10m
2026-05-22 ICE547 CDG → KEF May 22, 15:40 UTCMay 22, 18:40 UTC3h 0m
2026-05-22 ICE546 KEF → CDG May 22, 11:15 UTCMay 22, 14:15 UTC3h 0m
2026-05-22 ICE525 FRA → KEF May 22, 05:35 UTCMay 22, 08:50 UTC3h 15m
2026-05-22 ICE524 KEF → FRA May 22, 00:55 UTCMay 22, 04:00 UTC3h 5m
2026-05-21 ICE99K CPH → KEF May 21, 15:20 UTCMay 21, 18:20 UTC3h 0m
2026-05-21 ICE98C KEF → CPH May 21, 11:20 UTCMay 21, 14:00 UTC2h 40m
2026-05-21 ICE648 IAD → KEF May 21, 04:30 UTCMay 21, 09:40 UTC5h 10m
2026-05-20 ICE649 KEF → IAD May 20, 20:30 UTCMay 21, 02:30 UTC6h 0m
2026-05-20 ICE7EZ AMS → KEF May 20, 15:20 UTCMay 20, 18:10 UTC2h 50m
2026-05-20 ICE6EZ KEF → AMS May 20, 11:15 UTCMay 20, 13:50 UTC2h 35m
2026-05-20 ICE56K JFK → KEF May 20, 04:30 UTCMay 20, 09:30 UTC5h 1m
2026-05-19 ICE55L KEF → JFK May 19, 20:10 UTCMay 20, 01:35 UTC5h 25m
2026-05-19 ICE3K FRA → KEF May 19, 15:35 UTCMay 19, 18:45 UTC3h 10m
2026-05-19 ICE2F KEF → FRA May 19, 10:45 UTCMay 19, 14:05 UTC3h 20m
2026-05-19 ICE2B IAD → KEF May 19, 06:20 UTCMay 19, 06:45 UTC25m
2026-05-19 ICE2B IAD → KEF May 19, 01:15 UTCMay 19, 02:45 UTC1h 30m
2026-05-18 ICE1A KEF → IAD May 18, 21:15 UTCMay 18, 23:10 UTC1h 55m
2026-05-18 ICE1A KEF → IAD May 18, 17:20 UTCMay 18, 17:35 UTC15m
2026-05-18 ICE343 HEL → KEF May 18, 12:25 UTCMay 18, 15:35 UTC3h 10m
2026-05-18 ICE342 KEF → HEL May 18, 07:55 UTCMay 18, 11:05 UTC3h 10m

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

Mode-S 4CC53B frequently asked

What is Mode-S code 4CC53B?
4CC53B is an ICAO 24-bit transponder address. Assigned to TF-ICM.
Is 4CC53B broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC53B, octal 23142473, decimal 5,031,227.
What flights does 4CC53B operate?
Mode-S 4CC53B has broadcast 20 distinct callsigns, including ICE11P, ICE56K, ICE55L, ICE648, ICE547.