Apparatus

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sensors Mode-S transponder

4CC52D

ICAO 24-bit transponder address

Currently assigned to TF-ICO · BOEING 737 MAX 8

Hex
4CC52D
Octal
23142455
Decimal
5,031,213
Tail
TF-ICO
Type
B38M
No current signal · last broadcast Jul 26, 20:10 UTC
Flights observed
435
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 20:10 UTC

Last known position

Most recent position reported by Mode-S 4CC52D.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ICE43E Icelandair 12 2026-07-18
ICE605 - 11 2026-07-19
ICE55L - 11 2026-07-10
ICE56K - 10 2026-07-11
ICE7K - 9 2026-07-05
ICE681 Icelandair 9 2026-07-24
ICE604 - 9 2026-07-20
ICE74A - 8 2026-07-15
ICE73P - 8 2026-07-15
ICE532 Icelandair 8 2026-07-21
ICE42P Icelandair 8 2026-07-19
ICE533 Icelandair 7 2026-07-21
ICE12E Icelandair 7 2026-07-25
ICE83C - 6 2026-07-04
ICE82B - 6 2026-07-04
ICE680 Icelandair 6 2026-07-24
ICE623 Icelandair 6 2026-04-30
ICE547 - 6 2026-07-11
ICE546 - 6 2026-07-11
ICE50G Icelandair 6 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ICE597 BCN → KEF Jul 26, 15:55 UTCJul 26, 20:05 UTC4h 10m
2026-07-26 ICE596 KEF → BCN Jul 26, 10:30 UTCJul 26, 14:00 UTC3h 30m
2026-07-25 ICE50G YVR → KEF Jul 25, 22:50 UTCJul 26, 05:45 UTC6h 55m
2026-07-25 ICE695 KEF → YVR Jul 25, 11:05 UTCJul 25, 18:15 UTC7h 10m
2026-07-25 ICE12E SEA → KEF Jul 25, 02:35 UTCJul 25, 09:35 UTC7h 0m
2026-07-24 ICE681 KEF → SEA Jul 24, 17:20 UTCJul 25, 00:35 UTC7h 15m
2026-07-24 ICE521 FRA → KEF Jul 24, 12:20 UTCJul 24, 15:45 UTC3h 25m
2026-07-24 ICE520 KEF → FRA Jul 24, 07:35 UTCJul 24, 10:30 UTC2h 55m
2026-07-24 ICE680 SEA → KEF Jul 24, 05:25 UTCJul 24, 05:45 UTC20m
2026-07-23 ICE680 SEA → KEF Jul 23, 23:00 UTCJul 24, 03:35 UTC4h 35m
2026-07-23 ICE685 KEF → SEA Jul 23, 11:05 UTCJul 23, 18:40 UTC7h 35m
2026-07-23 ICE535 MUC → KEF Jul 23, 05:50 UTCJul 23, 09:30 UTC3h 40m
2026-07-23 ICE534 KEF → MUC Jul 23, 00:35 UTCJul 23, 03:55 UTC3h 20m
2026-07-22 ICE63L FCO → KEF Jul 22, 14:20 UTCJul 22, 18:55 UTC4h 35m
2026-07-22 ICE62L KEF → FCO Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-22 ICE38C YYZ → KEF Jul 22, 00:55 UTCJul 22, 05:25 UTC4h 30m
2026-07-21 ICE37B KEF → YYZ Jul 21, 17:35 UTCJul 21, 23:20 UTC5h 45m
2026-07-21 ICE533 MUC → KEF Jul 21, 12:20 UTCJul 21, 16:15 UTC3h 55m
2026-07-21 ICE532 KEF → MUC Jul 21, 07:30 UTCJul 21, 10:55 UTC3h 25m
2026-07-21 ICE830 - Jul 21, 05:35 UTCJul 21, 06:00 UTC25m
2026-07-21 ICE830 - Jul 21, 00:40 UTCJul 21, 02:55 UTC2h 15m
2026-07-20 ICE83P - Jul 20, 17:25 UTCJul 20, 23:20 UTC5h 55m
2026-07-20 ICE35E EDI → KEF Jul 20, 13:50 UTCJul 20, 16:05 UTC2h 15m
2026-07-20 ICE34E KEF → EDI Jul 20, 10:15 UTCJul 20, 12:20 UTC2h 5m
2026-07-20 ICE604 YYZ → KEF Jul 20, 03:50 UTCJul 20, 08:55 UTC5h 5m
2026-07-19 ICE605 - Jul 19, 20:45 UTCJul 20, 02:15 UTC5h 30m
2026-07-19 ICE21V MXP → KEF Jul 19, 15:20 UTCJul 19, 19:20 UTC4h 0m
2026-07-19 ICE22M - Jul 19, 09:50 UTCJul 19, 13:20 UTC3h 30m
2026-07-19 ICE42P BWI → KEF Jul 19, 03:15 UTCJul 19, 08:35 UTC5h 20m
2026-07-18 ICE43E KEF → BWI Jul 18, 23:30 UTCJul 19, 00:15 UTC45m
2026-07-18 ICE43E KEF → BWI Jul 18, 21:10 UTCJul 18, 23:25 UTC2h 15m
2026-07-18 ICE43E KEF → BWI Jul 18, 17:45 UTCJul 18, 18:00 UTC15m
2026-07-18 ICE533 MUC → KEF Jul 18, 12:25 UTCJul 18, 16:15 UTC3h 50m
2026-07-18 ICE532 - Jul 18, 07:50 UTCJul 18, 11:05 UTC3h 15m
2026-07-18 ICE38C YYZ → KEF Jul 18, 00:55 UTCJul 18, 05:50 UTC4h 56m
2026-07-17 ICE37B KEF → YYZ Jul 17, 21:50 UTCJul 17, 22:55 UTC1h 5m
2026-07-17 ICE37B KEF → YYZ Jul 17, 17:35 UTCJul 17, 17:44 UTC10m
2026-07-17 ICE9L ZRH → KEF Jul 17, 12:35 UTCJul 17, 16:19 UTC3h 45m
2026-07-17 ICE12C KEF → ZRH Jul 17, 07:30 UTCJul 17, 10:50 UTC3h 20m
2026-07-17 ICE50G - Jul 17, 05:15 UTCJul 17, 05:30 UTC15m
2026-07-16 ICE50G - Jul 16, 22:40 UTCJul 17, 03:25 UTC4h 45m
2026-07-16 ICE695 - Jul 16, 10:55 UTCJul 16, 18:15 UTC7h 20m
2026-07-16 ICE525 FRA → KEF Jul 16, 05:40 UTCJul 16, 08:50 UTC3h 10m
2026-07-16 ICE524 - Jul 16, 00:55 UTCJul 16, 04:10 UTC3h 15m
2026-07-15 ICE275 - Jul 15, 20:35 UTCJul 15, 23:15 UTC2h 40m
2026-07-15 ICE274 KEF → BLL Jul 15, 16:50 UTCJul 15, 19:25 UTC2h 35m
2026-07-15 ICE73P BRU → KEF Jul 15, 12:40 UTCJul 15, 15:40 UTC3h 0m
2026-07-15 ICE74A - Jul 15, 08:35 UTCJul 15, 11:30 UTC2h 55m
2026-07-14 ICE7LI MXP → KEF Jul 14, 21:20 UTCJul 15, 01:00 UTC3h 39m
2026-07-14 ICE6LC KEF → MXP Jul 14, 16:00 UTCJul 14, 19:40 UTC3h 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-ICO page for operator, model, and routing details .

Mode-S 4CC52D frequently asked

What is Mode-S code 4CC52D?
4CC52D is an ICAO 24-bit transponder address. Assigned to TF-ICO.
Is 4CC52D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC52D, octal 23142455, decimal 5,031,213.
What flights does 4CC52D operate?
Mode-S 4CC52D has broadcast 20 distinct callsigns, including ICE43E, ICE605, ICE55L, ICE56K, ICE7K.