Apparatus

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sensors Mode-S transponder

4CC548

ICAO 24-bit transponder address

Currently assigned to TF-ICD · BOEING 737 MAX 9

Hex
4CC548
Octal
23142510
Decimal
5,031,240
Tail
TF-ICD
Type
B39M
Broadcasting now · callsign ICE520 · 37,000 ft
Flights observed
423
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 21:50 UTC

Current position

4CC548 is currently broadcasting. Map zoomed to live position.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ICE821 - 25 2026-07-13
ICE9V - 22 2026-07-10
ICE1A Icelandair 22 2026-07-25
ICE10V - 19 2026-07-11
ICE820 - 16 2026-07-14
ICE657 Icelandair 16 2026-07-23
ICE825 Icelandair 14 2026-07-22
ICE656 Icelandair 14 2026-07-24
ICE2B Icelandair 14 2026-07-26
ICE824 Icelandair 13 2026-07-23
ICE43E Icelandair 12 2026-07-24
ICE417 Icelandair 12 2026-07-24
ICE416 Icelandair 12 2026-07-24
ICE622 Icelandair 10 2026-05-18
ICE501 - 10 2026-07-14
ICE623 Icelandair 9 2026-05-17
ICE500 - 9 2026-07-14
ICE42P Icelandair 9 2026-07-25
ICE521 Icelandair 8 2026-07-26
ICE520 Icelandair 8 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ICE275 BLL → KEF Jul 26, 20:35 UTCJul 26, 21:50 UTC1h 15m
2026-07-26 ICE274 KEF → BLL Jul 26, 16:50 UTCJul 26, 19:10 UTC2h 20m
2026-07-26 ICE521 FRA → KEF Jul 26, 12:05 UTCJul 26, 15:35 UTC3h 30m
2026-07-26 ICE520 KEF → FRA Jul 26, 07:45 UTCJul 26, 10:25 UTC2h 40m
2026-07-26 ICE2B IAD → KEF Jul 26, 06:00 UTCJul 26, 06:20 UTC20m
2026-07-26 ICE2B IAD → KEF Jul 26, 00:55 UTCJul 26, 03:10 UTC2h 15m
2026-07-25 ICE1A KEF → IAD Jul 25, 20:35 UTCJul 25, 23:00 UTC2h 25m
2026-07-25 ICE1A KEF → IAD Jul 25, 17:20 UTCJul 25, 17:30 UTC10m
2026-07-25 ICE521 FRA → KEF Jul 25, 12:15 UTCJul 25, 15:40 UTC3h 25m
2026-07-25 ICE520 KEF → FRA Jul 25, 07:45 UTCJul 25, 10:35 UTC2h 50m
2026-07-25 ICE42P BWI → KEF Jul 25, 01:05 UTCJul 25, 06:05 UTC5h 0m
2026-07-24 ICE43E KEF → BWI Jul 24, 17:30 UTCJul 24, 23:35 UTC6h 5m
2026-07-24 ICE417 DUB → KEF Jul 24, 11:35 UTCJul 24, 13:45 UTC2h 10m
2026-07-24 ICE416 KEF → DUB Jul 24, 07:45 UTCJul 24, 09:55 UTC2h 10m
2026-07-24 ICE656 MSP → KEF Jul 24, 00:50 UTCJul 24, 06:20 UTC5h 30m
2026-07-23 ICE657 KEF → MSP Jul 23, 17:15 UTCJul 23, 23:25 UTC6h 10m
2026-07-23 ICE419 DUB → KEF Jul 23, 13:20 UTCJul 23, 15:30 UTC2h 10m
2026-07-23 ICE418 KEF → DUB Jul 23, 10:05 UTCJul 23, 12:05 UTC2h 0m
2026-07-23 ICE824 BNA → KEF Jul 23, 02:40 UTCJul 23, 08:20 UTC5h 40m
2026-07-22 ICE825 KEF → BNA Jul 22, 22:35 UTCJul 23, 00:40 UTC2h 5m
2026-07-22 ICE825 KEF → BNA Jul 22, 17:45 UTCJul 22, 18:00 UTC15m
2026-07-22 ICE2B IAD → KEF Jul 22, 03:40 UTCJul 22, 05:25 UTC1h 45m
2026-07-21 ICE1A KEF → IAD Jul 21, 21:05 UTCJul 22, 00:05 UTC3h 0m
2026-07-21 ICE1A KEF → IAD Jul 21, 17:40 UTCJul 21, 17:55 UTC15m
2026-07-21 ICE419 DUB → KEF Jul 21, 13:55 UTCJul 21, 16:10 UTC2h 15m
2026-07-21 ICE418 KEF → DUB Jul 21, 09:55 UTCJul 21, 11:55 UTC2h 0m
2026-07-21 ICE824 BNA → KEF Jul 21, 02:20 UTCJul 21, 08:25 UTC6h 5m
2026-07-20 ICE825 KEF → BNA Jul 20, 17:35 UTCJul 21, 00:15 UTC6h 40m
2026-07-20 ICE419 DUB → KEF Jul 20, 13:45 UTCJul 20, 16:00 UTC2h 15m
2026-07-20 ICE418 KEF → DUB Jul 20, 10:10 UTCJul 20, 12:05 UTC1h 55m
2026-07-20 ICE824 BNA → KEF Jul 20, 02:20 UTCJul 20, 08:30 UTC6h 10m
2026-07-19 ICE825 KEF → BNA Jul 19, 17:30 UTCJul 20, 00:10 UTC6h 40m
2026-07-19 ICE417 DUB → KEF Jul 19, 11:40 UTCJul 19, 14:00 UTC2h 20m
2026-07-19 ICE416 KEF → DUB Jul 19, 07:50 UTCJul 19, 09:55 UTC2h 5m
2026-07-19 ICE656 MSP → KEF Jul 19, 00:45 UTCJul 19, 06:25 UTC5h 40m
2026-07-18 ICE657 KEF → MSP Jul 18, 22:20 UTCJul 18, 23:20 UTC1h 0m
2026-07-18 ICE657 KEF → MSP Jul 18, 17:15 UTCJul 18, 17:30 UTC15m
2026-07-18 ICE824 BNA → KEF Jul 18, 02:09 UTCJul 18, 08:20 UTC6h 11m
2026-07-17 ICE825 KEF → BNA Jul 17, 17:40 UTCJul 18, 00:25 UTC6h 45m
2026-07-17 ICE417 DUB → KEF Jul 17, 11:39 UTCJul 17, 13:55 UTC2h 15m
2026-07-17 ICE416 KEF → DUB Jul 17, 07:55 UTCJul 17, 10:15 UTC2h 20m
2026-07-17 ICE38C YYZ → KEF Jul 17, 01:00 UTCJul 17, 06:05 UTC5h 5m
2026-07-16 ICE37B KEF → YYZ Jul 16, 17:30 UTCJul 16, 22:40 UTC5h 10m
2026-07-16 ICE419 DUB → KEF Jul 16, 13:34 UTCJul 16, 15:49 UTC2h 15m
2026-07-16 ICE418 - Jul 16, 09:50 UTCJul 16, 11:54 UTC2h 5m
2026-07-16 ICE824 - Jul 16, 07:55 UTCJul 16, 08:15 UTC20m
2026-07-16 ICE824 - Jul 16, 02:05 UTCJul 16, 04:25 UTC2h 20m
2026-07-15 ICE825 - Jul 15, 17:30 UTCJul 16, 00:00 UTC6h 30m
2026-07-15 ICE2B IAD → KEF Jul 15, 00:40 UTCJul 15, 05:55 UTC5h 15m
2026-07-14 ICE1A - Jul 14, 20:45 UTCJul 14, 22:55 UTC2h 9m

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

Mode-S 4CC548 frequently asked

What is Mode-S code 4CC548?
4CC548 is an ICAO 24-bit transponder address. Assigned to TF-ICD.
Is 4CC548 broadcasting right now?
Yes. Mode-S 4CC548 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC548, octal 23142510, decimal 5,031,240.
What flights does 4CC548 operate?
Mode-S 4CC548 has broadcast 20 distinct callsigns, including ICE821, ICE9V, ICE1A, ICE10V, ICE820.