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sensors Mode-S transponder

4CC278

ICAO 24-bit transponder address · allocated to Iceland

Currently assigned to TF-ISN · BOEING 767-300

Hex
4CC278
Octal
23141170
Decimal
5,030,520
Country
IS
Tail
TF-ISN
Type
B763
Broadcasting now · 8,500 ft
Flights observed
363
Distinct callsigns
20
Country
IS
Last broadcast
3h ago

Current position

4CC278 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CC278 falls within the block assigned to Iceland (IS) by ICAO Annex 10, Volume III. Every aircraft registered in Iceland receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ICE630 - 82 2026-07-14
ICE631 - 70 2026-07-13
ICE205 - 46 2026-07-09
ICE204 - 35 2026-07-09
ICE451 - 28 2026-07-13
ICE450 - 24 2026-07-13
ICE8K - 20 2026-07-11
ICE7J - 20 2026-07-11
ICE63L - 9 2026-07-12
ICE62L - 7 2026-07-12
ICE455 - 5 2026-07-11
ICE454 - 4 2026-07-11
ICE546 Icelandair 2 2026-04-15
ICE217 Icelandair 2 2026-05-08
ICE15M Icelandair 2 2026-04-29
ICE7LI Icelandair 1 2026-05-29
ICE6LC Icelandair 1 2026-05-29
ICE547 Icelandair 1 2026-04-15
ICE216 Icelandair 1 2026-05-08
ICE14T Icelandair 1 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ICE630 - Jul 14, 01:10 UTCJul 14, 02:20 UTC1h 10m
2026-07-13 ICE631 - Jul 13, 17:30 UTCJul 13, 22:45 UTC5h 15m
2026-07-13 ICE451 - Jul 13, 15:05 UTCJul 13, 15:30 UTC25m
2026-07-13 ICE451 - Jul 13, 12:50 UTCJul 13, 13:55 UTC1h 5m
2026-07-13 ICE450 - Jul 13, 08:55 UTCJul 13, 11:25 UTC2h 30m
2026-07-13 ICE630 - Jul 13, 07:20 UTCJul 13, 07:35 UTC15m
2026-07-13 ICE630 - Jul 13, 03:05 UTCJul 13, 04:15 UTC1h 10m
2026-07-12 ICE631 KEF → BOS Jul 12, 20:25 UTCJul 13, 01:25 UTC5h 0m
2026-07-12 ICE63L FCO → KEF Jul 12, 14:35 UTCJul 12, 19:05 UTC4h 30m
2026-07-12 ICE62L - Jul 12, 08:20 UTCJul 12, 12:25 UTC4h 5m
2026-07-11 ICE455 - Jul 11, 21:10 UTCJul 12, 00:01 UTC2h 50m
2026-07-11 ICE454 KEF → LHR Jul 11, 16:35 UTCJul 11, 19:10 UTC2h 35m
2026-07-11 ICE7J - Jul 11, 12:15 UTCJul 11, 15:30 UTC3h 15m
2026-07-11 ICE8K - Jul 11, 07:45 UTCJul 11, 10:50 UTC3h 5m
2026-07-11 ICE630 - Jul 11, 05:15 UTCJul 11, 05:31 UTC15m
2026-07-11 ICE630 - Jul 11, 01:05 UTCJul 11, 02:10 UTC1h 5m
2026-07-10 ICE631 - Jul 10, 21:35 UTCJul 10, 22:45 UTC1h 10m
2026-07-10 ICE631 - Jul 10, 17:25 UTCJul 10, 17:35 UTC10m
2026-07-10 ICE451 LHR → KEF Jul 10, 12:45 UTCJul 10, 15:20 UTC2h 35m
2026-07-10 ICE450 KEF → LHR Jul 10, 07:55 UTCJul 10, 10:30 UTC2h 35m
2026-07-09 ICE205 - Jul 9, 14:45 UTCJul 9, 15:10 UTC25m
2026-07-09 ICE205 - Jul 9, 12:15 UTCJul 9, 13:40 UTC1h 25m
2026-07-09 ICE204 - Jul 9, 08:05 UTCJul 9, 10:45 UTC2h 40m
2026-07-09 ICE630 - Jul 9, 01:05 UTCJul 9, 02:15 UTC1h 10m
2026-07-08 ICE631 - Jul 8, 20:55 UTCJul 8, 22:15 UTC1h 20m
2026-07-08 ICE631 - Jul 8, 17:15 UTCJul 8, 17:25 UTC10m
2026-07-08 ICE205 - Jul 8, 15:00 UTCJul 8, 15:15 UTC15m
2026-07-08 ICE205 - Jul 8, 12:15 UTCJul 8, 13:50 UTC1h 35m
2026-07-08 ICE204 - Jul 8, 08:00 UTCJul 8, 10:35 UTC2h 35m
2026-07-07 ICE451 - Jul 7, 12:25 UTCJul 7, 15:20 UTC2h 55m
2026-07-07 ICE450 KEF → LHR Jul 7, 08:05 UTCJul 7, 10:35 UTC2h 30m
2026-07-06 ICE451 - Jul 6, 12:25 UTCJul 6, 15:10 UTC2h 45m
2026-07-06 ICE450 KEF → LHR Jul 6, 08:10 UTCJul 6, 10:45 UTC2h 35m
2026-07-05 ICE63L - Jul 5, 14:20 UTCJul 5, 19:05 UTC4h 45m
2026-07-05 ICE62L - Jul 5, 07:55 UTCJul 5, 11:50 UTC3h 55m
2026-07-04 ICE7J - Jul 4, 12:35 UTCJul 4, 15:50 UTC3h 15m
2026-07-04 ICE8K - Jul 4, 07:50 UTCJul 4, 10:35 UTC2h 45m
2026-07-04 ICE630 - Jul 4, 05:40 UTCJul 4, 06:00 UTC20m
2026-07-04 ICE630 - Jul 4, 01:25 UTCJul 4, 02:30 UTC1h 5m
2026-07-03 ICE631 - Jul 3, 21:15 UTCJul 3, 22:45 UTC1h 30m
2026-07-03 ICE631 - Jul 3, 17:25 UTCJul 3, 17:35 UTC10m
2026-07-03 ICE451 - Jul 3, 12:50 UTCJul 3, 15:40 UTC2h 50m
2026-07-03 ICE450 - Jul 3, 07:55 UTCJul 3, 10:20 UTC2h 25m
2026-07-03 ICE630 - Jul 3, 05:40 UTCJul 3, 05:55 UTC15m
2026-07-03 ICE630 - Jul 3, 01:15 UTCJul 3, 02:25 UTC1h 10m
2026-07-02 ICE631 - Jul 2, 17:25 UTCJul 2, 22:35 UTC5h 10m
2026-07-02 ICE205 CPH → KEF Jul 2, 15:00 UTCJul 2, 15:20 UTC20m
2026-07-02 ICE205 CPH → KEF Jul 2, 12:30 UTCJul 2, 13:50 UTC1h 20m
2026-07-02 ICE204 KEF → CPH Jul 2, 08:20 UTCJul 2, 11:00 UTC2h 40m
2026-07-02 ICE630 - Jul 2, 05:45 UTCJul 2, 05:55 UTC10m

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

Mode-S 4CC278 frequently asked

What is Mode-S code 4CC278?
4CC278 is an ICAO 24-bit transponder address. Allocated to Iceland. Assigned to TF-ISN.
Where is Mode-S 4CC278 registered?
Mode-S code 4CC278 is allocated to Iceland (IS). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CC278 broadcasting right now?
Yes. Mode-S 4CC278 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC278, octal 23141170, decimal 5,030,520.
What flights does 4CC278 operate?
Mode-S 4CC278 has broadcast 20 distinct callsigns, including ICE630, ICE631, ICE205, ICE204, ICE451.