Apparatus

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sensors Mode-S transponder

4CC547

ICAO 24-bit transponder address

Currently assigned to TF-ICR · BOEING 737 MAX 8

Hex
4CC547
Octal
23142507
Decimal
5,031,239
Tail
TF-ICR
Type
B38M
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
391
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 4CC547.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ICE9V Icelandair 15 2026-07-26
ICE10V - 12 2026-06-21
ICE55L - 10 2026-07-03
ICE681 - 9 2026-06-30
ICE680 Icelandair 8 2026-07-21
ICE343 Icelandair 8 2026-07-25
ICE342 Icelandair 8 2026-07-25
ICE12E - 8 2026-07-01
ICE657 - 7 2026-07-03
ICE56K - 7 2026-07-03
ICE11P Icelandair 7 2026-06-08
ICE821 Icelandair 6 2026-07-23
ICE7EZ - 6 2026-07-13
ICE6EZ - 6 2026-07-13
ICE685 Icelandair 6 2026-07-21
ICE656 - 6 2026-07-04
ICE472 - 6 2026-06-28
ICE9L - 5 2026-06-22
ICE855 - 5 2026-07-13
ICE604 - 5 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ICE9V KEF → ORD Jul 26, 16:45 UTCJul 26, 21:45 UTC5h 0m
2026-07-26 ICE19A LGW → KEF Jul 26, 12:25 UTCJul 26, 15:25 UTC3h 0m
2026-07-26 ICE6H KEF → LGW Jul 26, 08:00 UTCJul 26, 10:30 UTC2h 30m
2026-07-26 ICE42P BWI → KEF Jul 26, 00:40 UTCJul 26, 06:00 UTC5h 20m
2026-07-25 ICE43E KEF → BWI Jul 25, 20:35 UTCJul 25, 23:00 UTC2h 25m
2026-07-25 ICE43E KEF → BWI Jul 25, 17:15 UTCJul 25, 17:30 UTC15m
2026-07-25 ICE343 HEL → KEF Jul 25, 12:20 UTCJul 25, 15:35 UTC3h 15m
2026-07-25 ICE342 KEF → HEL Jul 25, 08:15 UTCJul 25, 11:15 UTC3h 0m
2026-07-25 ICE38C YYZ → KEF Jul 25, 06:10 UTCJul 25, 06:35 UTC25m
2026-07-25 ICE38C YYZ → KEF Jul 25, 01:35 UTCJul 25, 02:40 UTC1h 5m
2026-07-24 ICE37B KEF → YYZ Jul 24, 23:05 UTCJul 25, 00:05 UTC1h 0m
2026-07-24 ICE37B KEF → YYZ Jul 24, 18:50 UTCJul 24, 19:05 UTC15m
2026-07-24 ICE75T OSL → KEF Jul 24, 14:50 UTCJul 24, 17:25 UTC2h 35m
2026-07-24 ICE76V KEF → OSL Jul 24, 11:00 UTCJul 24, 13:10 UTC2h 10m
2026-07-24 ICE820 RDU → KEF Jul 24, 01:20 UTCJul 24, 06:30 UTC5h 10m
2026-07-23 ICE821 KEF → RDU Jul 23, 21:35 UTCJul 23, 23:40 UTC2h 5m
2026-07-23 ICE821 KEF → RDU Jul 23, 17:10 UTCJul 23, 17:25 UTC15m
2026-07-23 ICE7J CDG → KEF Jul 23, 12:40 UTCJul 23, 15:50 UTC3h 10m
2026-07-23 ICE8K KEF → CDG Jul 23, 08:15 UTCJul 23, 11:05 UTC2h 50m
2026-07-23 ICE830 PIT → KEF Jul 23, 05:45 UTCJul 23, 06:05 UTC20m
2026-07-23 ICE830 PIT → KEF Jul 23, 01:05 UTCJul 23, 02:55 UTC1h 50m
2026-07-22 ICE83P KEF → PIT Jul 22, 17:35 UTCJul 22, 23:35 UTC6h 0m
2026-07-22 ICE15M BER → KEF Jul 22, 12:30 UTCJul 22, 16:15 UTC3h 45m
2026-07-21 ICE680 SEA → KEF Jul 21, 23:00 UTCJul 22, 10:25 UTC11h 25m
2026-07-21 ICE685 KEF → SEA Jul 21, 10:55 UTCJul 21, 18:30 UTC7h 35m
2026-07-21 ICE694 YVR → KEF Jul 21, 02:40 UTCJul 21, 09:30 UTC6h 50m
2026-07-20 ICE45R KEF → YVR Jul 20, 17:35 UTCJul 21, 01:00 UTC7h 25m
2026-07-20 ICE431 GLA → KEF Jul 20, 13:55 UTCJul 20, 16:10 UTC2h 15m
2026-07-20 ICE432 KEF → GLA Jul 20, 10:30 UTCJul 20, 12:15 UTC1h 45m
2026-07-20 ICE648 IAD → KEF Jul 20, 03:35 UTCJul 20, 08:45 UTC5h 10m
2026-07-20 ICE649 - Jul 20, 00:35 UTCJul 20, 02:10 UTC1h 35m
2026-07-19 ICE649 - Jul 19, 20:05 UTCJul 19, 20:25 UTC20m
2026-07-19 ICE99K CPH → KEF Jul 19, 15:05 UTCJul 19, 18:10 UTC3h 5m
2026-07-19 ICE98C KEF → CPH Jul 19, 11:05 UTCJul 19, 13:40 UTC2h 35m
2026-07-18 ICE50G YVR → KEF Jul 18, 23:05 UTCJul 19, 05:45 UTC6h 40m
2026-07-18 ICE695 KEF → YVR Jul 18, 10:45 UTCJul 18, 18:15 UTC7h 30m
2026-07-18 ICE648 IAD → KEF Jul 18, 03:30 UTCJul 18, 08:45 UTC5h 15m
2026-07-17 ICE649 KEF → IAD Jul 17, 20:15 UTCJul 18, 02:09 UTC5h 55m
2026-07-17 ICE949 VCE → KEF Jul 17, 14:50 UTCJul 17, 19:00 UTC4h 10m
2026-07-17 ICE948 - Jul 17, 08:30 UTCJul 17, 12:35 UTC4h 5m
2026-07-17 ICE820 - Jul 17, 06:10 UTCJul 17, 06:29 UTC20m
2026-07-17 ICE820 - Jul 17, 00:50 UTCJul 17, 03:10 UTC2h 20m
2026-07-16 ICE821 KEF → RDU Jul 16, 17:14 UTCJul 16, 23:20 UTC6h 5m
2026-07-16 ICE19A LGW → KEF Jul 16, 12:40 UTCJul 16, 15:14 UTC2h 35m
2026-07-16 ICE6H KEF → LGW Jul 16, 08:00 UTCJul 16, 10:45 UTC2h 45m
2026-07-16 ICE680 - Jul 16, 05:30 UTCJul 16, 05:50 UTC20m
2026-07-15 ICE680 - Jul 15, 23:10 UTCJul 16, 02:25 UTC3h 15m
2026-07-15 ICE685 - Jul 15, 10:55 UTCJul 15, 18:35 UTC7h 40m
2026-07-15 ICE604 YYZ → KEF Jul 15, 03:30 UTCJul 15, 08:30 UTC5h 0m
2026-07-14 ICE605 KEF → YYZ Jul 14, 20:25 UTCJul 15, 01:55 UTC5h 29m

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

Mode-S 4CC547 frequently asked

What is Mode-S code 4CC547?
4CC547 is an ICAO 24-bit transponder address. Assigned to TF-ICR.
Is 4CC547 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC547, octal 23142507, decimal 5,031,239.
What flights does 4CC547 operate?
Mode-S 4CC547 has broadcast 20 distinct callsigns, including ICE9V, ICE10V, ICE55L, ICE681, ICE680.