Apparatus

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sensors Mode-S transponder

4CC4F1

ICAO 24-bit transponder address

Currently assigned to TF-ISP · BOEING 767-300

Hex
4CC4F1
Octal
23142361
Decimal
5,031,153
Tail
TF-ISP
Type
B763
No current signal · last broadcast Jul 26, 21:55 UTC
Flights observed
269
Distinct callsigns
9
Country
-
Last broadcast
Jul 26, 21:55 UTC

Last known position

Most recent position reported by Mode-S 4CC4F1.

Callsign history 9 distinct

Callsign Airline Flights Last seen
ICE720 Icelandair 77 2026-07-26
ICE721 Icelandair 68 2026-07-25
ICE750 Icelandair 59 2026-07-24
ICE751 Icelandair 58 2026-07-24
ICE753 - 2 2026-05-17
ICE710 Icelandair 2 2026-07-26
ICE751Z Icelandair 1 2026-04-23
ICE5711 Icelandair 1 2026-07-25
ICE2LG Icelandair 1 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ICE720 KEF → LGG Jul 26, 19:20 UTCJul 26, 21:55 UTC2h 35m
2026-07-26 ICE710 RZE → KEF Jul 26, 16:05 UTCJul 26, 16:20 UTC15m
2026-07-26 ICE710 RZE → KEF Jul 26, 08:30 UTCJul 26, 11:35 UTC3h 5m
2026-07-25 ICE5711 KEF → BHX Jul 25, 14:20 UTCJul 25, 19:50 UTC5h 30m
2026-07-25 ICE721 KEF → JFK Jul 25, 06:25 UTCJul 25, 11:55 UTC5h 30m
2026-07-25 ICE721 KEF → JFK Jul 25, 01:35 UTCJul 25, 04:40 UTC3h 5m
2026-07-24 ICE750 KEF → LGG Jul 24, 20:05 UTCJul 24, 22:45 UTC2h 40m
2026-07-24 ICE751 LGG → KEF Jul 24, 00:15 UTCJul 24, 03:25 UTC3h 10m
2026-07-23 ICE750 KEF → LGG Jul 23, 19:35 UTCJul 23, 22:10 UTC2h 35m
2026-07-23 ICE751 LGG → KEF Jul 23, 00:55 UTCJul 23, 04:00 UTC3h 5m
2026-07-22 ICE720 KEF → LGG Jul 22, 20:25 UTCJul 22, 23:20 UTC2h 55m
2026-07-22 ICE720 KEF → LGG Jul 22, 18:05 UTCJul 22, 18:25 UTC20m
2026-07-22 ICE720 KEF → LGG Jul 22, 13:45 UTCJul 22, 15:25 UTC1h 40m
2026-07-22 ICE721 KEF → JFK Jul 22, 05:00 UTCJul 22, 05:10 UTC10m
2026-07-22 ICE721 KEF → JFK Jul 22, 00:05 UTCJul 22, 03:15 UTC3h 10m
2026-07-21 ICE750 KEF → LGG Jul 21, 19:40 UTCJul 21, 22:20 UTC2h 40m
2026-07-21 ICE751 - Jul 21, 00:00 UTCJul 21, 03:10 UTC3h 10m
2026-07-20 ICE750 KEF → LGG Jul 20, 19:15 UTCJul 20, 22:00 UTC2h 45m
2026-07-20 ICE751 - Jul 20, 00:30 UTCJul 20, 03:40 UTC3h 10m
2026-07-19 ICE720 KEF → LGG Jul 19, 19:10 UTCJul 19, 21:50 UTC2h 40m
2026-07-18 ICE720 - Jul 18, 17:50 UTCJul 18, 18:10 UTC20m
2026-07-18 ICE720 - Jul 18, 13:15 UTCJul 18, 15:00 UTC1h 45m
2026-07-18 ICE721 - Jul 18, 05:25 UTCJul 18, 11:10 UTC5h 45m
2026-07-18 ICE721 - Jul 18, 00:19 UTCJul 18, 03:35 UTC3h 16m
2026-07-17 ICE750 KEF → LGG Jul 17, 19:15 UTCJul 17, 21:55 UTC2h 40m
2026-07-16 ICE751 - Jul 16, 23:29 UTCJul 17, 02:34 UTC3h 5m
2026-07-16 ICE750 KEF → LGG Jul 16, 19:14 UTCJul 16, 22:05 UTC2h 50m
2026-07-16 ICE751 - Jul 16, 01:30 UTCJul 16, 04:25 UTC2h 55m
2026-07-15 ICE720 - Jul 15, 20:55 UTCJul 15, 23:55 UTC3h 0m
2026-07-15 ICE720 - Jul 15, 14:20 UTCJul 15, 17:50 UTC3h 30m
2026-07-15 ICE720 - Jul 15, 12:55 UTCJul 15, 14:15 UTC1h 20m
2026-07-15 ICE721 - Jul 15, 05:20 UTCJul 15, 11:10 UTC5h 50m
2026-07-15 ICE721 - Jul 15, 00:10 UTCJul 15, 03:05 UTC2h 55m
2026-07-14 ICE750 KEF → LGG Jul 14, 19:35 UTCJul 14, 22:35 UTC3h 0m
2026-07-13 ICE751 - Jul 13, 23:20 UTCJul 14, 02:15 UTC2h 55m
2026-07-13 ICE750 - Jul 13, 19:05 UTCJul 13, 21:55 UTC2h 50m
2026-07-13 ICE751 - Jul 13, 00:20 UTCJul 13, 03:20 UTC3h 0m
2026-07-12 ICE720 - Jul 12, 19:35 UTCJul 12, 22:25 UTC2h 50m
2026-07-11 ICE720 JFK → KEF Jul 11, 14:20 UTCJul 11, 19:30 UTC5h 10m
2026-07-11 ICE721 - Jul 11, 06:45 UTCJul 11, 12:30 UTC5h 45m
2026-07-11 ICE721 - Jul 11, 01:00 UTCJul 11, 04:05 UTC3h 5m
2026-07-10 ICE750 KEF → LGG Jul 10, 19:35 UTCJul 10, 22:25 UTC2h 50m
2026-07-09 ICE751 - Jul 9, 23:50 UTCJul 10, 02:45 UTC2h 55m
2026-07-09 ICE750 KEF → LGG Jul 9, 19:25 UTCJul 9, 22:25 UTC3h 0m
2026-07-09 ICE751 - Jul 9, 00:50 UTCJul 9, 03:45 UTC2h 55m
2026-07-08 ICE720 KEF → LGG Jul 8, 19:55 UTCJul 8, 22:55 UTC3h 0m
2026-07-08 ICE720 JFK → KEF Jul 8, 12:35 UTCJul 8, 17:40 UTC5h 5m
2026-07-08 ICE721 - Jul 8, 09:05 UTCJul 8, 10:30 UTC1h 25m
2026-07-08 ICE721 - Jul 8, 05:10 UTCJul 8, 08:55 UTC3h 45m
2026-07-08 ICE721 LGG → KEF Jul 8, 00:05 UTCJul 8, 03:15 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-ISP page for operator, model, and routing details .

Mode-S 4CC4F1 frequently asked

What is Mode-S code 4CC4F1?
4CC4F1 is an ICAO 24-bit transponder address. Assigned to TF-ISP.
Is 4CC4F1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC4F1, octal 23142361, decimal 5,031,153.
What flights does 4CC4F1 operate?
Mode-S 4CC4F1 has broadcast 9 distinct callsigns, including ICE720, ICE721, ICE750, ICE751, ICE753.