Apparatus

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sensors Mode-S transponder

4CC576

ICAO 24-bit transponder address

Currently assigned to TF-ICI · BOEING 737 MAX 8

Hex
4CC576
Octal
23142566
Decimal
5,031,286
Tail
TF-ICI
Type
B38M
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
417
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S 4CC576.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ICE681 Icelandair 17 2026-07-26
ICE12E Icelandair 16 2026-07-19
ICE11P Icelandair 12 2026-07-22
ICE680 - 9 2026-07-13
ICE55L Icelandair 9 2026-07-24
ICE7EZ Icelandair 8 2026-07-20
ICE88E Icelandair 7 2026-07-23
ICE856 - 7 2026-07-20
ICE855 Icelandair 7 2026-07-20
ICE7K - 7 2026-07-16
ICE74A - 7 2026-07-17
ICE73P Icelandair 7 2026-07-17
ICE6EZ - 7 2026-07-20
ICE63L - 7 2026-07-01
ICE62L - 7 2026-07-01
ICE56K Icelandair 7 2026-07-25
ICE533 - 7 2026-07-16
ICE532 - 7 2026-07-16
ICE99K - 6 2026-07-08
ICE98C - 6 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ICE681 KEF → SEA Jul 26, 17:30 UTCJul 26, 21:30 UTC4h 0m
2026-07-26 ICE565 GVA → KEF Jul 26, 12:10 UTCJul 26, 16:05 UTC3h 55m
2026-07-26 ICE564 KEF → GVA Jul 26, 07:40 UTCJul 26, 10:45 UTC3h 5m
2026-07-25 ICE75T OSL → KEF Jul 25, 14:50 UTCJul 25, 17:15 UTC2h 25m
2026-07-25 ICE76V KEF → OSL Jul 25, 11:15 UTCJul 25, 13:30 UTC2h 15m
2026-07-25 ICE56K JFK → KEF Jul 25, 03:45 UTCJul 25, 08:45 UTC5h 0m
2026-07-24 ICE55L KEF → JFK Jul 24, 20:00 UTCJul 25, 01:35 UTC5h 35m
2026-07-24 ICE597 BCN → KEF Jul 24, 14:45 UTCJul 24, 18:50 UTC4h 5m
2026-07-24 ICE596 KEF → BCN Jul 24, 08:35 UTCJul 24, 12:25 UTC3h 50m
2026-07-23 ICE579 LIS → KEF Jul 23, 21:35 UTCJul 24, 01:30 UTC3h 55m
2026-07-23 ICE578 KEF → LIS Jul 23, 16:10 UTCJul 23, 20:05 UTC3h 55m
2026-07-23 ICE88E SEA → KEF Jul 23, 06:50 UTCJul 23, 13:35 UTC6h 45m
2026-07-22 ICE11P KEF → SEA Jul 22, 20:00 UTCJul 23, 03:30 UTC7h 30m
2026-07-22 ICE561 NCE → KEF Jul 22, 14:20 UTCJul 22, 18:20 UTC4h 0m
2026-07-22 ICE560 KEF → NCE Jul 22, 02:45 UTCJul 22, 12:25 UTC9h 40m
2026-07-22 ICE50G YVR → KEF Jul 22, 00:20 UTCJul 22, 00:35 UTC15m
2026-07-21 ICE695 KEF → YVR Jul 21, 11:05 UTCJul 21, 18:15 UTC7h 10m
2026-07-21 ICE525 FRA → KEF Jul 21, 05:30 UTCJul 21, 08:55 UTC3h 25m
2026-07-21 ICE524 KEF → FRA Jul 21, 00:50 UTCJul 21, 03:50 UTC3h 0m
2026-07-20 ICE7EZ AMS → KEF Jul 20, 15:35 UTCJul 20, 18:35 UTC3h 0m
2026-07-20 ICE6EZ - Jul 20, 11:05 UTCJul 20, 13:45 UTC2h 40m
2026-07-20 ICE856 - Jul 20, 09:20 UTCJul 20, 09:40 UTC20m
2026-07-20 ICE856 - Jul 20, 04:00 UTCJul 20, 05:30 UTC1h 30m
2026-07-20 ICE855 KEF → ORD Jul 20, 01:05 UTCJul 20, 02:15 UTC1h 10m
2026-07-19 ICE855 KEF → ORD Jul 19, 20:00 UTCJul 19, 20:15 UTC15m
2026-07-19 ICE7EZ AMS → KEF Jul 19, 15:25 UTCJul 19, 18:20 UTC2h 55m
2026-07-19 ICE6EZ - Jul 19, 11:15 UTCJul 19, 13:45 UTC2h 30m
2026-07-19 ICE12E SEA → KEF Jul 19, 09:35 UTCJul 19, 10:00 UTC25m
2026-07-19 ICE12E SEA → KEF Jul 19, 03:05 UTCJul 19, 07:40 UTC4h 35m
2026-07-18 ICE681 KEF → SEA Jul 18, 17:40 UTCJul 19, 01:15 UTC7h 35m
2026-07-18 ICE521 FRA → KEF Jul 18, 12:40 UTCJul 18, 16:10 UTC3h 30m
2026-07-18 ICE520 KEF → FRA Jul 18, 07:50 UTCJul 18, 10:40 UTC2h 50m
2026-07-17 ICE116 KEF → KEF Jul 17, 19:25 UTCJul 18, 01:05 UTC5h 40m
2026-07-17 ICE73P BRU → KEF Jul 17, 14:00 UTCJul 17, 17:09 UTC3h 10m
2026-07-17 ICE74A KEF → BRU Jul 17, 09:30 UTCJul 17, 12:25 UTC2h 55m
2026-07-17 ICE18L BOS → KEF Jul 17, 03:20 UTCJul 17, 07:55 UTC4h 35m
2026-07-16 ICE7K - Jul 16, 23:35 UTCJul 17, 01:09 UTC1h 35m
2026-07-16 ICE7K - Jul 16, 20:05 UTCJul 16, 20:19 UTC15m
2026-07-16 ICE533 MUC → KEF Jul 16, 13:15 UTCJul 16, 16:40 UTC3h 25m
2026-07-16 ICE532 - Jul 16, 07:45 UTCJul 16, 11:54 UTC4h 10m
2026-07-16 ICE830 - Jul 16, 05:45 UTCJul 16, 06:05 UTC20m
2026-07-16 ICE830 - Jul 16, 00:45 UTCJul 16, 02:40 UTC1h 55m
2026-07-15 ICE83P - Jul 15, 17:10 UTCJul 15, 22:55 UTC5h 45m
2026-07-15 ICE521 FRA → KEF Jul 15, 12:40 UTCJul 15, 15:55 UTC3h 15m
2026-07-15 ICE520 - Jul 15, 07:40 UTCJul 15, 11:10 UTC3h 30m
2026-07-14 ICE581 - Jul 14, 18:45 UTCJul 14, 23:30 UTC4h 44m
2026-07-14 ICE580 - Jul 14, 12:10 UTCJul 14, 17:00 UTC4h 50m
2026-07-14 ICE12E - Jul 14, 02:50 UTCJul 14, 09:25 UTC6h 35m
2026-07-13 ICE681 - Jul 13, 19:25 UTCJul 14, 00:55 UTC5h 30m
2026-07-13 ICE681 - Jul 13, 17:15 UTCJul 13, 17:35 UTC20m

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

Mode-S 4CC576 frequently asked

What is Mode-S code 4CC576?
4CC576 is an ICAO 24-bit transponder address. Assigned to TF-ICI.
Is 4CC576 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC576, octal 23142566, decimal 5,031,286.
What flights does 4CC576 operate?
Mode-S 4CC576 has broadcast 20 distinct callsigns, including ICE681, ICE12E, ICE11P, ICE680, ICE55L.