sensors Mode-S transponder

4CC587

ICAO 24-bit transponder address

Currently assigned to TF-IAG · AIRBUS A-321neo

Hex
4CC587
Octal
23142607
Decimal
5,031,303
Tail
TF-IAG
Type
A21N
Broadcasting now · callsign ICE664 · 29,300 ft
Flights observed
8
Distinct callsigns
5
Country
-
Last broadcast
23h ago

Current position

4CC587 is currently broadcasting. Map zoomed to live position.

Callsign history 5 distinct

Callsign Airline Flights Last seen
ICE665 Icelandair 2 2026-04-13
ICE579 Icelandair 2 2026-04-13
ICE204 - 2 2026-04-13
ICE578 - 1 2026-04-12
ICE205 Icelandair 1 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 ICE665 KEF → PDX Apr 13, 19:50 UTCApr 13, 23:45 UTC3h 55m
2026-04-13 ICE665 KEF → PDX Apr 13, 17:20 UTCApr 13, 20:10 UTC2h 50m
2026-04-13 ICE205 CPH → KEF Apr 13, 12:20 UTCApr 13, 15:05 UTC2h 45m
2026-04-13 ICE204 - Apr 13, 09:30 UTCApr 13, 10:45 UTC1h 15m
2026-04-13 ICE204 - Apr 13, 07:50 UTCApr 13, 08:15 UTC25m
2026-04-13 ICE579 LIS → KEF Apr 13, 00:20 UTCApr 13, 01:55 UTC1h 35m
2026-04-12 ICE579 LIS → KEF Apr 12, 23:55 UTCApr 13, 01:55 UTC2h 0m
2026-04-12 ICE578 - Apr 12, 19:00 UTCApr 12, 19:55 UTC55m

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

Mode-S 4CC587 frequently asked

What is Mode-S code 4CC587?
4CC587 is an ICAO 24-bit transponder address. Assigned to TF-IAG.
Is 4CC587 broadcasting right now?
Yes. Mode-S 4CC587 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC587, octal 23142607, decimal 5,031,303.
What flights does 4CC587 operate?
Mode-S 4CC587 has broadcast 5 distinct callsigns, including ICE665, ICE579, ICE204, ICE578, ICE205.