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sensors Mode-S transponder

4CACB0

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-GEA · BOMBARDIER Regional Jet CRJ-900

Hex
4CACB0
Octal
23126260
Decimal
5,024,944
Country
IE
Tail
EI-GEA
Type
CRJ9
No current signal · last broadcast Jul 26, 19:05 UTC
Flights observed
531
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 19:05 UTC

Last known position

Most recent position reported by Mode-S 4CACB0.

Country allocation

The ICAO 24-bit address 4CACB0 falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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
SAS1771 Scandinavian Airlines System 11 2026-07-22
SAS30U - 9 2026-07-26
SAS740 Scandinavian Airlines System 8 2026-06-17
SAS739 Scandinavian Airlines System 8 2026-06-17
SAS40L Scandinavian Airlines System 8 2026-07-26
SAS36F - 8 2026-07-19
SAS1772 - 8 2026-07-18
SAS82T Scandinavian Airlines System 7 2026-07-25
SAS2886 - 7 2026-07-26
SAS2883 Scandinavian Airlines System 7 2026-07-26
SAS2498 Scandinavian Airlines System 7 2026-07-26
SAS2497 Scandinavian Airlines System 7 2026-07-26
SAS1740 Scandinavian Airlines System 7 2026-06-08
SAS99A Scandinavian Airlines System 6 2026-06-09
SAS68H Scandinavian Airlines System 6 2026-06-09
SAS57R - 6 2026-07-21
SAS29Z Scandinavian Airlines System 6 2026-07-22
SAS2657 - 6 2026-07-21
SAS1798 Scandinavian Airlines System 6 2026-06-05
SAS1797 Scandinavian Airlines System 6 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS2883 TRD → CPH Jul 26, 17:45 UTCJul 26, 19:05 UTC1h 20m
2026-07-26 SAS2886 - Jul 26, 15:45 UTCJul 26, 17:00 UTC1h 15m
2026-07-26 SAS30U TLL → CPH Jul 26, 13:25 UTCJul 26, 14:45 UTC1h 20m
2026-07-26 SAS40L ARN → TLL Jul 26, 12:00 UTCJul 26, 12:40 UTC40m
2026-07-26 SAS2498 BLL → ARN Jul 26, 10:00 UTCJul 26, 10:55 UTC55m
2026-07-26 SAS2497 ARN → BLL Jul 26, 08:00 UTCJul 26, 09:00 UTC1h 0m
2026-07-25 SAS64E DUB → ARN Jul 25, 18:45 UTCJul 25, 20:50 UTC2h 5m
2026-07-25 SAS63H ARN → DUB Jul 25, 15:15 UTCJul 25, 17:40 UTC2h 25m
2026-07-25 SAS82T TLL → ARN Jul 25, 13:30 UTCJul 25, 14:10 UTC40m
2026-07-25 SAS40L ARN → TLL Jul 25, 11:55 UTCJul 25, 12:35 UTC40m
2026-07-25 SAS035 UME → ARN Jul 25, 10:10 UTCJul 25, 10:55 UTC45m
2026-07-25 SAS034 ARN → UME Jul 25, 08:10 UTCJul 25, 08:50 UTC40m
2026-07-25 SAS2023 UME → ARN Jul 25, 06:10 UTCJul 25, 06:55 UTC45m
2026-07-24 SAS026 ARN → UME Jul 24, 22:00 UTCJul 24, 22:30 UTC30m
2026-07-24 SAS1484 OSL → ARN Jul 24, 20:00 UTCJul 24, 20:40 UTC40m
2026-07-24 SAS1483 ARN → OSL Jul 24, 18:15 UTCJul 24, 18:55 UTC40m
2026-07-24 SAS2481 BOO → ARN Jul 24, 14:00 UTCJul 24, 15:15 UTC1h 15m
2026-07-24 SAS2482 ARN → BOO Jul 24, 11:50 UTCJul 24, 13:10 UTC1h 20m
2026-07-24 SAS2542 EDI → ARN Jul 24, 08:35 UTCJul 24, 10:20 UTC1h 45m
2026-07-24 SAS2541 ARN → EDI Jul 24, 05:05 UTCJul 24, 07:10 UTC2h 5m
2026-07-23 SAS31A - Jul 23, 19:10 UTCJul 23, 20:00 UTC50m
2026-07-23 SAS2078 - Jul 23, 16:50 UTCJul 23, 18:20 UTC1h 30m
2026-07-23 SAS2079 - Jul 23, 14:45 UTCJul 23, 16:00 UTC1h 15m
2026-07-23 SAS12B - Jul 23, 12:50 UTCJul 23, 13:55 UTC1h 5m
2026-07-23 SAS30P - Jul 23, 10:50 UTCJul 23, 11:50 UTC1h 0m
2026-07-23 SAS69H - Jul 23, 08:50 UTCJul 23, 09:50 UTC1h 0m
2026-07-23 SAS005 - Jul 23, 06:40 UTCJul 23, 07:40 UTC1h 0m
2026-07-23 SAS1004 ARN → LLA Jul 23, 04:50 UTCJul 23, 05:45 UTC55m
2026-07-22 SAS1484 OSL → ARN Jul 22, 20:05 UTCJul 22, 20:50 UTC45m
2026-07-22 SAS1483 ARN → OSL Jul 22, 18:15 UTCJul 22, 19:00 UTC45m
2026-07-22 SAS2498 BLL → ARN Jul 22, 16:10 UTCJul 22, 17:10 UTC1h 0m
2026-07-22 SAS2497 ARN → BLL Jul 22, 14:20 UTCJul 22, 15:20 UTC1h 0m
2026-07-22 SAS29Z HAM → ARN Jul 22, 12:00 UTCJul 22, 13:20 UTC1h 20m
2026-07-22 SAS2645 ARN → HAM Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 SAS1771 TLL → ARN Jul 22, 03:45 UTCJul 22, 04:25 UTC40m
2026-07-21 SAS1790 CPH → TLL Jul 21, 21:05 UTCJul 21, 22:20 UTC1h 15m
2026-07-21 SAS57R - Jul 21, 18:40 UTCJul 21, 20:00 UTC1h 20m
2026-07-21 SAS2657 - Jul 21, 16:20 UTCJul 21, 17:35 UTC1h 15m
2026-07-21 SAS44T - Jul 21, 13:35 UTCJul 21, 14:15 UTC40m
2026-07-21 SAS75G - Jul 21, 12:05 UTCJul 21, 12:50 UTC45m
2026-07-21 SAS22P GVA → CPH Jul 21, 09:25 UTCJul 21, 11:05 UTC1h 40m
2026-07-21 SAS613 CPH → GVA Jul 21, 06:35 UTCJul 21, 08:15 UTC1h 40m
2026-07-21 SAS1758 GDN → CPH Jul 21, 04:00 UTCJul 21, 04:45 UTC45m
2026-07-20 SAS753 - Jul 20, 21:05 UTCJul 20, 21:50 UTC45m
2026-07-20 SAS57R MUC → CPH Jul 20, 18:40 UTCJul 20, 19:55 UTC1h 15m
2026-07-20 SAS2657 CPH → MUC Jul 20, 16:25 UTCJul 20, 17:35 UTC1h 10m
2026-07-20 SAS1713 HEL → CPH Jul 20, 13:35 UTCJul 20, 15:05 UTC1h 30m
2026-07-20 SAS1712 CPH → HEL Jul 20, 11:15 UTCJul 20, 12:30 UTC1h 15m
2026-07-20 SAS52R - Jul 20, 08:25 UTCJul 20, 09:30 UTC1h 5m
2026-07-20 SAS751 CPH → WAW Jul 20, 06:30 UTCJul 20, 07:35 UTC1h 5m

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 EI-GEA page for operator, model, and routing details .

Mode-S 4CACB0 frequently asked

What is Mode-S code 4CACB0?
4CACB0 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-GEA.
Where is Mode-S 4CACB0 registered?
Mode-S code 4CACB0 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CACB0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CACB0, octal 23126260, decimal 5,024,944.
What flights does 4CACB0 operate?
Mode-S 4CACB0 has broadcast 20 distinct callsigns, including SAS1771, SAS30U, SAS740, SAS739, SAS40L.