Apparatus

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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 20d ago
Flights observed
438
Distinct callsigns
20
Country
IE
Last broadcast
20d ago

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 - 9 2026-06-15
SAS740 Scandinavian Airlines System 8 2026-06-17
SAS739 Scandinavian Airlines System 8 2026-06-17
SAS30U - 7 2026-06-18
SAS1740 Scandinavian Airlines System 7 2026-06-08
SAS99A Scandinavian Airlines System 6 2026-06-09
SAS68H Scandinavian Airlines System 6 2026-06-09
SAS40L - 6 2026-06-18
SAS36F Scandinavian Airlines System 6 2026-06-12
SAS1798 Scandinavian Airlines System 6 2026-06-05
SAS1797 Scandinavian Airlines System 6 2026-06-05
SAS1772 Scandinavian Airlines System 6 2026-06-07
SAS1656 Scandinavian Airlines System 6 2026-06-18
SAS1273 - 6 2026-06-19
SAS1240 - 6 2026-06-20
SAS89L Scandinavian Airlines System 5 2026-06-18
SAS898 Scandinavian Airlines System 5 2026-06-17
SAS87R Scandinavian Airlines System 5 2026-06-09
SAS82T Scandinavian Airlines System 5 2026-06-16
SAS743 Scandinavian Airlines System 5 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 BCY041P DUB → LYS Jun 23, 18:55 UTCJun 23, 19:59 UTC1h 5m
2026-06-20 SAS767 - Jun 20, 11:30 UTCJun 20, 12:50 UTC1h 20m
2026-06-20 SAS658 STR → CPH Jun 20, 08:49 UTCJun 20, 09:59 UTC1h 10m
2026-06-20 SAS657 - Jun 20, 06:45 UTCJun 20, 07:59 UTC1h 15m
2026-06-20 SAS1240 - Jun 20, 05:34 UTCJun 20, 05:54 UTC20m
2026-06-19 SAS1273 - Jun 19, 21:19 UTCJun 19, 21:39 UTC20m
2026-06-19 SAS1800 KRK → CPH Jun 19, 18:14 UTCJun 19, 19:34 UTC1h 20m
2026-06-19 SAS1799 CPH → KRK Jun 19, 16:14 UTCJun 19, 17:24 UTC1h 10m
2026-06-19 SAS2893 AES → CPH Jun 19, 13:09 UTCJun 19, 14:15 UTC1h 5m
2026-06-19 SAS2892 - Jun 19, 10:59 UTCJun 19, 12:04 UTC1h 5m
2026-06-19 SAS764 WRO → CPH Jun 19, 08:59 UTCJun 19, 10:09 UTC1h 10m
2026-06-19 SAS763 - Jun 19, 07:34 UTCJun 19, 08:24 UTC50m
2026-06-18 SAS1656 STR → CPH Jun 18, 18:50 UTCJun 18, 20:00 UTC1h 10m
2026-06-18 SAS89L CPH → STR Jun 18, 16:20 UTCJun 18, 17:35 UTC1h 15m
2026-06-18 SAS30U TLL → CPH Jun 18, 13:00 UTCJun 18, 14:40 UTC1h 40m
2026-06-18 SAS40L ARN → TLL Jun 18, 11:25 UTCJun 18, 12:00 UTC35m
2026-06-18 SAS2498 BLL → ARN Jun 18, 08:15 UTCJun 18, 09:15 UTC1h 0m
2026-06-18 SAS2497 ARN → BLL Jun 18, 06:30 UTCJun 18, 07:35 UTC1h 5m
2026-06-17 SAS4898 BGO → ARN Jun 17, 19:20 UTCJun 17, 20:20 UTC1h 0m
2026-06-17 SAS4899 ARN → BGO Jun 17, 17:25 UTCJun 17, 18:30 UTC1h 5m
2026-06-17 SAS739 VNO → ARN Jun 17, 15:20 UTCJun 17, 16:25 UTC1h 5m
2026-06-17 SAS740 ARN → VNO Jun 17, 13:35 UTCJun 17, 14:40 UTC1h 5m
2026-06-17 SAS898 BGO → ARN Jun 17, 11:30 UTCJun 17, 12:35 UTC1h 5m
2026-06-17 SAS96X ARN → BGO Jun 17, 09:35 UTCJun 17, 10:45 UTC1h 10m
2026-06-17 SAS60P - Jun 17, 06:30 UTCJun 17, 07:10 UTC40m
2026-06-17 SAS485 - Jun 17, 04:35 UTCJun 17, 05:15 UTC40m
2026-06-16 SAS725 - Jun 16, 19:05 UTCJun 16, 19:45 UTC40m
2026-06-16 SAS722 ARN → HEL Jun 16, 17:40 UTCJun 16, 18:25 UTC45m
2026-06-16 SAS82T TLL → ARN Jun 16, 13:04 UTCJun 16, 13:50 UTC45m
2026-06-16 SAS40L ARN → TLL Jun 16, 11:30 UTCJun 16, 12:10 UTC40m
2026-06-16 SAS2498 BLL → ARN Jun 16, 08:25 UTCJun 16, 09:34 UTC1h 10m
2026-06-16 SAS2497 ARN → BLL Jun 16, 06:40 UTCJun 16, 07:40 UTC1h 0m
2026-06-15 SAS1498 BLL → ARN Jun 15, 17:40 UTCJun 15, 18:45 UTC1h 5m
2026-06-15 SAS1497 ARN → BLL Jun 15, 15:59 UTCJun 15, 16:59 UTC1h 0m
2026-06-15 SAS82T TLL → ARN Jun 15, 13:00 UTCJun 15, 13:40 UTC40m
2026-06-15 SAS40L ARN → TLL Jun 15, 11:30 UTCJun 15, 12:10 UTC40m
2026-06-15 SAS2498 BLL → ARN Jun 15, 08:15 UTCJun 15, 09:30 UTC1h 15m
2026-06-15 SAS2497 ARN → BLL Jun 15, 06:24 UTCJun 15, 07:25 UTC1h 0m
2026-06-15 SAS1771 TLL → ARN Jun 15, 03:55 UTCJun 15, 04:34 UTC40m
2026-06-14 SAS1790 - Jun 14, 21:25 UTCJun 14, 22:35 UTC1h 10m
2026-06-14 SAS449 GOT → CPH Jun 14, 18:45 UTCJun 14, 19:15 UTC30m
2026-06-14 SAS1444 CPH → GOT Jun 14, 17:35 UTCJun 14, 18:05 UTC30m
2026-06-14 SAS1210 AAL → CPH Jun 14, 16:10 UTCJun 14, 16:40 UTC30m
2026-06-14 SAS1215 CPH → AAL Jun 14, 14:55 UTCJun 14, 15:25 UTC30m
2026-06-14 SAS52R - Jun 14, 08:25 UTCJun 14, 09:30 UTC1h 5m
2026-06-14 SAS751 - Jun 14, 06:35 UTCJun 14, 07:35 UTC1h 0m
2026-06-13 SAS57R MUC → CPH Jun 13, 18:25 UTCJun 13, 19:45 UTC1h 20m
2026-06-13 SAS2657 CPH → MUC Jun 13, 16:20 UTCJun 13, 17:30 UTC1h 10m
2026-06-13 SAS1713 HEL → CPH Jun 13, 13:20 UTCJun 13, 14:45 UTC1h 25m
2026-06-13 SAS1712 CPH → HEL Jun 13, 11:05 UTCJun 13, 12:25 UTC1h 20m

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 20d ago.
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, SAS740, SAS739, SAS30U, SAS1740.