Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CACBD

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CACBD
Octal
23126275
Decimal
5,024,957
Country
IE
Tail
EI-GEH
Type
CRJ9
No current signal · last broadcast 19d ago
Flights observed
375
Distinct callsigns
20
Country
IE
Last broadcast
19d ago

Last known position

Most recent position reported by Mode-S 4CACBD.

Country allocation

The ICAO 24-bit address 4CACBD 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
SAS662 - 10 2026-06-16
SAS661 - 10 2026-06-16
SAS2988 Scandinavian Airlines System 9 2026-06-18
SAS2983 - 9 2026-06-19
SAS87R Scandinavian Airlines System 8 2026-06-08
SAS34J Scandinavian Airlines System 8 2026-06-08
SAS743 Scandinavian Airlines System 7 2026-06-08
SAS742 Scandinavian Airlines System 7 2026-06-07
SAS648 - 6 2026-06-18
SAS647 Scandinavian Airlines System 6 2026-06-17
SAS2582 - 6 2026-06-17
SAS2535 Scandinavian Airlines System 6 2026-05-18
SAS1240 - 6 2026-06-15
SAS658 Scandinavian Airlines System 5 2026-06-13
SAS657 Scandinavian Airlines System 5 2026-06-13
SAS649 Scandinavian Airlines System 5 2026-06-10
SAS2893 Scandinavian Airlines System 5 2026-06-22
SAS2892 - 5 2026-06-22
SAS2581 - 5 2026-06-17
SAS2536 - 5 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-24 BCY041P - Jun 24, 05:44 UTCJun 24, 07:10 UTC1h 25m
2026-06-23 SAS1869 - Jun 23, 12:09 UTCJun 23, 13:00 UTC50m
2026-06-23 SAS1868 CPH → SVG Jun 23, 10:24 UTCJun 23, 11:19 UTC55m
2026-06-23 SAS1630 ESS → CPH Jun 23, 08:30 UTCJun 23, 09:29 UTC1h 0m
2026-06-23 SAS1629 - Jun 23, 06:24 UTCJun 23, 07:29 UTC1h 5m
2026-06-22 SAS1656 STR → CPH Jun 22, 18:30 UTCJun 22, 19:40 UTC1h 10m
2026-06-22 SAS89L CPH → STR Jun 22, 16:20 UTCJun 22, 17:29 UTC1h 10m
2026-06-22 SAS2893 AES → CPH Jun 22, 13:25 UTCJun 22, 14:34 UTC1h 10m
2026-06-22 SAS2892 - Jun 22, 11:09 UTCJun 22, 12:19 UTC1h 10m
2026-06-22 SAS594 BRU → CPH Jun 22, 09:00 UTCJun 22, 10:10 UTC1h 10m
2026-06-22 SAS57B - Jun 22, 06:54 UTCJun 22, 08:04 UTC1h 10m
2026-06-21 SAS2877 - Jun 21, 20:00 UTCJun 21, 20:54 UTC55m
2026-06-21 SAS2876 CPH → BGO Jun 21, 18:10 UTCJun 21, 19:14 UTC1h 5m
2026-06-21 SAS48D - Jun 21, 15:54 UTCJun 21, 16:49 UTC55m
2026-06-21 SAS1549 CPH → AMS Jun 21, 13:39 UTCJun 21, 14:50 UTC1h 10m
2026-06-21 SAS1869 - Jun 21, 11:15 UTCJun 21, 12:10 UTC55m
2026-06-21 SAS1868 CPH → SVG Jun 21, 09:40 UTCJun 21, 10:34 UTC55m
2026-06-21 SAS1674 BER → CPH Jun 21, 07:00 UTCJun 21, 07:40 UTC40m
2026-06-21 SAS1673 - Jun 21, 05:20 UTCJun 21, 05:59 UTC40m
2026-06-20 SAS48D - Jun 20, 17:04 UTCJun 20, 17:59 UTC55m
2026-06-20 SAS1549 - Jun 20, 14:54 UTCJun 20, 16:00 UTC1h 5m
2026-06-20 SAS44T GDN → CPH Jun 20, 12:34 UTCJun 20, 13:09 UTC35m
2026-06-20 SAS75G CPH → GDN Jun 20, 11:05 UTCJun 20, 11:30 UTC25m
2026-06-20 SAS1674 BER → CPH Jun 20, 08:25 UTCJun 20, 09:05 UTC40m
2026-06-20 SAS1673 - Jun 20, 06:35 UTCJun 20, 07:14 UTC40m
2026-06-19 SAS52E PRG → CPH Jun 19, 19:49 UTCJun 19, 20:44 UTC55m
2026-06-19 SAS44L CPH → PRG Jun 19, 17:59 UTCJun 19, 18:59 UTC1h 0m
2026-06-19 SAS461 OSL → CPH Jun 19, 16:19 UTCJun 19, 17:04 UTC45m
2026-06-19 SAS464 OSL → CPH Jun 19, 14:34 UTCJun 19, 15:24 UTC50m
2026-06-19 SAS2987 KRS → CPH Jun 19, 13:04 UTCJun 19, 13:44 UTC40m
2026-06-19 SAS2986 CPH → KRS Jun 19, 11:30 UTCJun 19, 12:09 UTC40m
2026-06-19 SAS21M HAM → CPH Jun 19, 08:29 UTCJun 19, 09:04 UTC35m
2026-06-19 SAS1641 - Jun 19, 06:59 UTCJun 19, 07:29 UTC30m
2026-06-19 SAS2983 KRS → CPH Jun 19, 04:10 UTCJun 19, 04:54 UTC45m
2026-06-18 SAS2988 CPH → KRS Jun 18, 21:20 UTCJun 18, 22:05 UTC45m
2026-06-18 SAS52E PRG → CPH Jun 18, 18:55 UTCJun 18, 19:55 UTC1h 0m
2026-06-18 SAS44L CPH → PRG Jun 18, 17:00 UTCJun 18, 18:00 UTC1h 0m
2026-06-18 SAS1258 AAR → CPH Jun 18, 13:35 UTCJun 18, 13:55 UTC20m
2026-06-18 SAS1257 CPH → AAR Jun 18, 12:20 UTCJun 18, 12:35 UTC15m
2026-06-18 SAS648 HAM → CPH Jun 18, 04:20 UTCJun 18, 05:00 UTC40m
2026-06-17 SAS647 CPH → HAM Jun 17, 19:55 UTCJun 17, 20:30 UTC35m
2026-06-17 SAS2582 - Jun 17, 08:40 UTCJun 17, 10:00 UTC1h 20m
2026-06-17 SAS2581 - Jun 17, 06:30 UTCJun 17, 07:45 UTC1h 15m
2026-06-16 SAS662 MUC → CPH Jun 16, 08:30 UTCJun 16, 09:45 UTC1h 15m
2026-06-16 SAS661 - Jun 16, 06:15 UTCJun 16, 07:25 UTC1h 10m
2026-06-16 SAS2983 KRS → CPH Jun 16, 04:00 UTCJun 16, 04:39 UTC40m
2026-06-15 SAS2988 CPH → KRS Jun 15, 21:40 UTCJun 15, 22:25 UTC45m
2026-06-15 SAS1800 - Jun 15, 18:20 UTCJun 15, 19:45 UTC1h 25m
2026-06-15 SAS1799 CPH → KRK Jun 15, 16:19 UTCJun 15, 17:25 UTC1h 5m
2026-06-15 SAS1258 AAR → CPH Jun 15, 13:50 UTCJun 15, 14:10 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 EI-GEH page for operator, model, and routing details .

Mode-S 4CACBD frequently asked

What is Mode-S code 4CACBD?
4CACBD is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-GEH.
Where is Mode-S 4CACBD registered?
Mode-S code 4CACBD is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CACBD broadcasting right now?
No active broadcast right now. Last signal was 19d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CACBD, octal 23126275, decimal 5,024,957.
What flights does 4CACBD operate?
Mode-S 4CACBD has broadcast 20 distinct callsigns, including SAS662, SAS661, SAS2988, SAS2983, SAS87R.