Apparatus

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sensors Mode-S transponder

4CAEE0

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAEE0
Octal
23127340
Decimal
5,025,504
Country
IE
Tail
EI-HSA
Type
CRJ9
No current signal · last broadcast 3h ago
Flights observed
348
Distinct callsigns
20
Country
IE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4CAEE0.

Country allocation

The ICAO 24-bit address 4CAEE0 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
SAS29Z Scandinavian Airlines System 11 2026-06-02
SAS2645 Scandinavian Airlines System 10 2026-06-02
SAS073 Scandinavian Airlines System 7 2026-06-02
SAS066 Scandinavian Airlines System 7 2026-06-02
SAS87R Scandinavian Airlines System 6 2026-05-20
SAS728 Scandinavian Airlines System 6 2026-06-01
SAS57F Scandinavian Airlines System 6 2026-06-02
SAS899 Scandinavian Airlines System 5 2026-05-31
SAS898 Scandinavian Airlines System 5 2026-05-31
SAS34J Scandinavian Airlines System 5 2026-05-20
SAS1498 Scandinavian Airlines System 5 2026-05-28
SAS1497 Scandinavian Airlines System 5 2026-05-28
SAS84P - 4 2026-05-24
SAS745 Scandinavian Airlines System 4 2026-05-23
SAS744 Scandinavian Airlines System 4 2026-05-23
SAS711 Scandinavian Airlines System 4 2026-05-27
SAS710 Scandinavian Airlines System 4 2026-05-27
SAS41T Scandinavian Airlines System 4 2026-05-21
SAS183 Scandinavian Airlines System 4 2026-05-06
SAS1790 Scandinavian Airlines System 4 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 SAS4898 BGO → ARN Jun 2, 19:15 UTCJun 2, 20:20 UTC1h 5m
2026-06-02 SAS4899 ARN → BGO Jun 2, 17:30 UTCJun 2, 18:45 UTC1h 15m
2026-06-02 SAS029 IRG → CUQ Jun 2, 15:50 UTCJun 2, 16:30 UTC40m
2026-06-02 SAS028 ARN → UME Jun 2, 14:10 UTCJun 2, 14:50 UTC40m
2026-06-02 SAS29Z HAM → ARN Jun 2, 11:55 UTCJun 2, 13:15 UTC1h 20m
2026-06-02 SAS2645 ARN → HAM Jun 2, 09:40 UTCJun 2, 10:55 UTC1h 15m
2026-06-02 SAS073 OSD → ARN Jun 2, 07:55 UTCJun 2, 08:40 UTC45m
2026-06-02 SAS066 ARN → OSD Jun 2, 06:20 UTCJun 2, 07:15 UTC55m
2026-06-02 SAS57F HEL → ARN Jun 2, 04:35 UTCJun 2, 05:20 UTC45m
2026-06-01 SAS728 HEL → ARN Jun 1, 20:05 UTCJun 1, 20:50 UTC45m
2026-06-01 SAS1021 SFT → ARN Jun 1, 17:55 UTCJun 1, 18:50 UTC55m
2026-06-01 SAS59K CPH → CDG Jun 1, 16:20 UTCJun 1, 17:05 UTC45m
2026-06-01 SAS29Z HAM → ARN Jun 1, 11:55 UTCJun 1, 13:10 UTC1h 15m
2026-06-01 SAS2645 ARN → HAM Jun 1, 09:40 UTCJun 1, 10:55 UTC1h 15m
2026-06-01 SAS073 OSD → ARN Jun 1, 07:55 UTCJun 1, 08:40 UTC45m
2026-06-01 SAS066 ARN → OSD Jun 1, 06:30 UTCJun 1, 07:20 UTC50m
2026-06-01 SAS57F HEL → ARN Jun 1, 04:30 UTCJun 1, 05:10 UTC40m
2026-05-31 SAS728 HEL → ARN May 31, 20:10 UTCMay 31, 20:55 UTC45m
2026-05-31 SAS126 MMX → ARN May 31, 18:20 UTCMay 31, 19:15 UTC55m
2026-05-31 SAS121 ARN → MMX May 31, 16:35 UTCMay 31, 17:25 UTC50m
2026-05-31 SAS719 HEL → ARN May 31, 14:40 UTCMay 31, 15:20 UTC40m
2026-05-31 SAS54G ARN → HEL May 31, 12:55 UTCMay 31, 13:40 UTC45m
2026-05-31 SAS898 BGO → ARN May 31, 10:55 UTCMay 31, 12:00 UTC1h 5m
2026-05-31 SAS899 ARN → BGO May 31, 09:00 UTCMay 31, 10:05 UTC1h 5m
2026-05-30 SAS886 OSL → ARN May 30, 17:50 UTCMay 30, 18:30 UTC40m
2026-05-30 SAS889 ARN → OSL May 30, 16:10 UTCMay 30, 16:50 UTC40m
2026-05-30 SAS99L AMS → ARN May 30, 13:40 UTCMay 30, 15:20 UTC1h 40m
2026-05-30 SAS33P ARN → AMS May 30, 10:25 UTCMay 30, 12:15 UTC1h 50m
2026-05-30 SAS92D ARN → PRG May 30, 07:50 UTCMay 30, 09:25 UTC1h 35m
2026-05-30 SAS97P ARN → PRG May 30, 05:10 UTCMay 30, 06:40 UTC1h 30m
2026-05-30 SAS1771 TLL → ARN May 30, 03:35 UTCMay 30, 04:15 UTC40m
2026-05-29 SAS1772 ARN → TLL May 29, 20:15 UTCMay 29, 20:55 UTC40m
2026-05-29 SAS66P BRU → ARN May 29, 17:10 UTCMay 29, 18:55 UTC1h 45m
2026-05-29 SAS64U ARN → BRU May 29, 14:20 UTCMay 29, 16:05 UTC1h 45m
2026-05-29 SAS496 OSL → ARN May 29, 12:35 UTCMay 29, 13:10 UTC35m
2026-05-29 SAS495 ARN → OSL May 29, 10:50 UTCMay 29, 11:50 UTC1h 0m
2026-05-29 SAS898 BGO → ARN May 29, 08:35 UTCMay 29, 09:40 UTC1h 5m
2026-05-29 SAS899 ARN → BGO May 29, 06:40 UTCMay 29, 07:55 UTC1h 15m
2026-05-29 SAS1771 TLL → ARN May 29, 04:00 UTCMay 29, 04:45 UTC45m
2026-05-28 SAS1772 ARN → TLL May 28, 20:00 UTCMay 28, 20:40 UTC40m
2026-05-28 SAS1498 BLL → ARN May 28, 17:45 UTCMay 28, 18:55 UTC1h 10m
2026-05-28 SAS1497 ARN → BLL May 28, 15:50 UTCMay 28, 16:55 UTC1h 5m
2026-05-28 SAS82T TLL → ARN May 28, 13:00 UTCMay 28, 13:45 UTC45m
2026-05-28 SAS40L ARN → TLL May 28, 11:25 UTCMay 28, 12:10 UTC45m
2026-05-28 SAS2498 BLL → ARN May 28, 08:25 UTCMay 28, 09:35 UTC1h 10m
2026-05-28 SAS2497 ARN → BLL May 28, 06:35 UTCMay 28, 07:35 UTC1h 0m
2026-05-28 SAS57F HEL → ARN May 28, 04:30 UTCMay 28, 05:20 UTC50m
2026-05-27 SAS728 HEL → ARN May 27, 20:15 UTCMay 27, 20:55 UTC40m
2026-05-27 SAS168 GOT → ARN May 27, 18:00 UTCMay 27, 18:50 UTC50m
2026-05-27 SAS35T ARN → GOT May 27, 16:35 UTCMay 27, 17:15 UTC40m

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

Mode-S 4CAEE0 frequently asked

What is Mode-S code 4CAEE0?
4CAEE0 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HSA.
Where is Mode-S 4CAEE0 registered?
Mode-S code 4CAEE0 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEE0 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEE0, octal 23127340, decimal 5,025,504.
What flights does 4CAEE0 operate?
Mode-S 4CAEE0 has broadcast 20 distinct callsigns, including SAS29Z, SAS2645, SAS073, SAS066, SAS87R.