Apparatus

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sensors Mode-S transponder

4CAD41

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-SIN · AIRBUS A-320neo

Hex
4CAD41
Octal
23126501
Decimal
5,025,089
Country
IE
Tail
EI-SIN
Type
A20N
No current signal · last broadcast 3h ago
Flights observed
274
Distinct callsigns
20
Country
IE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4CAD41.

Country allocation

The ICAO 24-bit address 4CAD41 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
SAS31B Scandinavian Airlines System 6 2026-04-25
SAS51D Scandinavian Airlines System 5 2026-04-25
SAS1705 Scandinavian Airlines System 5 2026-05-21
SAS2901 Scandinavian Airlines System 4 2026-05-16
SAS035 Scandinavian Airlines System 4 2026-05-12
SAS034 Scandinavian Airlines System 4 2026-05-12
SAS89T Scandinavian Airlines System 3 2026-05-26
SAS87T Scandinavian Airlines System 3 2026-05-22
SAS84F Scandinavian Airlines System 3 2026-05-22
SAS65D Scandinavian Airlines System 3 2026-05-23
SAS64U - 3 2026-04-21
SAS601 Scandinavian Airlines System 3 2026-05-26
SAS51B Scandinavian Airlines System 3 2026-05-23
SAS49K Scandinavian Airlines System 3 2026-05-27
SAS41C Scandinavian Airlines System 3 2026-05-22
SAS41A Scandinavian Airlines System 3 2026-05-18
SAS32J Scandinavian Airlines System 3 2026-05-29
SAS2902 Scandinavian Airlines System 3 2026-05-16
SAS2778 Scandinavian Airlines System 3 2026-05-22
SAS2031 Scandinavian Airlines System 3 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAS7610 ZTH → ARN May 29, 18:00 UTCMay 29, 21:30 UTC3h 30m
2026-05-29 SAS7609 ARN → ZTH May 29, 13:25 UTCMay 29, 16:40 UTC3h 15m
2026-05-29 SAS59Z GOT → ARN May 29, 11:30 UTCMay 29, 12:15 UTC45m
2026-05-29 SAS157 ARN → GOT May 29, 09:50 UTCMay 29, 10:30 UTC40m
2026-05-29 SAS2023 UME → ARN May 29, 08:05 UTCMay 29, 08:55 UTC50m
2026-05-29 SAS024 ARN → UME May 29, 06:25 UTCMay 29, 07:05 UTC40m
2026-05-29 SAS32J GOT → ARN May 29, 04:30 UTCMay 29, 05:10 UTC40m
2026-05-28 SAS448 CPH → GOT May 28, 21:30 UTCMay 28, 22:00 UTC30m
2026-05-28 SAS88P DUB → CPH May 28, 18:35 UTCMay 28, 20:20 UTC1h 45m
2026-05-28 SAS85A CPH → DUB May 28, 15:20 UTCMay 28, 17:15 UTC1h 55m
2026-05-28 SAS431 GOT → CPH May 28, 13:45 UTCMay 28, 14:10 UTC25m
2026-05-28 SAS430 CPH → GOT May 28, 12:15 UTCMay 28, 12:40 UTC25m
2026-05-28 SAS45F CDG → CPH May 28, 09:40 UTCMay 28, 11:15 UTC1h 35m
2026-05-28 SAS21D CPH → CDG May 28, 06:45 UTCMay 28, 08:25 UTC1h 40m
2026-05-27 SAS49K LHR → CPH May 27, 18:45 UTCMay 27, 20:10 UTC1h 25m
2026-05-27 SAS1507 CPH → LHR May 27, 16:05 UTCMay 27, 17:40 UTC1h 35m
2026-05-27 SAS34L CDG → CPH May 27, 12:15 UTCMay 27, 13:40 UTC1h 25m
2026-05-27 SAS44G CPH → CDG May 27, 09:20 UTCMay 27, 11:00 UTC1h 40m
2026-05-27 SAS22H ARN → CPH May 27, 07:10 UTCMay 27, 08:05 UTC55m
2026-05-26 SAS1428 CPH → ARN May 26, 21:40 UTCMay 26, 22:29 UTC50m
2026-05-26 SAS49K LHR → CPH May 26, 19:10 UTCMay 26, 20:29 UTC1h 20m
2026-05-26 SAS1507 CPH → LHR May 26, 16:00 UTCMay 26, 17:35 UTC1h 35m
2026-05-26 SAS2762 WAW → CPH May 26, 13:24 UTCMay 26, 14:30 UTC1h 5m
2026-05-26 SAS2761 CPH → WAW May 26, 11:20 UTCMay 26, 12:20 UTC1h 0m
2026-05-26 SAS89T ZRH → CPH May 26, 08:30 UTCMay 26, 10:10 UTC1h 40m
2026-05-26 SAS601 CPH → ZRH May 26, 06:04 UTCMay 26, 07:24 UTC1h 20m
2026-05-25 SAS584 AGP → CPH May 25, 19:25 UTCMay 25, 22:34 UTC3h 10m
2026-05-25 SAS583 CPH → AGP May 25, 14:40 UTCMay 25, 18:00 UTC3h 20m
2026-05-25 SAS596 KEF → CPH May 25, 10:45 UTCMay 25, 13:15 UTC2h 30m
2026-05-25 SAS595 CPH → KEF May 25, 06:35 UTCMay 25, 09:40 UTC3h 5m
2026-05-24 SAS92U MAD → CPH May 24, 17:35 UTCMay 24, 20:25 UTC2h 50m
2026-05-24 SAS581 CPH → MAD May 24, 12:55 UTCMay 24, 15:40 UTC2h 45m
2026-05-24 SAS70P DUB → CPH May 24, 09:30 UTCMay 24, 11:15 UTC1h 45m
2026-05-24 SAS32F CPH → DUB May 24, 06:20 UTCMay 24, 08:15 UTC1h 55m
2026-05-23 SAS51B BCN → CPH May 23, 17:30 UTCMay 23, 20:10 UTC2h 41m
2026-05-23 SAS65D CPH → BCN May 23, 13:30 UTCMay 23, 15:55 UTC2h 25m
2026-05-23 SAS584 AGP → CPH May 23, 08:55 UTCMay 23, 12:00 UTC3h 5m
2026-05-23 SAS583 CPH → AGP May 23, 04:10 UTCMay 23, 07:30 UTC3h 20m
2026-05-22 SAS2778 CPH → ATH May 22, 16:50 UTCMay 22, 19:55 UTC3h 5m
2026-05-22 SAS2777 ATH → CPH May 22, 12:45 UTCMay 22, 15:30 UTC2h 45m
2026-05-22 SAS41C LHR → CPH May 22, 09:35 UTCMay 22, 11:00 UTC1h 25m
2026-05-22 SAS84F CPH → LHR May 22, 06:25 UTCMay 22, 08:10 UTC1h 45m
2026-05-22 SAS87T GOT → CPH May 22, 04:00 UTCMay 22, 04:20 UTC20m
2026-05-21 SAS448 CPH → GOT May 21, 21:25 UTCMay 21, 21:55 UTC30m
2026-05-21 SAS51B BCN → CPH May 21, 17:20 UTCMay 21, 19:55 UTC2h 35m
2026-05-21 SAS65D CPH → BCN May 21, 13:30 UTCMay 21, 15:50 UTC2h 20m
2026-05-21 SAS41C LHR → CPH May 21, 09:30 UTCMay 21, 10:55 UTC1h 25m
2026-05-21 SAS84F CPH → LHR May 21, 06:25 UTCMay 21, 08:10 UTC1h 45m
2026-05-21 SAS1705 HEL → CPH May 21, 03:20 UTCMay 21, 04:40 UTC1h 20m
2026-05-20 SAS45T CPH → HEL May 20, 21:35 UTCMay 20, 22:50 UTC1h 15m

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

Mode-S 4CAD41 frequently asked

What is Mode-S code 4CAD41?
4CAD41 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-SIN.
Where is Mode-S 4CAD41 registered?
Mode-S code 4CAD41 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD41 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 4CAD41, octal 23126501, decimal 5,025,089.
What flights does 4CAD41 operate?
Mode-S 4CAD41 has broadcast 20 distinct callsigns, including SAS31B, SAS51D, SAS1705, SAS2901, SAS035.