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sensors Mode-S transponder

4CAD40

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAD40
Octal
23126500
Decimal
5,025,088
Country
IE
Tail
EI-SIM
Type
A20N
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
538
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S 4CAD40.

Country allocation

The ICAO 24-bit address 4CAD40 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
SAS95W - 6 2026-07-12
SAS81L - 6 2026-06-29
SAS79E - 6 2026-07-12
SAS47D - 6 2026-06-29
SAS94Y - 5 2026-07-10
SAS91Y - 5 2026-04-23
SAS583 Scandinavian Airlines System 5 2026-07-26
SAS51D - 5 2026-07-14
SAS31T Scandinavian Airlines System 5 2026-05-28
SAS31B - 5 2026-07-14
SAS2814 Scandinavian Airlines System 5 2026-07-24
SAS2813 Scandinavian Airlines System 5 2026-07-24
SAS2778 Scandinavian Airlines System 5 2026-05-27
SAS2777 Scandinavian Airlines System 5 2026-05-27
SAS161 - 5 2026-07-19
SAS1425 Scandinavian Airlines System 5 2026-06-05
SAS987P Scandinavian Airlines System 4 2026-05-17
SAS91A - 4 2026-06-21
SAS89T Scandinavian Airlines System 4 2026-06-01
SAS88K - 4 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS584 AGP → CPH Jul 26, 18:30 UTCJul 26, 22:00 UTC3h 30m
2026-07-26 SAS583 CPH → AGP Jul 26, 13:45 UTCJul 26, 16:55 UTC3h 10m
2026-07-26 SAS2774 OPO → CPH Jul 26, 09:20 UTCJul 26, 12:20 UTC3h 0m
2026-07-26 SAS2773 CPH → OPO Jul 26, 05:10 UTCJul 26, 08:00 UTC2h 51m
2026-07-25 SAS66Z FAO → CPH Jul 25, 17:50 UTCJul 25, 21:25 UTC3h 35m
2026-07-25 SAS23N - Jul 25, 13:15 UTCJul 25, 16:30 UTC3h 15m
2026-07-25 SAS41C LHR → CPH Jul 25, 09:40 UTCJul 25, 11:10 UTC1h 30m
2026-07-25 SAS84F CPH → LHR Jul 25, 06:15 UTCJul 25, 08:05 UTC1h 50m
2026-07-24 SAS2814 ALC → CPH Jul 24, 18:25 UTCJul 24, 21:25 UTC3h 0m
2026-07-24 SAS2813 CPH → ALC Jul 24, 14:05 UTCJul 24, 17:10 UTC3h 5m
2026-07-24 SAS55H ATH → CPH Jul 24, 09:55 UTCJul 24, 12:55 UTC3h 0m
2026-07-24 SAS68R CPH → ATH Jul 24, 05:25 UTCJul 24, 08:05 UTC2h 40m
2026-07-23 SAS588 AGP → CPH Jul 23, 18:25 UTCJul 23, 21:35 UTC3h 10m
2026-07-23 SAS63Y CPH → AGP Jul 23, 13:45 UTCJul 23, 16:50 UTC3h 5m
2026-07-23 SAS2286 - Jul 23, 08:40 UTCJul 23, 11:40 UTC3h 0m
2026-07-23 SAS2285 CPH → ZTH Jul 23, 04:10 UTCJul 23, 06:50 UTC2h 40m
2026-07-22 SAS588 AGP → CPH Jul 22, 18:30 UTCJul 22, 21:45 UTC3h 15m
2026-07-22 SAS63Y CPH → AGP Jul 22, 13:40 UTCJul 22, 17:00 UTC3h 20m
2026-07-22 SAS583 CPH → AGP Jul 22, 04:10 UTCJul 22, 12:10 UTC8h 0m
2026-07-21 SAS78C LHR → CPH Jul 21, 17:55 UTCJul 21, 19:25 UTC1h 30m
2026-07-21 SAS72G CPH → LHR Jul 21, 15:05 UTCJul 21, 16:40 UTC1h 35m
2026-07-21 SAS55H ATH → CPH Jul 21, 11:05 UTCJul 21, 14:05 UTC3h 0m
2026-07-21 SAS68R CPH → ATH Jul 21, 06:55 UTCJul 21, 09:45 UTC2h 50m
2026-07-20 SAS688 MXP → CPH Jul 20, 18:25 UTCJul 20, 20:05 UTC1h 40m
2026-07-20 SAS687 CPH → MXP Jul 20, 15:20 UTCJul 20, 17:00 UTC1h 40m
2026-07-20 SAS431 - Jul 20, 13:45 UTCJul 20, 14:20 UTC35m
2026-07-20 SAS430 - Jul 20, 12:25 UTCJul 20, 12:55 UTC30m
2026-07-20 SAS41C - Jul 20, 09:35 UTCJul 20, 11:05 UTC1h 30m
2026-07-20 SAS84F CPH → LHR Jul 20, 06:20 UTCJul 20, 08:00 UTC1h 40m
2026-07-20 SAS87T - Jul 20, 04:20 UTCJul 20, 04:50 UTC30m
2026-07-19 SAS36E - Jul 19, 20:15 UTCJul 19, 23:30 UTC3h 15m
2026-07-19 SAS45M - Jul 19, 15:25 UTCJul 19, 18:55 UTC3h 30m
2026-07-19 SAS161 - Jul 19, 11:55 UTCJul 19, 12:45 UTC50m
2026-07-19 SAS2616 GVA → ARN Jul 19, 08:35 UTCJul 19, 10:45 UTC2h 10m
2026-07-19 SAS93E ARN → GVA Jul 19, 05:05 UTCJul 19, 07:25 UTC2h 20m
2026-07-18 SAS86L - Jul 18, 19:10 UTCJul 18, 21:10 UTC2h 0m
2026-07-18 SAS579 ARN → CDG Jul 18, 15:40 UTCJul 18, 17:55 UTC2h 15m
2026-07-18 SAS7848 - Jul 18, 10:50 UTCJul 18, 14:15 UTC3h 25m
2026-07-18 SAS7847 ARN → JTR Jul 18, 05:55 UTCJul 18, 09:25 UTC3h 30m
2026-07-17 SAS1600 - Jul 17, 19:05 UTCJul 17, 20:44 UTC1h 40m
2026-07-17 SAS64A ARN → BRU Jul 17, 16:00 UTCJul 17, 17:55 UTC1h 55m
2026-07-17 SAS55C OSL → ARN Jul 17, 13:55 UTCJul 17, 14:35 UTC40m
2026-07-17 SAS867 ARN → OSL Jul 17, 12:15 UTCJul 17, 12:55 UTC40m
2026-07-17 SAS42E CPH → ARN Jul 17, 10:05 UTCJul 17, 10:55 UTC50m
2026-07-17 SAS41K ARN → CPH Jul 17, 08:04 UTCJul 17, 09:04 UTC1h 0m
2026-07-17 SAS46M CPH → ARN Jul 17, 06:20 UTCJul 17, 07:14 UTC55m
2026-07-16 SAS30T - Jul 16, 18:44 UTCJul 16, 21:25 UTC2h 40m
2026-07-16 SAS96C - Jul 16, 14:15 UTCJul 16, 17:00 UTC2h 45m
2026-07-16 SAS2814 - Jul 16, 08:25 UTCJul 16, 11:15 UTC2h 50m
2026-07-16 SAS2813 - Jul 16, 04:15 UTCJul 16, 07:20 UTC3h 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-SIM page for operator, model, and routing details .

Mode-S 4CAD40 frequently asked

What is Mode-S code 4CAD40?
4CAD40 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-SIM.
Where is Mode-S 4CAD40 registered?
Mode-S code 4CAD40 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD40 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD40, octal 23126500, decimal 5,025,088.
What flights does 4CAD40 operate?
Mode-S 4CAD40 has broadcast 20 distinct callsigns, including SAS95W, SAS81L, SAS79E, SAS47D, SAS94Y.