Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 1h ago
Flights observed
261
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

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
SAS91Y - 5 2026-04-23
SAS81L Scandinavian Airlines System 5 2026-05-29
SAS47D Scandinavian Airlines System 5 2026-05-29
SAS31T Scandinavian Airlines System 5 2026-05-28
SAS2778 Scandinavian Airlines System 5 2026-05-27
SAS2777 Scandinavian Airlines System 5 2026-05-27
SAS987P Scandinavian Airlines System 4 2026-05-17
SAS95W Scandinavian Airlines System 4 2026-05-23
SAS84B Scandinavian Airlines System 4 2026-05-16
SAS79E Scandinavian Airlines System 4 2026-05-23
SAS77G Scandinavian Airlines System 4 2026-04-23
SAS2026 Scandinavian Airlines System 4 2026-05-16
SAS1425 Scandinavian Airlines System 4 2026-05-17
SAS10E Scandinavian Airlines System 4 2026-05-28
SAS89T Scandinavian Airlines System 3 2026-04-21
SAS793 Scandinavian Airlines System 3 2026-05-30
SAS74E Scandinavian Airlines System 3 2026-04-19
SAS601 Scandinavian Airlines System 3 2026-04-21
SAS596 Scandinavian Airlines System 3 2026-05-26
SAS595 Scandinavian Airlines System 3 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SAS793 CPH → NCE May 30, 06:50 UTCMay 30, 08:00 UTC1h 10m
2026-05-30 SAS1705 HEL → CPH May 30, 03:20 UTCMay 30, 04:40 UTC1h 20m
2026-05-29 SAS45T CPH → HEL May 29, 21:10 UTCMay 29, 22:25 UTC1h 15m
2026-05-29 SAS1910 BIO → CPH May 29, 17:50 UTCMay 29, 20:05 UTC2h 15m
2026-05-29 SAS1909 CPH → BIO May 29, 14:00 UTCMay 29, 16:15 UTC2h 15m
2026-05-29 SAS47D NAP → CPH May 29, 10:15 UTCMay 29, 12:35 UTC2h 20m
2026-05-29 SAS81L CPH → CDG May 29, 06:40 UTCMay 29, 08:40 UTC2h 0m
2026-05-28 SAS782 SKG → CPH May 28, 17:00 UTCMay 28, 19:45 UTC2h 45m
2026-05-28 SAS781 CPH → SKG May 28, 13:30 UTCMay 28, 15:45 UTC2h 15m
2026-05-28 SAS10E VCE → CPH May 28, 09:35 UTCMay 28, 11:20 UTC1h 45m
2026-05-28 SAS31T CPH → VCE May 28, 06:35 UTCMay 28, 08:15 UTC1h 40m
2026-05-27 SAS2778 CPH → ATH May 27, 16:50 UTCMay 27, 19:55 UTC3h 5m
2026-05-27 SAS2777 ATH → CPH May 27, 12:35 UTCMay 27, 15:20 UTC2h 45m
2026-05-27 SAS23A MXP → CPH May 27, 09:50 UTCMay 27, 11:35 UTC1h 45m
2026-05-27 SAS71K CPH → MXP May 27, 06:49 UTCMay 27, 08:45 UTC1h 56m
2026-05-26 SAS584 AGP → CPH May 26, 19:20 UTCMay 26, 22:25 UTC3h 5m
2026-05-26 SAS583 CPH → AGP May 26, 14:45 UTCMay 26, 17:59 UTC3h 15m
2026-05-26 SAS596 KEF → CPH May 26, 11:30 UTCMay 26, 13:50 UTC2h 20m
2026-05-26 SAS595 CPH → KEF May 26, 07:24 UTCMay 26, 10:34 UTC3h 10m
2026-05-25 SAS2768 MLA → CPH May 25, 16:20 UTCMay 25, 19:25 UTC3h 5m
2026-05-25 SAS44A LPA → CPH May 25, 12:25 UTCMay 25, 15:10 UTC2h 45m
2026-05-25 SAS10E VCE → CPH May 25, 09:10 UTCMay 25, 10:55 UTC1h 45m
2026-05-25 SAS31T CPH → VCE May 25, 06:10 UTCMay 25, 07:50 UTC1h 40m
2026-05-24 SAS2778 CPH → ATH May 24, 16:50 UTCMay 24, 19:55 UTC3h 5m
2026-05-24 SAS2777 ATH → CPH May 24, 12:40 UTCMay 24, 15:25 UTC2h 45m
2026-05-24 SAS23A MXP → CPH May 24, 09:35 UTCMay 24, 11:30 UTC1h 55m
2026-05-24 SAS71K CPH → MXP May 24, 06:35 UTCMay 24, 08:20 UTC1h 45m
2026-05-24 SAS1415 ARN → CPH May 24, 04:20 UTCMay 24, 05:10 UTC50m
2026-05-23 SAS79E BER → ARN May 23, 19:05 UTCMay 23, 20:25 UTC1h 20m
2026-05-23 SAS95W ARN → BER May 23, 17:00 UTCMay 23, 18:15 UTC1h 16m
2026-05-23 SAS2678 BER → ARN May 23, 14:55 UTCMay 23, 16:10 UTC1h 15m
2026-05-23 SAS2677 ARN → BER May 23, 12:30 UTCMay 23, 13:45 UTC1h 15m
2026-05-23 SAS88K CDG → ARN May 23, 09:20 UTCMay 23, 11:20 UTC2h 0m
2026-05-23 SAS85Y OSL → BCN May 23, 05:35 UTCMay 23, 07:55 UTC2h 20m
2026-05-22 SAS071 OSD → ARN May 22, 18:10 UTCMay 22, 18:50 UTC40m
2026-05-22 SAS070 ARN → OSD May 22, 16:45 UTCMay 22, 17:35 UTC50m
2026-05-22 SAS41A GOT → ARN May 22, 14:55 UTCMay 22, 15:40 UTC45m
2026-05-22 SAS161 ARN → GOT May 22, 12:45 UTCMay 22, 13:30 UTC45m
2026-05-22 SAS7924 JSH → ARN May 22, 08:35 UTCMay 22, 11:35 UTC3h 0m
2026-05-22 SAS7955 GOT → IOA May 22, 04:20 UTCMay 22, 06:45 UTC2h 25m
2026-05-21 SAS35T ARN → GOT May 21, 18:10 UTCMay 21, 18:50 UTC40m
2026-05-21 SAS164 GOT → ARN May 21, 16:30 UTCMay 21, 17:15 UTC45m
2026-05-21 SAS68G ARN → GOT May 21, 15:10 UTCMay 21, 15:45 UTC35m
2026-05-21 SAS1582 MAD → ARN May 21, 10:30 UTCMay 21, 13:50 UTC3h 20m
2026-05-21 SAS1581 ARN → MAD May 21, 05:25 UTCMay 21, 09:05 UTC3h 40m
2026-05-20 SAS071 OSD → ARN May 20, 17:55 UTCMay 20, 18:40 UTC45m
2026-05-20 SAS070 ARN → OSD May 20, 16:25 UTCMay 20, 17:15 UTC50m
2026-05-20 SAS2112 MMX → ARN May 20, 14:05 UTCMay 20, 14:55 UTC50m
2026-05-20 SAS2111 ARN → MMX May 20, 12:20 UTCMay 20, 13:10 UTC50m
2026-05-20 SAS144 GOT → ARN May 20, 08:40 UTCMay 20, 09:25 UTC45m

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 1h ago.
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 SAS91Y, SAS81L, SAS47D, SAS31T, SAS2778.