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sensors Mode-S transponder

4CAD87

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAD87
Octal
23126607
Decimal
5,025,159
Country
IE
Tail
EI-SIS
Type
A20N
Broadcasting now · callsign SAS33D · 21,950 ft
Flights observed
525
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 13:50 UTC

Current position

4CAD87 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAD87 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
SAS2778 Scandinavian Airlines System 9 2026-05-29
SAS23A - 9 2026-07-23
SAS71K - 8 2026-07-23
SAS2777 Scandinavian Airlines System 8 2026-05-29
SAS91Y Scandinavian Airlines System 6 2026-06-02
SAS77G Scandinavian Airlines System 6 2026-06-02
SAS448 - 6 2026-07-24
SAS1507 Scandinavian Airlines System 6 2026-07-21
SAS92U Scandinavian Airlines System 5 2026-07-22
SAS688 Scandinavian Airlines System 5 2026-07-22
SAS687 Scandinavian Airlines System 5 2026-07-22
SAS52E Scandinavian Airlines System 5 2026-05-25
SAS49K Scandinavian Airlines System 5 2026-07-21
SAS44L Scandinavian Airlines System 5 2026-05-25
SAS31T Scandinavian Airlines System 5 2026-07-19
SAS1707 Scandinavian Airlines System 5 2026-06-02
SAS1706 Scandinavian Airlines System 5 2026-06-02
SAS10E - 5 2026-07-19
SAS96C Scandinavian Airlines System 4 2026-07-24
SAS796 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS55A ALC → ARN Jul 26, 10:05 UTCJul 26, 13:40 UTC3h 35m
2026-07-26 SAS35K ARN → ALC Jul 26, 04:45 UTCJul 26, 08:20 UTC3h 36m
2026-07-25 SAS94Y ATH → ARN Jul 25, 17:50 UTCJul 25, 21:15 UTC3h 25m
2026-07-25 SAS38H ARN → ATH Jul 25, 13:15 UTCJul 25, 16:30 UTC3h 15m
2026-07-25 SAS2678 BER → ARN Jul 25, 09:50 UTCJul 25, 11:10 UTC1h 20m
2026-07-25 SAS2677 ARN → BER Jul 25, 07:20 UTCJul 25, 08:35 UTC1h 15m
2026-07-25 SAS150 GOT → ARN Jul 25, 05:20 UTCJul 25, 06:00 UTC40m
2026-07-24 SAS448 - Jul 24, 21:35 UTCJul 24, 22:05 UTC30m
2026-07-24 SAS30T PMI → CPH Jul 24, 16:55 UTCJul 24, 19:35 UTC2h 40m
2026-07-24 SAS96C CPH → PMI Jul 24, 12:45 UTCJul 24, 15:20 UTC2h 35m
2026-07-24 SAS2774 OPO → CPH Jul 24, 08:50 UTCJul 24, 11:40 UTC2h 50m
2026-07-24 SAS2773 CPH → OPO Jul 24, 04:25 UTCJul 24, 07:35 UTC3h 10m
2026-07-23 SAS1698 CTA → CPH Jul 23, 18:10 UTCJul 23, 20:55 UTC2h 45m
2026-07-23 SAS1697 CPH → CTA Jul 23, 13:35 UTCJul 23, 15:55 UTC2h 20m
2026-07-23 SAS23A MXP → CPH Jul 23, 09:35 UTCJul 23, 11:25 UTC1h 50m
2026-07-23 SAS71K CPH → MXP Jul 23, 06:40 UTCJul 23, 08:15 UTC1h 35m
2026-07-22 SAS688 MXP → CPH Jul 22, 18:30 UTCJul 22, 20:15 UTC1h 45m
2026-07-22 SAS687 CPH → MXP Jul 22, 15:20 UTCJul 22, 17:00 UTC1h 40m
2026-07-22 SAS92U MAD → CPH Jul 22, 11:15 UTCJul 22, 13:55 UTC2h 40m
2026-07-21 SAS49K LHR → CPH Jul 21, 18:35 UTCJul 21, 20:15 UTC1h 40m
2026-07-21 SAS1507 CPH → LHR Jul 21, 16:00 UTCJul 21, 17:30 UTC1h 30m
2026-07-21 SAS1678 BER → CPH Jul 21, 13:55 UTCJul 21, 14:45 UTC50m
2026-07-21 SAS1677 CPH → BER Jul 21, 11:55 UTCJul 21, 12:40 UTC45m
2026-07-21 SAS33D PMI → CPH Jul 21, 08:20 UTCJul 21, 10:55 UTC2h 35m
2026-07-21 SAS69P CPH → CDG Jul 21, 04:25 UTCJul 21, 07:00 UTC2h 35m
2026-07-20 SAS1698 CTA → CPH Jul 20, 19:30 UTCJul 20, 22:10 UTC2h 40m
2026-07-20 SAS1697 CPH → CTA Jul 20, 15:45 UTCJul 20, 18:15 UTC2h 30m
2026-07-20 SAS1678 BER → CPH Jul 20, 13:55 UTCJul 20, 14:35 UTC40m
2026-07-20 SAS1677 CPH → BER Jul 20, 12:00 UTCJul 20, 12:45 UTC45m
2026-07-20 SAS2788 SPU → CPH Jul 20, 09:05 UTCJul 20, 10:50 UTC1h 45m
2026-07-20 SAS2787 - Jul 20, 05:50 UTCJul 20, 07:30 UTC1h 40m
2026-07-19 SAS33K - Jul 19, 19:05 UTCJul 19, 21:10 UTC2h 5m
2026-07-19 SAS49N - Jul 19, 15:35 UTCJul 19, 17:35 UTC2h 0m
2026-07-19 SAS431 - Jul 19, 13:50 UTCJul 19, 14:20 UTC30m
2026-07-19 SAS430 CPH → GOT Jul 19, 12:25 UTCJul 19, 12:55 UTC30m
2026-07-19 SAS10E - Jul 19, 09:30 UTCJul 19, 11:15 UTC1h 45m
2026-07-19 SAS31T CPH → VCE Jul 19, 06:20 UTCJul 19, 08:10 UTC1h 50m
2026-07-18 SAS66Z FAO → CPH Jul 18, 17:55 UTCJul 18, 21:05 UTC3h 10m
2026-07-18 SAS23N - Jul 18, 13:10 UTCJul 18, 16:50 UTC3h 40m
2026-07-18 SAS41C LHR → CPH Jul 18, 09:50 UTCJul 18, 11:10 UTC1h 20m
2026-07-18 SAS84F CPH → LHR Jul 18, 06:20 UTCJul 18, 08:05 UTC1h 45m
2026-07-17 SAS688 MXP → CPH Jul 17, 19:20 UTCJul 17, 21:00 UTC1h 40m
2026-07-17 SAS687 - Jul 17, 16:00 UTCJul 17, 18:00 UTC2h 0m
2026-07-17 SAS431 - Jul 17, 14:10 UTCJul 17, 14:44 UTC35m
2026-07-17 SAS430 - Jul 17, 12:45 UTCJul 17, 13:15 UTC30m
2026-07-17 SAS41C LHR → CPH Jul 17, 09:40 UTCJul 17, 11:10 UTC1h 30m
2026-07-17 SAS84F CPH → LHR Jul 17, 06:20 UTCJul 17, 08:15 UTC1h 55m
2026-07-17 SAS1415 ARN → CPH Jul 17, 04:04 UTCJul 17, 05:04 UTC1h 0m
2026-07-16 SAS1810 - Jul 16, 17:45 UTCJul 16, 21:00 UTC3h 15m
2026-07-16 SAS236L - Jul 16, 13:05 UTCJul 16, 16:35 UTC3h 30m

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

Mode-S 4CAD87 frequently asked

What is Mode-S code 4CAD87?
4CAD87 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-SIS.
Where is Mode-S 4CAD87 registered?
Mode-S code 4CAD87 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD87 broadcasting right now?
Yes. Mode-S 4CAD87 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD87, octal 23126607, decimal 5,025,159.
What flights does 4CAD87 operate?
Mode-S 4CAD87 has broadcast 20 distinct callsigns, including SAS2778, SAS23A, SAS71K, SAS2777, SAS91Y.