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sensors Mode-S transponder

4CADDA

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CADDA
Octal
23126732
Decimal
5,025,242
Country
IE
Tail
EI-SIY
Type
A20N
Broadcasting now · callsign SAS88P · 39,000 ft
Flights observed
514
Distinct callsigns
20
Country
IE
Last broadcast
2h ago

Current position

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

Country allocation

The ICAO 24-bit address 4CADDA 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
SAS36E - 10 2026-06-29
SAS2112 Scandinavian Airlines System 8 2026-06-05
SAS2111 Scandinavian Airlines System 8 2026-06-05
SAS245E Scandinavian Airlines System 7 2026-05-22
SAS87T - 6 2026-06-16
SAS63A Scandinavian Airlines System 6 2026-06-11
SAS61E Scandinavian Airlines System 6 2026-06-11
SAS45M - 6 2026-06-29
SAS448 - 6 2026-07-05
SAS41A Scandinavian Airlines System 6 2026-07-10
SAS32J Scandinavian Airlines System 6 2026-06-11
SAS22A Scandinavian Airlines System 6 2026-06-11
SAS169 Scandinavian Airlines System 6 2026-06-11
SAS88K Scandinavian Airlines System 5 2026-06-05
SAS85Y Scandinavian Airlines System 5 2026-06-05
SAS76H Scandinavian Airlines System 4 2026-06-11
SAS72C Scandinavian Airlines System 4 2026-05-19
SAS688 Scandinavian Airlines System 4 2026-06-15
SAS59D Scandinavian Airlines System 4 2026-05-27
SAS57Y - 4 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SAS85A - Jul 14, 17:00 UTCJul 14, 18:30 UTC1h 30m
2026-07-14 SAS1678 BER → CPH Jul 14, 14:35 UTCJul 14, 15:10 UTC35m
2026-07-14 SAS1677 CPH → BER Jul 14, 12:15 UTCJul 14, 12:55 UTC40m
2026-07-14 SAS33D - Jul 14, 08:25 UTCJul 14, 11:00 UTC2h 35m
2026-07-14 SAS69P - Jul 14, 04:35 UTCJul 14, 07:15 UTC2h 40m
2026-07-13 SAS1698 - Jul 13, 19:05 UTCJul 13, 21:50 UTC2h 45m
2026-07-13 SAS1697 - Jul 13, 15:10 UTCJul 13, 17:40 UTC2h 30m
2026-07-13 SAS431 - Jul 13, 13:30 UTCJul 13, 13:55 UTC25m
2026-07-13 SAS57Y - Jul 13, 10:00 UTCJul 13, 12:05 UTC2h 5m
2026-07-13 SAS41R - Jul 13, 06:20 UTCJul 13, 08:35 UTC2h 15m
2026-07-12 SAS173 - Jul 12, 21:05 UTCJul 12, 21:50 UTC45m
2026-07-12 SAS528 - Jul 12, 17:55 UTCJul 12, 19:50 UTC1h 55m
2026-07-12 SAS527 ARN → LHR Jul 12, 13:35 UTCJul 12, 15:50 UTC2h 15m
2026-07-12 SAS7902 - Jul 12, 09:00 UTCJul 12, 12:10 UTC3h 10m
2026-07-12 SAS7901 ARN → MJT Jul 12, 04:20 UTCJul 12, 07:35 UTC3h 15m
2026-07-11 SAS92L - Jul 11, 18:50 UTCJul 11, 21:45 UTC2h 55m
2026-07-11 SAS63D ARN → SKG Jul 11, 14:55 UTCJul 11, 17:40 UTC2h 45m
2026-07-11 SAS96T - Jul 11, 10:05 UTCJul 11, 13:50 UTC3h 45m
2026-07-11 SAS95T - Jul 11, 04:30 UTCJul 11, 08:20 UTC3h 50m
2026-07-10 SAS1572 ALC → ARN Jul 10, 17:40 UTCJul 10, 21:25 UTC3h 45m
2026-07-10 SAS1571 ARN → ALC Jul 10, 12:55 UTCJul 10, 16:30 UTC3h 35m
2026-07-10 SAS41A GOT → ARN Jul 10, 10:55 UTCJul 10, 11:45 UTC50m
2026-07-10 SAS1836 SPU → GOT Jul 10, 07:40 UTCJul 10, 09:55 UTC2h 15m
2026-07-10 SAS1835 GOT → SPU Jul 10, 04:20 UTCJul 10, 06:05 UTC1h 45m
2026-07-09 SAS171 ARN → GOT Jul 9, 20:05 UTCJul 9, 20:50 UTC45m
2026-07-09 SAS1556 - Jul 9, 17:25 UTCJul 9, 19:00 UTC1h 35m
2026-07-09 SAS1555 - Jul 9, 14:30 UTCJul 9, 16:15 UTC1h 45m
2026-07-09 SAS2958 RHO → ARN Jul 9, 09:25 UTCJul 9, 13:20 UTC3h 55m
2026-07-09 SAS2957 ARN → RHO Jul 9, 04:20 UTCJul 9, 07:40 UTC3h 20m
2026-07-08 SAS54N - Jul 8, 16:25 UTCJul 8, 18:50 UTC2h 25m
2026-07-08 SAS39M - Jul 8, 12:50 UTCJul 8, 14:55 UTC2h 5m
2026-07-08 SAS51D - Jul 8, 09:10 UTCJul 8, 11:30 UTC2h 20m
2026-07-08 SAS31B ARN → DUB Jul 8, 05:45 UTCJul 8, 08:00 UTC2h 15m
2026-07-07 SAS41A GOT → ARN Jul 7, 22:20 UTCJul 7, 23:00 UTC40m
2026-07-07 SAS7950 - Jul 7, 16:50 UTCJul 7, 20:20 UTC3h 30m
2026-07-07 SAS7949 - Jul 7, 11:20 UTCJul 7, 14:25 UTC3h 5m
2026-07-07 SAS1836 SPU → GOT Jul 7, 07:15 UTCJul 7, 09:25 UTC2h 10m
2026-07-07 SAS1835 GOT → SPU Jul 7, 04:05 UTCJul 7, 05:55 UTC1h 50m
2026-07-06 SAS7948 - Jul 6, 16:35 UTCJul 6, 19:25 UTC2h 50m
2026-07-06 SAS7947 - Jul 6, 12:25 UTCJul 6, 14:40 UTC2h 15m
2026-07-06 SAS7946 - Jul 6, 08:05 UTCJul 6, 10:55 UTC2h 50m
2026-07-06 SAS7945 - Jul 6, 03:55 UTCJul 6, 06:15 UTC2h 20m
2026-07-05 SAS448 - Jul 5, 21:20 UTCJul 5, 21:55 UTC35m
2026-07-05 SAS78C - Jul 5, 18:05 UTCJul 5, 19:30 UTC1h 25m
2026-07-05 SAS72G CPH → LHR Jul 5, 15:00 UTCJul 5, 16:30 UTC1h 30m
2026-07-05 SAS588 - Jul 5, 10:00 UTCJul 5, 13:25 UTC3h 25m
2026-07-05 SAS63Y - Jul 5, 05:30 UTCJul 5, 08:45 UTC3h 15m
2026-07-04 SAS2778 ATH → CPH Jul 4, 18:55 UTCJul 4, 22:05 UTC3h 10m
2026-07-04 SAS2777 - Jul 4, 14:45 UTCJul 4, 17:25 UTC2h 40m
2026-07-04 SAS596 KEF → CPH Jul 4, 10:55 UTCJul 4, 13:25 UTC2h 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-SIY page for operator, model, and routing details .

Mode-S 4CADDA frequently asked

What is Mode-S code 4CADDA?
4CADDA is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-SIY.
Where is Mode-S 4CADDA registered?
Mode-S code 4CADDA is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CADDA broadcasting right now?
Yes. Mode-S 4CADDA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CADDA, octal 23126732, decimal 5,025,242.
What flights does 4CADDA operate?
Mode-S 4CADDA has broadcast 20 distinct callsigns, including SAS36E, SAS2112, SAS2111, SAS245E, SAS87T.