Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CADD9

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CADD9
Octal
23126731
Decimal
5,025,241
Country
IE
Tail
EI-SIV
Type
A20N
No current signal · last broadcast 12h ago
Flights observed
276
Distinct callsigns
20
Country
IE
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4CADD9.

Country allocation

The ICAO 24-bit address 4CADD9 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
SAS583 Scandinavian Airlines System 5 2026-04-17
SAS793 Scandinavian Airlines System 4 2026-04-23
SAS584 Scandinavian Airlines System 4 2026-04-17
SAS528 Scandinavian Airlines System 4 2026-05-27
SAS527 Scandinavian Airlines System 4 2026-05-27
SAS74E Scandinavian Airlines System 3 2026-04-23
SAS59D Scandinavian Airlines System 3 2026-05-21
SAS595 - 3 2026-04-14
SAS49K - 3 2026-04-20
SAS455 Scandinavian Airlines System 3 2026-04-23
SAS454 Scandinavian Airlines System 3 2026-04-23
SAS2814 Scandinavian Airlines System 3 2026-04-15
SAS2813 Scandinavian Airlines System 3 2026-04-15
SAS22A Scandinavian Airlines System 3 2026-05-21
SAS187 Scandinavian Airlines System 3 2026-05-20
SAS035 Scandinavian Airlines System 3 2026-05-22
SAS034 Scandinavian Airlines System 3 2026-05-22
SAS94Y Scandinavian Airlines System 2 2026-05-26
SAS94B Scandinavian Airlines System 2 2026-05-22
SAS89B Scandinavian Airlines System 2 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAS2142 GOT → ARN May 29, 19:50 UTCMay 29, 20:30 UTC40m
2026-05-29 SAS2141 ARN → GOT May 29, 18:20 UTCMay 29, 19:05 UTC45m
2026-05-29 SAS2114 MMX → ARN May 29, 16:25 UTCMay 29, 17:20 UTC55m
2026-05-29 SAS2113 ARN → MMX May 29, 14:30 UTCMay 29, 15:30 UTC1h 0m
2026-05-29 SAS68L KRN → ARN May 29, 12:10 UTCMay 29, 13:25 UTC1h 15m
2026-05-29 SAS50F ARN → KRN May 29, 09:50 UTCMay 29, 11:15 UTC1h 25m
2026-05-29 SAS106 MMX → ARN May 29, 07:55 UTCMay 29, 08:50 UTC55m
2026-05-29 SAS105 ARN → MMX May 29, 06:15 UTCMay 29, 07:05 UTC50m
2026-05-29 SAS130 MMX → ARN May 29, 04:00 UTCMay 29, 04:55 UTC55m
2026-05-28 SAS125 ARN → MMX May 28, 20:00 UTCMay 28, 20:40 UTC40m
2026-05-28 SAS071 OSD → ARN May 28, 17:55 UTCMay 28, 18:40 UTC45m
2026-05-28 SAS070 ARN → OSD May 28, 16:35 UTCMay 28, 17:20 UTC45m
2026-05-28 SAS2112 MMX → ARN May 28, 14:05 UTCMay 28, 15:05 UTC1h 0m
2026-05-28 SAS2111 ARN → MMX May 28, 12:25 UTCMay 28, 13:15 UTC50m
2026-05-28 SAS42E CPH → ARN May 28, 10:10 UTCMay 28, 11:05 UTC55m
2026-05-28 SAS41K ARN → CPH May 28, 08:10 UTCMay 28, 09:00 UTC50m
2026-05-28 SAS46M CPH → ARN May 28, 06:15 UTCMay 28, 07:10 UTC55m
2026-05-28 SAS1415 ARN → CPH May 28, 04:00 UTCMay 28, 05:00 UTC1h 0m
2026-05-27 SAS528 LHR → ARN May 27, 17:15 UTCMay 27, 19:20 UTC2h 5m
2026-05-27 SAS527 ARN → LHR May 27, 13:35 UTCMay 27, 15:55 UTC2h 20m
2026-05-27 SAS2678 BER → ARN May 27, 09:35 UTCMay 27, 10:55 UTC1h 20m
2026-05-27 SAS2677 ARN → BER May 27, 07:15 UTCMay 27, 08:25 UTC1h 10m
2026-05-27 SAS075 OSD → ARN May 27, 04:09 UTCMay 27, 04:55 UTC45m
2026-05-26 SAS2062 ARN → OSD May 26, 20:20 UTCMay 26, 21:04 UTC45m
2026-05-26 SAS528 LHR → ARN May 26, 17:30 UTCMay 26, 19:25 UTC1h 55m
2026-05-26 SAS527 ARN → LHR May 26, 13:50 UTCMay 26, 16:10 UTC2h 20m
2026-05-26 SAS94Y ATH → ARN May 26, 09:09 UTCMay 26, 12:40 UTC3h 30m
2026-05-26 SAS38H ARN → ATH May 26, 04:30 UTCMay 26, 07:45 UTC3h 15m
2026-05-25 SAS1428 CPH → ARN May 25, 21:35 UTCMay 25, 22:25 UTC50m
2026-05-25 SAS40G ARN → CPH May 25, 19:10 UTCMay 25, 20:09 UTC1h 0m
2026-05-25 SAS410 CPH → ARN May 25, 16:20 UTCMay 25, 17:15 UTC55m
2026-05-25 SAS407 ARN → CPH May 25, 14:35 UTCMay 25, 15:30 UTC55m
2026-05-25 SAS1804 AGP → ARN May 25, 09:45 UTCMay 25, 13:35 UTC3h 50m
2026-05-25 SAS245E ARN → AGP May 25, 04:25 UTCMay 25, 08:25 UTC4h 0m
2026-05-24 SAS532 LHR → ARN May 24, 16:00 UTCMay 24, 18:00 UTC2h 0m
2026-05-24 SAS531 ARN → LHR May 24, 12:30 UTCMay 24, 14:40 UTC2h 10m
2026-05-23 SAS86L AGP → GOT May 23, 20:00 UTCMay 23, 22:10 UTC2h 10m
2026-05-23 SAS579 ARN → CDG May 23, 16:50 UTCMay 23, 19:00 UTC2h 10m
2026-05-23 SAS7828 CHQ → ARN May 23, 12:00 UTCMay 23, 15:50 UTC3h 50m
2026-05-23 SAS82E ARN → CHQ May 23, 06:40 UTCMay 23, 10:00 UTC3h 20m
2026-05-22 SAS126 MMX → ARN May 22, 18:10 UTCMay 22, 19:05 UTC55m
2026-05-22 SAS121 ARN → MMX May 22, 16:40 UTCMay 22, 17:25 UTC45m
2026-05-22 SAS035 UME → ARN May 22, 14:40 UTCMay 22, 15:20 UTC40m
2026-05-22 SAS034 ARN → UME May 22, 12:35 UTCMay 22, 13:15 UTC40m
2026-05-22 SAS38M LHR → ARN May 22, 09:25 UTCMay 22, 11:25 UTC2h 0m
2026-05-22 SAS94B ARN → LHR May 22, 05:30 UTCMay 22, 07:50 UTC2h 20m
2026-05-21 SAS168 GOT → ARN May 21, 20:50 UTCMay 21, 21:35 UTC45m
2026-05-21 SAS169 ARN → GOT May 21, 19:15 UTCMay 21, 19:55 UTC40m
2026-05-21 SAS63A GOT → GOT May 21, 17:40 UTCMay 21, 18:25 UTC45m
2026-05-21 SAS22A ARN → GOT May 21, 16:05 UTCMay 21, 16:45 UTC40m

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

Mode-S 4CADD9 frequently asked

What is Mode-S code 4CADD9?
4CADD9 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-SIV.
Where is Mode-S 4CADD9 registered?
Mode-S code 4CADD9 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CADD9 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CADD9, octal 23126731, decimal 5,025,241.
What flights does 4CADD9 operate?
Mode-S 4CADD9 has broadcast 20 distinct callsigns, including SAS583, SAS793, SAS584, SAS528, SAS527.