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sensors Mode-S transponder

4CAC8A

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAC8A
Octal
23126212
Decimal
5,024,906
Country
IE
Tail
EI-SIT
Type
A20N
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
558
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 4CAC8A.

Country allocation

The ICAO 24-bit address 4CAC8A 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
SAS38M - 7 2026-07-23
SAS94B Scandinavian Airlines System 6 2026-07-23
SAS51D - 6 2026-06-19
SAS45M - 6 2026-07-26
SAS31B - 6 2026-06-19
SAS86L - 5 2026-06-24
SAS80D - 5 2026-07-07
SAS67W - 5 2026-07-07
SAS579 Scandinavian Airlines System 5 2026-06-24
SAS534 - 5 2026-07-21
SAS533 Scandinavian Airlines System 5 2026-07-21
SAS528 Scandinavian Airlines System 5 2026-06-10
SAS527 Scandinavian Airlines System 5 2026-06-10
SAS45A Scandinavian Airlines System 5 2026-06-08
SAS2112 Scandinavian Airlines System 5 2026-06-08
SAS2111 Scandinavian Airlines System 5 2026-06-08
SAS1557 - 5 2026-07-15
SAS87T - 4 2026-06-27
SAS72C - 4 2026-07-13
SAS688 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS36E AGP → GOT Jul 26, 20:15 UTCJul 26, 22:30 UTC2h 15m
2026-07-26 SAS45M - Jul 26, 15:25 UTCJul 26, 18:40 UTC3h 15m
2026-07-26 SAS161 ARN → GOT Jul 26, 12:00 UTCJul 26, 12:45 UTC45m
2026-07-26 SAS2616 GVA → ARN Jul 26, 08:35 UTCJul 26, 10:50 UTC2h 15m
2026-07-26 SAS93E ARN → GVA Jul 26, 05:20 UTCJul 26, 07:30 UTC2h 11m
2026-07-25 SAS55A ALC → ARN Jul 25, 19:25 UTCJul 25, 22:50 UTC3h 25m
2026-07-25 SAS35K ARN → ALC Jul 25, 14:15 UTCJul 25, 17:55 UTC3h 40m
2026-07-25 SAS65P - Jul 25, 09:40 UTCJul 25, 13:10 UTC3h 30m
2026-07-25 SAS7807 GOT → SMI Jul 25, 05:30 UTCJul 25, 08:15 UTC2h 45m
2026-07-24 SAS7956 IOA → GOT Jul 24, 19:10 UTCJul 24, 22:05 UTC2h 55m
2026-07-24 SAS7923 ARN → JSH Jul 24, 14:45 UTCJul 24, 17:05 UTC2h 20m
2026-07-24 SAS7646 - Jul 24, 09:20 UTCJul 24, 13:00 UTC3h 40m
2026-07-24 SAS7645 ARN → CHQ Jul 24, 04:40 UTCJul 24, 07:50 UTC3h 10m
2026-07-23 SAS2792 AYT → ARN Jul 23, 18:35 UTCJul 23, 22:20 UTC3h 45m
2026-07-23 SAS2791 ARN → AYT Jul 23, 13:20 UTCJul 23, 16:55 UTC3h 35m
2026-07-23 SAS38M - Jul 23, 09:40 UTCJul 23, 12:00 UTC2h 20m
2026-07-23 SAS94B ARN → LHR Jul 23, 05:20 UTCJul 23, 07:35 UTC2h 15m
2026-07-22 SAS2856 - Jul 22, 19:10 UTCJul 22, 22:05 UTC2h 55m
2026-07-22 SAS2855 ARN → BIQ Jul 22, 15:20 UTCJul 22, 18:15 UTC2h 55m
2026-07-22 SAS2982 ARN → ARN Jul 22, 04:00 UTCJul 22, 13:35 UTC9h 35m
2026-07-22 TEST ARN → ARN Jul 22, 00:40 UTCJul 22, 01:20 UTC40m
2026-07-21 SAS534 - Jul 21, 20:45 UTCJul 21, 22:50 UTC2h 5m
2026-07-21 SAS533 ARN → LHR Jul 21, 17:25 UTCJul 21, 19:25 UTC2h 0m
2026-07-21 SAS532 LHR → ARN Jul 21, 13:20 UTCJul 21, 15:25 UTC2h 5m
2026-07-21 SAS531 ARN → LHR Jul 21, 09:25 UTCJul 21, 11:30 UTC2h 5m
2026-07-21 SAS51N - Jul 21, 05:55 UTCJul 21, 08:00 UTC2h 5m
2026-07-20 SAS1501 CPH → LHR Jul 20, 18:50 UTCJul 20, 20:25 UTC1h 35m
2026-07-20 SAS506 - Jul 20, 16:20 UTCJul 20, 17:55 UTC1h 35m
2026-07-20 SAS505 CPH → LHR Jul 20, 13:10 UTCJul 20, 14:45 UTC1h 35m
2026-07-20 SAS70P DUB → CPH Jul 20, 10:15 UTCJul 20, 12:05 UTC1h 50m
2026-07-20 SAS32F CPH → DUB Jul 20, 07:10 UTCJul 20, 09:05 UTC1h 55m
2026-07-19 SAS2992 RHO → CPH Jul 19, 18:45 UTCJul 19, 22:00 UTC3h 15m
2026-07-19 SAS2991 CPH → RHO Jul 19, 13:55 UTCJul 19, 17:05 UTC3h 10m
2026-07-19 SAS55H ATH → CPH Jul 19, 09:45 UTCJul 19, 12:30 UTC2h 45m
2026-07-19 SAS68R CPH → ATH Jul 19, 05:25 UTCJul 19, 08:25 UTC3h 0m
2026-07-18 SAS2808 - Jul 18, 10:00 UTCJul 18, 13:05 UTC3h 5m
2026-07-18 SAS2807 CPH → AGP Jul 18, 05:20 UTCJul 18, 08:40 UTC3h 20m
2026-07-17 SAS50L - Jul 17, 19:00 UTCJul 17, 21:30 UTC2h 30m
2026-07-17 SAS40A - Jul 17, 14:55 UTCJul 17, 17:40 UTC2h 45m
2026-07-17 SAS2802 LIS → CPH Jul 17, 11:00 UTCJul 17, 13:55 UTC2h 55m
2026-07-17 SAS2801 CPH → LIS Jul 17, 05:55 UTCJul 17, 09:25 UTC3h 30m
2026-07-16 SAS2778 ATH → CPH Jul 16, 18:59 UTCJul 16, 21:55 UTC2h 55m
2026-07-16 SAS2777 CPH → ATH Jul 16, 15:00 UTCJul 16, 17:45 UTC2h 45m
2026-07-16 SAS53C ARN → CPH Jul 16, 12:34 UTCJul 16, 13:25 UTC50m
2026-07-15 SAS1558 - Jul 15, 19:50 UTCJul 15, 21:30 UTC1h 40m
2026-07-15 SAS1557 ARN → AMS Jul 15, 16:45 UTCJul 15, 18:15 UTC1h 30m
2026-07-15 SAS1818 - Jul 15, 11:40 UTCJul 15, 15:25 UTC3h 45m
2026-07-15 SAS1817 - Jul 15, 05:35 UTCJul 15, 09:45 UTC4h 10m
2026-07-14 SAS92L SKG → ARN Jul 14, 19:35 UTCJul 14, 22:40 UTC3h 5m
2026-07-14 SAS63D ARN → SKG Jul 14, 15:25 UTCJul 14, 18:15 UTC2h 50m

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

Mode-S 4CAC8A frequently asked

What is Mode-S code 4CAC8A?
4CAC8A is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-SIT.
Where is Mode-S 4CAC8A registered?
Mode-S code 4CAC8A is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC8A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC8A, octal 23126212, decimal 5,024,906.
What flights does 4CAC8A operate?
Mode-S 4CAC8A has broadcast 20 distinct callsigns, including SAS38M, SAS94B, SAS51D, SAS45M, SAS31B.