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sensors Mode-S transponder

4ACAA1

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RUA · AIRBUS A-320neo

Hex
4ACAA1
Octal
22545241
Decimal
4,901,537
Country
SE
Tail
SE-RUA
Type
A20N
Broadcasting now · callsign SAS7329 · 38,975 ft
Flights observed
489
Distinct callsigns
20
Country
SE
Last broadcast
10m ago

Current position

4ACAA1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACAA1 falls within the block assigned to Sweden (SE) by ICAO Annex 10, Volume III. Every aircraft registered in Sweden 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
SAS4473 Scandinavian Airlines System 8 2026-06-14
SAS73A - 6 2026-06-25
SAS4637 Scandinavian Airlines System 6 2026-05-17
SAS52L - 5 2026-06-25
SAS50G - 5 2026-06-25
SAS43C - 5 2026-06-25
SAS4105 - 5 2026-07-14
SAS87F Scandinavian Airlines System 4 2026-06-08
SAS810 Scandinavian Airlines System 4 2026-06-09
SAS809 Scandinavian Airlines System 4 2026-06-09
SAS77K - 4 2026-07-01
SAS69C Scandinavian Airlines System 4 2026-06-27
SAS60K Scandinavian Airlines System 4 2026-05-29
SAS4704 - 4 2026-06-18
SAS4703 - 4 2026-06-18
SAS462 Scandinavian Airlines System 4 2026-06-06
SAS4546 Scandinavian Airlines System 4 2026-06-27
SAS4545 - 4 2026-06-27
SAS4124 - 4 2026-06-17
SAS4083 - 4 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SAS7329 - Jul 14, 13:15 UTCJul 14, 14:15 UTC1h 0m
2026-07-14 SAS4031 OSL → SVG Jul 14, 11:35 UTCJul 14, 12:10 UTC35m
2026-07-14 SAS4105 - Jul 14, 04:50 UTCJul 14, 06:00 UTC1h 10m
2026-07-13 SAS4126 OSL → BOO Jul 13, 20:05 UTCJul 13, 21:20 UTC1h 15m
2026-07-13 SAS885 ARN → OSL Jul 13, 16:00 UTCJul 13, 16:40 UTC40m
2026-07-13 SAS46C - Jul 13, 14:00 UTCJul 13, 15:00 UTC1h 0m
2026-07-13 SAS010 - Jul 13, 12:05 UTCJul 13, 13:10 UTC1h 5m
2026-07-13 SAS88K - Jul 13, 08:45 UTCJul 13, 10:50 UTC2h 5m
2026-07-13 SAS85Y ARN → CDG Jul 13, 05:01 UTCJul 13, 07:15 UTC2h 15m
2026-07-12 SAS2904 LIS → ARN Jul 12, 17:35 UTCJul 12, 21:15 UTC3h 40m
2026-07-12 SAS2903 ARN → LIS Jul 12, 12:05 UTCJul 12, 16:10 UTC4h 5m
2026-07-12 SAS82K - Jul 12, 06:15 UTCJul 12, 07:25 UTC1h 10m
2026-07-11 SAS2002 - Jul 11, 16:50 UTCJul 11, 17:40 UTC50m
2026-07-11 SAS80D NCE → ARN Jul 11, 12:00 UTCJul 11, 14:40 UTC2h 40m
2026-07-11 SAS67W ARN → NCE Jul 11, 07:30 UTCJul 11, 10:05 UTC2h 35m
2026-07-11 SAS82K - Jul 11, 05:05 UTCJul 11, 06:15 UTC1h 10m
2026-07-10 SAS22Y - Jul 10, 20:20 UTCJul 10, 21:10 UTC50m
2026-07-10 SAS1556 - Jul 10, 17:35 UTCJul 10, 19:10 UTC1h 35m
2026-07-10 SAS1555 ARN → AMS Jul 10, 14:35 UTCJul 10, 16:10 UTC1h 35m
2026-07-10 SAS1950 - Jul 10, 10:35 UTCJul 10, 13:20 UTC2h 45m
2026-07-10 SAS1949 - Jul 10, 06:25 UTCJul 10, 08:35 UTC2h 10m
2026-07-09 SAS1408 CPH → ARN Jul 9, 15:20 UTCJul 9, 16:15 UTC55m
2026-07-09 SAS2875 BGO → CPH Jul 9, 12:55 UTCJul 9, 13:55 UTC1h 0m
2026-07-09 SAS2864 - Jul 9, 11:05 UTCJul 9, 12:10 UTC1h 5m
2026-07-09 SAS62L - Jul 9, 08:50 UTCJul 9, 09:55 UTC1h 5m
2026-07-09 SAS2551 CPH → AMS Jul 9, 06:25 UTCJul 9, 07:25 UTC1h 0m
2026-07-09 SAS2861 BGO → CPH Jul 9, 04:00 UTCJul 9, 04:55 UTC55m
2026-07-08 SAS2874 CPH → BGO Jul 8, 21:25 UTCJul 8, 22:35 UTC1h 10m
2026-07-08 SAS53C ARN → CPH Jul 8, 11:40 UTCJul 8, 12:25 UTC45m
2026-07-08 SAS1882 - Jul 8, 08:25 UTCJul 8, 10:45 UTC2h 20m
2026-07-08 SAS1881 - Jul 8, 05:00 UTCJul 8, 07:10 UTC2h 10m
2026-07-07 SAS64E - Jul 7, 19:20 UTCJul 7, 21:35 UTC2h 15m
2026-07-07 SAS63H ARN → DUB Jul 7, 15:50 UTCJul 7, 18:15 UTC2h 25m
2026-07-07 SAS42E - Jul 7, 10:00 UTCJul 7, 10:50 UTC50m
2026-07-07 SAS41K ARN → CPH Jul 7, 08:05 UTCJul 7, 09:00 UTC55m
2026-07-07 SAS46M - Jul 7, 06:10 UTCJul 7, 06:55 UTC45m
2026-07-07 SAS1415 ARN → CPH Jul 7, 04:05 UTCJul 7, 05:05 UTC1h 0m
2026-07-06 SAS64R - Jul 6, 17:40 UTCJul 6, 20:10 UTC2h 30m
2026-07-06 SAS61P - Jul 6, 14:00 UTCJul 6, 16:05 UTC2h 5m
2026-07-06 SAS92L SKG → ARN Jul 6, 08:50 UTCJul 6, 11:55 UTC3h 5m
2026-07-06 SAS63D ARN → SKG Jul 6, 05:55 UTCJul 6, 07:30 UTC1h 35m
2026-07-06 SAS63D ARN → SKG Jul 6, 04:45 UTCJul 6, 05:50 UTC1h 5m
2026-07-05 SAS80D NCE → ARN Jul 5, 18:55 UTCJul 5, 21:35 UTC2h 40m
2026-07-05 SAS67W ARN → NCE Jul 5, 15:05 UTCJul 5, 17:40 UTC2h 35m
2026-07-05 SAS2648 - Jul 5, 12:40 UTCJul 5, 14:00 UTC1h 20m
2026-07-05 SAS2647 ARN → HAM Jul 5, 10:25 UTCJul 5, 11:40 UTC1h 15m
2026-07-05 SAS6050 - Jul 5, 07:45 UTCJul 5, 08:25 UTC40m
2026-07-05 SAS9251 - Jul 5, 06:20 UTCJul 5, 07:00 UTC40m
2026-07-04 SAS7930 - Jul 4, 10:30 UTCJul 4, 13:40 UTC3h 10m
2026-07-04 SAS43E - Jul 4, 05:35 UTCJul 4, 08:20 UTC2h 45m

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 SE-RUA page for operator, model, and routing details .

Mode-S 4ACAA1 frequently asked

What is Mode-S code 4ACAA1?
4ACAA1 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RUA.
Where is Mode-S 4ACAA1 registered?
Mode-S code 4ACAA1 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAA1 broadcasting right now?
Yes. Mode-S 4ACAA1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACAA1, octal 22545241, decimal 4,901,537.
What flights does 4ACAA1 operate?
Mode-S 4ACAA1 has broadcast 20 distinct callsigns, including SAS4473, SAS73A, SAS4637, SAS52L, SAS50G.