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sensors Mode-S transponder

4ACA65

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RSE · AIRBUS A-350-900

Hex
4ACA65
Octal
22545145
Decimal
4,901,477
Country
SE
Tail
SE-RSE
Type
A359
Broadcasting now · callsign SAS930 · 39,000 ft
Flights observed
106
Distinct callsigns
14
Country
SE
Last broadcast
51m ago

Current position

4ACA65 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACA65 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 14 distinct

Callsign Airline Flights Last seen
SAS925 Scandinavian Airlines System 16 2026-05-22
SAS987 Scandinavian Airlines System 14 2026-05-27
SAS926 Scandinavian Airlines System 14 2026-05-23
SAS988 Scandinavian Airlines System 13 2026-05-27
SAS936 Scandinavian Airlines System 11 2026-05-29
SAS935 Scandinavian Airlines System 11 2026-05-28
SAS983 Scandinavian Airlines System 10 2026-05-25
SAS984 Scandinavian Airlines System 9 2026-05-26
SAS938 Scandinavian Airlines System 2 2026-05-24
SAS937 Scandinavian Airlines System 2 2026-05-24
SAS930 Scandinavian Airlines System 1 2026-05-29
SAS929 Scandinavian Airlines System 1 2026-05-29
SAS916 Scandinavian Airlines System 1 2026-05-16
SAS915 Scandinavian Airlines System 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAS930 ATL → CPH May 29, 23:50 UTCMay 30, 01:15 UTC1h 25m
2026-05-29 SAS929 CPH → ATL May 29, 12:10 UTCMay 29, 20:55 UTC8h 45m
2026-05-29 SAS936 SFO → CPH May 29, 00:05 UTCMay 29, 10:00 UTC9h 55m
2026-05-28 SAS935 CPH → SFO May 28, 11:10 UTCMay 28, 22:00 UTC10h 50m
2026-05-27 SAS988 ICN → CPH May 27, 16:40 UTCMay 28, 04:20 UTC11h 40m
2026-05-27 SAS988 ICN → CPH May 27, 15:15 UTCMay 27, 15:35 UTC20m
2026-05-27 SAS987 CPH → ICN May 27, 08:35 UTCMay 27, 09:00 UTC25m
2026-05-26 SAS987 CPH → ICN May 26, 22:05 UTCMay 27, 07:50 UTC9h 46m
2026-05-26 SAS984 HND → CPH May 26, 02:39 UTCMay 26, 15:39 UTC13h 0m
2026-05-25 SAS983 CPH → NRT May 25, 11:05 UTCMay 26, 00:09 UTC13h 5m
2026-05-24 SAS938 ARN → AES May 24, 23:20 UTCMay 25, 07:55 UTC8h 35m
2026-05-24 SAS937 SEA → CPH May 24, 11:40 UTCMay 24, 20:55 UTC9h 15m
2026-05-23 SAS938 ARN → AES May 23, 23:15 UTCMay 24, 07:50 UTC8h 35m
2026-05-23 SAS937 SEA → CPH May 23, 11:30 UTCMay 23, 20:40 UTC9h 11m
2026-05-23 SAS926 IAD → CPH May 23, 00:35 UTCMay 23, 07:40 UTC7h 5m
2026-05-22 SAS925 CPH → IAD May 22, 13:10 UTCMay 22, 21:20 UTC8h 10m
2026-05-20 SAS988 ICN → CPH May 20, 14:50 UTCMay 21, 03:30 UTC12h 40m
2026-05-20 SAS987 CPH → ICN May 20, 09:10 UTCMay 20, 09:30 UTC20m
2026-05-19 SAS987 CPH → ICN May 19, 22:10 UTCMay 20, 08:15 UTC10h 6m
2026-05-19 SAS984 HND → CPH May 19, 03:05 UTCMay 19, 15:55 UTC12h 50m
2026-05-18 SAS983 CPH → NRT May 18, 11:00 UTCMay 18, 23:40 UTC12h 39m
2026-05-16 SAS916 JFK → CPH May 16, 23:25 UTCMay 17, 06:15 UTC6h 50m
2026-05-16 SAS915 CPH → JFK May 16, 13:01 UTCMay 16, 20:35 UTC7h 35m
2026-05-16 SAS936 SFO → CPH May 16, 00:25 UTCMay 16, 10:16 UTC9h 51m
2026-05-15 SAS935 CPH → SFO May 15, 11:10 UTCMay 15, 21:30 UTC10h 19m
2026-05-15 SAS926 IAD → CPH May 15, 00:45 UTCMay 15, 08:00 UTC7h 15m
2026-05-14 SAS925 CPH → IAD May 14, 12:45 UTCMay 14, 20:50 UTC8h 5m
2026-05-14 SAS926 IAD → CPH May 14, 01:40 UTCMay 14, 09:10 UTC7h 30m
2026-05-13 SAS925 CPH → IAD May 13, 12:45 UTCMay 13, 21:00 UTC8h 15m
2026-05-13 SAS936 SFO → CPH May 13, 00:20 UTCMay 13, 10:00 UTC9h 40m
2026-05-12 SAS935 CPH → SFO May 12, 11:10 UTCMay 12, 21:35 UTC10h 25m
2026-05-12 SAS926 IAD → CPH May 12, 06:10 UTCMay 12, 07:35 UTC1h 25m
2026-05-11 SAS925 CPH → IAD May 11, 12:40 UTCMay 11, 21:00 UTC8h 20m
2026-05-11 SAS936 SFO → CPH May 11, 00:49 UTCMay 11, 10:20 UTC9h 30m
2026-05-10 SAS935 CPH → SFO May 10, 11:20 UTCMay 10, 21:59 UTC10h 40m
2026-05-10 SAS926 IAD → CPH May 10, 00:20 UTCMay 10, 07:30 UTC7h 10m
2026-05-09 SAS925 CPH → IAD May 9, 12:50 UTCMay 9, 21:00 UTC8h 10m
2026-05-09 SAS936 SFO → CPH May 9, 00:20 UTCMay 9, 10:10 UTC9h 50m
2026-05-08 SAS935 CPH → SFO May 8, 11:05 UTCMay 8, 21:10 UTC10h 5m
2026-05-08 SAS926 IAD → CPH May 8, 01:00 UTCMay 8, 08:09 UTC7h 10m
2026-05-07 SAS925 CPH → IAD May 7, 12:50 UTCMay 7, 21:05 UTC8h 15m
2026-05-06 SAS984 HND → CPH May 6, 03:10 UTCMay 6, 16:00 UTC12h 50m
2026-05-05 SAS983 CPH → NRT May 5, 12:30 UTCMay 6, 01:01 UTC12h 30m
2026-05-05 SAS936 SFO → CPH May 5, 00:15 UTCMay 5, 10:15 UTC10h 0m
2026-05-04 SAS935 CPH → SFO May 4, 11:20 UTCMay 4, 21:35 UTC10h 16m
2026-05-04 SAS926 IAD → CPH May 4, 00:15 UTCMay 4, 07:25 UTC7h 10m
2026-05-03 SAS925 CPH → IAD May 3, 12:40 UTCMay 3, 20:45 UTC8h 5m
2026-05-02 SAS988 ICN → CPH May 2, 16:15 UTCMay 3, 03:35 UTC11h 19m
2026-05-02 SAS988 ICN → CPH May 2, 15:00 UTCMay 2, 15:10 UTC10m
2026-05-02 SAS987 CPH → ICN May 2, 08:55 UTCMay 2, 09:10 UTC15m

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

Mode-S 4ACA65 frequently asked

What is Mode-S code 4ACA65?
4ACA65 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSE.
Where is Mode-S 4ACA65 registered?
Mode-S code 4ACA65 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA65 broadcasting right now?
Yes. Mode-S 4ACA65 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA65, octal 22545145, decimal 4,901,477.
What flights does 4ACA65 operate?
Mode-S 4ACA65 has broadcast 14 distinct callsigns, including SAS925, SAS987, SAS926, SAS988, SAS936.