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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 SAS935 · 40,000 ft
Flights observed
206
Distinct callsigns
14
Country
SE
Last broadcast
Jul 26, 20:40 UTC

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 26 2026-07-26
SAS936 Scandinavian Airlines System 25 2026-07-26
SAS935 Scandinavian Airlines System 25 2026-07-25
SAS926 Scandinavian Airlines System 23 2026-07-24
SAS987 - 22 2026-07-16
SAS988 - 19 2026-07-16
SAS983 - 14 2026-07-14
SAS984 - 13 2026-07-15
SAS930 - 12 2026-07-18
SAS929 - 11 2026-07-17
SAS938 Scandinavian Airlines System 7 2026-07-24
SAS937 Scandinavian Airlines System 7 2026-07-24
SAS916 Scandinavian Airlines System 1 2026-05-16
SAS915 Scandinavian Airlines System 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS925 CPH → IAD Jul 26, 12:40 UTCJul 26, 20:35 UTC7h 55m
2026-07-26 SAS936 SFO → CPH Jul 26, 00:00 UTCJul 26, 09:35 UTC9h 36m
2026-07-25 SAS935 CPH → SFO Jul 25, 11:05 UTCJul 25, 21:30 UTC10h 25m
2026-07-24 SAS938 ARN → AES Jul 24, 23:30 UTCJul 25, 08:15 UTC8h 45m
2026-07-24 SAS937 SEA → CPH Jul 24, 11:15 UTCJul 24, 20:30 UTC9h 15m
2026-07-24 SAS926 IAD → CPH Jul 24, 00:40 UTCJul 24, 07:20 UTC6h 40m
2026-07-23 SAS925 CPH → IAD Jul 23, 12:50 UTCJul 23, 21:00 UTC8h 10m
2026-07-23 SAS936 SFO → CPH Jul 23, 00:15 UTCJul 23, 09:45 UTC9h 30m
2026-07-22 SAS935 CPH → SFO Jul 22, 11:30 UTCJul 22, 21:35 UTC10h 5m
2026-07-21 SAS936 SFO → CPH Jul 21, 00:20 UTCJul 21, 09:50 UTC9h 30m
2026-07-20 SAS935 CPH → SFO Jul 20, 11:05 UTCJul 20, 21:45 UTC10h 40m
2026-07-19 SAS938 SEA → CPH Jul 19, 23:25 UTCJul 20, 08:00 UTC8h 35m
2026-07-19 SAS937 SEA → CPH Jul 19, 11:25 UTCJul 19, 20:40 UTC9h 15m
2026-07-18 SAS930 ATL → CPH Jul 18, 00:29 UTCJul 18, 08:30 UTC8h 1m
2026-07-17 SAS929 CPH → ATL Jul 17, 11:50 UTCJul 17, 21:30 UTC9h 40m
2026-07-16 SAS988 - Jul 16, 16:05 UTCJul 17, 03:55 UTC11h 50m
2026-07-16 SAS988 - Jul 16, 14:50 UTCJul 16, 15:14 UTC25m
2026-07-16 SAS987 - Jul 16, 08:15 UTCJul 16, 08:35 UTC20m
2026-07-15 SAS987 - Jul 15, 22:05 UTCJul 16, 07:25 UTC9h 20m
2026-07-15 SAS984 HND → CPH Jul 15, 02:30 UTCJul 15, 15:45 UTC13h 15m
2026-07-14 SAS983 CPH → HND Jul 14, 11:05 UTCJul 14, 23:05 UTC11h 59m
2026-07-13 SAS938 SEA → CPH Jul 13, 22:30 UTCJul 14, 07:00 UTC8h 30m
2026-07-12 SAS937 CPH → SEA Jul 12, 11:40 UTCJul 12, 21:05 UTC9h 25m
2026-07-11 SAS930 ATL → CPH Jul 11, 23:55 UTCJul 12, 07:55 UTC8h 0m
2026-07-11 SAS929 CPH → ATL Jul 11, 11:55 UTCJul 11, 21:25 UTC9h 30m
2026-07-11 SAS926 IAD → CPH Jul 11, 00:40 UTCJul 11, 07:50 UTC7h 10m
2026-07-10 SAS925 CPH → IAD Jul 10, 12:45 UTCJul 10, 21:00 UTC8h 15m
2026-07-10 SAS936 SFO → CPH Jul 10, 00:20 UTCJul 10, 10:10 UTC9h 50m
2026-07-09 SAS935 CPH → SFO Jul 9, 11:10 UTCJul 9, 21:25 UTC10h 15m
2026-07-09 SAS926 IAD → CPH Jul 9, 00:20 UTCJul 9, 07:35 UTC7h 15m
2026-07-08 SAS925 CPH → IAD Jul 8, 12:40 UTCJul 8, 20:45 UTC8h 5m
2026-07-08 SAS936 - Jul 8, 00:20 UTCJul 8, 09:50 UTC9h 30m
2026-07-07 SAS935 CPH → SFO Jul 7, 11:10 UTCJul 7, 21:35 UTC10h 25m
2026-07-06 SAS930 ATL → CPH Jul 6, 23:50 UTCJul 7, 07:45 UTC7h 55m
2026-07-06 SAS929 CPH → ATL Jul 6, 11:45 UTCJul 6, 20:50 UTC9h 5m
2026-07-05 SAS926 IAD → CPH Jul 5, 03:00 UTCJul 5, 10:15 UTC7h 15m
2026-07-04 SAS925 CPH → IAD Jul 4, 12:50 UTCJul 4, 20:55 UTC8h 5m
2026-07-04 SAS936 SFO → CPH Jul 4, 00:10 UTCJul 4, 10:05 UTC9h 55m
2026-07-03 SAS935 CPH → SFO Jul 3, 11:40 UTCJul 3, 21:45 UTC10h 5m
2026-07-03 SAS930 - Jul 3, 02:55 UTCJul 3, 08:20 UTC5h 25m
2026-07-03 SAS930 - Jul 3, 00:25 UTCJul 3, 02:50 UTC2h 25m
2026-07-02 SAS929 CPH → ATL Jul 2, 12:05 UTCJul 2, 21:00 UTC8h 55m
2026-06-30 SAS938 SEA → CPH Jun 30, 23:45 UTCJul 1, 08:35 UTC8h 50m
2026-06-30 SAS937 - Jun 30, 11:25 UTCJun 30, 20:25 UTC9h 0m
2026-06-30 SAS926 IAD → CPH Jun 30, 00:30 UTCJun 30, 07:40 UTC7h 11m
2026-06-29 SAS925 CPH → IAD Jun 29, 12:49 UTCJun 29, 20:30 UTC7h 40m
2026-06-29 SAS936 - Jun 29, 00:10 UTCJun 29, 10:04 UTC9h 55m
2026-06-28 SAS935 CPH → SFO Jun 28, 11:45 UTCJun 28, 21:34 UTC9h 50m
2026-06-28 SAS926 IAD → CPH Jun 28, 00:25 UTCJun 28, 07:40 UTC7h 15m
2026-06-27 SAS925 CPH → IAD Jun 27, 12:50 UTCJun 27, 20:49 UTC8h 0m

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, SAS936, SAS935, SAS926, SAS987.