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sensors Mode-S transponder

4ACA64

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACA64
Octal
22545144
Decimal
4,901,476
Country
SE
Tail
SE-RSD
Type
A359
No current signal · last broadcast 11h ago
Flights observed
161
Distinct callsigns
15
Country
SE
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 4ACA64.

Country allocation

The ICAO 24-bit address 4ACA64 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 15 distinct

Callsign Airline Flights Last seen
SAS936 - 20 2026-07-17
SAS935 - 20 2026-07-16
SAS987 Scandinavian Airlines System 19 2026-07-25
SAS925 - 17 2026-07-17
SAS926 Scandinavian Airlines System 16 2026-07-18
SAS983 Scandinavian Airlines System 14 2026-07-26
SAS984 Scandinavian Airlines System 13 2026-07-24
SAS988 Scandinavian Airlines System 12 2026-07-25
SAS930 - 8 2026-07-05
SAS929 Scandinavian Airlines System 7 2026-07-04
SAS938 Scandinavian Airlines System 5 2026-07-21
SAS937 Scandinavian Airlines System 5 2026-07-21
SAS944 Scandinavian Airlines System 2 2026-05-27
SAS943 Scandinavian Airlines System 2 2026-05-26
SAS9136 Scandinavian Airlines System 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS983 CPH → NRT Jul 26, 11:00 UTCJul 26, 23:00 UTC12h 0m
2026-07-25 SAS988 ICN → CPH Jul 25, 14:55 UTCJul 26, 03:20 UTC12h 25m
2026-07-25 SAS987 CPH → ICN Jul 25, 08:30 UTCJul 25, 08:55 UTC25m
2026-07-24 SAS987 CPH → ICN Jul 24, 22:00 UTCJul 25, 07:50 UTC9h 50m
2026-07-24 SAS984 HND → CPH Jul 24, 02:30 UTCJul 24, 15:05 UTC12h 35m
2026-07-23 SAS983 CPH → NRT Jul 23, 11:20 UTCJul 23, 23:50 UTC12h 30m
2026-07-21 SAS938 ARN → AES Jul 21, 23:25 UTCJul 22, 03:50 UTC4h 25m
2026-07-21 SAS937 SEA → CPH Jul 21, 11:25 UTCJul 21, 20:50 UTC9h 25m
2026-07-20 SAS988 ICN → CPH Jul 20, 14:45 UTCJul 21, 03:40 UTC12h 54m
2026-07-20 SAS987 CPH → ICN Jul 20, 08:15 UTCJul 20, 08:40 UTC25m
2026-07-19 SAS987 CPH → ICN Jul 19, 22:05 UTCJul 20, 01:50 UTC3h 45m
2026-07-19 SAS984 HND → CPH Jul 19, 02:20 UTCJul 19, 15:10 UTC12h 50m
2026-07-18 SAS983 CPH → HND Jul 18, 11:20 UTCJul 18, 23:20 UTC12h 0m
2026-07-18 SAS926 IAD → CPH Jul 18, 00:39 UTCJul 18, 07:55 UTC7h 16m
2026-07-17 SAS925 CPH → IAD Jul 17, 12:50 UTCJul 17, 20:50 UTC8h 0m
2026-07-17 SAS936 SFO → CPH Jul 17, 00:35 UTCJul 17, 10:05 UTC9h 30m
2026-07-16 SAS935 CPH → SFO Jul 16, 10:59 UTCJul 16, 21:30 UTC10h 30m
2026-07-15 SAS988 - Jul 15, 14:50 UTCJul 16, 03:35 UTC12h 45m
2026-07-15 SAS987 - Jul 15, 08:20 UTCJul 15, 08:40 UTC20m
2026-07-14 SAS987 - Jul 14, 22:10 UTCJul 15, 07:30 UTC9h 19m
2026-07-14 SAS984 HND → CPH Jul 14, 02:25 UTCJul 14, 15:30 UTC13h 5m
2026-07-13 SAS983 - Jul 13, 11:15 UTCJul 13, 23:45 UTC12h 30m
2026-07-13 SAS926 IAD → CPH Jul 13, 00:30 UTCJul 13, 08:10 UTC7h 40m
2026-07-12 SAS925 CPH → IAD Jul 12, 12:45 UTCJul 12, 20:45 UTC8h 0m
2026-07-12 SAS936 SFO → CPH Jul 12, 00:15 UTCJul 12, 09:50 UTC9h 35m
2026-07-11 SAS935 CPH → SFO Jul 11, 10:55 UTCJul 11, 21:35 UTC10h 40m
2026-07-10 SAS988 - Jul 10, 14:45 UTCJul 11, 03:35 UTC12h 50m
2026-07-10 SAS987 - Jul 10, 08:30 UTCJul 10, 09:00 UTC30m
2026-07-09 SAS987 - Jul 9, 22:15 UTCJul 10, 07:45 UTC9h 30m
2026-07-09 SAS984 HND → CPH Jul 9, 02:30 UTCJul 9, 15:35 UTC13h 5m
2026-07-08 SAS983 CPH → HND Jul 8, 11:25 UTCJul 8, 23:40 UTC12h 15m
2026-07-07 SAS938 SEA → CPH Jul 7, 23:20 UTCJul 8, 08:00 UTC8h 40m
2026-07-07 SAS937 CPH → SEA Jul 7, 11:20 UTCJul 7, 20:30 UTC9h 10m
2026-07-07 SAS926 IAD → CPH Jul 7, 01:10 UTCJul 7, 08:05 UTC6h 55m
2026-07-06 SAS925 CPH → IAD Jul 6, 12:40 UTCJul 6, 20:40 UTC8h 0m
2026-07-06 SAS936 - Jul 6, 00:25 UTCJul 6, 09:55 UTC9h 30m
2026-07-05 SAS935 CPH → SFO Jul 5, 11:10 UTCJul 5, 21:40 UTC10h 30m
2026-07-05 SAS930 - Jul 5, 06:45 UTCJul 5, 08:25 UTC1h 40m
2026-07-05 SAS930 - Jul 5, 00:20 UTCJul 5, 03:05 UTC2h 45m
2026-07-04 SAS929 CPH → ATL Jul 4, 12:00 UTCJul 4, 20:55 UTC8h 55m
2026-07-04 SAS938 SEA → CPH Jul 4, 00:50 UTCJul 4, 09:25 UTC8h 35m
2026-07-03 SAS937 - Jul 3, 11:30 UTCJul 3, 20:30 UTC9h 0m
2026-07-03 SAS926 IAD → CPH Jul 3, 00:25 UTCJul 3, 07:30 UTC7h 5m
2026-07-02 SAS925 CPH → IAD Jul 2, 13:20 UTCJul 2, 21:20 UTC8h 0m
2026-07-02 SAS936 SFO → CPH Jul 2, 01:00 UTCJul 2, 11:00 UTC10h 0m
2026-07-01 SAS935 CPH → SFO Jul 1, 11:40 UTCJul 1, 21:50 UTC10h 10m
2026-06-30 SAS936 SFO → CPH Jun 30, 00:20 UTCJun 30, 10:20 UTC10h 1m
2026-06-29 SAS935 CPH → SFO Jun 29, 10:55 UTCJun 29, 20:49 UTC9h 55m
2026-06-29 SAS926 IAD → CPH Jun 29, 00:20 UTCJun 29, 07:30 UTC7h 10m
2026-06-28 SAS925 CPH → IAD Jun 28, 12:50 UTCJun 28, 20:45 UTC7h 55m

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

Mode-S 4ACA64 frequently asked

What is Mode-S code 4ACA64?
4ACA64 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSD.
Where is Mode-S 4ACA64 registered?
Mode-S code 4ACA64 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA64 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA64, octal 22545144, decimal 4,901,476.
What flights does 4ACA64 operate?
Mode-S 4ACA64 has broadcast 15 distinct callsigns, including SAS936, SAS935, SAS987, SAS925, SAS926.