Apparatus

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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 18h ago
Flights observed
82
Distinct callsigns
15
Country
SE
Last broadcast
18h 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 Scandinavian Airlines System 10 2026-06-01
SAS935 Scandinavian Airlines System 10 2026-05-31
SAS987 Scandinavian Airlines System 9 2026-06-04
SAS925 Scandinavian Airlines System 8 2026-06-01
SAS988 Scandinavian Airlines System 7 2026-06-04
SAS984 Scandinavian Airlines System 7 2026-06-11
SAS983 Scandinavian Airlines System 7 2026-06-10
SAS926 Scandinavian Airlines System 7 2026-06-02
SAS930 Scandinavian Airlines System 4 2026-06-09
SAS929 Scandinavian Airlines System 4 2026-06-08
SAS944 Scandinavian Airlines System 2 2026-05-27
SAS943 Scandinavian Airlines System 2 2026-05-26
SAS938 Scandinavian Airlines System 2 2026-06-09
SAS937 Scandinavian Airlines System 2 2026-06-09
SAS9136 Scandinavian Airlines System 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-11 SAS984 HND → CPH Jun 11, 02:25 UTCJun 11, 14:55 UTC12h 30m
2026-06-10 SAS983 CPH → NRT Jun 10, 11:10 UTCJun 10, 23:25 UTC12h 15m
2026-06-09 SAS938 ARN → AES Jun 9, 23:30 UTCJun 10, 08:25 UTC8h 55m
2026-06-09 SAS937 SEA → CPH Jun 9, 11:35 UTCJun 9, 20:55 UTC9h 20m
2026-06-09 SAS930 ATL → CPH Jun 9, 00:45 UTCJun 9, 09:00 UTC8h 15m
2026-06-08 SAS929 CPH → ATL Jun 8, 12:25 UTCJun 8, 20:55 UTC8h 30m
2026-06-07 SAS938 ARN → AES Jun 7, 23:15 UTCJun 8, 08:05 UTC8h 50m
2026-06-07 SAS937 SEA → CPH Jun 7, 11:15 UTCJun 7, 20:10 UTC8h 55m
2026-06-06 SAS930 ATL → CPH Jun 6, 23:44 UTCJun 7, 07:50 UTC8h 5m
2026-06-06 SAS929 CPH → ATL Jun 6, 11:55 UTCJun 6, 20:30 UTC8h 35m
2026-06-05 SAS930 ATL → CPH Jun 5, 23:45 UTCJun 6, 08:00 UTC8h 15m
2026-06-05 SAS929 CPH → ATL Jun 5, 11:45 UTCJun 5, 20:25 UTC8h 40m
2026-06-04 SAS988 ICN → CPH Jun 4, 14:50 UTCJun 5, 03:45 UTC12h 55m
2026-06-04 SAS987 CPH → ICN Jun 4, 08:50 UTCJun 4, 09:10 UTC20m
2026-06-03 SAS987 CPH → ICN Jun 3, 22:20 UTCJun 4, 08:00 UTC9h 40m
2026-06-03 SAS984 HND → CPH Jun 3, 02:40 UTCJun 3, 15:45 UTC13h 5m
2026-06-02 SAS983 CPH → NRT Jun 2, 11:05 UTCJun 2, 23:00 UTC11h 55m
2026-06-02 SAS926 IAD → CPH Jun 2, 00:20 UTCJun 2, 07:30 UTC7h 10m
2026-06-01 SAS925 CPH → IAD Jun 1, 12:35 UTCJun 1, 20:15 UTC7h 40m
2026-06-01 SAS936 SFO → CPH Jun 1, 00:10 UTCJun 1, 09:50 UTC9h 40m
2026-05-31 SAS935 CPH → SFO May 31, 11:20 UTCMay 31, 21:20 UTC10h 0m
2026-05-31 SAS930 ATL → CPH May 31, 00:00 UTCMay 31, 01:11 UTC1h 11m
2026-05-30 SAS929 CPH → ATL May 30, 11:50 UTCMay 30, 20:20 UTC8h 30m
2026-05-29 SAS988 ICN → CPH May 29, 16:15 UTCMay 30, 04:05 UTC11h 50m
2026-05-29 SAS988 ICN → CPH May 29, 14:55 UTCMay 29, 15:15 UTC20m
2026-05-29 SAS987 CPH → ICN May 29, 08:25 UTCMay 29, 08:45 UTC20m
2026-05-28 SAS987 CPH → ICN May 28, 22:05 UTCMay 29, 07:35 UTC9h 30m
2026-05-28 SAS984 HND → CPH May 28, 02:35 UTCMay 28, 15:20 UTC12h 45m
2026-05-27 SAS983 CPH → NRT May 27, 11:00 UTCMay 27, 23:05 UTC12h 5m
2026-05-27 SAS944 ORD → CPH May 27, 00:44 UTCMay 27, 08:00 UTC7h 15m
2026-05-26 SAS943 CPH → ORD May 26, 12:50 UTCMay 26, 21:25 UTC8h 35m
2026-05-26 SAS936 SFO → CPH May 26, 00:29 UTCMay 26, 10:14 UTC9h 45m
2026-05-25 SAS935 CPH → SFO May 25, 11:15 UTCMay 25, 21:49 UTC10h 35m
2026-05-25 SAS944 ORD → CPH May 25, 05:25 UTCMay 25, 07:55 UTC2h 30m
2026-05-24 SAS943 CPH → ORD May 24, 12:40 UTCMay 24, 21:45 UTC9h 5m
2026-05-24 SAS926 IAD → CPH May 24, 00:30 UTCMay 24, 07:35 UTC7h 5m
2026-05-23 SAS925 CPH → IAD May 23, 12:55 UTCMay 23, 20:55 UTC8h 0m
2026-05-23 SAS936 SFO → CPH May 23, 00:10 UTCMay 23, 10:05 UTC9h 54m
2026-05-22 SAS935 CPH → SFO May 22, 11:05 UTCMay 22, 21:20 UTC10h 15m
2026-05-22 SAS926 IAD → CPH May 22, 00:35 UTCMay 22, 07:35 UTC7h 0m
2026-05-21 SAS925 CPH → IAD May 21, 12:35 UTCMay 21, 20:50 UTC8h 15m
2026-05-20 SAS936 SFO → CPH May 20, 23:55 UTCMay 21, 10:05 UTC10h 10m
2026-05-20 SAS935 CPH → SFO May 20, 11:00 UTCMay 20, 20:50 UTC9h 50m
2026-05-19 SAS936 SFO → CPH May 19, 00:00 UTCMay 19, 10:00 UTC10h 0m
2026-05-18 SAS935 CPH → SFO May 18, 11:00 UTCMay 18, 21:25 UTC10h 24m
2026-05-18 SAS926 IAD → CPH May 18, 00:35 UTCMay 18, 07:50 UTC7h 15m
2026-05-17 SAS925 CPH → IAD May 17, 18:50 UTCMay 17, 20:35 UTC1h 45m
2026-05-17 SAS925 CPH → IAD May 17, 12:40 UTCMay 17, 18:45 UTC6h 5m
2026-05-17 SAS936 SFO → CPH May 17, 00:15 UTCMay 17, 10:00 UTC9h 45m
2026-05-16 SAS935 CPH → SFO May 16, 11:05 UTCMay 16, 21:05 UTC10h 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-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 18h 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, SAS988.