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sensors Mode-S transponder

4ACA68

ICAO 24-bit transponder address · allocated to Sweden

Hex
4ACA68
Octal
22545150
Decimal
4,901,480
Country
SE
No current signal · last broadcast 5h ago
Flights observed
75
Distinct callsigns
5
Country
SE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 4ACA68.

Country allocation

The ICAO 24-bit address 4ACA68 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 5 distinct

Callsign Airline Flights Last seen
SAS987 - 32 2026-06-30
SAS988 - 18 2026-06-27
SAS984 Scandinavian Airlines System 12 2026-06-29
SAS983 Scandinavian Airlines System 12 2026-06-28
SAS9156 Scandinavian Airlines System 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-30 SAS987 - Jun 30, 08:50 UTCJun 30, 09:15 UTC25m
2026-06-29 SAS987 - Jun 29, 22:10 UTCJun 30, 08:05 UTC9h 56m
2026-06-29 SAS984 HND → CPH Jun 29, 02:39 UTCJun 29, 15:34 UTC12h 55m
2026-06-28 SAS983 CPH → NRT Jun 28, 12:09 UTCJun 29, 00:20 UTC12h 10m
2026-06-27 SAS988 ICN → CPH Jun 27, 14:45 UTCJun 28, 03:35 UTC12h 50m
2026-06-27 SAS987 - Jun 27, 08:49 UTCJun 27, 09:09 UTC20m
2026-06-26 SAS987 - Jun 26, 22:19 UTCJun 27, 07:59 UTC9h 40m
2026-06-26 SAS984 HND → CPH Jun 26, 02:30 UTCJun 26, 15:29 UTC13h 0m
2026-06-25 SAS983 CPH → NRT Jun 25, 10:59 UTCJun 25, 22:54 UTC11h 55m
2026-06-23 SAS988 - Jun 23, 14:55 UTCJun 24, 03:50 UTC12h 55m
2026-06-23 SAS987 - Jun 23, 08:35 UTCJun 23, 08:59 UTC25m
2026-06-22 SAS987 - Jun 22, 22:15 UTCJun 23, 07:49 UTC9h 35m
2026-06-22 SAS984 HND → CPH Jun 22, 02:34 UTCJun 22, 15:35 UTC13h 0m
2026-06-21 SAS983 CPH → NRT Jun 21, 12:40 UTCJun 22, 00:24 UTC11h 45m
2026-06-20 SAS988 - Jun 20, 16:00 UTCJun 21, 03:59 UTC12h 0m
2026-06-20 SAS988 - Jun 20, 14:44 UTCJun 20, 14:59 UTC15m
2026-06-20 SAS987 - Jun 20, 08:34 UTCJun 20, 09:05 UTC30m
2026-06-19 SAS987 - Jun 19, 22:09 UTCJun 20, 07:44 UTC9h 35m
2026-06-18 SAS988 ICN → CPH Jun 18, 14:50 UTCJun 19, 03:39 UTC12h 49m
2026-06-18 SAS987 - Jun 18, 08:50 UTCJun 18, 09:25 UTC35m
2026-06-17 SAS987 - Jun 17, 22:05 UTCJun 18, 01:45 UTC3h 40m
2026-06-16 SAS988 ICN → CPH Jun 16, 14:45 UTCJun 17, 03:35 UTC12h 51m
2026-06-16 SAS987 - Jun 16, 09:00 UTCJun 16, 09:25 UTC25m
2026-06-15 SAS987 - Jun 15, 22:15 UTCJun 16, 02:00 UTC3h 45m
2026-06-15 SAS984 HND → CPH Jun 15, 02:30 UTCJun 15, 15:15 UTC12h 45m
2026-06-14 SAS983 CPH → NRT Jun 14, 11:05 UTCJun 14, 23:20 UTC12h 14m
2026-06-12 SAS988 - Jun 12, 14:45 UTCJun 13, 03:30 UTC12h 45m
2026-06-12 SAS987 CPH → ICN Jun 12, 09:00 UTCJun 12, 09:30 UTC30m
2026-06-11 SAS987 CPH → ICN Jun 11, 22:10 UTCJun 12, 08:20 UTC10h 11m
2026-06-09 SAS988 ICN → CPH Jun 9, 15:00 UTCJun 10, 03:55 UTC12h 55m
2026-06-09 SAS987 CPH → ICN Jun 9, 08:55 UTCJun 9, 09:15 UTC20m
2026-06-08 SAS987 CPH → ICN Jun 8, 22:10 UTCJun 9, 08:05 UTC9h 55m
2026-06-08 SAS984 HND → CPH Jun 8, 02:30 UTCJun 8, 15:55 UTC13h 25m
2026-06-07 SAS983 CPH → NRT Jun 7, 11:05 UTCJun 7, 23:10 UTC12h 5m
2026-06-06 SAS988 ICN → CPH Jun 6, 15:54 UTCJun 7, 03:30 UTC11h 35m
2026-06-06 SAS988 ICN → CPH Jun 6, 14:40 UTCJun 6, 14:59 UTC20m
2026-06-06 SAS987 CPH → ICN Jun 6, 08:40 UTCJun 6, 09:00 UTC20m
2026-06-05 SAS987 CPH → ICN Jun 5, 22:05 UTCJun 6, 07:55 UTC9h 50m
2026-06-05 SAS984 HND → CPH Jun 5, 02:50 UTCJun 5, 16:40 UTC13h 50m
2026-06-04 SAS983 CPH → NRT Jun 4, 11:10 UTCJun 4, 23:00 UTC11h 50m
2026-06-02 SAS988 ICN → CPH Jun 2, 14:45 UTCJun 3, 03:35 UTC12h 50m
2026-06-02 SAS987 CPH → ICN Jun 2, 08:20 UTCJun 2, 08:45 UTC25m
2026-06-01 SAS987 CPH → ICN Jun 1, 22:00 UTCJun 2, 04:25 UTC6h 25m
2026-06-01 SAS984 HND → CPH Jun 1, 02:40 UTCJun 1, 15:55 UTC13h 15m
2026-05-31 SAS983 CPH → NRT May 31, 11:20 UTCMay 31, 23:25 UTC12h 5m
2026-05-30 SAS988 ICN → CPH May 30, 14:45 UTCMay 31, 01:11 UTC10h 26m
2026-05-30 SAS987 CPH → ICN May 30, 08:35 UTCMay 30, 08:55 UTC20m
2026-05-29 SAS987 CPH → ICN May 29, 22:10 UTCMay 30, 07:45 UTC9h 35m
2026-05-28 SAS988 ICN → CPH May 28, 14:50 UTCMay 29, 04:10 UTC13h 20m
2026-05-28 SAS987 CPH → ICN May 28, 08:30 UTCMay 28, 08:50 UTC20m

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.

Mode-S 4ACA68 frequently asked

What is Mode-S code 4ACA68?
4ACA68 is an ICAO 24-bit transponder address. Allocated to Sweden.
Where is Mode-S 4ACA68 registered?
Mode-S code 4ACA68 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA68 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA68, octal 22545150, decimal 4,901,480.
What flights does 4ACA68 operate?
Mode-S 4ACA68 has broadcast 5 distinct callsigns, including SAS987, SAS988, SAS984, SAS983, SAS9156.