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sensors Mode-S transponder

4ACA75

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RSU · EMBRAER ERJ-190-200

Hex
4ACA75
Octal
22545165
Decimal
4,901,493
Country
SE
Tail
SE-RSU
Type
E195
No current signal · last broadcast 19m ago
Flights observed
693
Distinct callsigns
20
Country
SE
Last broadcast
19m ago

Last known position

Most recent position reported by Mode-S 4ACA75.

Country allocation

The ICAO 24-bit address 4ACA75 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 20 distinct

Callsign Airline Flights Last seen
SAS24F Scandinavian Airlines System 10 2026-07-02
SAS4561 Scandinavian Airlines System 9 2026-06-02
SAS2885 - 9 2026-07-03
SAS1875 - 9 2026-07-03
SAS1870 - 9 2026-07-03
SAS1320 - 9 2026-07-13
SAS58A - 8 2026-06-16
SAS48G - 8 2026-06-16
SAS4616 - 8 2026-06-16
SAS4615 - 8 2026-06-16
SAS4552 Scandinavian Airlines System 8 2026-06-02
SAS42F - 8 2026-06-18
SAS4176 Scandinavian Airlines System 8 2026-06-04
SAS31F - 8 2026-07-02
SAS1321 - 8 2026-07-13
SAS93P Scandinavian Airlines System 7 2026-06-15
SAS79F - 7 2026-06-18
SAS43T - 7 2026-06-18
SAS4174 - 7 2026-06-15
SAS2884 - 7 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 SAS1871 SVG → CPH Jul 15, 04:10 UTCJul 15, 05:10 UTC1h 0m
2026-07-14 SAS4051 OSL → SVG Jul 14, 20:15 UTCJul 14, 20:50 UTC35m
2026-07-14 SAS39A - Jul 14, 18:00 UTCJul 14, 19:15 UTC1h 15m
2026-07-14 SAS4122 - Jul 14, 15:55 UTCJul 14, 17:10 UTC1h 15m
2026-07-14 SAS216 KRS → OSL Jul 14, 14:05 UTCJul 14, 14:45 UTC40m
2026-07-14 SAS215 OSL → KRS Jul 14, 12:45 UTCJul 14, 13:15 UTC30m
2026-07-14 SAS834 - Jul 14, 09:05 UTCJul 14, 11:00 UTC1h 55m
2026-07-14 SAS97F - Jul 14, 05:20 UTCJul 14, 07:20 UTC2h 0m
2026-07-13 SAS4097 - Jul 13, 19:25 UTCJul 13, 20:40 UTC1h 15m
2026-07-13 SAS4096 - Jul 13, 17:00 UTCJul 13, 18:15 UTC1h 15m
2026-07-13 SAS274 - Jul 13, 14:30 UTCJul 13, 15:10 UTC40m
2026-07-13 SAS269 - Jul 13, 12:55 UTCJul 13, 13:35 UTC40m
2026-07-13 SAS1321 - Jul 13, 11:20 UTCJul 13, 12:00 UTC40m
2026-07-13 SAS1320 - Jul 13, 09:45 UTCJul 13, 10:15 UTC30m
2026-07-13 SAS4012 - Jul 13, 08:05 UTCJul 13, 08:45 UTC40m
2026-07-13 SAS4009 - Jul 13, 06:35 UTCJul 13, 07:10 UTC35m
2026-07-13 SAS4004 - Jul 13, 04:10 UTCJul 13, 04:50 UTC40m
2026-07-12 SAS4055 - Jul 12, 20:50 UTCJul 12, 21:25 UTC35m
2026-07-12 SAS379 TRD → OSL Jul 12, 18:40 UTCJul 12, 19:20 UTC40m
2026-07-12 SAS368 - Jul 12, 17:15 UTCJul 12, 17:55 UTC40m
2026-07-12 SAS222 - Jul 12, 15:20 UTCJul 12, 15:55 UTC35m
2026-07-12 SAS221 - Jul 12, 13:55 UTCJul 12, 14:30 UTC35m
2026-07-12 SAS2308 - Jul 12, 12:30 UTCJul 12, 13:10 UTC40m
2026-07-12 SAS2305 - Jul 12, 10:45 UTCJul 12, 11:10 UTC25m
2026-07-12 SAS4107 - Jul 12, 08:30 UTCJul 12, 09:45 UTC1h 15m
2026-07-12 SAS61G - Jul 12, 06:30 UTCJul 12, 07:45 UTC1h 15m
2026-07-11 SAS4782 - Jul 11, 18:25 UTCJul 11, 20:55 UTC2h 30m
2026-07-11 SAS4781 - Jul 11, 15:10 UTCJul 11, 17:25 UTC2h 15m
2026-07-11 SAS64P - Jul 11, 08:05 UTCJul 11, 09:50 UTC1h 45m
2026-07-11 SAS89C - Jul 11, 05:35 UTCJul 11, 06:55 UTC1h 20m
2026-07-10 SAS98E BRU → OSL Jul 10, 18:30 UTCJul 10, 20:10 UTC1h 40m
2026-07-10 SAS4745 OSL → BRU Jul 10, 15:45 UTCJul 10, 17:25 UTC1h 40m
2026-07-10 SAS91K CPH → OSL Jul 10, 13:55 UTCJul 10, 14:50 UTC55m
2026-07-10 SAS87F OSL → CPH Jul 10, 11:40 UTCJul 10, 12:35 UTC55m
2026-07-10 SAS822 - Jul 10, 09:05 UTCJul 10, 10:30 UTC1h 25m
2026-07-10 SAS821 OSL → AMS Jul 10, 06:10 UTCJul 10, 07:40 UTC1h 30m
2026-07-09 SAS1472 CPH → OSL Jul 9, 19:45 UTCJul 9, 20:35 UTC50m
2026-07-09 SAS77K OSL → CPH Jul 9, 17:25 UTCJul 9, 18:15 UTC50m
2026-07-09 SAS371 - Jul 9, 15:45 UTCJul 9, 16:20 UTC35m
2026-07-09 SAS354 - Jul 9, 14:25 UTCJul 9, 15:05 UTC40m
2026-07-09 SAS4113 - Jul 9, 12:05 UTCJul 9, 13:10 UTC1h 5m
2026-07-09 SAS4112 - Jul 9, 10:05 UTCJul 9, 11:20 UTC1h 15m
2026-07-09 SAS4107 - Jul 9, 07:45 UTCJul 9, 08:55 UTC1h 10m
2026-07-09 SAS61G - Jul 9, 05:50 UTCJul 9, 07:05 UTC1h 15m
2026-07-09 SAS15E KRS → OSL Jul 9, 04:05 UTCJul 9, 04:35 UTC30m
2026-07-08 SAS223 OSL → KRS Jul 8, 20:20 UTCJul 8, 21:00 UTC40m
2026-07-08 SAS98E - Jul 8, 17:25 UTCJul 8, 19:10 UTC1h 45m
2026-07-08 SAS4745 OSL → BRU Jul 8, 15:00 UTCJul 8, 16:30 UTC1h 30m
2026-07-08 SAS43U - Jul 8, 13:30 UTCJul 8, 14:10 UTC40m
2026-07-08 SAS65L OSL → HAU Jul 8, 12:10 UTCJul 8, 12:40 UTC30m

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

Mode-S 4ACA75 frequently asked

What is Mode-S code 4ACA75?
4ACA75 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSU.
Where is Mode-S 4ACA75 registered?
Mode-S code 4ACA75 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA75 broadcasting right now?
No active broadcast right now. Last signal was 19m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA75, octal 22545165, decimal 4,901,493.
What flights does 4ACA75 operate?
Mode-S 4ACA75 has broadcast 20 distinct callsigns, including SAS24F, SAS4561, SAS2885, SAS1875, SAS1870.