sensors Mode-S transponder

4ACA67

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACA67
Octal
22545147
Decimal
4,901,479
Country
SE
Tail
SE-RSG
Type
A359
No current signal · last broadcast 17h ago
Flights observed
10
Distinct callsigns
4
Country
SE
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 4ACA67.

Country allocation

The ICAO 24-bit address 4ACA67 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 4 distinct

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS926 IAD → CPH Apr 14, 07:10 UTCApr 14, 07:50 UTC40m
2026-04-14 SAS926 IAD → CPH Apr 14, 06:45 UTCApr 14, 07:10 UTC25m
2026-04-13 SAS925 CPH → IAD Apr 13, 19:50 UTCApr 13, 21:45 UTC1h 55m
2026-04-13 SAS925 CPH → IAD Apr 13, 16:15 UTCApr 13, 20:10 UTC3h 55m
2026-04-13 SAS925 CPH → IAD Apr 13, 15:55 UTCApr 13, 19:40 UTC3h 45m
2026-04-13 SAS925 CPH → IAD Apr 13, 13:35 UTCApr 13, 16:15 UTC2h 40m
2026-04-13 SAS936 SFO → CPH Apr 13, 09:20 UTCApr 13, 10:30 UTC1h 10m
2026-04-13 SAS936 SFO → CPH Apr 13, 07:45 UTCApr 13, 08:15 UTC30m
2026-04-13 SAS936 SFO → CPH Apr 13, 00:45 UTCApr 13, 03:25 UTC2h 40m
2026-04-12 SAS935 CPH → SFO Apr 12, 18:50 UTCApr 12, 20:15 UTC1h 25m

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

Mode-S 4ACA67 frequently asked

What is Mode-S code 4ACA67?
4ACA67 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSG.
Where is Mode-S 4ACA67 registered?
Mode-S code 4ACA67 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA67 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA67, octal 22545147, decimal 4,901,479.
What flights does 4ACA67 operate?
Mode-S 4ACA67 has broadcast 4 distinct callsigns, including SAS925, SAS936, SAS926, SAS935.