sensors Mode-S transponder

4ACA6C

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACA6C
Octal
22545154
Decimal
4,901,484
Country
SE
Tail
SE-RSL
Type
E195
No current signal · last broadcast 14h ago
Flights observed
15
Distinct callsigns
14
Country
SE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4ACA6C.

Country allocation

The ICAO 24-bit address 4ACA6C 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 14 distinct

Callsign Airline Flights Last seen
SAS1905 - 2 2026-04-13
SAS65L Scandinavian Airlines System 1 2026-04-13
SAS486 Scandinavian Airlines System 1 2026-04-14
SAS4486 - 1 2026-04-12
SAS43U - 1 2026-04-13
SAS4189 - 1 2026-04-12
SAS4185 - 1 2026-04-12
SAS4161 - 1 2026-04-13
SAS4154 - 1 2026-04-13
SAS4141 - 1 2026-04-13
SAS39K Scandinavian Airlines System 1 2026-04-14
SAS320 - 1 2026-04-13
SAS262 - 1 2026-04-13
SAS1902 - 1 2026-04-13

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS486 OSL → ARN Apr 14, 09:50 UTCApr 14, 10:35 UTC45m
2026-04-14 SAS39K HAU → OSL Apr 14, 05:15 UTCApr 14, 05:25 UTC10m
2026-04-13 SAS320 - Apr 13, 19:10 UTCApr 13, 19:45 UTC35m
2026-04-13 SAS1902 - Apr 13, 17:35 UTCApr 13, 18:25 UTC50m
2026-04-13 SAS1905 - Apr 13, 16:15 UTCApr 13, 16:45 UTC30m
2026-04-13 SAS1905 - Apr 13, 15:45 UTCApr 13, 16:15 UTC30m
2026-04-13 SAS43U - Apr 13, 14:15 UTCApr 13, 14:50 UTC35m
2026-04-13 SAS65L OSL → HAU Apr 13, 12:45 UTCApr 13, 13:20 UTC35m
2026-04-13 SAS262 - Apr 13, 11:00 UTCApr 13, 11:35 UTC35m
2026-04-13 SAS4161 - Apr 13, 08:25 UTCApr 13, 09:15 UTC50m
2026-04-13 SAS4154 - Apr 13, 06:35 UTCApr 13, 07:20 UTC45m
2026-04-13 SAS4141 - Apr 13, 05:00 UTCApr 13, 05:50 UTC50m
2026-04-12 SAS4486 - Apr 12, 19:50 UTCApr 12, 20:15 UTC25m
2026-04-12 SAS4189 - Apr 12, 18:30 UTCApr 12, 18:55 UTC25m
2026-04-12 SAS4185 - Apr 12, 17:15 UTCApr 12, 17:45 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-RSL page for operator, model, and routing details .

Mode-S 4ACA6C frequently asked

What is Mode-S code 4ACA6C?
4ACA6C is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSL.
Where is Mode-S 4ACA6C registered?
Mode-S code 4ACA6C is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA6C broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA6C, octal 22545154, decimal 4,901,484.
What flights does 4ACA6C operate?
Mode-S 4ACA6C has broadcast 14 distinct callsigns, including SAS1905, SAS65L, SAS486, SAS4486, SAS43U.