sensors Mode-S transponder

4ACA6E

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RSN · EMBRAER ERJ-190-100

Hex
4ACA6E
Octal
22545156
Decimal
4,901,486
Country
SE
Tail
SE-RSN
Type
E190
No current signal · last broadcast 12h ago
Flights observed
17
Distinct callsigns
15
Country
SE
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4ACA6E.

Country allocation

The ICAO 24-bit address 4ACA6E 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
SAS212 - 2 2026-04-13
SAS1326 - 2 2026-04-13
SAS4047 - 1 2026-04-12
SAS4044 - 1 2026-04-12
SAS355 - 1 2026-04-13
SAS338 - 1 2026-04-13
SAS2306 - 1 2026-04-13
SAS2303 Scandinavian Airlines System 1 2026-04-13
SAS211 - 1 2026-04-13
SAS1457 Scandinavian Airlines System 1 2026-04-14
SAS1330 - 1 2026-04-13
SAS1327 - 1 2026-04-13
SAS1315 Scandinavian Airlines System 1 2026-04-14
SAS1314 Scandinavian Airlines System 1 2026-04-14
SAS1313 Scandinavian Airlines System 1 2026-04-14

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS1457 OSL → CPH Apr 14, 10:00 UTCApr 14, 10:55 UTC55m
2026-04-14 SAS1315 AES → OSL Apr 14, 08:05 UTCApr 14, 08:45 UTC40m
2026-04-14 SAS1314 OSL → AES Apr 14, 06:45 UTCApr 14, 07:05 UTC20m
2026-04-14 SAS1313 AES → OSL Apr 14, 05:15 UTCApr 14, 05:45 UTC30m
2026-04-13 SAS1330 - Apr 13, 19:00 UTCApr 13, 19:25 UTC25m
2026-04-13 SAS1327 - Apr 13, 17:30 UTCApr 13, 18:05 UTC35m
2026-04-13 SAS1326 - Apr 13, 16:15 UTCApr 13, 16:35 UTC20m
2026-04-13 SAS1326 - Apr 13, 16:05 UTCApr 13, 16:15 UTC10m
2026-04-13 SAS2306 - Apr 13, 14:20 UTCApr 13, 14:55 UTC35m
2026-04-13 SAS2303 OSL → KSU Apr 13, 12:50 UTCApr 13, 13:20 UTC30m
2026-04-13 SAS355 TRD → OSL Apr 13, 11:05 UTCApr 13, 11:50 UTC45m
2026-04-13 SAS338 - Apr 13, 09:40 UTCApr 13, 10:20 UTC40m
2026-04-13 SAS212 - Apr 13, 08:20 UTCApr 13, 08:30 UTC10m
2026-04-13 SAS212 - Apr 13, 08:00 UTCApr 13, 08:15 UTC15m
2026-04-13 SAS211 - Apr 13, 06:45 UTCApr 13, 07:25 UTC40m
2026-04-12 SAS4044 - Apr 12, 19:50 UTCApr 12, 20:15 UTC25m
2026-04-12 SAS4047 - Apr 12, 18:05 UTCApr 12, 18:40 UTC35m

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

Mode-S 4ACA6E frequently asked

What is Mode-S code 4ACA6E?
4ACA6E is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSN.
Where is Mode-S 4ACA6E registered?
Mode-S code 4ACA6E is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA6E broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA6E, octal 22545156, decimal 4,901,486.
What flights does 4ACA6E operate?
Mode-S 4ACA6E has broadcast 15 distinct callsigns, including SAS212, SAS1326, SAS4047, SAS4044, SAS355.