sensors Mode-S transponder

4ACAB2

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RUR · AIRBUS A-320neo

Hex
4ACAB2
Octal
22545262
Decimal
4,901,554
Country
SE
Tail
SE-RUR
Type
A20N
No current signal · last broadcast 12h ago
Flights observed
15
Distinct callsigns
10
Country
SE
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4ACAB2.

Country allocation

The ICAO 24-bit address 4ACAB2 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 10 distinct

Callsign Airline Flights Last seen
SAS839 Scandinavian Airlines System 3 2026-04-13
SAS93L - 2 2026-04-13
SAS61G Scandinavian Airlines System 2 2026-04-13
SAS4112 - 2 2026-04-13
SAS56T - 1 2026-04-14
SAS4546 Scandinavian Airlines System 1 2026-04-14
SAS452 - 1 2026-04-14
SAS4117 - 1 2026-04-12
SAS4113 - 1 2026-04-13
SAS4107 - 1 2026-04-13

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS4546 OSL → ALF Apr 14, 10:10 UTCApr 14, 11:05 UTC55m
2026-04-14 SAS452 - Apr 14, 08:10 UTCApr 14, 09:00 UTC50m
2026-04-14 SAS56T - Apr 14, 06:10 UTCApr 14, 07:05 UTC55m
2026-04-13 SAS93L - Apr 13, 19:50 UTCApr 13, 20:40 UTC50m
2026-04-13 SAS93L - Apr 13, 18:55 UTCApr 13, 20:10 UTC1h 15m
2026-04-13 SAS839 OSL → CDG Apr 13, 16:15 UTCApr 13, 17:30 UTC1h 15m
2026-04-13 SAS839 OSL → CDG Apr 13, 15:50 UTCApr 13, 17:30 UTC1h 40m
2026-04-13 SAS839 OSL → CDG Apr 13, 15:25 UTCApr 13, 16:15 UTC50m
2026-04-13 SAS4113 - Apr 13, 13:00 UTCApr 13, 14:20 UTC1h 20m
2026-04-13 SAS4112 - Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 SAS4112 - Apr 13, 11:05 UTCApr 13, 12:05 UTC1h 0m
2026-04-13 SAS4107 BOO → OSL Apr 13, 08:50 UTCApr 13, 10:10 UTC1h 20m
2026-04-13 SAS61G OSL → BOO Apr 13, 07:55 UTCApr 13, 08:10 UTC15m
2026-04-13 SAS61G OSL → BOO Apr 13, 07:00 UTCApr 13, 08:10 UTC1h 10m
2026-04-12 SAS4117 - Apr 12, 17:15 UTCApr 12, 18:25 UTC1h 10m

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

Mode-S 4ACAB2 frequently asked

What is Mode-S code 4ACAB2?
4ACAB2 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RUR.
Where is Mode-S 4ACAB2 registered?
Mode-S code 4ACAB2 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAB2 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 4ACAB2, octal 22545262, decimal 4,901,554.
What flights does 4ACAB2 operate?
Mode-S 4ACAB2 has broadcast 10 distinct callsigns, including SAS839, SAS93L, SAS61G, SAS4112, SAS56T.