sensors Mode-S transponder

4ACB43

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACB43
Octal
22545503
Decimal
4,901,699
Country
SE
Tail
SE-RZC
Type
A20N
No current signal · last broadcast 17h ago
Flights observed
9
Distinct callsigns
7
Country
SE
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 4ACB43.

Country allocation

The ICAO 24-bit address 4ACB43 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 7 distinct

Callsign Airline Flights Last seen
SAS841 Scandinavian Airlines System 2 2026-04-14
SAS4414 - 2 2026-04-13
SAS847 Scandinavian Airlines System 1 2026-04-14
SAS50B Scandinavian Airlines System 1 2026-04-14
SAS4610 - 1 2026-04-13
SAS4607 - 1 2026-04-13
SAS4491 - 1 2026-04-13

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS841 OSL → ZRH Apr 14, 09:10 UTCApr 14, 10:25 UTC1h 15m
2026-04-14 SAS841 OSL → ZRH Apr 14, 08:25 UTCApr 14, 09:05 UTC40m
2026-04-14 SAS847 ARN → OSL Apr 14, 06:20 UTCApr 14, 07:00 UTC40m
2026-04-14 SAS50B OSL → ARN Apr 14, 05:15 UTCApr 14, 05:20 UTC5m
2026-04-13 SAS4610 - Apr 13, 19:55 UTCApr 13, 20:10 UTC15m
2026-04-13 SAS4607 OSL → MAN Apr 13, 16:50 UTCApr 13, 18:40 UTC1h 50m
2026-04-13 SAS4491 - Apr 13, 14:00 UTCApr 13, 15:40 UTC1h 40m
2026-04-13 SAS4414 - Apr 13, 08:20 UTCApr 13, 09:20 UTC1h 0m
2026-04-13 SAS4414 - Apr 13, 08:05 UTCApr 13, 08:15 UTC10m

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

Mode-S 4ACB43 frequently asked

What is Mode-S code 4ACB43?
4ACB43 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RZC.
Where is Mode-S 4ACB43 registered?
Mode-S code 4ACB43 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACB43 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 4ACB43, octal 22545503, decimal 4,901,699.
What flights does 4ACB43 operate?
Mode-S 4ACB43 has broadcast 7 distinct callsigns, including SAS841, SAS4414, SAS847, SAS50B, SAS4610.