sensors Mode-S transponder

4ACB59

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACB59
Octal
22545531
Decimal
4,901,721
Country
SE
Tail
SE-RZY
Type
A20N
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
535
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 4ACB59.

Country allocation

The ICAO 24-bit address 4ACB59 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 20 distinct

Callsign Airline Flights Last seen
SAS4787 - 10 2026-07-07
SAS4788 - 9 2026-07-07
SAS809 - 6 2026-07-22
SAS73B - 6 2026-06-21
SAS69L Scandinavian Airlines System 6 2026-07-23
SAS58G Scandinavian Airlines System 6 2026-06-09
SAS332 Scandinavian Airlines System 6 2026-06-09
SAS242F - 6 2026-07-15
SAS22E - 6 2026-07-17
SAS11M - 6 2026-07-17
SAS842 - 5 2026-07-04
SAS841 - 5 2026-07-04
SAS810 - 5 2026-06-30
SAS32T Scandinavian Airlines System 5 2026-07-05
SAS27E Scandinavian Airlines System 5 2026-07-24
SAS236 Scandinavian Airlines System 5 2026-06-05
SAS78T Scandinavian Airlines System 4 2026-06-02
SAS60A - 4 2026-06-24
SAS50J Scandinavian Airlines System 4 2026-06-16
SAS4717 Scandinavian Airlines System 4 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS4117 BOO → OSL Jul 26, 20:25 UTCJul 26, 21:35 UTC1h 10m
2026-07-26 SAS96D OSL → BOO Jul 26, 18:25 UTCJul 26, 19:30 UTC1h 5m
2026-07-26 SAS4097 EVE → OSL Jul 26, 16:05 UTCJul 26, 17:20 UTC1h 15m
2026-07-26 SAS4096 OSL → EVE Jul 26, 13:40 UTCJul 26, 14:45 UTC1h 5m
2026-07-26 SAS4646 PMO → OSL Jul 26, 09:25 UTCJul 26, 12:35 UTC3h 10m
2026-07-26 SAS4645 OSL → PMO Jul 26, 04:15 UTCJul 26, 07:30 UTC3h 16m
2026-07-25 SAS43H BOO → OSL Jul 25, 18:30 UTCJul 25, 19:40 UTC1h 10m
2026-07-25 SAS7314 CHQ → BOO Jul 25, 12:40 UTCJul 25, 17:20 UTC4h 40m
2026-07-25 SAS7355 TOS → CHQ Jul 25, 06:50 UTCJul 25, 11:10 UTC4h 20m
2026-07-24 SAS27E OSL → TOS Jul 24, 17:45 UTCJul 24, 19:00 UTC1h 15m
2026-07-24 SAS57T - Jul 24, 11:40 UTCJul 24, 15:50 UTC4h 10m
2026-07-24 SAS40T - Jul 24, 06:35 UTCJul 24, 09:50 UTC3h 15m
2026-07-24 SAS72H HAU → OSL Jul 24, 04:20 UTCJul 24, 04:55 UTC35m
2026-07-23 SAS320 OSL → HAU Jul 23, 20:35 UTCJul 23, 21:05 UTC30m
2026-07-23 SAS4698 LPA → OSL Jul 23, 14:10 UTCJul 23, 19:00 UTC4h 50m
2026-07-23 SAS4697 OSL → LPA Jul 23, 07:15 UTCJul 23, 12:10 UTC4h 55m
2026-07-23 SAS69L TOS → OSL Jul 23, 04:10 UTCJul 23, 05:30 UTC1h 20m
2026-07-22 SAS4438 OSL → TOS Jul 22, 20:05 UTCJul 22, 21:30 UTC1h 25m
2026-07-22 SAS86Y LHR → OSL Jul 22, 17:00 UTCJul 22, 18:45 UTC1h 45m
2026-07-22 SAS809 OSL → LHR Jul 22, 13:15 UTCJul 22, 15:15 UTC2h 0m
2026-07-22 SAS4105 BOO → OSL Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-21 SAS4126 OSL → BOO Jul 21, 20:30 UTCJul 21, 21:40 UTC1h 10m
2026-07-21 SAS7334 CHQ → OSL Jul 21, 14:40 UTCJul 21, 18:25 UTC3h 45m
2026-07-21 SAS95Q OSL → CHQ Jul 21, 09:30 UTCJul 21, 13:00 UTC3h 30m
2026-07-20 SAS4680 - Jul 20, 19:40 UTCJul 20, 23:20 UTC3h 40m
2026-07-20 SAS4679 - Jul 20, 14:20 UTCJul 20, 18:00 UTC3h 40m
2026-07-20 SAS4490 OSL → LYR Jul 20, 06:50 UTCJul 20, 13:00 UTC6h 10m
2026-07-19 SAS4634 - Jul 19, 16:10 UTCJul 19, 19:45 UTC3h 35m
2026-07-19 SAS4633 - Jul 19, 11:00 UTCJul 19, 14:40 UTC3h 40m
2026-07-19 SAS4744 BRU → OSL Jul 19, 08:10 UTCJul 19, 09:45 UTC1h 35m
2026-07-19 SAS66A - Jul 19, 05:30 UTCJul 19, 07:00 UTC1h 30m
2026-07-18 SAS1474 CPH → OSL Jul 18, 21:35 UTCJul 18, 22:25 UTC50m
2026-07-18 SAS1475 - Jul 18, 19:20 UTCJul 18, 20:10 UTC50m
2026-07-18 SAS365 TRD → OSL Jul 18, 15:35 UTCJul 18, 16:15 UTC40m
2026-07-18 SAS62D LPA → TRD Jul 18, 10:35 UTCJul 18, 14:25 UTC3h 50m
2026-07-18 SAS7401 OSL → SMI Jul 18, 05:40 UTCJul 18, 09:15 UTC3h 35m
2026-07-17 SAS4734 - Jul 17, 19:20 UTCJul 17, 21:39 UTC2h 20m
2026-07-17 SAS4733 - Jul 17, 15:40 UTCJul 17, 18:00 UTC2h 20m
2026-07-17 SAS11M - Jul 17, 09:04 UTCJul 17, 12:19 UTC3h 15m
2026-07-17 SAS22E OSL → ALC Jul 17, 04:14 UTCJul 17, 07:44 UTC3h 30m
2026-07-16 SAS1476 CPH → OSL Jul 16, 20:15 UTCJul 16, 21:10 UTC55m
2026-07-16 SAS2674 - Jul 16, 12:20 UTCJul 16, 14:25 UTC2h 5m
2026-07-16 SAS2673 - Jul 16, 08:50 UTCJul 16, 10:40 UTC1h 50m
2026-07-15 SAS242F OSL → CPH Jul 15, 13:25 UTCJul 15, 14:15 UTC50m
2026-07-15 SAS1456 - Jul 15, 11:30 UTCJul 15, 12:25 UTC55m
2026-07-15 SAS1467 OSL → CPH Jul 15, 09:20 UTCJul 15, 10:10 UTC50m
2026-07-15 SAS83D CPH → OSL Jul 15, 07:10 UTCJul 15, 08:00 UTC50m
2026-07-15 SAS1463 - Jul 15, 05:10 UTCJul 15, 06:00 UTC50m
2026-07-14 SAS37A ALC → OSL Jul 14, 18:35 UTCJul 14, 21:55 UTC3h 20m
2026-07-14 SAS76F OSL → ALC Jul 14, 14:00 UTCJul 14, 17:25 UTC3h 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-RZY page for operator, model, and routing details .

Mode-S 4ACB59 frequently asked

What is Mode-S code 4ACB59?
4ACB59 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RZY.
Where is Mode-S 4ACB59 registered?
Mode-S code 4ACB59 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACB59 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACB59, octal 22545531, decimal 4,901,721.
What flights does 4ACB59 operate?
Mode-S 4ACB59 has broadcast 20 distinct callsigns, including SAS4787, SAS4788, SAS809, SAS73B, SAS69L.