sensors Mode-S transponder

4AC9F8

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4AC9F8
Octal
22544770
Decimal
4,901,368
Country
SE
Tail
SE-ROX
Type
A20N
No current signal · last broadcast 12h ago
Flights observed
249
Distinct callsigns
20
Country
SE
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4AC9F8.

Country allocation

The ICAO 24-bit address 4AC9F8 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAS554 AMS → CPH May 29, 19:30 UTCMay 29, 20:25 UTC55m
2026-05-29 SAS49M CPH → AMS May 29, 17:10 UTCMay 29, 18:15 UTC1h 5m
2026-05-29 SAS604 ZRH → CPH May 29, 13:45 UTCMay 29, 15:20 UTC1h 35m
2026-05-29 SAS603 CPH → ZRH May 29, 11:10 UTCMay 29, 12:35 UTC1h 25m
2026-05-29 SAS2865 BGO → CPH May 29, 08:25 UTCMay 29, 09:25 UTC1h 0m
2026-05-29 SAS2862 CPH → BGO May 29, 06:25 UTCMay 29, 07:30 UTC1h 5m
2026-05-29 SAS2861 BGO → CPH May 29, 04:10 UTCMay 29, 05:10 UTC1h 0m
2026-05-28 SAS2874 CPH → BGO May 28, 20:55 UTCMay 28, 22:05 UTC1h 10m
2026-05-28 SAS554 AMS → CPH May 28, 18:45 UTCMay 28, 19:40 UTC55m
2026-05-28 SAS49M CPH → AMS May 28, 16:30 UTCMay 28, 17:30 UTC1h 0m
2026-05-28 SAS676 FRA → CPH May 28, 13:40 UTCMay 28, 14:45 UTC1h 5m
2026-05-28 SAS51H CPH → FRA May 28, 11:20 UTCMay 28, 12:25 UTC1h 5m
2026-05-28 SAS780 CPH → BUD May 28, 08:30 UTCMay 28, 10:10 UTC1h 40m
2026-05-28 SAS779 BUD → CPH May 28, 06:10 UTCMay 28, 07:30 UTC1h 20m
2026-05-27 SAS676 FRA → CPH May 27, 13:45 UTCMay 27, 14:50 UTC1h 5m
2026-05-27 SAS51H CPH → FRA May 27, 11:20 UTCMay 27, 12:35 UTC1h 15m
2026-05-27 SAS89T ZRH → CPH May 27, 08:45 UTCMay 27, 10:10 UTC1h 25m
2026-05-27 SAS601 CPH → ZRH May 27, 06:09 UTCMay 27, 07:35 UTC1h 25m
2026-05-26 SAS554 AMS → CPH May 26, 18:40 UTCMay 26, 19:34 UTC55m
2026-05-26 SAS49M CPH → AMS May 26, 16:24 UTCMay 26, 17:30 UTC1h 5m
2026-05-26 SAS2522 SVQ → CPH May 26, 11:30 UTCMay 26, 14:40 UTC3h 10m
2026-05-26 SAS2521 CPH → SVQ May 26, 07:05 UTCMay 26, 10:25 UTC3h 20m
2026-05-25 SAS2782 BOD → CPH May 25, 17:25 UTCMay 25, 19:30 UTC2h 4m
2026-05-25 SAS2781 CPH → BOD May 25, 14:15 UTCMay 25, 16:20 UTC2h 5m
2026-05-25 SAS34Y TOS → CPH May 25, 10:20 UTCMay 25, 12:20 UTC2h 0m
2026-05-25 SAS182Y CPH → TOS May 25, 06:55 UTCMay 25, 09:00 UTC2h 5m
2026-05-24 SAS413 ARN → CPH May 24, 20:05 UTCMay 24, 20:55 UTC50m
2026-05-24 SAS412 CPH → ARN May 24, 18:10 UTCMay 24, 19:10 UTC1h 0m
2026-05-24 SAS461 OSL → CPH May 24, 16:10 UTCMay 24, 17:00 UTC50m
2026-05-24 SAS464 OSL → CPH May 24, 14:30 UTCMay 24, 15:20 UTC50m
2026-05-24 SAS782 SKG → CPH May 24, 10:25 UTCMay 24, 13:10 UTC2h 45m
2026-05-24 SAS781 CPH → SKG May 24, 06:55 UTCMay 24, 09:20 UTC2h 25m
2026-05-23 SAS2992 RHO → CPH May 23, 19:20 UTCMay 23, 22:45 UTC3h 25m
2026-05-23 SAS2991 CPH → RHO May 23, 14:55 UTCMay 23, 18:00 UTC3h 5m
2026-05-23 SAS71G KEF → CPH May 23, 10:50 UTCMay 23, 13:25 UTC2h 35m
2026-05-23 SAS2595 KEF → CPH May 23, 06:40 UTCMay 23, 09:40 UTC3h 0m
2026-05-23 SAS832 SVG → CDG May 23, 02:20 UTCMay 23, 04:55 UTC2h 34m
2026-05-22 SAS831 CDG → SVG May 22, 21:25 UTCMay 23, 00:05 UTC2h 40m
2026-05-22 SAS4304 MAD → CPH May 22, 16:45 UTCMay 22, 19:25 UTC2h 40m
2026-05-22 SAS4303 CPH → MAD May 22, 12:20 UTCMay 22, 15:15 UTC2h 55m
2026-05-22 SAS45F CDG → CPH May 22, 09:45 UTCMay 22, 11:20 UTC1h 34m
2026-05-22 SAS21D CPH → CDG May 22, 06:45 UTCMay 22, 08:30 UTC1h 45m
2026-05-21 SAS2514 EDI → CPH May 21, 18:45 UTCMay 21, 20:15 UTC1h 30m
2026-05-21 SAS2513 CPH → EDI May 21, 16:05 UTCMay 21, 17:50 UTC1h 45m
2026-05-21 SAS62A BRU → CPH May 21, 13:35 UTCMay 21, 14:50 UTC1h 15m
2026-05-21 SAS1593 CPH → BRU May 21, 11:15 UTCMay 21, 12:25 UTC1h 10m
2026-05-21 SAS85J PRG → CPH May 21, 08:35 UTCMay 21, 09:45 UTC1h 10m
2026-05-21 SAS767 CPH → PRG May 21, 06:30 UTCMay 21, 07:30 UTC1h 0m
2026-05-20 SAS413 ARN → CPH May 20, 20:10 UTCMay 20, 21:00 UTC50m
2026-05-20 SAS412 CPH → ARN May 20, 18:10 UTCMay 20, 19:05 UTC55m

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

Mode-S 4AC9F8 frequently asked

What is Mode-S code 4AC9F8?
4AC9F8 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-ROX.
Where is Mode-S 4AC9F8 registered?
Mode-S code 4AC9F8 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AC9F8 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 4AC9F8, octal 22544770, decimal 4,901,368.
What flights does 4AC9F8 operate?
Mode-S 4AC9F8 has broadcast 20 distinct callsigns, including SAS832, SAS554, SAS49M, SAS71G, SAS2595.