Apparatus

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sensors Mode-S transponder

4AC9F3

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4AC9F3
Octal
22544763
Decimal
4,901,363
Country
SE
Tail
SE-ROS
Type
A20N
No current signal · last broadcast 7h ago
Flights observed
278
Distinct callsigns
20
Country
SE
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 4AC9F3.

Country allocation

The ICAO 24-bit address 4AC9F3 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
SAS42E Scandinavian Airlines System 5 2026-05-20
SAS73T Scandinavian Airlines System 4 2026-05-21
SAS72C Scandinavian Airlines System 4 2026-05-15
SAS676 Scandinavian Airlines System 4 2026-05-29
SAS66G Scandinavian Airlines System 4 2026-05-22
SAS50P Scandinavian Airlines System 4 2026-05-21
SAS41K Scandinavian Airlines System 4 2026-05-20
SAS1553 Scandinavian Airlines System 4 2026-05-15
SAS1429 Scandinavian Airlines System 4 2026-05-20
SAS1017 Scandinavian Airlines System 4 2026-05-21
SAS792 Scandinavian Airlines System 3 2026-04-20
SAS791 Scandinavian Airlines System 3 2026-04-20
SAS780 Scandinavian Airlines System 3 2026-05-29
SAS779 Scandinavian Airlines System 3 2026-05-29
SAS57R Scandinavian Airlines System 3 2026-04-15
SAS54N Scandinavian Airlines System 3 2026-05-19
SAS51H Scandinavian Airlines System 3 2026-05-29
SAS46M Scandinavian Airlines System 3 2026-05-20
SAS2657 - 3 2026-04-15
SAS1430 Scandinavian Airlines System 3 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAS1204 AAL → CPH May 29, 17:05 UTCMay 29, 17:35 UTC30m
2026-05-29 SAS1203 CPH → AAL May 29, 15:55 UTCMay 29, 16:25 UTC30m
2026-05-29 SAS676 FRA → CPH May 29, 13:55 UTCMay 29, 15:10 UTC1h 15m
2026-05-29 SAS51H CPH → FRA May 29, 11:20 UTCMay 29, 12:25 UTC1h 5m
2026-05-29 SAS780 CPH → BUD May 29, 08:30 UTCMay 29, 10:10 UTC1h 40m
2026-05-29 SAS779 BUD → CPH May 29, 06:05 UTCMay 29, 07:30 UTC1h 25m
2026-05-28 SAS1879 SVG → CPH May 28, 17:25 UTCMay 28, 18:15 UTC50m
2026-05-28 SAS1874 CPH → SVG May 28, 15:45 UTCMay 28, 16:40 UTC55m
2026-05-28 SAS1678 BER → CPH May 28, 12:50 UTCMay 28, 13:35 UTC45m
2026-05-28 SAS1677 CPH → BER May 28, 11:05 UTCMay 28, 11:45 UTC40m
2026-05-28 SAS85J PRG → CPH May 28, 08:40 UTCMay 28, 09:40 UTC1h 0m
2026-05-28 SAS767 CPH → PRG May 28, 06:40 UTCMay 28, 07:35 UTC55m
2026-05-26 SAS2776 CPH → LCA May 26, 18:55 UTCMay 26, 22:50 UTC3h 55m
2026-05-26 SAS2775 LCA → CPH May 26, 14:05 UTCMay 26, 17:35 UTC3h 30m
2026-05-26 SAS42K FCO → CPH May 26, 10:05 UTCMay 26, 12:20 UTC2h 15m
2026-05-26 SAS49L CPH → FCO May 26, 06:39 UTCMay 26, 08:45 UTC2h 5m
2026-05-25 SAS409 ARN → CPH May 25, 16:10 UTCMay 25, 17:00 UTC50m
2026-05-25 SAS89A CPH → ARN May 25, 14:15 UTCMay 25, 15:15 UTC1h 0m
2026-05-25 SAS42K FCO → CPH May 25, 09:55 UTCMay 25, 12:05 UTC2h 10m
2026-05-25 SAS49L CPH → FCO May 25, 06:40 UTCMay 25, 08:40 UTC2h 0m
2026-05-25 SAS1228 AAL → CPH May 25, 04:15 UTCMay 25, 04:45 UTC30m
2026-05-24 SAS1225 CPH → AAL May 24, 21:30 UTCMay 24, 21:45 UTC15m
2026-05-24 SAS88P DUB → CPH May 24, 18:30 UTCMay 24, 20:10 UTC1h 40m
2026-05-24 SAS85A CPH → DUB May 24, 15:45 UTCMay 24, 17:35 UTC1h 50m
2026-05-24 SAS1214 AAL → CPH May 24, 13:35 UTCMay 24, 14:00 UTC25m
2026-05-24 SAS1213 CPH → AAL May 24, 12:15 UTCMay 24, 12:45 UTC30m
2026-05-24 SAS10E VCE → CPH May 24, 09:20 UTCMay 24, 11:10 UTC1h 50m
2026-05-24 SAS31T CPH → VCE May 24, 06:10 UTCMay 24, 07:45 UTC1h 35m
2026-05-23 SAS2495 EVE → CPH May 23, 13:50 UTCMay 23, 15:40 UTC1h 50m
2026-05-23 SAS2494 CPH → EVE May 23, 10:50 UTCMay 23, 12:35 UTC1h 45m
2026-05-23 SAS2865 BGO → CPH May 23, 08:45 UTCMay 23, 09:55 UTC1h 10m
2026-05-23 SAS2862 CPH → BGO May 23, 06:30 UTCMay 23, 07:40 UTC1h 10m
2026-05-23 SAS73A OSL → CPH May 23, 04:10 UTCMay 23, 05:00 UTC50m
2026-05-22 SAS493 ARN → OSL May 22, 17:45 UTCMay 22, 18:25 UTC40m
2026-05-22 SAS488 OSL → ARN May 22, 16:10 UTCMay 22, 16:50 UTC40m
2026-05-22 SAS491 ARN → OSL May 22, 14:35 UTCMay 22, 15:20 UTC45m
2026-05-22 SAS67M FCO → ARN May 22, 10:35 UTCMay 22, 13:25 UTC2h 50m
2026-05-22 SAS23G FCO → ARN May 22, 06:25 UTCMay 22, 09:10 UTC2h 45m
2026-05-22 SAS66G SFT → ARN May 22, 04:05 UTCMay 22, 04:55 UTC50m
2026-05-21 SAS50P ARN → SFT May 21, 20:00 UTCMay 21, 20:55 UTC55m
2026-05-21 SAS2003 LLA → ARN May 21, 17:20 UTCMay 21, 18:20 UTC1h 0m
2026-05-21 SAS2002 ARN → LLA May 21, 15:30 UTCMay 21, 16:25 UTC55m
2026-05-21 SAS1017 SFT → ARN May 21, 13:40 UTCMay 21, 14:35 UTC55m
2026-05-21 SAS73T ARN → SFT May 21, 12:00 UTCMay 21, 12:50 UTC50m
2026-05-21 SAS88K CDG → ARN May 21, 08:55 UTCMay 21, 11:00 UTC2h 5m
2026-05-21 SAS85Y OSL → BCN May 21, 05:20 UTCMay 21, 07:35 UTC2h 15m
2026-05-20 SAS1430 CPH → ARN May 20, 17:05 UTCMay 20, 18:00 UTC55m
2026-05-20 SAS1429 ARN → CPH May 20, 15:10 UTCMay 20, 16:05 UTC55m
2026-05-20 SAS42E CPH → ARN May 20, 10:00 UTCMay 20, 11:00 UTC1h 0m
2026-05-20 SAS41K ARN → CPH May 20, 08:05 UTCMay 20, 08:55 UTC50m

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

Mode-S 4AC9F3 frequently asked

What is Mode-S code 4AC9F3?
4AC9F3 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-ROS.
Where is Mode-S 4AC9F3 registered?
Mode-S code 4AC9F3 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AC9F3 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AC9F3, octal 22544763, decimal 4,901,363.
What flights does 4AC9F3 operate?
Mode-S 4AC9F3 has broadcast 20 distinct callsigns, including SAS42E, SAS73T, SAS72C, SAS676, SAS66G.