Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4AC9F9

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4AC9F9
Octal
22544771
Decimal
4,901,369
Country
SE
Tail
SE-ROY
Type
A20N
No current signal · last broadcast 6h ago
Flights observed
428
Distinct callsigns
20
Country
SE
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 4AC9F9.

Country allocation

The ICAO 24-bit address 4AC9F9 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
SAS91K - 6 2026-07-09
SAS4774 - 6 2026-07-06
SAS4773 - 6 2026-07-06
SAS4095 - 6 2026-06-23
SAS4094 - 6 2026-06-23
SAS89C - 5 2026-06-19
SAS341 - 5 2026-06-24
SAS93L - 4 2026-07-05
SAS87F - 4 2026-07-09
SAS839 - 4 2026-07-05
SAS812 - 4 2026-06-19
SAS811 Scandinavian Airlines System 4 2026-06-19
SAS69L Scandinavian Airlines System 4 2026-06-12
SAS64P - 4 2026-06-19
SAS53D - 4 2026-06-16
SAS4637 Scandinavian Airlines System 4 2026-04-28
SAS4122 - 4 2026-06-17
SAS39A - 4 2026-06-17
SAS38R - 4 2026-07-01
SAS380 - 4 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SAS40G ARN → CPH Jul 13, 19:05 UTCJul 13, 20:00 UTC55m
2026-07-13 SAS1430 CPH → ARN Jul 13, 17:20 UTCJul 13, 18:10 UTC50m
2026-07-13 SAS1407 ARN → CPH Jul 13, 13:10 UTCJul 13, 14:10 UTC1h 0m
2026-07-13 SAS61A CPH → ARN Jul 13, 11:15 UTCJul 13, 12:10 UTC55m
2026-07-13 SAS62L - Jul 13, 08:50 UTCJul 13, 09:50 UTC1h 0m
2026-07-13 SAS2551 CPH → AMS Jul 13, 06:25 UTCJul 13, 07:30 UTC1h 5m
2026-07-12 SAS1475 OSL → CPH Jul 12, 19:05 UTCJul 12, 20:01 UTC55m
2026-07-12 SAS4545 - Jul 12, 16:25 UTCJul 12, 18:01 UTC1h 35m
2026-07-12 SAS4546 - Jul 12, 13:50 UTCJul 12, 15:20 UTC1h 30m
2026-07-12 SAS4706 NCE → OSL Jul 12, 09:15 UTCJul 12, 11:40 UTC2h 25m
2026-07-12 SAS4705 - Jul 12, 05:20 UTCJul 12, 08:05 UTC2h 45m
2026-07-11 SAS7368 - Jul 11, 19:30 UTCJul 11, 23:20 UTC3h 50m
2026-07-11 SAS7367 OSL → CHQ Jul 11, 14:20 UTCJul 11, 18:00 UTC3h 40m
2026-07-11 SAS7328 - Jul 11, 09:50 UTCJul 11, 12:20 UTC2h 30m
2026-07-11 SAS7327 - Jul 11, 05:50 UTCJul 11, 07:55 UTC2h 5m
2026-07-10 SAS4493 OSL → OSL Jul 10, 14:20 UTCJul 10, 20:25 UTC6h 5m
2026-07-10 SAS15U - Jul 10, 04:30 UTCJul 10, 12:25 UTC7h 55m
2026-07-09 SAS4478 - Jul 9, 16:20 UTCJul 9, 20:45 UTC4h 25m
2026-07-09 SAS91K CPH → OSL Jul 9, 13:40 UTCJul 9, 14:35 UTC55m
2026-07-09 SAS87F OSL → CPH Jul 9, 11:55 UTCJul 9, 12:40 UTC45m
2026-07-09 SAS50G - Jul 9, 10:00 UTCJul 9, 10:55 UTC55m
2026-07-09 SAS43C OSL → CPH Jul 9, 08:00 UTCJul 9, 08:55 UTC55m
2026-07-09 SAS4008 - Jul 9, 05:25 UTCJul 9, 06:00 UTC35m
2026-07-08 SAS85T - Jul 8, 19:40 UTCJul 8, 22:40 UTC3h 0m
2026-07-08 SAS4657 - Jul 8, 15:30 UTCJul 8, 18:30 UTC3h 0m
2026-07-08 SAS7462 MJT → OSL Jul 8, 10:00 UTCJul 8, 14:20 UTC4h 20m
2026-07-08 SAS7461 OSL → MJT Jul 8, 04:35 UTCJul 8, 08:10 UTC3h 35m
2026-07-07 SAS7526 ALC → SVG Jul 7, 14:45 UTCJul 7, 18:00 UTC3h 15m
2026-07-07 SAS7525 - Jul 7, 08:45 UTCJul 7, 11:45 UTC3h 0m
2026-07-07 SAS7525 - Jul 7, 06:45 UTCJul 7, 07:25 UTC40m
2026-07-06 SAS1474 CPH → OSL Jul 6, 21:20 UTCJul 6, 22:20 UTC1h 0m
2026-07-06 SAS1475 - Jul 6, 19:10 UTCJul 6, 20:00 UTC50m
2026-07-06 SAS1470 - Jul 6, 17:20 UTCJul 6, 18:15 UTC55m
2026-07-06 SAS1465 OSL → CPH Jul 6, 15:35 UTCJul 6, 16:20 UTC45m
2026-07-06 SAS4774 - Jul 6, 09:35 UTCJul 6, 14:00 UTC4h 25m
2026-07-06 SAS4773 - Jul 6, 04:55 UTCJul 6, 08:40 UTC3h 45m
2026-07-05 SAS93L - Jul 5, 18:55 UTCJul 5, 20:55 UTC2h 0m
2026-07-05 SAS839 OSL → CDG Jul 5, 15:35 UTCJul 5, 17:25 UTC1h 50m
2026-07-05 SAS4493 OSL → OSL Jul 5, 08:05 UTCJul 5, 14:20 UTC6h 15m
2026-07-05 SAS4012 - Jul 5, 06:10 UTCJul 5, 06:50 UTC40m
2026-07-04 SAS61W - Jul 4, 19:55 UTCJul 4, 23:50 UTC3h 55m
2026-07-04 SAS7309 - Jul 4, 15:00 UTCJul 4, 18:15 UTC3h 15m
2026-07-04 SAS7310 - Jul 4, 09:30 UTCJul 4, 13:15 UTC3h 45m
2026-07-04 SAS7303 - Jul 4, 04:10 UTCJul 4, 07:25 UTC3h 15m
2026-07-03 SAS4047 OSL → SVG Jul 3, 18:30 UTCJul 3, 19:20 UTC50m
2026-07-03 SAS7376 - Jul 3, 09:35 UTCJul 3, 13:15 UTC3h 40m
2026-07-03 SAS7375 OSL → KGS Jul 3, 04:25 UTCJul 3, 08:05 UTC3h 40m
2026-07-02 SAS4692 - Jul 2, 10:05 UTCJul 2, 13:15 UTC3h 10m
2026-07-02 SAS98W - Jul 2, 05:05 UTCJul 2, 08:10 UTC3h 5m
2026-07-01 SAS46B - Jul 1, 09:25 UTCJul 1, 13:15 UTC3h 50m

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

Mode-S 4AC9F9 frequently asked

What is Mode-S code 4AC9F9?
4AC9F9 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-ROY.
Where is Mode-S 4AC9F9 registered?
Mode-S code 4AC9F9 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AC9F9 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AC9F9, octal 22544771, decimal 4,901,369.
What flights does 4AC9F9 operate?
Mode-S 4AC9F9 has broadcast 20 distinct callsigns, including SAS91K, SAS4774, SAS4773, SAS4095, SAS4094.