Apparatus

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sensors Mode-S transponder

4AC9D0

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RNP · CESSNA 525B Citation CJ3

Hex
4AC9D0
Octal
22544720
Decimal
4,901,328
Country
SE
Tail
SE-RNP
Type
C25B
No current signal · last broadcast 1d ago
Flights observed
98
Distinct callsigns
20
Country
SE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4AC9D0.

Country allocation

The ICAO 24-bit address 4AC9D0 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
SERNP - 6 2026-04-19
EUW9829 - 6 2026-06-28
EUW5064 - 5 2026-07-12
EUW5063 - 5 2026-06-30
EUW5046 - 5 2026-06-27
EUW5028 - 5 2026-05-31
EUW2330 - 5 2026-05-05
EUW9953 - 4 2026-05-16
EUW9938 - 4 2026-05-04
EUW9916 - 3 2026-05-07
EUW9049 - 3 2026-07-13
EUW9021 - 3 2026-07-01
EUW5466 - 3 2026-06-08
EUW5020 - 3 2026-05-26
EUW9967 - 2 2026-05-25
EUW9962 - 2 2026-06-07
EUW9956 - 2 2026-05-14
EUW9939 - 2 2026-06-03
EUW9920 - 2 2026-05-10
EUW9905 - 2 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 EUW0989 - Jul 16, 21:45 UTCJul 17, 00:55 UTC3h 10m
2026-07-16 EUW0989 NCE → VLC Jul 16, 10:40 UTCJul 16, 13:10 UTC2h 30m
2026-07-13 EUW9049 - Jul 13, 20:00 UTCJul 13, 20:40 UTC40m
2026-07-13 EUW9049 - Jul 13, 16:05 UTCJul 13, 19:20 UTC3h 15m
2026-07-13 EUW9049 - Jul 13, 14:15 UTCJul 13, 15:00 UTC45m
2026-07-12 EUW5064 - Jul 12, 08:10 UTCJul 12, 10:01 UTC1h 50m
2026-07-11 EUW5064 GVA → LBG Jul 11, 15:45 UTCJul 11, 16:35 UTC50m
2026-07-11 EUW5064 - Jul 11, 13:10 UTCJul 11, 13:55 UTC45m
2026-07-11 EUW5064 - Jul 11, 10:10 UTCJul 11, 11:55 UTC1h 45m
2026-07-11 EUW5064 - Jul 11, 08:30 UTCJul 11, 09:05 UTC35m
2026-07-01 EUW9021 - Jul 1, 20:15 UTCJul 1, 22:25 UTC2h 10m
2026-07-01 EUW9021 - Jul 1, 12:05 UTCJul 1, 12:50 UTC45m
2026-07-01 EUW9021 - Jul 1, 10:15 UTCJul 1, 10:50 UTC35m
2026-06-30 EUW5063 - Jun 30, 06:00 UTCJun 30, 07:30 UTC1h 30m
2026-06-29 EUW5063 HAM → STR Jun 29, 14:09 UTCJun 29, 15:14 UTC1h 5m
2026-06-29 EUW5063 GWT → HAM Jun 29, 11:29 UTCJun 29, 12:09 UTC40m
2026-06-29 EUW5063 - Jun 29, 09:34 UTCJun 29, 10:50 UTC1h 15m
2026-06-29 EUW5063 - Jun 29, 06:24 UTCJun 29, 08:14 UTC1h 50m
2026-06-28 EUW9829 - Jun 28, 14:19 UTCJun 28, 14:45 UTC25m
2026-06-28 EUW9829 - Jun 28, 10:50 UTCJun 28, 13:10 UTC2h 20m
2026-06-28 EUW9829 - Jun 28, 05:29 UTCJun 28, 08:19 UTC2h 50m
2026-06-27 EUW5046 - Jun 27, 12:50 UTCJun 27, 14:14 UTC1h 25m
2026-06-27 EUW5046 - Jun 27, 09:50 UTCJun 27, 11:59 UTC2h 10m
2026-06-27 EUW5046 MUC → NCE Jun 27, 07:39 UTCJun 27, 08:55 UTC1h 15m
2026-06-27 EUW5046 PRG → MUC Jun 27, 05:35 UTCJun 27, 06:09 UTC35m
2026-06-26 EUW5046 GOT → PRG Jun 26, 13:10 UTCJun 26, 14:29 UTC1h 20m
2026-06-26 EUW9005 - Jun 26, 07:55 UTCJun 26, 08:40 UTC45m
2026-06-25 EUW9005 - Jun 25, 13:05 UTCJun 25, 13:50 UTC45m
2026-06-19 EUW9030 - Jun 19, 00:55 UTCJun 19, 02:09 UTC1h 15m
2026-06-18 EUW9030 - Jun 18, 18:25 UTCJun 18, 19:30 UTC1h 5m
2026-06-17 EUW9829 - Jun 17, 10:35 UTCJun 17, 13:15 UTC2h 40m
2026-06-17 EUW9829 - Jun 17, 06:50 UTCJun 17, 09:10 UTC2h 20m
2026-06-17 EUW9829 - Jun 17, 05:20 UTCJun 17, 05:40 UTC20m
2026-06-16 EUW2347 - Jun 16, 08:35 UTCJun 16, 09:15 UTC40m
2026-06-16 EUW2347 - Jun 16, 07:20 UTCJun 16, 07:45 UTC25m
2026-06-12 EUW9014 - Jun 12, 17:25 UTCJun 12, 19:00 UTC1h 35m
2026-06-12 EUW9014 - Jun 12, 10:50 UTCJun 12, 12:15 UTC1h 25m
2026-06-10 EUW2345 - Jun 10, 09:20 UTCJun 10, 10:05 UTC45m
2026-06-10 EUW2345 - Jun 10, 08:10 UTCJun 10, 08:50 UTC40m
2026-06-08 EUW5466 - Jun 8, 11:45 UTCJun 8, 12:35 UTC50m
2026-06-08 EUW5466 - Jun 8, 08:15 UTCJun 8, 09:45 UTC1h 30m
2026-06-08 EUW5466 - Jun 8, 05:10 UTCJun 8, 07:15 UTC2h 5m
2026-06-07 EUW9962 - Jun 7, 15:40 UTCJun 7, 17:40 UTC2h 0m
2026-06-06 EUW9962 GOT → LME Jun 6, 10:20 UTCJun 6, 12:40 UTC2h 20m
2026-06-04 EUW4061 - Jun 4, 13:30 UTCJun 4, 14:15 UTC45m
2026-06-04 EUW4061 - Jun 4, 04:25 UTCJun 4, 05:05 UTC40m
2026-06-03 EUW9939 - Jun 3, 11:20 UTCJun 3, 12:05 UTC45m
2026-06-03 EUW9939 - Jun 3, 09:00 UTCJun 3, 09:45 UTC45m
2026-05-31 EUW5028 - May 31, 19:20 UTCMay 31, 20:30 UTC1h 10m
2026-05-31 EUW5028 - May 31, 15:15 UTCMay 31, 17:30 UTC2h 15m

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

Mode-S 4AC9D0 frequently asked

What is Mode-S code 4AC9D0?
4AC9D0 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RNP.
Where is Mode-S 4AC9D0 registered?
Mode-S code 4AC9D0 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AC9D0 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AC9D0, octal 22544720, decimal 4,901,328.
What flights does 4AC9D0 operate?
Mode-S 4AC9D0 has broadcast 20 distinct callsigns, including SERNP, EUW9829, EUW5064, EUW5063, EUW5046.