sensors Mode-S transponder

4ACAC3

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RVC · PILATUS PC-24

Hex
4ACAC3
Octal
22545303
Decimal
4,901,571
Country
SE
Tail
SE-RVC
Type
PC24
Broadcasting now · callsign SWE23V · 17,150 ft
Flights observed
137
Distinct callsigns
20
Country
SE
Last broadcast
7h ago

Current position

4ACAC3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACAC3 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
SWE31A - 22 2026-07-09
SWE32A - 15 2026-07-09
SWE33A - 12 2026-07-07
SWE34A - 10 2026-07-09
SWE35A - 8 2026-05-21
SWE41B - 6 2026-07-03
SWE72A - 5 2026-07-09
SWE22V - 5 2026-07-13
SWE11U - 5 2026-07-10
SWE71A - 4 2026-07-09
SWE43B - 4 2026-07-03
SWE42B - 4 2026-07-01
SWE21V - 4 2026-07-13
SWE12U - 4 2026-07-10
SWE73A - 2 2026-06-26
SWE44B - 2 2026-07-01
SWE36A - 2 2026-06-28
SWE23V - 2 2026-07-13
SWE13U - 2 2026-07-10
SWE04W - 2 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SWE04W - Jul 13, 23:50 UTCJul 14, 00:15 UTC25m
2026-07-13 SWE03W - Jul 13, 20:35 UTCJul 13, 21:00 UTC25m
2026-07-13 SWE23V - Jul 13, 13:25 UTCJul 13, 13:40 UTC15m
2026-07-13 SWE22V - Jul 13, 11:00 UTCJul 13, 11:50 UTC50m
2026-07-13 SWE21V - Jul 13, 08:30 UTCJul 13, 09:25 UTC55m
2026-07-13 SWE02W - Jul 13, 02:10 UTCJul 13, 02:30 UTC20m
2026-07-13 SWE01W - Jul 13, 00:20 UTCJul 13, 00:40 UTC20m
2026-07-10 SWE13U - Jul 10, 13:15 UTCJul 10, 14:00 UTC45m
2026-07-10 SWE12U - Jul 10, 09:40 UTCJul 10, 10:55 UTC1h 15m
2026-07-10 SWE11U - Jul 10, 07:10 UTCJul 10, 07:30 UTC20m
2026-07-09 SWE21V - Jul 9, 17:30 UTCJul 9, 18:15 UTC45m
2026-07-09 SWE34A - Jul 9, 13:40 UTCJul 9, 14:25 UTC45m
2026-07-09 SWE72A - Jul 9, 11:20 UTCJul 9, 12:00 UTC40m
2026-07-09 SWE71A - Jul 9, 09:55 UTCJul 9, 10:45 UTC50m
2026-07-09 SWE32A - Jul 9, 08:50 UTCJul 9, 09:15 UTC25m
2026-07-09 SWE31A - Jul 9, 07:40 UTCJul 9, 08:05 UTC25m
2026-07-07 SWE33A - Jul 7, 16:15 UTCJul 7, 16:45 UTC30m
2026-07-07 SWE32A - Jul 7, 14:30 UTCJul 7, 15:20 UTC50m
2026-07-07 SWE31A - Jul 7, 13:00 UTCJul 7, 13:35 UTC35m
2026-07-03 SWE45B - Jul 3, 17:45 UTCJul 3, 18:15 UTC30m
2026-07-03 SWE43B - Jul 3, 15:20 UTCJul 3, 17:10 UTC1h 50m
2026-07-03 SWE41B - Jul 3, 13:25 UTCJul 3, 14:00 UTC35m
2026-07-02 SWE43B - Jul 2, 15:00 UTCJul 2, 16:15 UTC1h 15m
2026-07-02 SWE41B - Jul 2, 13:10 UTCJul 2, 13:35 UTC25m
2026-07-01 SWE44B - Jul 1, 17:00 UTCJul 1, 17:45 UTC45m
2026-07-01 SWE43B - Jul 1, 16:05 UTCJul 1, 16:40 UTC35m
2026-07-01 SWE42B - Jul 1, 14:25 UTCJul 1, 15:25 UTC1h 0m
2026-07-01 SWE41B - Jul 1, 12:50 UTCJul 1, 13:35 UTC45m
2026-06-28 SWE38A - Jun 28, 17:19 UTCJun 28, 18:00 UTC40m
2026-06-28 SWE37A - Jun 28, 16:00 UTCJun 28, 16:45 UTC45m
2026-06-28 SWE36A - Jun 28, 14:14 UTCJun 28, 14:59 UTC45m
2026-06-28 SWE32A - Jun 28, 10:55 UTCJun 28, 12:19 UTC1h 25m
2026-06-28 SWE31A - Jun 28, 09:25 UTCJun 28, 10:10 UTC45m
2026-06-27 SWE34A ARN → ARN Jun 27, 15:10 UTCJun 27, 16:30 UTC1h 20m
2026-06-26 SWE73A RKV → ARN Jun 26, 16:35 UTCJun 26, 19:24 UTC2h 50m
2026-06-26 SWE72A - Jun 26, 14:25 UTCJun 26, 14:44 UTC20m
2026-06-26 SWE72A - Jun 26, 12:10 UTCJun 26, 13:10 UTC1h 0m
2026-06-26 SWE71A ARN → BGO Jun 26, 09:50 UTCJun 26, 11:14 UTC1h 25m
2026-06-25 SWE42B OSD → ARN Jun 25, 15:34 UTCJun 25, 16:24 UTC50m
2026-06-25 SWE41B ARN → OSD Jun 25, 14:14 UTCJun 25, 15:10 UTC55m
2026-06-24 SWE33A - Jun 24, 12:40 UTCJun 24, 15:14 UTC2h 35m
2026-06-24 SWE73A - Jun 24, 11:20 UTCJun 24, 12:09 UTC50m
2026-06-24 SWE71A - Jun 24, 09:00 UTCJun 24, 10:10 UTC1h 10m
2026-06-24 SWE31A - Jun 24, 07:40 UTCJun 24, 08:14 UTC35m
2026-06-23 SWE44B - Jun 23, 19:29 UTCJun 23, 20:40 UTC1h 10m
2026-06-23 SWE43B - Jun 23, 17:25 UTCJun 23, 18:39 UTC1h 15m
2026-06-23 SWE42B BMA → ARN Jun 23, 13:50 UTCJun 23, 15:09 UTC1h 20m
2026-05-21 SWE35A - May 21, 14:20 UTCMay 21, 15:00 UTC40m
2026-05-21 SWE34A - May 21, 13:05 UTCMay 21, 13:30 UTC25m
2026-05-21 SWE33A - May 21, 11:40 UTCMay 21, 12:30 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-RVC page for operator, model, and routing details .

Mode-S 4ACAC3 frequently asked

What is Mode-S code 4ACAC3?
4ACAC3 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RVC.
Where is Mode-S 4ACAC3 registered?
Mode-S code 4ACAC3 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAC3 broadcasting right now?
Yes. Mode-S 4ACAC3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACAC3, octal 22545303, decimal 4,901,571.
What flights does 4ACAC3 operate?
Mode-S 4ACAC3 has broadcast 20 distinct callsigns, including SWE31A, SWE32A, SWE33A, SWE34A, SWE35A.