sensors Mode-S transponder

4ACAC6

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RVF · PILATUS PC-24

Hex
4ACAC6
Octal
22545306
Decimal
4,901,574
Country
SE
Tail
SE-RVF
Type
PC24
No current signal · last broadcast 2d ago
Flights observed
183
Distinct callsigns
20
Country
SE
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 4ACAC6.

Country allocation

The ICAO 24-bit address 4ACAC6 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 - 20 2026-07-12
SWE41B - 16 2026-07-11
SWE32A - 15 2026-07-12
SWE43B - 13 2026-07-11
SWE42B - 12 2026-07-11
SWE33A - 11 2026-07-10
SWE44B - 9 2026-07-06
SWE22V - 7 2026-04-29
SWE35A - 6 2026-07-02
SWE21V - 6 2026-04-29
SWE12U - 6 2026-04-22
SWE11U - 6 2026-04-22
SWE45B - 5 2026-07-04
SWE36A - 5 2026-07-10
SWE34A - 5 2026-07-12
SWE01W - 5 2026-04-30
SWE23V - 4 2026-04-29
SWE13U - 4 2026-04-22
SWE02W - 4 2026-04-30
SWE72B - 3 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 SWE72A - Jul 12, 13:35 UTCJul 12, 15:10 UTC1h 35m
2026-07-12 SWE34A - Jul 12, 11:20 UTCJul 12, 11:55 UTC35m
2026-07-12 SWE32A - Jul 12, 08:40 UTCJul 12, 10:30 UTC1h 50m
2026-07-12 SWE31A ARN → OSD Jul 12, 07:15 UTCJul 12, 08:01 UTC45m
2026-07-11 SWE43B - Jul 11, 19:00 UTCJul 11, 19:55 UTC55m
2026-07-11 SWE42B - Jul 11, 18:05 UTCJul 11, 18:25 UTC20m
2026-07-11 SWE41B - Jul 11, 15:30 UTCJul 11, 16:35 UTC1h 5m
2026-07-10 SWE37A - Jul 10, 16:25 UTCJul 10, 16:55 UTC30m
2026-07-10 SWE36A - Jul 10, 15:15 UTCJul 10, 15:35 UTC20m
2026-07-10 SWE33A - Jul 10, 13:45 UTCJul 10, 14:35 UTC50m
2026-07-10 SWE31A - Jul 10, 11:20 UTCJul 10, 12:40 UTC1h 20m
2026-07-09 SWE72B LTN → ARN Jul 9, 15:10 UTCJul 9, 17:30 UTC2h 20m
2026-07-09 SWE71B ARN → LTN Jul 9, 10:40 UTCJul 9, 12:50 UTC2h 10m
2026-07-08 SWE72A - Jul 8, 13:45 UTCJul 8, 14:25 UTC40m
2026-07-08 SWE71A - Jul 8, 12:05 UTCJul 8, 13:05 UTC1h 0m
2026-07-08 SWE32A - Jul 8, 09:30 UTCJul 8, 10:00 UTC30m
2026-07-08 SWE31A - Jul 8, 08:20 UTCJul 8, 08:55 UTC35m
2026-07-06 SWE44B GOT → ARN Jul 6, 18:25 UTCJul 6, 19:15 UTC50m
2026-07-06 SWE43B - Jul 6, 17:30 UTCJul 6, 17:55 UTC25m
2026-07-06 SWE72B - Jul 6, 14:40 UTCJul 6, 16:35 UTC1h 55m
2026-07-06 SWE71B GOT → LNZ Jul 6, 12:15 UTCJul 6, 13:50 UTC1h 35m
2026-07-06 SWE41B - Jul 6, 11:00 UTCJul 6, 11:40 UTC40m
2026-07-04 SWE44B - Jul 4, 19:05 UTCJul 4, 20:20 UTC1h 15m
2026-07-04 SWE45B - Jul 4, 17:20 UTCJul 4, 18:35 UTC1h 15m
2026-07-04 SWE43B - Jul 4, 16:35 UTCJul 4, 16:45 UTC10m
2026-07-04 SWE42B - Jul 4, 15:50 UTCJul 4, 16:00 UTC10m
2026-07-04 SWE41B - Jul 4, 14:30 UTCJul 4, 15:10 UTC40m
2026-07-02 SWE35A - Jul 2, 13:15 UTCJul 2, 14:05 UTC50m
2026-07-02 SWE31A - Jul 2, 09:55 UTCJul 2, 10:40 UTC45m
2026-06-29 SWE44B - Jun 29, 18:19 UTCJun 29, 18:49 UTC30m
2026-06-29 SWE72B - Jun 29, 16:29 UTCJun 29, 17:14 UTC45m
2026-06-29 SWE71B - Jun 29, 15:00 UTCJun 29, 15:34 UTC35m
2026-06-29 SWE41B - Jun 29, 13:30 UTCJun 29, 14:19 UTC50m
2026-06-28 SWE45B - Jun 28, 19:04 UTCJun 28, 19:34 UTC30m
2026-06-28 SWE44B - Jun 28, 17:34 UTCJun 28, 18:00 UTC25m
2026-06-28 SWE43B - Jun 28, 16:14 UTCJun 28, 16:45 UTC30m
2026-06-28 SWE42B - Jun 28, 14:14 UTCJun 28, 14:50 UTC35m
2026-06-28 SWE41B - Jun 28, 12:39 UTCJun 28, 13:34 UTC55m
2026-06-26 SWE45B - Jun 26, 19:20 UTCJun 26, 19:45 UTC25m
2026-06-26 SWE44B - Jun 26, 18:15 UTCJun 26, 18:44 UTC30m
2026-06-26 SWE43B - Jun 26, 15:49 UTCJun 26, 16:20 UTC30m
2026-06-26 SWE41B - Jun 26, 13:10 UTCJun 26, 15:10 UTC2h 0m
2026-06-25 SWE32A - Jun 25, 13:50 UTCJun 25, 14:20 UTC30m
2026-06-25 SWE31A - Jun 25, 12:15 UTCJun 25, 12:40 UTC25m
2026-06-24 SWE44B - Jun 24, 17:55 UTCJun 24, 18:25 UTC30m
2026-06-24 SWE43B - Jun 24, 16:50 UTCJun 24, 17:25 UTC35m
2026-06-24 SWE42B - Jun 24, 15:24 UTCJun 24, 16:05 UTC40m
2026-06-24 SWE41B - Jun 24, 14:20 UTCJun 24, 14:50 UTC30m
2026-06-23 SWE37A NRK → ARN Jun 23, 16:05 UTCJun 23, 16:35 UTC30m
2026-06-23 SWE36A - Jun 23, 14:49 UTCJun 23, 15:30 UTC40m

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

Mode-S 4ACAC6 frequently asked

What is Mode-S code 4ACAC6?
4ACAC6 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RVF.
Where is Mode-S 4ACAC6 registered?
Mode-S code 4ACAC6 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAC6 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACAC6, octal 22545306, decimal 4,901,574.
What flights does 4ACAC6 operate?
Mode-S 4ACAC6 has broadcast 20 distinct callsigns, including SWE31A, SWE41B, SWE32A, SWE43B, SWE42B.