sensors Mode-S transponder

4ACAC5

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RVE · PILATUS PC-24

Hex
4ACAC5
Octal
22545305
Decimal
4,901,573
Country
SE
Tail
SE-RVE
Type
PC24
No current signal · last broadcast 10h ago
Flights observed
118
Distinct callsigns
20
Country
SE
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4ACAC5.

Country allocation

The ICAO 24-bit address 4ACAC5 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
SWE13U - 9 2026-05-29
SWE31A - 8 2026-04-24
SWE22V - 8 2026-05-25
SWE12U - 8 2026-05-29
SWE11U - 8 2026-05-29
SWE21V - 7 2026-05-25
SWE14U - 6 2026-05-29
SWE33A - 5 2026-04-24
SWE23V - 5 2026-05-22
SWE43B - 4 2026-04-23
SWE42B - 4 2026-04-23
SWE41B - 4 2026-04-23
SWE34A - 4 2026-04-20
SWE24V - 4 2026-05-25
SWE71B - 3 2026-04-22
SWE71A - 3 2026-04-21
SWE32A - 3 2026-04-24
SWE15U - 3 2026-05-26
SWE72B - 2 2026-04-22
SWE72A - 2 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SWE14U - May 29, 15:05 UTCMay 29, 15:25 UTC20m
2026-05-29 SWE13U - May 29, 13:20 UTCMay 29, 14:30 UTC1h 10m
2026-05-29 SWE12U - May 29, 11:35 UTCMay 29, 12:05 UTC30m
2026-05-29 SWE11U - May 29, 08:25 UTCMay 29, 09:25 UTC1h 0m
2026-05-28 SWE13U - May 28, 15:10 UTCMay 28, 16:15 UTC1h 5m
2026-05-28 SWE12U - May 28, 14:15 UTCMay 28, 14:35 UTC20m
2026-05-28 SWE11U - May 28, 13:15 UTCMay 28, 13:35 UTC20m
2026-05-27 SWE13U - May 27, 13:00 UTCMay 27, 14:55 UTC1h 55m
2026-05-27 SWE12U - May 27, 09:40 UTCMay 27, 10:50 UTC1h 10m
2026-05-27 SWE11U - May 27, 08:05 UTCMay 27, 08:30 UTC25m
2026-05-26 SWE15U - May 26, 14:00 UTCMay 26, 14:20 UTC20m
2026-05-26 SWE14U - May 26, 13:04 UTCMay 26, 13:24 UTC20m
2026-05-26 SWE13U - May 26, 12:05 UTCMay 26, 12:30 UTC25m
2026-05-26 SWE11U - May 26, 11:05 UTCMay 26, 11:24 UTC20m
2026-05-25 SWE25V - May 25, 19:35 UTCMay 25, 20:15 UTC40m
2026-05-25 SWE24V - May 25, 17:40 UTCMay 25, 18:50 UTC1h 10m
2026-05-25 SWE22V - May 25, 14:55 UTCMay 25, 15:15 UTC20m
2026-05-25 SWE21V - May 25, 12:45 UTCMay 25, 13:20 UTC35m
2026-05-25 SWE13U - May 25, 09:50 UTCMay 25, 10:35 UTC45m
2026-05-25 SWE12U - May 25, 08:10 UTCMay 25, 09:20 UTC1h 10m
2026-05-25 SWE11U - May 25, 06:55 UTCMay 25, 07:15 UTC20m
2026-05-23 SWE12U - May 23, 12:10 UTCMay 23, 12:25 UTC15m
2026-05-23 SWE11U - May 23, 11:10 UTCMay 23, 11:30 UTC20m
2026-05-22 SWE24V - May 22, 16:50 UTCMay 22, 17:35 UTC45m
2026-05-22 SWE23V - May 22, 15:30 UTCMay 22, 16:10 UTC40m
2026-05-22 SWE22V - May 22, 09:55 UTCMay 22, 10:25 UTC30m
2026-05-22 SWE21V - May 22, 08:10 UTCMay 22, 08:40 UTC30m
2026-05-20 SWE22V - May 20, 10:55 UTCMay 20, 11:15 UTC20m
2026-05-20 SWE21V - May 20, 08:35 UTCMay 20, 08:55 UTC20m
2026-05-16 SWE15U - May 16, 15:45 UTCMay 16, 16:20 UTC35m
2026-05-16 SWE14U - May 16, 12:21 UTCMay 16, 13:25 UTC1h 5m
2026-05-15 SWE13U - May 15, 10:50 UTCMay 15, 11:25 UTC35m
2026-05-15 SWE12U - May 15, 09:10 UTCMay 15, 09:20 UTC10m
2026-05-15 SWE11U - May 15, 06:45 UTCMay 15, 07:05 UTC20m
2026-05-14 SWE04W - May 14, 19:40 UTCMay 14, 20:05 UTC25m
2026-05-14 SWE03W - May 14, 18:45 UTCMay 14, 19:00 UTC15m
2026-05-14 SWE02W - May 14, 03:10 UTCMay 14, 03:30 UTC20m
2026-05-14 SWE01W - May 14, 00:55 UTCMay 14, 01:15 UTC20m
2026-05-12 SWE23V - May 12, 15:50 UTCMay 12, 16:10 UTC20m
2026-05-12 SWE22V - May 12, 12:00 UTCMay 12, 13:30 UTC1h 30m
2026-05-12 SWE21V - May 12, 08:15 UTCMay 12, 09:35 UTC1h 20m
2026-05-12 SWE02W - May 12, 04:35 UTCMay 12, 05:15 UTC40m
2026-05-11 SWE14U - May 11, 13:05 UTCMay 11, 13:25 UTC20m
2026-05-11 SWE13U - May 11, 11:45 UTCMay 11, 12:00 UTC15m
2026-05-10 SWE12U - May 10, 10:45 UTCMay 10, 11:05 UTC20m
2026-05-10 SWE11U - May 10, 08:30 UTCMay 10, 08:50 UTC20m
2026-05-08 SWE24V - May 8, 14:50 UTCMay 8, 15:10 UTC20m
2026-05-08 SWE23V - May 8, 12:34 UTCMay 8, 12:55 UTC20m
2026-05-08 SWE22V - May 8, 09:54 UTCMay 8, 10:14 UTC20m
2026-05-08 SWE21V - May 8, 08:55 UTCMay 8, 09:19 UTC25m

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

Mode-S 4ACAC5 frequently asked

What is Mode-S code 4ACAC5?
4ACAC5 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RVE.
Where is Mode-S 4ACAC5 registered?
Mode-S code 4ACAC5 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAC5 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACAC5, octal 22545305, decimal 4,901,573.
What flights does 4ACAC5 operate?
Mode-S 4ACAC5 has broadcast 20 distinct callsigns, including SWE13U, SWE31A, SWE22V, SWE12U, SWE11U.