Apparatus

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sensors Mode-S transponder

4AAA4B

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-JRK · AGUSTA AW-139

Hex
4AAA4B
Octal
22525113
Decimal
4,893,259
Country
SE
Tail
SE-JRK
Type
A139
No current signal · last broadcast 3d ago
Flights observed
55
Distinct callsigns
1
Country
SE
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 4AAA4B.

Country allocation

The ICAO 24-bit address 4AAA4B 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 1 distinct

Callsign Airline Flights Last seen
HMF004 - 24 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 - - Jul 14, 16:50 UTCJul 14, 17:10 UTC20m
2026-07-13 - - Jul 13, 20:05 UTCJul 13, 20:35 UTC30m
2026-07-13 - - Jul 13, 09:50 UTCJul 13, 10:25 UTC35m
2026-07-12 - - Jul 12, 16:45 UTCJul 12, 17:01 UTC15m
2026-07-12 - - Jul 12, 10:25 UTCJul 12, 11:01 UTC35m
2026-07-12 - - Jul 12, 07:20 UTCJul 12, 07:31 UTC10m
2026-07-11 - - Jul 11, 19:00 UTCJul 11, 19:15 UTC15m
2026-07-11 - - Jul 11, 15:05 UTCJul 11, 15:45 UTC40m
2026-07-11 - - Jul 11, 11:40 UTCJul 11, 11:50 UTC10m
2026-07-11 - - Jul 11, 10:50 UTCJul 11, 11:00 UTC10m
2026-07-11 - - Jul 11, 00:45 UTCJul 11, 02:10 UTC1h 25m
2026-07-10 - - Jul 10, 14:55 UTCJul 10, 15:35 UTC40m
2026-07-09 - - Jul 9, 16:35 UTCJul 9, 18:40 UTC2h 5m
2026-07-09 - - Jul 9, 13:10 UTCJul 9, 13:40 UTC30m
2026-07-09 - - Jul 9, 08:50 UTCJul 9, 09:00 UTC10m
2026-07-09 - - Jul 9, 07:55 UTCJul 9, 08:15 UTC20m
2026-07-08 - GSE → GSE Jul 8, 15:45 UTCJul 8, 17:20 UTC1h 35m
2026-07-08 - - Jul 8, 10:15 UTCJul 8, 10:35 UTC20m
2026-07-08 - - Jul 8, 09:15 UTCJul 8, 09:30 UTC15m
2026-07-07 - - Jul 7, 13:20 UTCJul 7, 13:55 UTC35m
2026-07-06 - - Jul 6, 11:20 UTCJul 6, 11:30 UTC10m
2026-07-06 - - Jul 6, 10:30 UTCJul 6, 10:40 UTC10m
2026-07-05 - - Jul 5, 13:50 UTCJul 5, 14:00 UTC10m
2026-07-05 - - Jul 5, 10:35 UTCJul 5, 10:50 UTC15m
2026-07-04 - - Jul 4, 09:50 UTCJul 4, 10:00 UTC10m
2026-07-04 - - Jul 4, 08:10 UTCJul 4, 08:20 UTC10m
2026-07-03 - - Jul 3, 16:10 UTCJul 3, 16:25 UTC15m
2026-07-03 - - Jul 3, 13:55 UTCJul 3, 14:05 UTC10m
2026-07-03 - - Jul 3, 11:50 UTCJul 3, 13:00 UTC1h 10m
2026-07-01 HMF004 - Jul 1, 11:10 UTCJul 1, 11:40 UTC30m
2026-06-21 - GSE → GSE Jun 21, 08:15 UTCJun 21, 08:49 UTC35m
2026-06-20 - GSE → GSE Jun 20, 12:30 UTCJun 20, 12:39 UTC10m
2026-05-09 HMF004 - May 9, 09:15 UTCMay 9, 10:10 UTC55m
2026-05-08 HMF004 - May 8, 14:10 UTCMay 8, 14:30 UTC20m
2026-05-08 HMF004 - May 8, 11:34 UTCMay 8, 11:49 UTC15m
2026-05-07 HMF004 GSE → GSE May 7, 20:25 UTCMay 7, 21:10 UTC45m
2026-05-03 HMF004 GSE → GSE May 3, 09:40 UTCMay 3, 09:55 UTC15m
2026-05-01 HMF004 - May 1, 21:25 UTCMay 1, 22:10 UTC45m
2026-05-01 HMF004 - May 1, 18:50 UTCMay 1, 19:25 UTC35m
2026-04-30 HMF004 GSE → GSE Apr 30, 12:25 UTCApr 30, 13:40 UTC1h 15m
2026-04-29 HMF004 - Apr 29, 12:50 UTCApr 29, 14:45 UTC1h 55m
2026-04-28 HMF004 GSE → GSE Apr 28, 13:50 UTCApr 28, 15:15 UTC1h 25m
2026-04-27 HMF004 - Apr 27, 11:50 UTCApr 27, 13:25 UTC1h 35m
2026-04-26 HMF004 - Apr 26, 08:55 UTCApr 26, 10:35 UTC1h 40m
2026-04-25 HMF004 - Apr 25, 19:35 UTCApr 25, 20:10 UTC35m
2026-04-25 HMF004 - Apr 25, 11:40 UTCApr 25, 11:55 UTC15m
2026-04-25 HMF004 - Apr 25, 08:55 UTCApr 25, 09:45 UTC50m
2026-04-24 HMF004 - Apr 24, 10:55 UTCApr 24, 11:40 UTC45m
2026-04-24 HMF004 - Apr 24, 08:40 UTCApr 24, 09:40 UTC1h 0m
2026-04-22 HMF004 - Apr 22, 10:55 UTCApr 22, 11:40 UTC45m

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

Mode-S 4AAA4B frequently asked

What is Mode-S code 4AAA4B?
4AAA4B is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-JRK.
Where is Mode-S 4AAA4B registered?
Mode-S code 4AAA4B is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AAA4B broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AAA4B, octal 22525113, decimal 4,893,259.
What flights does 4AAA4B operate?
Mode-S 4AAA4B has broadcast 1 distinct callsign, including HMF004.