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sensors Mode-S transponder

4AB554

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-MJT · PILATUS PC-12

Hex
4AB554
Octal
22532524
Decimal
4,896,084
Country
SE
Tail
SE-MJT
Type
PC12
No current signal · last broadcast 1d ago
Flights observed
50
Distinct callsigns
1
Country
SE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4AB554.

Country allocation

The ICAO 24-bit address 4AB554 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
SEMJT - 50 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 SEMJT MXP → RTM Jul 16, 13:30 UTCJul 16, 15:25 UTC1h 55m
2026-07-16 SEMJT - Jul 16, 10:20 UTCJul 16, 12:00 UTC1h 40m
2026-07-16 SEMJT - Jul 16, 09:05 UTCJul 16, 09:25 UTC20m
2026-07-13 SEMJT - Jul 13, 18:30 UTCJul 13, 19:25 UTC55m
2026-07-13 SEMJT - Jul 13, 07:55 UTCJul 13, 08:50 UTC55m
2026-07-12 SEMJT CEQ → RTM Jul 12, 15:15 UTCJul 12, 17:30 UTC2h 15m
2026-07-11 SEMJT RTM → CEQ Jul 11, 08:10 UTCJul 11, 10:20 UTC2h 10m
2026-07-07 SEMJT - Jul 7, 10:15 UTCJul 7, 12:45 UTC2h 30m
2026-07-07 SEMJT RTM → LTT Jul 7, 07:40 UTCJul 7, 09:45 UTC2h 5m
2026-07-04 SEMJT - Jul 4, 10:55 UTCJul 4, 13:00 UTC2h 5m
2026-07-04 SEMJT - Jul 4, 08:35 UTCJul 4, 10:10 UTC1h 35m
2026-06-26 SEMJT TLS → RTM Jun 26, 14:09 UTCJun 26, 16:14 UTC2h 5m
2026-06-26 SEMJT RTM → TLS Jun 26, 08:05 UTCJun 26, 10:25 UTC2h 20m
2026-06-24 SEMJT - Jun 24, 13:10 UTCJun 24, 14:24 UTC1h 15m
2026-06-23 SEMJT - Jun 23, 13:50 UTCJun 23, 14:55 UTC1h 5m
2026-06-19 SEMJT - Jun 19, 08:59 UTCJun 19, 11:09 UTC2h 10m
2026-06-19 SEMJT - Jun 19, 05:49 UTCJun 19, 08:04 UTC2h 15m
2026-06-17 SEMJT - Jun 17, 15:50 UTCJun 17, 16:45 UTC55m
2026-06-17 SEMJT - Jun 17, 09:10 UTCJun 17, 10:20 UTC1h 10m
2026-06-08 SEMJT - Jun 8, 11:35 UTCJun 8, 11:45 UTC10m
2026-06-08 SEMJT - Jun 8, 08:30 UTCJun 8, 10:40 UTC2h 10m
2026-06-08 SEMJT - Jun 8, 05:20 UTCJun 8, 07:20 UTC2h 0m
2026-06-03 SEMJT - Jun 3, 15:10 UTCJun 3, 16:20 UTC1h 10m
2026-06-02 SEMJT - Jun 2, 06:30 UTCJun 2, 07:35 UTC1h 5m
2026-05-31 SEMJT - May 31, 08:25 UTCMay 31, 10:35 UTC2h 10m
2026-05-27 SEMJT ZRH → RTM May 27, 16:55 UTCMay 27, 18:25 UTC1h 30m
2026-05-26 SEMJT RTM → ZRH May 26, 14:30 UTCMay 26, 15:54 UTC1h 25m
2026-05-24 SEMJT - May 24, 10:45 UTCMay 24, 13:00 UTC2h 15m
2026-05-24 SEMJT - May 24, 07:50 UTCMay 24, 10:05 UTC2h 15m
2026-05-20 SEMJT - May 20, 13:35 UTCMay 20, 15:45 UTC2h 10m
2026-05-20 SEMJT RTM → IGS May 20, 07:05 UTCMay 20, 08:40 UTC1h 35m
2026-05-09 SEMJT - May 9, 12:10 UTCMay 9, 14:30 UTC2h 20m
2026-05-07 SEMJT - May 7, 15:30 UTCMay 7, 17:45 UTC2h 15m
2026-05-04 SEMJT - May 4, 09:30 UTCMay 4, 11:55 UTC2h 25m
2026-05-04 SEMJT RTM → CEQ May 4, 05:05 UTCMay 4, 08:10 UTC3h 5m
2026-04-30 SEMJT - Apr 30, 13:30 UTCApr 30, 14:35 UTC1h 5m
2026-04-30 SEMJT - Apr 30, 07:00 UTCApr 30, 08:20 UTC1h 20m
2026-04-25 SEMJT - Apr 25, 12:00 UTCApr 25, 14:20 UTC2h 20m
2026-04-25 SEMJT - Apr 25, 11:05 UTCApr 25, 11:30 UTC25m
2026-04-25 SEMJT - Apr 25, 08:15 UTCApr 25, 10:30 UTC2h 15m
2026-04-25 SEMJT RTM → LEY Apr 25, 07:10 UTCApr 25, 07:30 UTC20m
2026-04-18 SEMJT - Apr 18, 12:30 UTCApr 18, 14:20 UTC1h 50m
2026-04-18 SEMJT - Apr 18, 09:05 UTCApr 18, 10:40 UTC1h 35m
2026-04-16 SEMJT - Apr 16, 15:25 UTCApr 16, 16:15 UTC50m
2026-04-16 SEMJT RTM → CVT Apr 16, 07:15 UTCApr 16, 08:30 UTC1h 15m
2026-04-15 SEMJT - Apr 15, 19:05 UTCApr 15, 19:40 UTC35m
2026-04-15 SEMJT - Apr 15, 18:10 UTCApr 15, 19:00 UTC50m
2026-04-15 SEMJT - Apr 15, 14:30 UTCApr 15, 14:55 UTC24m
2026-04-15 SEMJT - Apr 15, 08:15 UTCApr 15, 08:35 UTC20m
2026-04-15 SEMJT RTM → AOC Apr 15, 05:30 UTCApr 15, 06:50 UTC1h 20m

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

Mode-S 4AB554 frequently asked

What is Mode-S code 4AB554?
4AB554 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-MJT.
Where is Mode-S 4AB554 registered?
Mode-S code 4AB554 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AB554 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 4AB554, octal 22532524, decimal 4,896,084.
What flights does 4AB554 operate?
Mode-S 4AB554 has broadcast 1 distinct callsign, including SEMJT.