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sensors Mode-S transponder

4AB572

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-MKR · DIAMOND DA-42 Guardian

Hex
4AB572
Octal
22532562
Decimal
4,896,114
Country
SE
Tail
SE-MKR
Type
DA42
No current signal · last broadcast 18d ago
Flights observed
142
Distinct callsigns
1
Country
SE
Last broadcast
18d ago

Last known position

Most recent position reported by Mode-S 4AB572.

Country allocation

The ICAO 24-bit address 4AB572 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
SEMKR - 142 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-25 SEMKR - Jun 25, 11:50 UTCJun 25, 14:09 UTC2h 20m
2026-06-25 SEMKR - Jun 25, 09:25 UTCJun 25, 10:59 UTC1h 35m
2026-06-25 SEMKR - Jun 25, 07:30 UTCJun 25, 07:54 UTC25m
2026-06-25 SEMKR - Jun 25, 06:25 UTCJun 25, 06:44 UTC20m
2026-06-24 SEMKR - Jun 24, 15:39 UTCJun 24, 16:05 UTC25m
2026-06-24 SEMKR - Jun 24, 14:24 UTCJun 24, 14:39 UTC15m
2026-06-24 SEMKR - Jun 24, 12:34 UTCJun 24, 12:54 UTC20m
2026-06-24 SEMKR - Jun 24, 11:14 UTCJun 24, 11:29 UTC15m
2026-06-24 SEMKR - Jun 24, 09:15 UTCJun 24, 09:45 UTC30m
2026-06-24 SEMKR - Jun 24, 08:20 UTCJun 24, 08:39 UTC20m
2026-06-23 SEMKR - Jun 23, 15:44 UTCJun 23, 16:05 UTC20m
2026-06-23 SEMKR - Jun 23, 14:29 UTCJun 23, 14:49 UTC20m
2026-06-23 SEMKR - Jun 23, 12:25 UTCJun 23, 13:50 UTC1h 25m
2026-06-23 SEMKR - Jun 23, 09:05 UTCJun 23, 10:39 UTC1h 35m
2026-06-22 SEMKR - Jun 22, 11:54 UTCJun 22, 13:35 UTC1h 40m
2026-06-22 SEMKR - Jun 22, 08:35 UTCJun 22, 09:19 UTC45m
2026-06-18 SEMKR - Jun 18, 16:05 UTCJun 18, 17:00 UTC55m
2026-06-18 SEMKR - Jun 18, 15:00 UTCJun 18, 15:25 UTC25m
2026-06-18 SEMKR - Jun 18, 12:00 UTCJun 18, 13:40 UTC1h 40m
2026-06-18 SEMKR - Jun 18, 09:35 UTCJun 18, 10:15 UTC40m
2026-06-18 SEMKR - Jun 18, 08:40 UTCJun 18, 09:00 UTC20m
2026-06-18 SEMKR - Jun 18, 07:05 UTCJun 18, 07:45 UTC40m
2026-06-18 SEMKR - Jun 18, 06:15 UTCJun 18, 06:35 UTC20m
2026-06-17 SEMKR - Jun 17, 13:50 UTCJun 17, 15:25 UTC1h 35m
2026-06-17 SEMKR - Jun 17, 12:45 UTCJun 17, 13:10 UTC25m
2026-06-17 SEMKR - Jun 17, 11:35 UTCJun 17, 11:45 UTC10m
2026-06-17 SEMKR - Jun 17, 10:00 UTCJun 17, 10:20 UTC20m
2026-06-17 SEMKR - Jun 17, 08:45 UTCJun 17, 09:00 UTC15m
2026-06-17 SEMKR - Jun 17, 07:40 UTCJun 17, 08:00 UTC20m
2026-06-17 SEMKR - Jun 17, 06:25 UTCJun 17, 06:35 UTC10m
2026-06-16 SEMKR - Jun 16, 10:30 UTCJun 16, 11:30 UTC1h 0m
2026-06-11 SEMKR - Jun 11, 15:25 UTCJun 11, 17:10 UTC1h 45m
2026-06-11 SEMKR - Jun 11, 13:15 UTCJun 11, 14:00 UTC45m
2026-06-11 SEMKR - Jun 11, 12:15 UTCJun 11, 12:40 UTC25m
2026-06-11 SEMKR - Jun 11, 10:35 UTCJun 11, 10:55 UTC20m
2026-06-11 SEMKR - Jun 11, 09:20 UTCJun 11, 09:30 UTC10m
2026-06-10 SEMKR - Jun 10, 13:05 UTCJun 10, 13:45 UTC40m
2026-06-10 SEMKR - Jun 10, 12:10 UTCJun 10, 12:20 UTC10m
2026-06-10 SEMKR - Jun 10, 10:10 UTCJun 10, 10:50 UTC40m
2026-06-10 SEMKR - Jun 10, 09:05 UTCJun 10, 09:20 UTC15m
2026-06-10 SEMKR - Jun 10, 06:20 UTCJun 10, 07:50 UTC1h 30m
2026-06-08 SEMKR - Jun 8, 10:15 UTCJun 8, 11:40 UTC1h 25m
2026-06-05 SEMKR - Jun 5, 12:40 UTCJun 5, 13:40 UTC1h 0m
2026-06-05 SEMKR - Jun 5, 10:25 UTCJun 5, 11:30 UTC1h 5m
2026-06-04 SEMKR - Jun 4, 12:10 UTCJun 4, 13:35 UTC1h 25m
2026-06-04 SEMKR - Jun 4, 09:05 UTCJun 4, 10:20 UTC1h 15m
2026-06-04 SEMKR - Jun 4, 07:15 UTCJun 4, 07:55 UTC40m
2026-06-04 SEMKR - Jun 4, 06:20 UTCJun 4, 06:40 UTC20m
2026-06-03 SEMKR - Jun 3, 12:40 UTCJun 3, 13:50 UTC1h 10m
2026-06-03 SEMKR - Jun 3, 09:25 UTCJun 3, 10:45 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-MKR page for operator, model, and routing details .

Mode-S 4AB572 frequently asked

What is Mode-S code 4AB572?
4AB572 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-MKR.
Where is Mode-S 4AB572 registered?
Mode-S code 4AB572 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AB572 broadcasting right now?
No active broadcast right now. Last signal was 18d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AB572, octal 22532562, decimal 4,896,114.
What flights does 4AB572 operate?
Mode-S 4AB572 has broadcast 1 distinct callsign, including SEMKR.