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sensors Mode-S transponder

4AB56B

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-MKK · ATR-72-600

Hex
4AB56B
Octal
22532553
Decimal
4,896,107
Country
SE
Tail
SE-MKK
Type
AT76
No current signal · last broadcast 2h ago
Flights observed
413
Distinct callsigns
20
Country
SE
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4AB56B.

Country allocation

The ICAO 24-bit address 4AB56B 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
SAS083 - 12 2026-07-13
SAS196 - 10 2026-07-13
SAS195 - 10 2026-07-13
SAS084 - 10 2026-07-13
SAS086 - 9 2026-07-09
SAS85P - 8 2026-07-12
SAS45H - 8 2026-07-09
SAS4225 - 8 2026-07-13
SAS4224 - 8 2026-07-13
SAS2720 Scandinavian Airlines System 8 2026-06-16
SAS096 - 8 2026-07-12
SAS094 - 8 2026-07-09
SAS093 - 8 2026-07-09
SAS077 - 8 2026-07-09
SAS81C - 7 2026-07-05
SAS705 - 7 2026-07-04
SAS702 - 7 2026-07-04
SAS69N - 7 2026-07-05
SAS4231 - 7 2026-06-17
SAS2727 - 7 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SAS029 - Jul 14, 19:20 UTCJul 14, 20:05 UTC45m
2026-07-14 SAS028 - Jul 14, 17:25 UTCJul 14, 18:15 UTC50m
2026-07-14 SAS035 - Jul 14, 15:40 UTCJul 14, 16:40 UTC1h 0m
2026-07-14 SAS034 - Jul 14, 13:00 UTCJul 14, 14:00 UTC1h 0m
2026-07-14 SAS2182 - Jul 14, 07:55 UTCJul 14, 09:10 UTC1h 15m
2026-07-14 SAS181 ARN → AGH Jul 14, 06:15 UTCJul 14, 07:20 UTC1h 5m
2026-07-13 SAS084 - Jul 13, 18:50 UTCJul 13, 19:25 UTC35m
2026-07-13 SAS083 - Jul 13, 17:35 UTCJul 13, 18:00 UTC25m
2026-07-13 SAS4225 - Jul 13, 15:25 UTCJul 13, 16:15 UTC50m
2026-07-13 SAS4224 - Jul 13, 13:35 UTCJul 13, 14:30 UTC55m
2026-07-13 SAS196 - Jul 13, 11:40 UTCJul 13, 12:30 UTC50m
2026-07-13 SAS195 - Jul 13, 10:10 UTCJul 13, 10:55 UTC45m
2026-07-13 SAS1136 - Jul 13, 07:50 UTCJul 13, 08:50 UTC1h 0m
2026-07-13 SAS33E - Jul 13, 06:15 UTCJul 13, 07:05 UTC50m
2026-07-12 SAS096 - Jul 12, 19:10 UTCJul 12, 19:35 UTC25m
2026-07-12 SAS85P - Jul 12, 17:50 UTCJul 12, 18:25 UTC35m
2026-07-12 SAS1025 - Jul 12, 15:25 UTCJul 12, 16:45 UTC1h 20m
2026-07-12 SAS1024 - Jul 12, 13:20 UTCJul 12, 14:35 UTC1h 15m
2026-07-12 SAS196 - Jul 12, 11:15 UTCJul 12, 12:05 UTC50m
2026-07-12 SAS195 - Jul 12, 09:35 UTCJul 12, 10:20 UTC45m
2026-07-12 SAS2472 TRD → ARN Jul 12, 07:10 UTCJul 12, 08:35 UTC1h 25m
2026-07-12 SAS2471 ARN → TRD Jul 12, 05:05 UTCJul 12, 06:25 UTC1h 20m
2026-07-11 SAS082 - Jul 11, 16:55 UTCJul 11, 17:25 UTC30m
2026-07-11 SAS83R - Jul 11, 15:40 UTCJul 11, 16:10 UTC30m
2026-07-11 SAS071 - Jul 11, 11:10 UTCJul 11, 12:15 UTC1h 5m
2026-07-11 SAS070 ARN → OSD Jul 11, 09:15 UTCJul 11, 10:20 UTC1h 5m
2026-07-11 SAS4223 - Jul 11, 07:20 UTCJul 11, 08:15 UTC55m
2026-07-11 SAS4222 - Jul 11, 05:25 UTCJul 11, 06:20 UTC55m
2026-07-10 SAS196 - Jul 10, 12:05 UTCJul 10, 13:00 UTC55m
2026-07-10 SAS195 - Jul 10, 10:25 UTCJul 10, 11:10 UTC45m
2026-07-10 SAS2182 - Jul 10, 08:00 UTCJul 10, 09:15 UTC1h 15m
2026-07-10 SAS181 ARN → AGH Jul 10, 06:15 UTCJul 10, 07:15 UTC1h 0m
2026-07-09 SAS029 - Jul 9, 18:55 UTCJul 9, 19:55 UTC1h 0m
2026-07-09 SAS028 - Jul 9, 17:00 UTCJul 9, 18:00 UTC1h 0m
2026-07-09 SAS1130 - Jul 9, 14:50 UTCJul 9, 15:50 UTC1h 0m
2026-07-09 SAS1135 - Jul 9, 13:10 UTCJul 9, 14:05 UTC55m
2026-07-09 SAS094 - Jul 9, 11:35 UTCJul 9, 12:10 UTC35m
2026-07-09 SAS093 - Jul 9, 10:10 UTCJul 9, 10:40 UTC30m
2026-07-09 SAS45H - Jul 9, 07:20 UTCJul 9, 07:55 UTC35m
2026-07-09 SAS077 - Jul 9, 06:10 UTCJul 9, 06:40 UTC30m
2026-07-09 SAS086 - Jul 9, 04:35 UTCJul 9, 05:10 UTC35m
2026-07-08 SAS085 - Jul 8, 18:50 UTCJul 8, 19:20 UTC30m
2026-07-08 SAS725 HEL → ARN Jul 8, 16:45 UTCJul 8, 17:45 UTC1h 0m
2026-07-08 SAS722 ARN → HEL Jul 8, 15:10 UTCJul 8, 16:10 UTC1h 0m
2026-07-08 SAS094 - Jul 8, 11:35 UTCJul 8, 12:05 UTC30m
2026-07-08 SAS093 - Jul 8, 10:15 UTCJul 8, 10:45 UTC30m
2026-07-08 SAS45H - Jul 8, 07:30 UTCJul 8, 08:00 UTC30m
2026-07-08 SAS077 - Jul 8, 06:10 UTCJul 8, 06:40 UTC30m
2026-07-08 SAS086 - Jul 8, 04:35 UTCJul 8, 05:05 UTC30m
2026-07-07 SAS085 - Jul 7, 18:50 UTCJul 7, 19:25 UTC35m

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

Mode-S 4AB56B frequently asked

What is Mode-S code 4AB56B?
4AB56B is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-MKK.
Where is Mode-S 4AB56B registered?
Mode-S code 4AB56B is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AB56B broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AB56B, octal 22532553, decimal 4,896,107.
What flights does 4AB56B operate?
Mode-S 4AB56B has broadcast 20 distinct callsigns, including SAS083, SAS196, SAS195, SAS084, SAS086.