sensors Mode-S transponder

4AB563

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4AB563
Octal
22532543
Decimal
4,896,099
Country
SE
Tail
SE-MKC
Type
AT76
No current signal · last broadcast 18h ago
Flights observed
18
Distinct callsigns
14
Country
SE
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4AB563.

Country allocation

The ICAO 24-bit address 4AB563 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 14 distinct

Callsign Airline Flights Last seen
SAS671 - 3 2026-04-13
SAS40R Scandinavian Airlines System 2 2026-04-13
SAS1280 - 2 2026-04-13
SAS672 - 1 2026-04-13
SAS670 - 1 2026-04-13
SAS669 - 1 2026-04-13
SAS1927 - 1 2026-04-12
SAS1926 - 1 2026-04-12
SAS1668 - 1 2026-04-13
SAS1282 Scandinavian Airlines System 1 2026-04-14
SAS1281 Scandinavian Airlines System 1 2026-04-14
SAS1260 Scandinavian Airlines System 1 2026-04-12
SAS1206 Scandinavian Airlines System 1 2026-04-14
SAS1205 Scandinavian Airlines System 1 2026-04-14

Recent flights last 18

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS1282 BLL → CPH Apr 14, 09:15 UTCApr 14, 09:50 UTC35m
2026-04-14 SAS1281 CPH → BLL Apr 14, 07:55 UTCApr 14, 08:30 UTC35m
2026-04-14 SAS1206 AAL → CPH Apr 14, 06:20 UTCApr 14, 07:00 UTC40m
2026-04-14 SAS1205 CPH → AAL Apr 14, 05:15 UTCApr 14, 05:30 UTC15m
2026-04-13 SAS1668 - Apr 13, 17:40 UTCApr 13, 18:35 UTC55m
2026-04-13 SAS40R CPH → HAJ Apr 13, 16:15 UTCApr 13, 17:00 UTC45m
2026-04-13 SAS40R CPH → HAJ Apr 13, 15:55 UTCApr 13, 16:15 UTC20m
2026-04-13 SAS672 - Apr 13, 14:10 UTCApr 13, 15:10 UTC1h 0m
2026-04-13 SAS671 - Apr 13, 12:20 UTCApr 13, 12:50 UTC30m
2026-04-13 SAS671 - Apr 13, 11:55 UTCApr 13, 12:50 UTC55m
2026-04-13 SAS671 - Apr 13, 11:40 UTCApr 13, 12:15 UTC35m
2026-04-13 SAS670 - Apr 13, 08:40 UTCApr 13, 09:35 UTC55m
2026-04-13 SAS669 - Apr 13, 06:35 UTCApr 13, 07:45 UTC1h 10m
2026-04-13 SAS1280 - Apr 13, 04:20 UTCApr 13, 04:30 UTC10m
2026-04-13 SAS1280 - Apr 13, 04:00 UTCApr 13, 04:15 UTC15m
2026-04-12 SAS1260 AAR → CPH Apr 12, 20:00 UTCApr 12, 20:15 UTC15m
2026-04-12 SAS1927 - Apr 12, 18:20 UTCApr 12, 19:25 UTC1h 5m
2026-04-12 SAS1926 - Apr 12, 17:15 UTCApr 12, 17:35 UTC20m

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

Mode-S 4AB563 frequently asked

What is Mode-S code 4AB563?
4AB563 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-MKC.
Where is Mode-S 4AB563 registered?
Mode-S code 4AB563 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AB563 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AB563, octal 22532543, decimal 4,896,099.
What flights does 4AB563 operate?
Mode-S 4AB563 has broadcast 14 distinct callsigns, including SAS671, SAS40R, SAS1280, SAS672, SAS670.