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sensors Mode-S transponder

4ACA6B

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RSK · EMBRAER ERJ-190-100

Hex
4ACA6B
Octal
22545153
Decimal
4,901,483
Country
SE
Tail
SE-RSK
Type
E190
Broadcasting now · callsign SAS43U · 25,950 ft
Flights observed
679
Distinct callsigns
20
Country
SE
Last broadcast
55m ago

Current position

4ACA6B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACA6B 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
SAS215 - 13 2026-07-09
SAS58A - 11 2026-06-23
SAS216 - 11 2026-07-09
SAS4174 Scandinavian Airlines System 9 2026-06-11
SAS4561 Scandinavian Airlines System 8 2026-06-12
SAS4552 Scandinavian Airlines System 8 2026-06-12
SAS320 - 7 2026-07-12
SAS15E - 7 2026-06-29
SAS4176 - 6 2026-06-15
SAS4170 - 6 2026-06-23
SAS252 - 6 2026-07-12
SAS24F - 6 2026-07-08
SAS1905 - 6 2026-06-19
SAS93P Scandinavian Airlines System 5 2026-06-11
SAS92R Scandinavian Airlines System 5 2026-06-12
SAS79F Scandinavian Airlines System 5 2026-06-04
SAS53G Scandinavian Airlines System 5 2026-06-12
SAS4616 - 5 2026-06-21
SAS4615 - 5 2026-06-21
SAS43T Scandinavian Airlines System 5 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SAS65L - Jul 14, 11:40 UTCJul 14, 12:10 UTC30m
2026-07-14 SAS64P - Jul 14, 08:45 UTCJul 14, 10:20 UTC1h 35m
2026-07-14 SAS89C - Jul 14, 06:15 UTCJul 14, 07:40 UTC1h 25m
2026-07-13 SAS93L - Jul 13, 19:15 UTCJul 13, 21:15 UTC2h 0m
2026-07-13 SAS839 - Jul 13, 15:30 UTCJul 13, 17:30 UTC2h 0m
2026-07-13 SAS2306 - Jul 13, 13:50 UTCJul 13, 14:20 UTC30m
2026-07-13 SAS2303 - Jul 13, 12:10 UTCJul 13, 12:35 UTC25m
2026-07-13 SAS355 TRD → OSL Jul 13, 10:30 UTCJul 13, 11:10 UTC40m
2026-07-13 SAS338 - Jul 13, 09:00 UTCJul 13, 09:40 UTC40m
2026-07-13 SAS1315 - Jul 13, 07:25 UTCJul 13, 08:05 UTC40m
2026-07-13 SAS1314 - Jul 13, 05:45 UTCJul 13, 06:20 UTC35m
2026-07-13 SAS72H - Jul 13, 04:00 UTCJul 13, 04:40 UTC40m
2026-07-12 SAS320 - Jul 12, 20:30 UTCJul 12, 21:00 UTC30m
2026-07-12 SAS80M - Jul 12, 18:01 UTCJul 12, 19:25 UTC1h 25m
2026-07-12 SAS827 - Jul 12, 15:01 UTCJul 12, 16:30 UTC1h 30m
2026-07-12 SAS30E DUB → OSL Jul 12, 11:35 UTCJul 12, 13:30 UTC1h 55m
2026-07-12 SAS60K - Jul 12, 08:25 UTCJul 12, 10:20 UTC1h 55m
2026-07-12 SAS252 BGO → OSL Jul 12, 06:35 UTCJul 12, 07:15 UTC40m
2026-07-11 SAS281 - Jul 11, 20:25 UTCJul 11, 21:05 UTC40m
2026-07-11 SAS48C BGO → OSL Jul 11, 17:45 UTCJul 11, 18:20 UTC35m
2026-07-11 SAS277 - Jul 11, 16:25 UTCJul 11, 17:00 UTC35m
2026-07-11 SAS2306 - Jul 11, 14:50 UTCJul 11, 15:25 UTC35m
2026-07-11 SAS2303 - Jul 11, 13:15 UTCJul 11, 13:45 UTC30m
2026-07-11 SAS56M - Jul 11, 11:50 UTCJul 11, 12:30 UTC40m
2026-07-11 SAS57E - Jul 11, 10:15 UTCJul 11, 10:55 UTC40m
2026-07-11 SAS1317 - Jul 11, 08:35 UTCJul 11, 09:15 UTC40m
2026-07-11 SAS1314 - Jul 11, 07:00 UTCJul 11, 07:30 UTC30m
2026-07-11 SAS341 TRD → OSL Jul 11, 04:30 UTCJul 11, 05:10 UTC40m
2026-07-10 SAS2884 CPH → TRD Jul 10, 21:30 UTCJul 10, 22:45 UTC1h 15m
2026-07-10 SAS1475 - Jul 10, 19:05 UTCJul 10, 19:55 UTC50m
2026-07-10 SAS1470 CPH → OSL Jul 10, 17:20 UTCJul 10, 18:15 UTC55m
2026-07-10 SAS1465 - Jul 10, 15:30 UTCJul 10, 16:25 UTC55m
2026-07-10 SAS4417 - Jul 10, 12:05 UTCJul 10, 13:45 UTC1h 40m
2026-07-10 SAS53F - Jul 10, 09:40 UTCJul 10, 11:05 UTC1h 25m
2026-07-10 SAS47Y - Jul 10, 07:50 UTCJul 10, 08:30 UTC40m
2026-07-10 SAS332 - Jul 10, 06:25 UTCJul 10, 07:05 UTC40m
2026-07-10 SAS1313 - Jul 10, 04:15 UTCJul 10, 04:50 UTC35m
2026-07-09 SAS1334 - Jul 9, 20:20 UTCJul 9, 20:45 UTC25m
2026-07-09 SAS39A - Jul 9, 17:55 UTCJul 9, 19:10 UTC1h 15m
2026-07-09 SAS4122 - Jul 9, 15:55 UTCJul 9, 17:10 UTC1h 15m
2026-07-09 SAS216 KRS → OSL Jul 9, 14:10 UTCJul 9, 14:45 UTC35m
2026-07-09 SAS215 OSL → KRS Jul 9, 12:50 UTCJul 9, 13:20 UTC30m
2026-07-09 SAS355 TRD → OSL Jul 9, 10:30 UTCJul 9, 11:10 UTC40m
2026-07-09 SPTUL - Jul 9, 09:55 UTCJul 9, 10:25 UTC30m
2026-07-09 SAS338 OSL → TRD Jul 9, 08:55 UTCJul 9, 09:40 UTC45m
2026-07-09 SAS1315 - Jul 9, 07:20 UTCJul 9, 07:55 UTC35m
2026-07-09 SAS1314 - Jul 9, 05:50 UTCJul 9, 06:20 UTC30m
2026-07-09 SAS238 - Jul 9, 03:55 UTCJul 9, 04:35 UTC40m
2026-07-08 SAS295 - Jul 8, 20:35 UTCJul 8, 21:10 UTC35m
2026-07-08 SAS80M - Jul 8, 18:05 UTCJul 8, 19:35 UTC1h 30m

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

Mode-S 4ACA6B frequently asked

What is Mode-S code 4ACA6B?
4ACA6B is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSK.
Where is Mode-S 4ACA6B registered?
Mode-S code 4ACA6B is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA6B broadcasting right now?
Yes. Mode-S 4ACA6B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA6B, octal 22545153, decimal 4,901,483.
What flights does 4ACA6B operate?
Mode-S 4ACA6B has broadcast 20 distinct callsigns, including SAS215, SAS58A, SAS216, SAS4174, SAS4561.