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sensors Mode-S transponder

4ACA79

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RSY · EMBRAER ERJ-190-200

Hex
4ACA79
Octal
22545171
Decimal
4,901,497
Country
SE
Tail
SE-RSY
Type
E195
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
737
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S 4ACA79.

Country allocation

The ICAO 24-bit address 4ACA79 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
SAS216 - 11 2026-07-11
SAS215 - 11 2026-07-11
SAS58A Scandinavian Airlines System 9 2026-07-26
SAS4159 Scandinavian Airlines System 9 2026-07-17
SAS15E - 9 2026-07-02
SAS1313 Scandinavian Airlines System 9 2026-07-22
SAS4170 Scandinavian Airlines System 8 2026-07-26
SAS355 - 8 2026-06-20
SAS338 - 8 2026-06-20
SAS2306 Scandinavian Airlines System 8 2026-07-24
SAS2303 Scandinavian Airlines System 8 2026-07-24
SAS85G Scandinavian Airlines System 7 2026-06-15
SAS69J Scandinavian Airlines System 7 2026-06-15
SAS4172 Scandinavian Airlines System 7 2026-06-12
SAS4163 Scandinavian Airlines System 7 2026-06-12
SAS223 - 7 2026-07-01
SAS1330 Scandinavian Airlines System 7 2026-07-25
SAS4581 Scandinavian Airlines System 6 2026-05-24
SAS4572 Scandinavian Airlines System 6 2026-05-24
SAS4561 Scandinavian Airlines System 6 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS58A TRD → BGO Jul 26, 19:55 UTCJul 26, 20:15 UTC20m
2026-07-26 SAS58A TRD → BGO Jul 26, 18:25 UTCJul 26, 19:15 UTC50m
2026-07-26 SAS4170 SVG → BGO Jul 26, 16:50 UTCJul 26, 17:35 UTC45m
2026-07-26 SAS4170 SVG → BGO Jul 26, 15:45 UTCJul 26, 16:10 UTC25m
2026-07-26 SAS4616 ABZ → SVG Jul 26, 14:10 UTCJul 26, 14:55 UTC45m
2026-07-26 SAS4615 SVG → ABZ Jul 26, 12:20 UTCJul 26, 13:15 UTC55m
2026-07-26 SAS57E OSL → SVG Jul 26, 10:50 UTCJul 26, 11:30 UTC40m
2026-07-26 SAS849 ARN → OSL Jul 26, 09:05 UTCJul 26, 09:45 UTC40m
2026-07-26 SAS864 OSL → ARN Jul 26, 07:20 UTCJul 26, 08:00 UTC40m
2026-07-26 SAS1317 AES → OSL Jul 26, 05:10 UTCJul 26, 05:40 UTC30m
2026-07-25 SAS1330 OSL → AES Jul 25, 20:40 UTCJul 25, 21:10 UTC30m
2026-07-25 SAS4113 BOO → OSL Jul 25, 14:15 UTCJul 25, 15:25 UTC1h 10m
2026-07-25 SAS4112 OSL → BOO Jul 25, 12:15 UTCJul 25, 13:25 UTC1h 10m
2026-07-25 SAS830 CDG → OSL Jul 25, 09:30 UTCJul 25, 11:20 UTC1h 50m
2026-07-25 SAS835 OSL → CDG Jul 25, 06:00 UTCJul 25, 08:00 UTC2h 0m
2026-07-24 SAS93L CDG → OSL Jul 24, 18:50 UTCJul 24, 20:45 UTC1h 55m
2026-07-24 SAS839 OSL → CDG Jul 24, 15:20 UTCJul 24, 17:20 UTC2h 0m
2026-07-24 SAS2306 KSU → OSL Jul 24, 13:45 UTCJul 24, 14:20 UTC35m
2026-07-24 SAS2303 OSL → KSU Jul 24, 12:05 UTCJul 24, 12:35 UTC30m
2026-07-24 SAS834 CDG → OSL Jul 24, 09:00 UTCJul 24, 10:50 UTC1h 50m
2026-07-24 SAS97F OSL → CDG Jul 24, 05:15 UTCJul 24, 07:15 UTC2h 0m
2026-07-23 SAS83G TOS → OSL Jul 23, 17:25 UTCJul 23, 18:50 UTC1h 25m
2026-07-23 SAS50J OSL → TOS Jul 23, 14:50 UTCJul 23, 16:20 UTC1h 30m
2026-07-23 SAS824 AMS → OSL Jul 23, 12:15 UTCJul 23, 13:55 UTC1h 40m
2026-07-23 SAS823 OSL → AMS Jul 23, 09:45 UTCJul 23, 11:05 UTC1h 20m
2026-07-23 SAS260 BGO → OSL Jul 23, 07:25 UTCJul 23, 08:00 UTC35m
2026-07-23 SAS88E OSL → BGO Jul 23, 06:05 UTCJul 23, 06:40 UTC35m
2026-07-23 SAS4004 SVG → OSL Jul 23, 04:15 UTCJul 23, 04:55 UTC40m
2026-07-22 SAS4051 OSL → SVG Jul 22, 20:20 UTCJul 22, 20:55 UTC35m
2026-07-22 SAS80M AMS → OSL Jul 22, 17:30 UTCJul 22, 19:00 UTC1h 30m
2026-07-22 SAS827 OSL → AMS Jul 22, 14:55 UTCJul 22, 16:20 UTC1h 25m
2026-07-22 SAS43U - Jul 22, 13:20 UTCJul 22, 13:55 UTC35m
2026-07-22 SAS65L OSL → HAU Jul 22, 11:10 UTCJul 22, 12:25 UTC1h 15m
2026-07-22 SAS1313 AES → OSL Jul 22, 04:15 UTCJul 22, 04:50 UTC35m
2026-07-21 SAS1334 OSL → AES Jul 21, 20:55 UTCJul 21, 21:25 UTC30m
2026-07-21 SAS824 AMS → OSL Jul 21, 12:00 UTCJul 21, 13:35 UTC1h 35m
2026-07-21 SAS823 OSL → AMS Jul 21, 09:20 UTCJul 21, 10:45 UTC1h 25m
2026-07-21 SAS260 BGO → OSL Jul 21, 07:50 UTCJul 21, 08:25 UTC35m
2026-07-21 SAS88E OSL → BGO Jul 21, 06:10 UTCJul 21, 06:50 UTC40m
2026-07-21 SAS72H HAU → OSL Jul 21, 04:10 UTCJul 21, 04:50 UTC40m
2026-07-20 SAS320 OSL → HAU Jul 20, 20:25 UTCJul 20, 20:55 UTC30m
2026-07-20 SAS80M AMS → OSL Jul 20, 17:45 UTCJul 20, 19:10 UTC1h 25m
2026-07-20 SAS827 OSL → AMS Jul 20, 14:40 UTCJul 20, 16:05 UTC1h 25m
2026-07-20 SAS824 AMS → OSL Jul 20, 12:05 UTCJul 20, 13:30 UTC1h 25m
2026-07-20 SAS823 OSL → AMS Jul 20, 09:15 UTCJul 20, 10:40 UTC1h 25m
2026-07-20 SAS260 BGO → OSL Jul 20, 07:45 UTCJul 20, 08:20 UTC35m
2026-07-20 SAS9229 FRA → OSL Jul 20, 06:25 UTCJul 20, 07:00 UTC35m
2026-07-20 SAS1313 AES → OSL Jul 20, 04:10 UTCJul 20, 04:45 UTC35m
2026-07-19 SAS1334 OSL → AES Jul 19, 20:30 UTCJul 19, 21:05 UTC35m
2026-07-19 SAS286 BGO → OSL Jul 19, 18:40 UTCJul 19, 19:20 UTC40m

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

Mode-S 4ACA79 frequently asked

What is Mode-S code 4ACA79?
4ACA79 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSY.
Where is Mode-S 4ACA79 registered?
Mode-S code 4ACA79 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA79 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA79, octal 22545171, decimal 4,901,497.
What flights does 4ACA79 operate?
Mode-S 4ACA79 has broadcast 20 distinct callsigns, including SAS216, SAS215, SAS58A, SAS4159, SAS15E.