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sensors Mode-S transponder

4ACA74

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACA74
Octal
22545164
Decimal
4,901,492
Country
SE
Tail
SE-RST
Type
E195
Broadcasting now · callsign SAS601 · 25,475 ft
Flights observed
745
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 23:00 UTC

Current position

4ACA74 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACA74 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
SAS2746 Scandinavian Airlines System 25 2026-07-26
SAS2747 Scandinavian Airlines System 24 2026-07-26
SAS2744 Scandinavian Airlines System 22 2026-07-23
SAS2749 Scandinavian Airlines System 21 2026-07-24
SAS2884 - 19 2026-07-12
SAS31F Scandinavian Airlines System 18 2026-07-23
SAS2885 - 16 2026-07-13
SAS24F Scandinavian Airlines System 15 2026-07-23
SAS2868 Scandinavian Airlines System 13 2026-07-22
SAS1870 - 13 2026-07-11
SAS46R Scandinavian Airlines System 12 2026-06-11
SAS2873 Scandinavian Airlines System 12 2026-07-22
SAS1875 - 12 2026-07-11
SAS1630 - 12 2026-06-15
SAS82A Scandinavian Airlines System 11 2026-06-11
SAS42Y Scandinavian Airlines System 11 2026-06-12
SAS1869 Scandinavian Airlines System 11 2026-06-07
SAS1868 Scandinavian Airlines System 11 2026-06-07
SAS1629 - 11 2026-06-15
SAS59J Scandinavian Airlines System 10 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS9240 LHR → ARN Jul 26, 22:35 UTCJul 26, 23:00 UTC25m
2026-07-26 SAS2698 VCE → CPH Jul 26, 19:40 UTCJul 26, 21:25 UTC1h 45m
2026-07-26 SAS2697 CPH → VCE Jul 26, 16:00 UTCJul 26, 18:15 UTC2h 15m
2026-07-26 SAS2747 PLQ → CPH Jul 26, 14:10 UTCJul 26, 15:10 UTC1h 0m
2026-07-26 SAS2746 CPH → PLQ Jul 26, 12:30 UTCJul 26, 13:25 UTC55m
2026-07-26 SAS780 CPH → BUD Jul 26, 08:40 UTCJul 26, 10:15 UTC1h 35m
2026-07-26 SAS779 BUD → CPH Jul 26, 06:10 UTCJul 26, 07:40 UTC1h 31m
2026-07-25 SAS2980 PUY → CPH Jul 25, 19:10 UTCJul 25, 20:50 UTC1h 40m
2026-07-25 SAS2979 CPH → PUY Jul 25, 15:50 UTCJul 25, 17:30 UTC1h 40m
2026-07-25 SAS70K GVA → CPH Jul 25, 13:10 UTCJul 25, 14:45 UTC1h 35m
2026-07-25 SAS61U CPH → GVA Jul 25, 10:25 UTCJul 25, 12:05 UTC1h 40m
2026-07-25 SAS455 OSL → CPH Jul 25, 07:05 UTCJul 25, 08:00 UTC55m
2026-07-25 SAS454 CPH → OSL Jul 25, 05:05 UTCJul 25, 06:00 UTC55m
2026-07-24 SAS67L BGO → CPH Jul 24, 17:55 UTCJul 24, 18:50 UTC55m
2026-07-24 SAS2872 CPH → BGO Jul 24, 15:50 UTCJul 24, 17:05 UTC1h 15m
2026-07-24 SAS2747 PLQ → CPH Jul 24, 13:15 UTCJul 24, 14:10 UTC55m
2026-07-24 SAS2746 CPH → PLQ Jul 24, 11:25 UTCJul 24, 12:15 UTC50m
2026-07-24 SAS69B KRK → CPH Jul 24, 08:20 UTCJul 24, 09:40 UTC1h 20m
2026-07-24 SAS98K CPH → KRK Jul 24, 07:20 UTCJul 24, 07:25 UTC5m
2026-07-24 SAS98K CPH → KRK Jul 24, 06:05 UTCJul 24, 07:15 UTC1h 10m
2026-07-24 SAS2749 PLQ → CPH Jul 24, 03:55 UTCJul 24, 04:50 UTC55m
2026-07-23 SAS2744 CPH → PLQ Jul 23, 21:05 UTCJul 23, 21:50 UTC45m
2026-07-23 SAS554 AMS → CPH Jul 23, 18:50 UTCJul 23, 19:50 UTC1h 0m
2026-07-23 SAS49M CPH → AMS Jul 23, 16:20 UTCJul 23, 17:25 UTC1h 5m
2026-07-23 SAS31F TRD → CPH Jul 23, 13:30 UTCJul 23, 14:55 UTC1h 25m
2026-07-23 SAS24F TRD → CPH Jul 23, 11:00 UTCJul 23, 12:30 UTC1h 30m
2026-07-23 SAS69B KRK → CPH Jul 23, 08:25 UTCJul 23, 09:50 UTC1h 25m
2026-07-23 SAS98K CPH → KRK Jul 23, 06:10 UTCJul 23, 07:20 UTC1h 10m
2026-07-22 SAS43M BRU → CPH Jul 22, 18:50 UTCJul 22, 20:05 UTC1h 15m
2026-07-22 SAS69X CPH → BRU Jul 22, 16:35 UTCJul 22, 17:45 UTC1h 10m
2026-07-22 SAS2873 BGO → CPH Jul 22, 14:20 UTCJul 22, 15:25 UTC1h 5m
2026-07-22 SAS2868 CPH → BGO Jul 22, 12:20 UTCJul 22, 13:25 UTC1h 5m
2026-07-21 SAS43M BRU → CPH Jul 21, 18:45 UTCJul 21, 20:05 UTC1h 20m
2026-07-21 SAS69X CPH → BRU Jul 21, 16:35 UTCJul 21, 17:40 UTC1h 5m
2026-07-20 SAS67L BGO → CPH Jul 20, 17:50 UTCJul 20, 18:50 UTC1h 0m
2026-07-20 SAS2872 CPH → BGO Jul 20, 15:55 UTCJul 20, 17:05 UTC1h 10m
2026-07-20 SAS2747 PLQ → CPH Jul 20, 13:55 UTCJul 20, 14:55 UTC1h 0m
2026-07-20 SAS2746 - Jul 20, 12:15 UTCJul 20, 13:00 UTC45m
2026-07-20 SAS69B KRK → CPH Jul 20, 08:15 UTCJul 20, 09:35 UTC1h 20m
2026-07-20 SAS98K CPH → KRK Jul 20, 06:10 UTCJul 20, 07:20 UTC1h 10m
2026-07-20 SAS2749 PLQ → CPH Jul 20, 03:55 UTCJul 20, 04:55 UTC1h 0m
2026-07-19 SAS2744 - Jul 19, 21:10 UTCJul 19, 21:45 UTC35m
2026-07-19 SAS560 CDG → CPH Jul 19, 18:30 UTCJul 19, 20:05 UTC1h 35m
2026-07-19 SAS73C CPH → CDG Jul 19, 15:55 UTCJul 19, 17:25 UTC1h 30m
2026-07-19 SAS31F TRD → CPH Jul 19, 13:15 UTCJul 19, 14:35 UTC1h 20m
2026-07-19 SAS24F CPH → TRD Jul 19, 11:10 UTCJul 19, 12:25 UTC1h 15m
2026-07-19 SAS62L - Jul 19, 08:55 UTCJul 19, 09:55 UTC1h 0m
2026-07-19 SAS2551 CPH → AMS Jul 19, 06:35 UTCJul 19, 07:35 UTC1h 0m
2026-07-18 SAS64C - Jul 18, 21:15 UTCJul 18, 22:55 UTC1h 40m
2026-07-18 SAS71T CPH → BLQ Jul 18, 17:55 UTCJul 18, 19:45 UTC1h 50m

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

Mode-S 4ACA74 frequently asked

What is Mode-S code 4ACA74?
4ACA74 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RST.
Where is Mode-S 4ACA74 registered?
Mode-S code 4ACA74 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA74 broadcasting right now?
Yes. Mode-S 4ACA74 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA74, octal 22545164, decimal 4,901,492.
What flights does 4ACA74 operate?
Mode-S 4ACA74 has broadcast 20 distinct callsigns, including SAS2746, SAS2747, SAS2744, SAS2749, SAS2884.