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
No current signal · last broadcast 18h ago
Flights observed
14
Distinct callsigns
7
Country
SE
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4ACA74.

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 7 distinct

Callsign Airline Flights Last seen
SAS46R Scandinavian Airlines System 3 2026-04-14
SAS1793 - 3 2026-04-13
SAS82A Scandinavian Airlines System 2 2026-04-14
SAS2746 Scandinavian Airlines System 2 2026-04-13
SAS1794 - 2 2026-04-13
SAS2747 - 1 2026-04-13
SAS1596 - 1 2026-04-12

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS46R CDG → CPH Apr 14, 09:10 UTCApr 14, 09:55 UTC45m
2026-04-14 SAS46R CDG → CPH Apr 14, 08:20 UTCApr 14, 09:05 UTC45m
2026-04-14 SAS82A CPH → CDG Apr 14, 05:30 UTCApr 14, 07:00 UTC1h 30m
2026-04-13 SAS1794 - Apr 13, 19:50 UTCApr 13, 20:25 UTC35m
2026-04-13 SAS1794 - Apr 13, 18:35 UTCApr 13, 20:10 UTC1h 35m
2026-04-13 SAS1793 - Apr 13, 16:15 UTCApr 13, 17:30 UTC1h 15m
2026-04-13 SAS1793 - Apr 13, 15:50 UTCApr 13, 17:30 UTC1h 40m
2026-04-13 SAS1793 - Apr 13, 15:35 UTCApr 13, 16:15 UTC40m
2026-04-13 SAS2747 - Apr 13, 13:00 UTCApr 13, 14:00 UTC1h 0m
2026-04-13 SAS2746 CPH → PLQ Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 SAS2746 CPH → PLQ Apr 13, 11:15 UTCApr 13, 12:05 UTC50m
2026-04-13 SAS46R - Apr 13, 08:25 UTCApr 13, 09:55 UTC1h 30m
2026-04-13 SAS82A - Apr 13, 05:25 UTCApr 13, 07:05 UTC1h 40m
2026-04-12 SAS1596 BRU → CPH Apr 12, 17:50 UTCApr 12, 18:55 UTC1h 5m

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?
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 4ACA74, octal 22545164, decimal 4,901,492.
What flights does 4ACA74 operate?
Mode-S 4ACA74 has broadcast 7 distinct callsigns, including SAS46R, SAS1793, SAS82A, SAS2746, SAS1794.