sensors Mode-S transponder

4ACA70

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACA70
Octal
22545160
Decimal
4,901,488
Country
SE
Tail
SE-RSP
Type
E195
No current signal · last broadcast 18h ago
Flights observed
17
Distinct callsigns
12
Country
SE
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4ACA70.

Country allocation

The ICAO 24-bit address 4ACA70 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 12 distinct

Callsign Airline Flights Last seen
SAS94J - 2 2026-04-13
SAS1635 - 2 2026-04-13
SAS1630 Scandinavian Airlines System 2 2026-04-14
SAS1629 Scandinavian Airlines System 2 2026-04-14
SAS1208 - 2 2026-04-13
SAS2884 - 1 2026-04-13
SAS2873 - 1 2026-04-13
SAS2868 - 1 2026-04-13
SAS1636 - 1 2026-04-12
SAS1212 - 1 2026-04-13
SAS1211 - 1 2026-04-13
SAS1207 - 1 2026-04-13

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS1630 DUS → CPH Apr 14, 09:10 UTCApr 14, 09:25 UTC15m
2026-04-14 SAS1630 DUS → CPH Apr 14, 08:30 UTCApr 14, 09:05 UTC35m
2026-04-14 SAS1629 CPH → DUS Apr 14, 07:10 UTCApr 14, 07:25 UTC15m
2026-04-14 SAS1629 CPH → DUS Apr 14, 06:20 UTCApr 14, 07:10 UTC50m
2026-04-13 SAS2884 - Apr 13, 21:20 UTCApr 13, 22:35 UTC1h 15m
2026-04-13 SAS94J - Apr 13, 19:45 UTCApr 13, 19:55 UTC10m
2026-04-13 SAS94J - Apr 13, 18:50 UTCApr 13, 19:55 UTC1h 5m
2026-04-13 SAS1635 - Apr 13, 16:30 UTCApr 13, 17:45 UTC1h 15m
2026-04-13 SAS2873 - Apr 13, 14:20 UTCApr 13, 15:30 UTC1h 10m
2026-04-13 SAS2868 - Apr 13, 12:25 UTCApr 13, 13:30 UTC1h 5m
2026-04-13 SAS1212 - Apr 13, 10:50 UTCApr 13, 11:25 UTC35m
2026-04-13 SAS1211 - Apr 13, 09:30 UTCApr 13, 10:00 UTC30m
2026-04-13 SAS1208 - Apr 13, 08:20 UTCApr 13, 08:30 UTC10m
2026-04-13 SAS1208 - Apr 13, 08:00 UTCApr 13, 08:15 UTC15m
2026-04-13 SAS1207 CPH → AAL Apr 13, 06:45 UTCApr 13, 07:20 UTC35m
2026-04-12 SAS1636 - Apr 12, 18:35 UTCApr 12, 19:40 UTC1h 5m
2026-04-12 SAS1635 - Apr 12, 17:15 UTCApr 12, 17:30 UTC15m

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

Mode-S 4ACA70 frequently asked

What is Mode-S code 4ACA70?
4ACA70 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSP.
Where is Mode-S 4ACA70 registered?
Mode-S code 4ACA70 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA70 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 4ACA70, octal 22545160, decimal 4,901,488.
What flights does 4ACA70 operate?
Mode-S 4ACA70 has broadcast 12 distinct callsigns, including SAS94J, SAS1635, SAS1630, SAS1629, SAS1208.