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sensors Mode-S transponder

4ACAA6

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RUF · AIRBUS A-320neo

Hex
4ACAA6
Octal
22545246
Decimal
4,901,542
Country
SE
Tail
SE-RUF
Type
A20N
Broadcasting now · callsign SAS4546 · 33,000 ft
Flights observed
501
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 20:45 UTC

Current position

4ACAA6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACAA6 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
SAS4552 Scandinavian Airlines System 10 2026-04-17
SAS4581 Scandinavian Airlines System 9 2026-04-17
SAS4572 Scandinavian Airlines System 9 2026-04-17
SAS4561 Scandinavian Airlines System 9 2026-04-17
SAS4434 - 9 2026-07-09
SAS44Z - 8 2026-07-10
SAS78K Scandinavian Airlines System 7 2026-06-16
SAS816 - 6 2026-06-16
SAS4546 Scandinavian Airlines System 5 2026-05-13
SAS4490 - 5 2026-06-22
SAS4095 - 5 2026-07-02
SAS4094 - 5 2026-07-02
SAS810 - 4 2026-07-08
SAS809 - 4 2026-07-08
SAS55C - 4 2026-06-16
SAS50G - 4 2026-07-19
SAS4032 - 4 2026-07-06
SAS91K - 3 2026-07-19
SAS885 Scandinavian Airlines System 3 2026-06-16
SAS87F - 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS22Y ARN → LLA Jul 26, 19:50 UTCJul 26, 20:45 UTC55m
2026-07-26 SAS62F KRN → ARN Jul 26, 17:30 UTCJul 26, 18:50 UTC1h 20m
2026-07-26 SAS1044 ARN → KRN Jul 26, 15:20 UTCJul 26, 16:25 UTC1h 5m
2026-07-26 SAS7644 RHO → ARN Jul 26, 09:15 UTCJul 26, 12:55 UTC3h 40m
2026-07-26 SAS43L ARN → RHO Jul 26, 04:25 UTCJul 26, 07:50 UTC3h 26m
2026-07-25 SAS97N FAO → ARN Jul 25, 18:55 UTCJul 25, 23:00 UTC4h 5m
2026-07-25 SAS2847 ARN → FAO Jul 25, 13:50 UTCJul 25, 17:50 UTC4h 0m
2026-07-25 SAS7604 KVA → ARN Jul 25, 08:10 UTCJul 25, 11:20 UTC3h 10m
2026-07-25 SAS7603 ARN → KVA Jul 25, 04:15 UTCJul 25, 06:55 UTC2h 40m
2026-07-23 SAS1484 OSL → ARN Jul 23, 20:30 UTCJul 23, 21:10 UTC40m
2026-07-23 SAS1483 ARN → OSL Jul 23, 18:40 UTCJul 23, 19:20 UTC40m
2026-07-23 SAS58M LIN → ARN Jul 23, 11:15 UTCJul 23, 13:35 UTC2h 20m
2026-07-23 SAS63Z ARN → LIN Jul 23, 07:45 UTCJul 23, 10:05 UTC2h 20m
2026-07-23 SAS44D CPH → ARN Jul 23, 05:10 UTCJul 23, 06:05 UTC55m
2026-07-22 SAS37L - Jul 22, 20:05 UTCJul 22, 23:25 UTC3h 20m
2026-07-22 SAS2817 CPH → CHQ Jul 22, 15:50 UTCJul 22, 18:50 UTC3h 0m
2026-07-22 SAS1778 FAE → CPH Jul 22, 10:20 UTCJul 22, 14:25 UTC4h 5m
2026-07-21 SAS71G KEF → CPH Jul 21, 18:10 UTCJul 21, 20:45 UTC2h 35m
2026-07-21 SAS2595 CPH → KEF Jul 21, 13:45 UTCJul 21, 16:55 UTC3h 10m
2026-07-21 SAS2518 BRI → CPH Jul 21, 09:10 UTCJul 21, 11:25 UTC2h 15m
2026-07-21 SAS2517 CPH → BRI Jul 21, 05:35 UTCJul 21, 07:55 UTC2h 20m
2026-07-20 SAS33K - Jul 20, 18:55 UTCJul 20, 21:00 UTC2h 5m
2026-07-20 SAS49N - Jul 20, 15:35 UTCJul 20, 17:40 UTC2h 5m
2026-07-20 SAS2796 NCE → CPH Jul 20, 12:15 UTCJul 20, 14:15 UTC2h 0m
2026-07-20 SAS2795 CPH → NCE Jul 20, 08:50 UTCJul 20, 11:05 UTC2h 15m
2026-07-20 SAS1463 - Jul 20, 05:10 UTCJul 20, 06:05 UTC55m
2026-07-19 SAS39A - Jul 19, 18:10 UTCJul 19, 19:15 UTC1h 5m
2026-07-19 SAS4122 - Jul 19, 15:50 UTCJul 19, 17:05 UTC1h 15m
2026-07-19 SAS91K CPH → OSL Jul 19, 13:50 UTCJul 19, 14:40 UTC50m
2026-07-19 SAS87F OSL → CPH Jul 19, 11:45 UTCJul 19, 12:45 UTC1h 0m
2026-07-19 SAS50G CPH → OSL Jul 19, 09:55 UTCJul 19, 10:45 UTC50m
2026-07-19 SAS2836 - Jul 19, 07:20 UTCJul 19, 08:55 UTC1h 35m
2026-07-19 SAS2835 - Jul 19, 04:15 UTCJul 19, 06:05 UTC1h 50m
2026-07-18 SAS2676 - Jul 18, 19:15 UTCJul 18, 21:25 UTC2h 10m
2026-07-18 SAS2675 - Jul 18, 15:25 UTCJul 18, 17:20 UTC1h 55m
2026-07-18 SAS87F OSL → CPH Jul 18, 12:10 UTCJul 18, 13:00 UTC50m
2026-07-18 SAS50G CPH → OSL Jul 18, 10:25 UTCJul 18, 11:15 UTC50m
2026-07-18 SAS43C OSL → CPH Jul 18, 08:25 UTCJul 18, 09:15 UTC50m
2026-07-18 SAS52L CPH → OSL Jul 18, 06:25 UTCJul 18, 07:25 UTC1h 0m
2026-07-18 SAS73A OSL → CPH Jul 18, 04:35 UTCJul 18, 05:30 UTC55m
2026-07-17 SAS274 BGO → OSL Jul 17, 14:20 UTCJul 17, 15:00 UTC40m
2026-07-17 SAS269 - Jul 17, 12:55 UTCJul 17, 13:29 UTC35m
2026-07-16 SAS7358 - Jul 16, 18:25 UTCJul 16, 22:05 UTC3h 40m
2026-07-16 SAS7357 - Jul 16, 13:20 UTCJul 16, 17:00 UTC3h 40m
2026-07-16 SAS1456 CPH → OSL Jul 16, 11:10 UTCJul 16, 12:05 UTC55m
2026-07-16 SAS1467 - Jul 16, 09:05 UTCJul 16, 09:55 UTC50m
2026-07-16 SAS83D - Jul 16, 07:10 UTCJul 16, 08:00 UTC50m
2026-07-16 SAS1463 - Jul 16, 05:15 UTCJul 16, 06:05 UTC50m
2026-07-15 SAS4634 - Jul 15, 11:35 UTCJul 15, 15:20 UTC3h 45m
2026-07-15 SAS4633 - Jul 15, 06:45 UTCJul 15, 10:20 UTC3h 35m

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

Mode-S 4ACAA6 frequently asked

What is Mode-S code 4ACAA6?
4ACAA6 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RUF.
Where is Mode-S 4ACAA6 registered?
Mode-S code 4ACAA6 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAA6 broadcasting right now?
Yes. Mode-S 4ACAA6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACAA6, octal 22545246, decimal 4,901,542.
What flights does 4ACAA6 operate?
Mode-S 4ACAA6 has broadcast 20 distinct callsigns, including SAS4552, SAS4581, SAS4572, SAS4561, SAS4434.