sensors Mode-S transponder

4ACAA2

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACAA2
Octal
22545242
Decimal
4,901,538
Country
SE
Tail
SE-RUB
Type
A20N
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
493
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S 4ACAA2.

Country allocation

The ICAO 24-bit address 4ACAA2 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
SAS4473 - 6 2026-07-12
SAS2551 Scandinavian Airlines System 6 2026-05-07
SAS62L Scandinavian Airlines System 5 2026-05-07
SAS52L - 5 2026-06-29
SAS4105 Scandinavian Airlines System 5 2026-07-18
SAS1456 Scandinavian Airlines System 5 2026-07-24
SAS89C - 4 2026-07-10
SAS81A - 4 2026-06-18
SAS816 - 4 2026-07-15
SAS64P - 4 2026-07-10
SAS54B - 4 2026-07-11
SAS462 - 4 2026-06-17
SAS4079 - 4 2026-07-01
SAS4038 Scandinavian Airlines System 4 2026-05-25
SAS380 - 4 2026-06-17
SAS24C Scandinavian Airlines System 4 2026-05-25
SAS238 - 4 2026-06-24
SAS93L - 3 2026-06-15
SAS842 - 3 2026-07-11
SAS841 - 3 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS4479 KKN → OSL Jul 26, 17:10 UTCJul 26, 21:50 UTC4h 40m
2026-07-26 SAS32T CPH → OSL Jul 26, 15:10 UTCJul 26, 16:10 UTC1h 0m
2026-07-26 SAS242F OSL → CPH Jul 26, 13:25 UTCJul 26, 14:15 UTC50m
2026-07-26 SAS822 AMS → OSL Jul 26, 10:50 UTCJul 26, 12:15 UTC1h 25m
2026-07-26 SAS821 OSL → AMS Jul 26, 08:05 UTCJul 26, 09:30 UTC1h 25m
2026-07-26 SAS69L TOS → OSL Jul 26, 04:20 UTCJul 26, 05:45 UTC1h 25m
2026-07-25 SAS4438 OSL → TOS Jul 25, 19:10 UTCJul 25, 20:30 UTC1h 20m
2026-07-25 SAS1470 CPH → OSL Jul 25, 17:20 UTCJul 25, 18:10 UTC50m
2026-07-25 SAS1465 OSL → CPH Jul 25, 15:30 UTCJul 25, 16:20 UTC50m
2026-07-25 SAS4774 GZP → OSL Jul 25, 09:00 UTCJul 25, 13:10 UTC4h 10m
2026-07-25 SAS4773 OSL → GZP Jul 25, 04:15 UTCJul 25, 07:55 UTC3h 40m
2026-07-24 SAS46B AGP → OSL Jul 24, 18:35 UTCJul 24, 22:10 UTC3h 35m
2026-07-24 SAS38R OSL → AGP Jul 24, 13:10 UTCJul 24, 17:05 UTC3h 55m
2026-07-24 SAS1456 CPH → OSL Jul 24, 11:10 UTCJul 24, 12:00 UTC50m
2026-07-24 SAS1421 ARN → CPH Jul 24, 09:25 UTCJul 24, 10:15 UTC50m
2026-07-24 SAS58E CPH → ARN Jul 24, 07:15 UTCJul 24, 08:10 UTC55m
2026-07-24 SAS54C ARN → CPH Jul 24, 05:15 UTCJul 24, 06:05 UTC50m
2026-07-23 SAS1410 CPH → ARN Jul 23, 19:35 UTCJul 23, 20:35 UTC1h 0m
2026-07-23 SAS39C ARN → CPH Jul 23, 17:40 UTCJul 23, 18:30 UTC50m
2026-07-23 SAS1408 CPH → ARN Jul 23, 15:30 UTCJul 23, 16:30 UTC1h 0m
2026-07-23 SAS1407 ARN → CPH Jul 23, 13:25 UTCJul 23, 14:15 UTC50m
2026-07-23 SAS61A CPH → ARN Jul 23, 11:10 UTCJul 23, 12:05 UTC55m
2026-07-23 SAS2865 BGO → CPH Jul 23, 08:30 UTCJul 23, 09:25 UTC55m
2026-07-23 SAS2862 CPH → BGO Jul 23, 06:30 UTCJul 23, 07:35 UTC1h 5m
2026-07-23 SAS73A OSL → CPH Jul 23, 04:00 UTCJul 23, 04:55 UTC55m
2026-07-22 SAS4774 GZP → OSL Jul 22, 17:50 UTCJul 22, 21:45 UTC3h 55m
2026-07-22 SAS4773 OSL → GZP Jul 22, 12:55 UTCJul 22, 16:35 UTC3h 40m
2026-07-21 SAS86Y - Jul 21, 16:45 UTCJul 21, 18:30 UTC1h 45m
2026-07-21 SAS809 OSL → LHR Jul 21, 13:15 UTCJul 21, 15:00 UTC1h 45m
2026-07-21 SAS4491 LYR → OSL Jul 21, 05:10 UTCJul 21, 11:35 UTC6h 25m
2026-07-20 SAS4638 ATH → OSL Jul 20, 19:45 UTCJul 20, 23:15 UTC3h 30m
2026-07-20 SAS4637 - Jul 20, 15:10 UTCJul 20, 18:35 UTC3h 25m
2026-07-20 SAS46B AGP → OSL Jul 20, 10:20 UTCJul 20, 14:05 UTC3h 45m
2026-07-20 SAS38R - Jul 20, 05:15 UTCJul 20, 09:00 UTC3h 45m
2026-07-19 SAS37A - Jul 19, 19:05 UTCJul 19, 22:25 UTC3h 20m
2026-07-19 SAS4657 - Jul 19, 14:45 UTCJul 19, 17:55 UTC3h 10m
2026-07-19 SAS4027 - Jul 19, 12:45 UTCJul 19, 13:20 UTC35m
2026-07-18 SAS4698 LPA → OSL Jul 18, 14:35 UTCJul 18, 19:10 UTC4h 35m
2026-07-18 SAS4697 OSL → LPA Jul 18, 07:50 UTCJul 18, 13:10 UTC5h 20m
2026-07-18 SAS4105 BOO → OSL Jul 18, 04:35 UTCJul 18, 05:55 UTC1h 20m
2026-07-17 SAS4128 OSL → BOO Jul 17, 20:15 UTCJul 17, 21:25 UTC1h 10m
2026-07-17 SAS15U PVK → OSL Jul 17, 10:44 UTCJul 17, 14:04 UTC3h 20m
2026-07-17 SAS7319 OSL → JSH Jul 17, 06:25 UTCJul 17, 09:35 UTC3h 10m
2026-07-16 SAS4634 - Jul 16, 16:09 UTCJul 16, 20:00 UTC3h 50m
2026-07-16 SAS4633 - Jul 16, 10:59 UTCJul 16, 14:50 UTC3h 50m
2026-07-16 SAS9240 DUS → OSL Jul 16, 07:40 UTCJul 16, 09:10 UTC1h 30m
2026-07-15 SAS816 - Jul 15, 06:45 UTCJul 15, 08:20 UTC1h 35m
2026-07-15 SAS4105 - Jul 15, 04:35 UTCJul 15, 05:50 UTC1h 15m
2026-07-14 SAS4126 OSL → BOO Jul 14, 20:10 UTCJul 14, 21:25 UTC1h 15m
2026-07-14 SAS7334 - Jul 14, 14:30 UTCJul 14, 18:25 UTC3h 55m

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

Mode-S 4ACAA2 frequently asked

What is Mode-S code 4ACAA2?
4ACAA2 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RUB.
Where is Mode-S 4ACAA2 registered?
Mode-S code 4ACAA2 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAA2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACAA2, octal 22545242, decimal 4,901,538.
What flights does 4ACAA2 operate?
Mode-S 4ACAA2 has broadcast 20 distinct callsigns, including SAS4473, SAS2551, SAS62L, SAS52L, SAS4105.