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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
Broadcasting now · callsign SAS816 · 39,025 ft
Flights observed
446
Distinct callsigns
20
Country
SE
Last broadcast
1h ago

Current position

4ACAA2 is currently broadcasting. Map zoomed to live position.

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
SAS89C - 4 2026-07-10
SAS81A - 4 2026-06-18
SAS64P - 4 2026-07-10
SAS54B - 4 2026-07-11
SAS462 - 4 2026-06-17
SAS4105 - 4 2026-07-15
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
SAS1456 - 4 2026-07-09
SAS93L - 3 2026-06-15
SAS842 - 3 2026-07-11
SAS841 - 3 2026-07-11
SAS839 - 3 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-14 SAS95Q - Jul 14, 09:20 UTCJul 14, 12:55 UTC3h 35m
2026-07-13 SAS4786 - Jul 13, 19:00 UTCJul 13, 21:15 UTC2h 15m
2026-07-13 SAS4785 OSL → KEF Jul 13, 15:20 UTCJul 13, 17:45 UTC2h 25m
2026-07-13 SAS4774 - Jul 13, 09:55 UTCJul 13, 13:55 UTC4h 0m
2026-07-13 SAS4773 OSL → GZP Jul 13, 05:01 UTCJul 13, 08:55 UTC3h 55m
2026-07-12 SAS4680 - Jul 12, 18:20 UTCJul 12, 21:50 UTC3h 30m
2026-07-12 SAS4679 - Jul 12, 12:55 UTCJul 12, 16:50 UTC3h 55m
2026-07-12 SAS4473 - Jul 12, 07:01 UTCJul 12, 11:35 UTC4h 35m
2026-07-12 SAS341 TRD → OSL Jul 12, 04:55 UTCJul 12, 05:35 UTC40m
2026-07-11 SAS54B - Jul 11, 20:40 UTCJul 11, 21:15 UTC35m
2026-07-11 SAS842 ZRH → OSL Jul 11, 17:10 UTCJul 11, 19:10 UTC2h 0m
2026-07-11 SAS841 OSL → ZRH Jul 11, 14:10 UTCJul 11, 16:05 UTC1h 55m
2026-07-11 SAS4734 - Jul 11, 10:30 UTCJul 11, 13:05 UTC2h 35m
2026-07-11 SAS4733 - Jul 11, 06:35 UTCJul 11, 08:55 UTC2h 20m
2026-07-11 SAS72H - Jul 11, 04:30 UTCJul 11, 05:10 UTC40m
2026-07-10 SAS7378 - Jul 10, 19:10 UTCJul 10, 23:05 UTC3h 55m
2026-07-10 SAS7377 - Jul 10, 13:40 UTCJul 10, 17:20 UTC3h 40m
2026-07-10 SAS65L OSL → HAU Jul 10, 11:30 UTCJul 10, 12:05 UTC35m
2026-07-10 SAS64P - Jul 10, 08:35 UTCJul 10, 10:10 UTC1h 35m
2026-07-10 SAS89C - Jul 10, 06:05 UTCJul 10, 07:20 UTC1h 15m
2026-07-09 SAS98E BRU → OSL Jul 9, 17:20 UTCJul 9, 18:50 UTC1h 30m
2026-07-09 SAS4745 - Jul 9, 14:35 UTCJul 9, 16:10 UTC1h 35m
2026-07-09 SAS1456 CPH → OSL Jul 9, 11:15 UTCJul 9, 12:10 UTC55m
2026-07-09 SAS74E NCE → CPH Jul 9, 08:15 UTCJul 9, 10:15 UTC2h 0m
2026-07-09 SAS793 CPH → NCE Jul 9, 05:10 UTCJul 9, 07:05 UTC1h 55m
2026-07-08 SAS2873 BGO → CPH Jul 8, 20:15 UTCJul 8, 21:10 UTC55m
2026-07-08 SAS2868 CPH → BGO Jul 8, 12:25 UTCJul 8, 13:35 UTC1h 10m
2026-07-08 SAS1421 ARN → CPH Jul 8, 09:15 UTCJul 8, 10:05 UTC50m
2026-07-08 SAS58E - Jul 8, 07:05 UTCJul 8, 08:05 UTC1h 0m
2026-07-08 SAS1463 - Jul 8, 05:05 UTCJul 8, 05:55 UTC50m
2026-07-07 SAS4097 - Jul 7, 19:30 UTCJul 7, 20:40 UTC1h 10m
2026-07-07 SAS4096 - Jul 7, 17:10 UTCJul 7, 18:20 UTC1h 10m
2026-07-07 SAS4770 - Jul 7, 12:20 UTCJul 7, 14:20 UTC2h 0m
2026-07-07 SAS4770 - Jul 7, 10:10 UTCJul 7, 12:15 UTC2h 5m
2026-07-07 SAS4771 - Jul 7, 04:55 UTCJul 7, 08:35 UTC3h 40m
2026-07-06 SAS4496 OSL → OSL Jul 6, 13:25 UTCJul 6, 19:35 UTC6h 10m
2026-07-05 SAS4680 - Jul 5, 17:45 UTCJul 5, 21:25 UTC3h 40m
2026-07-05 SAS4679 - Jul 5, 12:55 UTCJul 5, 16:20 UTC3h 25m
2026-07-05 SAS4473 KKN → OSL Jul 5, 06:55 UTCJul 5, 11:40 UTC4h 45m
2026-07-05 SAS341 TRD → OSL Jul 5, 05:00 UTCJul 5, 05:45 UTC45m
2026-07-04 SAS7306 - Jul 4, 20:50 UTCJul 5, 01:00 UTC4h 10m
2026-07-04 SAS52A - Jul 4, 15:30 UTCJul 4, 19:15 UTC3h 45m
2026-07-04 SAS4654 - Jul 4, 11:35 UTCJul 4, 13:45 UTC2h 10m
2026-07-04 SAS4654 - Jul 4, 09:55 UTCJul 4, 11:30 UTC1h 35m
2026-07-04 SAS4653 TRD → ALC Jul 4, 04:30 UTCJul 4, 08:10 UTC3h 40m
2026-07-03 SAS382 - Jul 3, 20:45 UTCJul 3, 21:25 UTC40m
2026-07-03 SAS4698 - Jul 3, 14:35 UTCJul 3, 19:35 UTC5h 0m

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?
Yes. Mode-S 4ACAA2 is currently airborne.
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, SAS89C.