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sensors Mode-S transponder

4ACAAF

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACAAF
Octal
22545257
Decimal
4,901,551
Country
SE
Tail
SE-RUO
Type
A20N
Broadcasting now · callsign SAS4692 · 39,000 ft
Flights observed
442
Distinct callsigns
20
Country
SE
Last broadcast
3h ago

Current position

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

Country allocation

The ICAO 24-bit address 4ACAAF 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
SAS4434 - 8 2026-07-05
SAS4095 - 6 2026-07-09
SAS4094 - 6 2026-07-09
SAS52L - 5 2026-07-02
SAS44Z - 5 2026-07-06
SAS4083 Scandinavian Airlines System 5 2026-05-30
SAS4082 Scandinavian Airlines System 5 2026-05-30
SAS4079 Scandinavian Airlines System 5 2026-05-15
SAS32T Scandinavian Airlines System 5 2026-06-29
SAS242F - 5 2026-06-29
SAS93L - 4 2026-06-16
SAS839 - 4 2026-06-16
SAS73A - 4 2026-07-02
SAS4098 Scandinavian Airlines System 4 2026-05-14
SAS238 - 4 2026-07-13
SAS1467 - 4 2026-07-06
SAS1456 - 4 2026-07-06
SAS96D Scandinavian Airlines System 3 2026-06-14
SAS810 - 3 2026-07-03
SAS809 - 3 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SAS98W - Jul 14, 13:40 UTCJul 14, 16:45 UTC3h 5m
2026-07-14 SAS4720 MXP → OSL Jul 14, 09:50 UTCJul 14, 12:05 UTC2h 15m
2026-07-14 SAS4719 - Jul 14, 06:05 UTCJul 14, 08:20 UTC2h 15m
2026-07-14 SAS339 TRD → OSL Jul 14, 04:10 UTCJul 14, 04:50 UTC40m
2026-07-13 SAS382 OSL → TRD Jul 13, 20:30 UTCJul 13, 21:10 UTC40m
2026-07-13 SAS98E BRU → OSL Jul 13, 17:35 UTCJul 13, 19:15 UTC1h 40m
2026-07-13 SAS4745 - Jul 13, 14:50 UTCJul 13, 16:25 UTC1h 35m
2026-07-13 SAS32H - Jul 13, 11:00 UTCJul 13, 13:45 UTC2h 45m
2026-07-13 SAS4713 - Jul 13, 06:30 UTCJul 13, 09:10 UTC2h 40m
2026-07-13 SAS238 - Jul 13, 04:10 UTCJul 13, 04:50 UTC40m
2026-07-12 SAS4730 ALC → BGO Jul 12, 17:35 UTCJul 12, 20:45 UTC3h 10m
2026-07-12 SAS4729 - Jul 12, 13:01 UTCJul 12, 16:25 UTC3h 25m
2026-07-12 SAS263 - Jul 12, 11:15 UTCJul 12, 11:55 UTC40m
2026-07-11 SAS7354 CHQ → OSL Jul 11, 10:50 UTCJul 11, 14:30 UTC3h 40m
2026-07-11 SAS7353 - Jul 11, 04:30 UTCJul 11, 08:05 UTC3h 35m
2026-07-10 SAS4478 - Jul 10, 16:25 UTCJul 10, 21:00 UTC4h 35m
2026-07-10 SAS4032 - Jul 10, 14:50 UTCJul 10, 15:25 UTC35m
2026-07-10 SAS7386 - Jul 10, 09:50 UTCJul 10, 13:50 UTC4h 0m
2026-07-10 SAS7385 - Jul 10, 04:35 UTCJul 10, 08:05 UTC3h 30m
2026-07-09 SAS4047 OSL → SVG Jul 9, 18:35 UTCJul 9, 19:10 UTC35m
2026-07-09 SAS4095 - Jul 9, 16:35 UTCJul 9, 17:45 UTC1h 10m
2026-07-09 SAS4094 - Jul 9, 14:05 UTCJul 9, 15:20 UTC1h 15m
2026-07-09 SAS4638 ATH → OSL Jul 9, 08:55 UTCJul 9, 12:40 UTC3h 45m
2026-07-09 SAS4637 - Jul 9, 04:10 UTCJul 9, 07:15 UTC3h 5m
2026-07-08 SAS4932 - Jul 8, 19:15 UTCJul 8, 22:00 UTC2h 45m
2026-07-08 SAS4931 OSL → FLR Jul 8, 15:45 UTCJul 8, 18:00 UTC2h 15m
2026-07-08 SAS4032 - Jul 8, 13:50 UTCJul 8, 14:30 UTC40m
2026-07-08 SAS4031 - Jul 8, 12:20 UTCJul 8, 13:00 UTC40m
2026-07-08 SAS78K DUS → OSL Jul 8, 09:10 UTCJul 8, 10:55 UTC1h 45m
2026-07-08 SAS816 OSL → DUS Jul 8, 06:45 UTCJul 8, 08:05 UTC1h 20m
2026-07-08 SAS4105 - Jul 8, 04:35 UTCJul 8, 05:45 UTC1h 10m
2026-07-07 SAS4126 - Jul 7, 20:10 UTCJul 7, 21:25 UTC1h 15m
2026-07-07 SAS7334 - Jul 7, 14:45 UTCJul 7, 18:45 UTC4h 0m
2026-07-07 SAS95Q - Jul 7, 09:55 UTCJul 7, 13:35 UTC3h 40m
2026-07-07 SAS69L - Jul 7, 04:10 UTCJul 7, 05:35 UTC1h 25m
2026-07-06 SAS4438 - Jul 6, 20:20 UTCJul 6, 21:40 UTC1h 20m
2026-07-06 SAS1456 - Jul 6, 11:15 UTCJul 6, 12:10 UTC55m
2026-07-06 SAS1467 - Jul 6, 09:25 UTCJul 6, 10:15 UTC50m
2026-07-06 SAS44Z - Jul 6, 05:40 UTCJul 6, 07:10 UTC1h 30m
2026-07-05 SAS4434 - Jul 5, 20:15 UTCJul 5, 20:25 UTC10m
2026-07-05 SAS4434 - Jul 5, 18:10 UTCJul 5, 19:25 UTC1h 15m
2026-07-05 SAS73B TRD → OSL Jul 5, 16:10 UTCJul 5, 16:50 UTC40m
2026-07-05 SAS7374 RHO → TRD Jul 5, 10:35 UTCJul 5, 14:55 UTC4h 20m
2026-07-05 SAS7373 TRD → RHO Jul 5, 04:55 UTCJul 5, 08:55 UTC4h 0m
2026-07-04 SAS54B - Jul 4, 21:15 UTCJul 4, 21:55 UTC40m
2026-07-04 SAS4095 - Jul 4, 16:55 UTCJul 4, 18:10 UTC1h 15m
2026-07-04 SAS4094 - Jul 4, 14:40 UTCJul 4, 15:45 UTC1h 5m
2026-07-04 SAS4774 - Jul 4, 09:20 UTCJul 4, 13:35 UTC4h 15m
2026-07-04 SAS4773 - Jul 4, 04:45 UTCJul 4, 08:25 UTC3h 40m
2026-07-03 SAS810 - Jul 3, 16:50 UTCJul 3, 18:30 UTC1h 40m

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

Mode-S 4ACAAF frequently asked

What is Mode-S code 4ACAAF?
4ACAAF is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RUO.
Where is Mode-S 4ACAAF registered?
Mode-S code 4ACAAF is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACAAF broadcasting right now?
Yes. Mode-S 4ACAAF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACAAF, octal 22545257, decimal 4,901,551.
What flights does 4ACAAF operate?
Mode-S 4ACAAF has broadcast 20 distinct callsigns, including SAS4434, SAS4095, SAS4094, SAS52L, SAS44Z.