Apparatus

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sensors Mode-S transponder

4AC9E9

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4AC9E9
Octal
22544751
Decimal
4,901,353
Country
SE
Tail
SE-ROI
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
478
Distinct callsigns
20
Country
SE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4AC9E9.

Country allocation

The ICAO 24-bit address 4AC9E9 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
SAS1430 - 7 2026-07-05
SAS1429 - 7 2026-07-05
SAS64C - 6 2026-06-17
SAS40G - 6 2026-07-05
SAS1428 - 6 2026-07-05
SAS71T - 5 2026-06-17
SAS34L Scandinavian Airlines System 5 2026-06-08
SAS2822 - 5 2026-07-10
SAS2821 - 5 2026-07-10
SAS1415 - 5 2026-07-06
SAS87Y Scandinavian Airlines System 4 2026-06-09
SAS71G - 4 2026-07-08
SAS44G Scandinavian Airlines System 4 2026-06-08
SAS44D Scandinavian Airlines System 4 2026-06-08
SAS42R Scandinavian Airlines System 4 2026-06-09
SAS42E - 4 2026-06-29
SAS41K - 4 2026-06-29
SAS2774 - 4 2026-06-19
SAS2595 - 4 2026-07-08
SAS22H Scandinavian Airlines System 4 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SAS7761 - Jul 13, 03:40 UTCJul 13, 07:01 UTC3h 20m
2026-07-12 SAS92U - Jul 12, 17:01 UTCJul 12, 19:35 UTC2h 35m
2026-07-12 SAS581 CPH → MAD Jul 12, 12:35 UTCJul 12, 15:40 UTC3h 5m
2026-07-12 SAS69R - Jul 12, 09:10 UTCJul 12, 11:20 UTC2h 10m
2026-07-12 SAS79U - Jul 12, 05:50 UTCJul 12, 07:50 UTC2h 0m
2026-07-11 SAS7710 - Jul 11, 20:30 UTCJul 11, 23:40 UTC3h 10m
2026-07-11 SAS7709 CPH → CHQ Jul 11, 16:15 UTCJul 11, 19:10 UTC2h 55m
2026-07-11 SAS37L CHQ → CPH Jul 11, 10:55 UTCJul 11, 14:25 UTC3h 30m
2026-07-11 SAS2817 CPH → CHQ Jul 11, 06:40 UTCJul 11, 09:40 UTC3h 0m
2026-07-10 SAS2788 - Jul 10, 17:00 UTCJul 10, 18:50 UTC1h 50m
2026-07-10 SAS2787 - Jul 10, 14:15 UTCJul 10, 15:45 UTC1h 30m
2026-07-10 SAS2822 - Jul 10, 09:00 UTCJul 10, 12:40 UTC3h 40m
2026-07-10 SAS2821 - Jul 10, 04:25 UTCJul 10, 07:35 UTC3h 10m
2026-07-09 SAS66Z FAO → CPH Jul 9, 17:10 UTCJul 9, 20:30 UTC3h 20m
2026-07-09 SAS23N - Jul 9, 12:30 UTCJul 9, 15:55 UTC3h 25m
2026-07-09 SAS7438 - Jul 9, 07:45 UTCJul 9, 11:15 UTC3h 30m
2026-07-09 SAS7437 - Jul 9, 03:00 UTCJul 9, 05:50 UTC2h 50m
2026-07-08 SAS71G KEF → CPH Jul 8, 17:55 UTCJul 8, 20:35 UTC2h 40m
2026-07-08 SAS2595 CPH → KEF Jul 8, 13:45 UTCJul 8, 16:55 UTC3h 10m
2026-07-08 SAS42K - Jul 8, 09:45 UTCJul 8, 12:05 UTC2h 20m
2026-07-08 SAS49L - Jul 8, 06:10 UTCJul 8, 08:05 UTC1h 55m
2026-07-07 SAS2822 - Jul 7, 17:05 UTCJul 7, 20:45 UTC3h 40m
2026-07-07 SAS2821 - Jul 7, 12:35 UTCJul 7, 15:50 UTC3h 15m
2026-07-07 SAS74E NCE → CPH Jul 7, 07:20 UTCJul 7, 09:30 UTC2h 10m
2026-07-07 SAS793 - Jul 7, 04:15 UTCJul 7, 06:15 UTC2h 0m
2026-07-06 SAS88P - Jul 6, 19:20 UTCJul 6, 21:00 UTC1h 40m
2026-07-06 SAS85A - Jul 6, 16:20 UTCJul 6, 18:25 UTC2h 5m
2026-07-06 SAS2836 - Jul 6, 13:10 UTCJul 6, 14:55 UTC1h 45m
2026-07-06 SAS2835 - Jul 6, 10:25 UTCJul 6, 12:00 UTC1h 35m
2026-07-06 SAS2865 BGO → CPH Jul 6, 08:25 UTCJul 6, 09:25 UTC1h 0m
2026-07-06 SAS2862 - Jul 6, 06:25 UTCJul 6, 07:35 UTC1h 10m
2026-07-06 SAS1415 ARN → CPH Jul 6, 04:15 UTCJul 6, 05:10 UTC55m
2026-07-05 SAS1428 - Jul 5, 21:40 UTCJul 5, 22:35 UTC55m
2026-07-05 SAS40G ARN → CPH Jul 5, 19:30 UTCJul 5, 20:20 UTC50m
2026-07-05 SAS1430 CPH → ARN Jul 5, 17:45 UTCJul 5, 18:35 UTC50m
2026-07-05 SAS1429 ARN → CPH Jul 5, 15:50 UTCJul 5, 16:45 UTC55m
2026-07-05 SAS7606 - Jul 5, 10:40 UTCJul 5, 14:35 UTC3h 55m
2026-07-05 SAS7605 - Jul 5, 05:40 UTCJul 5, 08:55 UTC3h 15m
2026-07-04 SAS528 - Jul 4, 16:50 UTCJul 4, 18:45 UTC1h 55m
2026-07-04 SAS527 ARN → LHR Jul 4, 13:00 UTCJul 4, 15:20 UTC2h 20m
2026-07-04 SAS7604 - Jul 4, 08:30 UTCJul 4, 11:35 UTC3h 5m
2026-07-04 SAS7603 - Jul 4, 04:35 UTCJul 4, 07:20 UTC2h 45m
2026-07-03 SAS1410 - Jul 3, 19:40 UTCJul 3, 20:40 UTC1h 0m
2026-07-03 SAS39C ARN → CPH Jul 3, 17:40 UTCJul 3, 18:40 UTC1h 0m
2026-07-03 SAS1491 TOS → ARN Jul 3, 14:30 UTCJul 3, 16:05 UTC1h 35m
2026-07-03 SAS1492 ARN → TOS Jul 3, 12:05 UTCJul 3, 13:25 UTC1h 20m
2026-07-03 SAS76H MAN → ARN Jul 3, 08:45 UTCJul 3, 10:35 UTC1h 50m
2026-07-03 SAS61E ARN → MAN Jul 3, 05:15 UTCJul 3, 07:25 UTC2h 10m
2026-07-02 SAS1484 - Jul 2, 20:05 UTCJul 2, 20:45 UTC40m
2026-07-02 SAS810 - Jul 2, 16:45 UTCJul 2, 18:25 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-ROI page for operator, model, and routing details .

Mode-S 4AC9E9 frequently asked

What is Mode-S code 4AC9E9?
4AC9E9 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-ROI.
Where is Mode-S 4AC9E9 registered?
Mode-S code 4AC9E9 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AC9E9 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AC9E9, octal 22544751, decimal 4,901,353.
What flights does 4AC9E9 operate?
Mode-S 4AC9E9 has broadcast 20 distinct callsigns, including SAS1430, SAS1429, SAS64C, SAS40G, SAS1428.