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sensors Mode-S transponder

4AC9ED

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4AC9ED
Octal
22544755
Decimal
4,901,357
Country
SE
Tail
SE-ROM
Type
A20N
Broadcasting now · callsign SAS69K · 38,025 ft
Flights observed
561
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:15 UTC

Current position

4AC9ED is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4AC9ED 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
SAS22Y - 7 2026-06-24
SAS82K - 6 2026-06-25
SAS2874 - 6 2026-07-09
SAS46C Scandinavian Airlines System 5 2026-07-22
SAS4083 Scandinavian Airlines System 5 2026-07-24
SAS4082 Scandinavian Airlines System 5 2026-07-24
SAS2861 - 5 2026-07-08
SAS2689 Scandinavian Airlines System 5 2026-04-22
SAS1228 Scandinavian Airlines System 5 2026-06-02
SAS010 Scandinavian Airlines System 5 2026-07-22
SAS885 - 4 2026-07-22
SAS792 Scandinavian Airlines System 4 2026-06-04
SAS791 Scandinavian Airlines System 4 2026-06-04
SAS62Y Scandinavian Airlines System 4 2026-06-14
SAS62A Scandinavian Airlines System 4 2026-06-04
SAS57J Scandinavian Airlines System 4 2026-06-14
SAS4095 Scandinavian Airlines System 4 2026-07-20
SAS4094 Scandinavian Airlines System 4 2026-07-20
SAS2865 Scandinavian Airlines System 4 2026-05-30
SAS2862 Scandinavian Airlines System 4 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS4686 BCN → OSL Jul 26, 19:45 UTCJul 26, 21:15 UTC1h 30m
2026-07-26 SAS4685 OSL → BCN Jul 26, 15:15 UTCJul 26, 18:05 UTC2h 50m
2026-07-26 SAS7416 RHO → OSL Jul 26, 10:05 UTCJul 26, 14:05 UTC4h 0m
2026-07-26 SAS7415 OSL → RHO Jul 26, 04:45 UTCJul 26, 08:15 UTC3h 31m
2026-07-25 SAS4638 ATH → OSL Jul 25, 19:30 UTCJul 25, 23:05 UTC3h 35m
2026-07-25 SAS4637 OSL → ATH Jul 25, 15:00 UTCJul 25, 18:15 UTC3h 15m
2026-07-25 SAS7402 SMI → OSL Jul 25, 09:55 UTCJul 25, 13:40 UTC3h 45m
2026-07-25 SAS76R TRD → LPA Jul 25, 04:05 UTCJul 25, 07:35 UTC3h 30m
2026-07-24 SAS7404 CHQ → TRD Jul 24, 19:30 UTCJul 24, 23:55 UTC4h 25m
2026-07-24 SAS7403 TRD → CHQ Jul 24, 13:10 UTCJul 24, 16:50 UTC3h 40m
2026-07-24 SAS338 OSL → TRD Jul 24, 10:15 UTCJul 24, 10:55 UTC40m
2026-07-24 SAS4083 EVE → OSL Jul 24, 08:00 UTCJul 24, 09:10 UTC1h 10m
2026-07-24 SAS4082 OSL → EVE Jul 24, 05:40 UTCJul 24, 06:50 UTC1h 10m
2026-07-23 SAS37A ALC → OSL Jul 23, 18:45 UTCJul 23, 22:10 UTC3h 25m
2026-07-23 SAS76F OSL → ALC Jul 23, 14:05 UTCJul 23, 17:15 UTC3h 10m
2026-07-23 SAS71A BOO → OSL Jul 23, 11:10 UTCJul 23, 12:10 UTC1h 0m
2026-07-23 SAS67B OSL → BOO Jul 23, 08:50 UTCJul 23, 10:10 UTC1h 20m
2026-07-23 SAS44Z TOS → OSL Jul 23, 05:35 UTCJul 23, 07:00 UTC1h 25m
2026-07-22 SAS4434 OSL → TOS Jul 22, 20:40 UTCJul 22, 20:50 UTC10m
2026-07-22 SAS4434 OSL → TOS Jul 22, 18:20 UTCJul 22, 19:45 UTC1h 25m
2026-07-22 SAS885 ARN → OSL Jul 22, 16:40 UTCJul 22, 17:25 UTC45m
2026-07-22 SAS46C LLA → ARN Jul 22, 14:10 UTCJul 22, 15:15 UTC1h 5m
2026-07-22 SAS010 ARN → LLA Jul 22, 12:15 UTCJul 22, 13:10 UTC55m
2026-07-22 SAS2541 ARN → EDI Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-21 SAS1410 CPH → ARN Jul 21, 19:40 UTCJul 21, 20:40 UTC1h 0m
2026-07-21 SAS1465 OSL → CPH Jul 21, 15:25 UTCJul 21, 16:20 UTC55m
2026-07-21 SAS91K CPH → OSL Jul 21, 13:40 UTCJul 21, 14:35 UTC55m
2026-07-21 SAS87F OSL → CPH Jul 21, 11:50 UTCJul 21, 12:40 UTC50m
2026-07-20 SAS4478 OSL → KKN Jul 20, 16:25 UTCJul 20, 20:50 UTC4h 25m
2026-07-20 SAS4095 EVE → OSL Jul 20, 13:50 UTCJul 20, 15:05 UTC1h 15m
2026-07-20 SAS4094 OSL → EVE Jul 20, 11:35 UTCJul 20, 12:45 UTC1h 10m
2026-07-20 SAS64P TOS → OSL Jul 20, 09:15 UTCJul 20, 10:40 UTC1h 25m
2026-07-20 SAS89C OSL → TOS Jul 20, 06:50 UTCJul 20, 08:15 UTC1h 25m
2026-07-20 SAS339 TRD → OSL Jul 20, 04:05 UTCJul 20, 04:40 UTC35m
2026-07-19 SAS382 OSL → TRD Jul 19, 20:35 UTCJul 19, 21:15 UTC40m
2026-07-19 SAS4956 RHO → OSL Jul 19, 15:40 UTCJul 19, 19:25 UTC3h 45m
2026-07-19 SAS4955 OSL → RHO Jul 19, 10:25 UTCJul 19, 14:10 UTC3h 45m
2026-07-19 SAS4083 - Jul 19, 08:00 UTCJul 19, 09:25 UTC1h 25m
2026-07-19 SAS4082 - Jul 19, 05:45 UTCJul 19, 06:50 UTC1h 5m
2026-07-18 SAS69C TOS → OSL Jul 18, 13:50 UTCJul 18, 15:20 UTC1h 30m
2026-07-18 SAS54T OSL → TOS Jul 18, 11:05 UTCJul 18, 12:30 UTC1h 25m
2026-07-18 SAS4083 - Jul 18, 08:40 UTCJul 18, 09:55 UTC1h 15m
2026-07-18 SAS4082 - Jul 18, 06:25 UTCJul 18, 07:30 UTC1h 5m
2026-07-17 SAS4095 EVE → OSL Jul 17, 16:24 UTCJul 17, 17:44 UTC1h 20m
2026-07-17 SAS4094 OSL → EVE Jul 17, 14:04 UTCJul 17, 15:15 UTC1h 10m
2026-07-17 SAS4638 ATH → OSL Jul 17, 09:35 UTCJul 17, 13:05 UTC3h 30m
2026-07-17 SAS4637 - Jul 17, 04:20 UTCJul 17, 07:44 UTC3h 25m
2026-07-16 SAS37A ALC → OSL Jul 16, 22:10 UTCJul 17, 01:25 UTC3h 15m
2026-07-16 SAS76F OSL → ALC Jul 16, 16:09 UTCJul 16, 19:55 UTC3h 45m
2026-07-16 SAS65G ALC → OSL Jul 16, 10:20 UTCJul 16, 13:45 UTC3h 25m

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

Mode-S 4AC9ED frequently asked

What is Mode-S code 4AC9ED?
4AC9ED is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-ROM.
Where is Mode-S 4AC9ED registered?
Mode-S code 4AC9ED is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AC9ED broadcasting right now?
Yes. Mode-S 4AC9ED is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AC9ED, octal 22544755, decimal 4,901,357.
What flights does 4AC9ED operate?
Mode-S 4AC9ED has broadcast 20 distinct callsigns, including SAS22Y, SAS82K, SAS2874, SAS46C, SAS4083.