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sensors Mode-S transponder

4ACA78

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RSX · EMBRAER ERJ-190-200

Hex
4ACA78
Octal
22545170
Decimal
4,901,496
Country
SE
Tail
SE-RSX
Type
E195
Broadcasting now · callsign SAS4172 · 6,975 ft
Flights observed
776
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:05 UTC

Current position

4ACA78 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACA78 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
SAS42F Scandinavian Airlines System 13 2026-06-16
SAS79F - 10 2026-06-16
SAS43T - 10 2026-06-16
SAS4159 - 10 2026-07-10
SAS58A - 9 2026-07-10
SAS48G - 9 2026-06-17
SAS4616 - 9 2026-06-17
SAS4615 - 9 2026-06-17
SAS4172 Scandinavian Airlines System 8 2026-06-10
SAS4163 Scandinavian Airlines System 8 2026-06-10
SAS2885 Scandinavian Airlines System 8 2026-07-18
SAS2884 - 7 2026-07-17
SAS262 - 7 2026-06-19
SAS257 - 7 2026-06-19
SAS2303 Scandinavian Airlines System 7 2026-07-02
SAS65L Scandinavian Airlines System 6 2026-07-25
SAS4561 Scandinavian Airlines System 6 2026-06-11
SAS4552 Scandinavian Airlines System 6 2026-06-11
SAS43U Scandinavian Airlines System 6 2026-07-25
SAS4176 Scandinavian Airlines System 6 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS1334 OSL → AES Jul 26, 20:35 UTCJul 26, 21:05 UTC30m
2026-07-26 SAS78K DUS → OSL Jul 26, 17:35 UTCJul 26, 19:05 UTC1h 30m
2026-07-26 SAS816 OSL → DUS Jul 26, 14:55 UTCJul 26, 16:30 UTC1h 35m
2026-07-26 SAS4417 TOS → OSL Jul 26, 12:10 UTCJul 26, 13:45 UTC1h 35m
2026-07-26 SAS53F OSL → TOS Jul 26, 09:45 UTCJul 26, 11:05 UTC1h 20m
2026-07-26 SAS361 TRD → OSL Jul 26, 08:05 UTCJul 26, 08:45 UTC40m
2026-07-26 SAS42G OSL → TRD Jul 26, 06:45 UTCJul 26, 07:25 UTC40m
2026-07-25 SAS78K DUS → OSL Jul 25, 18:25 UTCJul 25, 19:50 UTC1h 25m
2026-07-25 SAS816 OSL → DUS Jul 25, 15:40 UTCJul 25, 17:15 UTC1h 35m
2026-07-25 SAS43U HAU → OSL Jul 25, 13:55 UTCJul 25, 14:30 UTC35m
2026-07-25 SAS65L OSL → HAU Jul 25, 12:25 UTCJul 25, 13:05 UTC40m
2026-07-25 SAS4720 MXP → OSL Jul 25, 09:15 UTCJul 25, 11:25 UTC2h 10m
2026-07-25 SAS4719 OSL → MXP Jul 25, 05:25 UTCJul 25, 07:45 UTC2h 20m
2026-07-24 SAS98E BRU → OSL Jul 24, 18:10 UTCJul 24, 19:50 UTC1h 40m
2026-07-24 SAS4745 OSL → BRU Jul 24, 15:35 UTCJul 24, 17:10 UTC1h 35m
2026-07-24 SAS365 TRD → OSL Jul 24, 13:25 UTCJul 24, 14:00 UTC35m
2026-07-24 SAS350 OSL → TRD Jul 24, 12:05 UTCJul 24, 12:50 UTC45m
2026-07-24 SAS71A BOO → OSL Jul 24, 10:00 UTCJul 24, 11:15 UTC1h 15m
2026-07-24 SAS67B OSL → BOO Jul 24, 07:55 UTCJul 24, 09:10 UTC1h 15m
2026-07-24 SAS847 ARN → OSL Jul 24, 06:00 UTCJul 24, 06:40 UTC40m
2026-07-24 SAS50B OSL → ARN Jul 24, 04:20 UTCJul 24, 05:05 UTC45m
2026-07-23 SAS1472 CPH → OSL Jul 23, 19:30 UTCJul 23, 20:25 UTC55m
2026-07-23 SAS77K OSL → CPH Jul 23, 17:25 UTCJul 23, 18:10 UTC45m
2026-07-23 SAS4113 BOO → OSL Jul 23, 13:20 UTCJul 23, 14:25 UTC1h 5m
2026-07-23 SAS4112 OSL → BOO Jul 23, 11:00 UTCJul 23, 12:20 UTC1h 20m
2026-07-23 SAS64P TOS → OSL Jul 23, 08:50 UTCJul 23, 10:10 UTC1h 20m
2026-07-23 SAS89C OSL → TOS Jul 23, 06:10 UTCJul 23, 07:50 UTC1h 40m
2026-07-23 SAS2302 KSU → OSL Jul 23, 04:10 UTCJul 23, 04:50 UTC40m
2026-07-22 SAS2309 - Jul 22, 20:05 UTCJul 22, 20:35 UTC30m
2026-07-22 SAS4042 - Jul 22, 18:05 UTCJul 22, 18:45 UTC40m
2026-07-22 SAS4043 - Jul 22, 16:15 UTCJul 22, 16:55 UTC40m
2026-07-22 SAS274 BGO → OSL Jul 22, 14:40 UTCJul 22, 15:15 UTC35m
2026-07-22 SAS269 OSL → BGO Jul 22, 13:10 UTCJul 22, 13:50 UTC40m
2026-07-22 SAS268 BGO → OSL Jul 22, 11:35 UTCJul 22, 12:15 UTC40m
2026-07-22 SAS66A OSL → BRU Jul 22, 04:40 UTCJul 22, 05:25 UTC45m
2026-07-21 SAS43H - Jul 21, 19:15 UTCJul 21, 20:25 UTC1h 10m
2026-07-21 SAS4124 OSL → BOO Jul 21, 17:15 UTCJul 21, 18:30 UTC1h 15m
2026-07-21 SAS371 TRD → OSL Jul 21, 15:35 UTCJul 21, 16:15 UTC40m
2026-07-21 SAS354 - Jul 21, 14:10 UTCJul 21, 14:50 UTC40m
2026-07-21 SAS4113 - Jul 21, 12:05 UTCJul 21, 13:15 UTC1h 10m
2026-07-21 SAS4112 OSL → BOO Jul 21, 09:55 UTCJul 21, 11:15 UTC1h 20m
2026-07-21 SAS4107 BOO → OSL Jul 21, 07:55 UTCJul 21, 09:00 UTC1h 5m
2026-07-21 SAS61G OSL → BOO Jul 21, 05:50 UTCJul 21, 07:10 UTC1h 20m
2026-07-21 SAS15E KRS → OSL Jul 21, 04:05 UTCJul 21, 04:45 UTC40m
2026-07-20 SAS223 OSL → KRS Jul 20, 20:15 UTCJul 20, 20:50 UTC35m
2026-07-20 SAS20W MXP → OSL Jul 20, 16:45 UTCJul 20, 19:00 UTC2h 15m
2026-07-20 SAS4717 OSL → MXP Jul 20, 13:15 UTCJul 20, 15:25 UTC2h 10m
2026-07-20 SAS1321 - Jul 20, 11:20 UTCJul 20, 11:50 UTC30m
2026-07-20 SAS1320 - Jul 20, 09:50 UTCJul 20, 10:20 UTC30m
2026-07-20 SAS4012 SVG → OSL Jul 20, 08:15 UTCJul 20, 08:50 UTC35m

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

Mode-S 4ACA78 frequently asked

What is Mode-S code 4ACA78?
4ACA78 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RSX.
Where is Mode-S 4ACA78 registered?
Mode-S code 4ACA78 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA78 broadcasting right now?
Yes. Mode-S 4ACA78 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA78, octal 22545170, decimal 4,901,496.
What flights does 4ACA78 operate?
Mode-S 4ACA78 has broadcast 20 distinct callsigns, including SAS42F, SAS79F, SAS43T, SAS4159, SAS58A.