Apparatus

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sensors Mode-S transponder

4ACB42

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACB42
Octal
22545502
Decimal
4,901,698
Country
SE
Tail
SE-RZB
Type
A20N
No current signal · last broadcast Jul 26, 13:30 UTC
Flights observed
532
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 13:30 UTC

Last known position

Most recent position reported by Mode-S 4ACB42.

Country allocation

The ICAO 24-bit address 4ACB42 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
SAS22E - 8 2026-07-04
SAS11M - 8 2026-07-13
SAS4105 Scandinavian Airlines System 7 2026-07-24
SAS69L - 6 2026-07-17
SAS4637 - 6 2026-07-04
SAS4546 Scandinavian Airlines System 6 2026-06-19
SAS4545 - 6 2026-06-19
SAS1470 - 6 2026-06-27
SAS1465 Scandinavian Airlines System 6 2026-06-27
SAS85T - 5 2026-07-17
SAS83G Scandinavian Airlines System 5 2026-07-22
SAS50J - 5 2026-07-22
SAS4679 - 5 2026-06-24
SAS4657 - 5 2026-07-17
SAS4638 - 5 2026-07-04
SAS4473 Scandinavian Airlines System 5 2026-07-17
SAS4124 - 5 2026-06-19
SAS4098 Scandinavian Airlines System 5 2026-07-22
SAS1456 - 5 2026-06-25
SAS91K - 4 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS4804 SPU → OSL Jul 26, 10:55 UTCJul 26, 13:30 UTC2h 35m
2026-07-26 SAS4803 OSL → SPU Jul 26, 07:15 UTCJul 26, 09:30 UTC2h 15m
2026-07-26 SAS246 BGO → OSL Jul 26, 05:30 UTCJul 26, 06:05 UTC35m
2026-07-25 SAS4764 SPU → BGO Jul 25, 20:20 UTCJul 25, 23:00 UTC2h 40m
2026-07-25 SAS4805 TRD → SPU Jul 25, 16:15 UTCJul 25, 19:00 UTC2h 45m
2026-07-25 SAS4654 ALC → TRD Jul 25, 11:20 UTCJul 25, 15:15 UTC3h 55m
2026-07-25 SAS4653 TRD → ALC Jul 25, 04:35 UTCJul 25, 08:50 UTC4h 15m
2026-07-24 SAS382 OSL → TRD Jul 24, 21:10 UTCJul 24, 21:50 UTC40m
2026-07-24 SAS4698 LPA → OSL Jul 24, 14:50 UTCJul 24, 19:20 UTC4h 30m
2026-07-24 SAS4697 OSL → LPA Jul 24, 07:45 UTCJul 24, 12:55 UTC5h 10m
2026-07-24 SAS4105 BOO → OSL Jul 24, 04:40 UTCJul 24, 05:45 UTC1h 5m
2026-07-23 SAS4126 OSL → BOO Jul 23, 20:45 UTCJul 23, 21:45 UTC1h 0m
2026-07-23 SAS4706 NCE → OSL Jul 23, 16:55 UTCJul 23, 19:50 UTC2h 55m
2026-07-23 SAS4705 OSL → NCE Jul 23, 12:40 UTCJul 23, 15:00 UTC2h 20m
2026-07-23 SAS4472 OSL → KKN Jul 23, 06:55 UTCJul 23, 11:40 UTC4h 45m
2026-07-23 SAS4079 EVE → OSL Jul 23, 04:35 UTCJul 23, 05:40 UTC1h 5m
2026-07-22 SAS4098 OSL → EVE Jul 22, 20:00 UTCJul 22, 21:15 UTC1h 15m
2026-07-22 SAS83G TOS → OSL Jul 22, 17:30 UTCJul 22, 18:50 UTC1h 20m
2026-07-22 SAS50J - Jul 22, 14:50 UTCJul 22, 16:10 UTC1h 20m
2026-07-22 SAS81E OSL → OSL Jul 22, 04:20 UTCJul 22, 13:35 UTC9h 15m
2026-07-21 SAS7308 HER → SVG Jul 21, 19:05 UTCJul 21, 22:15 UTC3h 10m
2026-07-21 SAS74P TRD → BOJ Jul 21, 14:45 UTCJul 21, 17:55 UTC3h 10m
2026-07-21 SAS7322 JTR → BGO Jul 21, 10:20 UTCJul 21, 13:45 UTC3h 25m
2026-07-21 SAS7307 SVG → HER Jul 21, 06:35 UTCJul 21, 08:50 UTC2h 15m
2026-07-21 SAS7307 SVG → HER Jul 21, 04:05 UTCJul 21, 05:35 UTC1h 30m
2026-07-20 SAS842 ZRH → OSL Jul 20, 17:35 UTCJul 20, 19:35 UTC2h 0m
2026-07-20 SAS841 OSL → ZRH Jul 20, 14:40 UTCJul 20, 16:35 UTC1h 55m
2026-07-20 SAS32H OSL → FCO Jul 20, 11:00 UTCJul 20, 13:40 UTC2h 40m
2026-07-20 SAS4713 OSL → FCO Jul 20, 06:25 UTCJul 20, 09:15 UTC2h 50m
2026-07-19 SAS4042 - Jul 19, 16:15 UTCJul 19, 16:50 UTC35m
2026-07-19 SAS7372 RHO → OSL Jul 19, 10:40 UTCJul 19, 14:30 UTC3h 50m
2026-07-19 SAS7371 OSL → RHO Jul 19, 05:20 UTCJul 19, 08:55 UTC3h 35m
2026-07-18 SAS61W - Jul 18, 20:30 UTCJul 19, 00:10 UTC3h 40m
2026-07-18 SAS7309 KRS → CHQ Jul 18, 15:35 UTCJul 18, 19:05 UTC3h 30m
2026-07-18 SAS7310 CHQ → HAU Jul 18, 09:40 UTCJul 18, 13:15 UTC3h 35m
2026-07-18 SAS7303 SVG → CHQ Jul 18, 04:35 UTCJul 18, 08:15 UTC3h 40m
2026-07-17 SAS85T - Jul 17, 18:44 UTCJul 17, 21:39 UTC2h 55m
2026-07-17 SAS4657 - Jul 17, 14:35 UTCJul 17, 17:40 UTC3h 5m
2026-07-17 SAS4031 OSL → SVG Jul 17, 12:50 UTCJul 17, 13:25 UTC35m
2026-07-17 SAS4473 KKN → OSL Jul 17, 07:00 UTCJul 17, 11:39 UTC4h 40m
2026-07-17 SAS69L - Jul 17, 04:04 UTCJul 17, 05:45 UTC1h 40m
2026-07-16 SAS4438 - Jul 16, 20:09 UTCJul 16, 21:30 UTC1h 20m
2026-07-16 SAS98E BRU → OSL Jul 16, 17:20 UTCJul 16, 18:55 UTC1h 35m
2026-07-16 SAS4745 OSL → BRU Jul 16, 14:40 UTCJul 16, 16:09 UTC1h 30m
2026-07-16 SAS4708 FAO → OSL Jul 16, 09:15 UTCJul 16, 12:49 UTC3h 35m
2026-07-16 SAS4707 - Jul 16, 04:15 UTCJul 16, 08:10 UTC3h 55m
2026-07-15 SAS20W MXP → OSL Jul 15, 19:15 UTCJul 15, 21:35 UTC2h 20m
2026-07-15 SAS4717 - Jul 15, 15:35 UTCJul 15, 17:55 UTC2h 20m
2026-07-14 SAS91K CPH → OSL Jul 14, 15:50 UTCJul 14, 16:35 UTC45m
2026-07-14 SAS87F OSL → CPH Jul 14, 11:50 UTCJul 14, 12:40 UTC50m

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

Mode-S 4ACB42 frequently asked

What is Mode-S code 4ACB42?
4ACB42 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RZB.
Where is Mode-S 4ACB42 registered?
Mode-S code 4ACB42 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACB42 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACB42, octal 22545502, decimal 4,901,698.
What flights does 4ACB42 operate?
Mode-S 4ACB42 has broadcast 20 distinct callsigns, including SAS22E, SAS11M, SAS4105, SAS69L, SAS4637.