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 4h ago
Flights observed
278
Distinct callsigns
20
Country
SE
Last broadcast
4h ago

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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SAS295 OSL → BGO May 29, 20:10 UTCMay 29, 20:45 UTC35m
2026-05-29 SAS83G TOS → OSL May 29, 17:25 UTCMay 29, 19:00 UTC1h 35m
2026-05-29 SAS50J OSL → TOS May 29, 15:05 UTCMay 29, 16:20 UTC1h 15m
2026-05-29 SAS4417 TOS → OSL May 29, 12:35 UTCMay 29, 14:05 UTC1h 30m
2026-05-29 SAS53F OSL → TOS May 29, 10:00 UTCMay 29, 11:25 UTC1h 25m
2026-05-29 SAS260 BGO → OSL May 29, 08:30 UTCMay 29, 09:10 UTC40m
2026-05-29 SAS88E OSL → BGO May 29, 06:55 UTCMay 29, 07:35 UTC40m
2026-05-28 SAS812 LHR → OSL May 28, 19:15 UTCMay 28, 21:00 UTC1h 45m
2026-05-28 SAS811 OSL → LHR May 28, 15:40 UTCMay 28, 17:30 UTC1h 50m
2026-05-28 SAS4704 NCE → OSL May 28, 11:35 UTCMay 28, 14:20 UTC2h 45m
2026-05-28 SAS4703 OSL → NCE May 28, 07:35 UTCMay 28, 10:05 UTC2h 30m
2026-05-28 SAS78A BGO → OSL May 28, 05:35 UTCMay 28, 06:15 UTC40m
2026-05-27 SAS43D OSL → BGO May 27, 17:40 UTCMay 27, 18:20 UTC40m
2026-05-27 SAS4040 SVG → OSL May 27, 16:00 UTCMay 27, 16:35 UTC35m
2026-05-27 SAS4039 OSL → SVG May 27, 14:35 UTCMay 27, 15:15 UTC40m
2026-05-27 SAS78K DUS → OSL May 27, 11:55 UTCMay 27, 13:30 UTC1h 35m
2026-05-27 SAS816 OSL → DUS May 27, 09:30 UTCMay 27, 11:00 UTC1h 30m
2026-05-27 SAS252 BGO → OSL May 27, 07:35 UTCMay 27, 08:15 UTC40m
2026-05-27 SAS251 OSL → BGO May 27, 06:20 UTCMay 27, 07:00 UTC41m
2026-05-26 SAS1474 CPH → OSL May 26, 21:25 UTCMay 26, 22:20 UTC55m
2026-05-26 SAS1475 OSL → CPH May 26, 19:10 UTCMay 26, 20:05 UTC55m
2026-05-26 SAS1470 CPH → OSL May 26, 17:09 UTCMay 26, 18:05 UTC55m
2026-05-26 SAS1465 OSL → CPH May 26, 15:24 UTCMay 26, 16:10 UTC45m
2026-05-26 SAS4545 ALF → OSL May 26, 12:50 UTCMay 26, 14:30 UTC1h 40m
2026-05-26 SAS4546 OSL → ALF May 26, 10:10 UTCMay 26, 11:39 UTC1h 30m
2026-05-26 SAS452 CPH → OSL May 26, 08:04 UTCMay 26, 08:59 UTC55m
2026-05-26 SAS56T OSL → CPH May 26, 06:04 UTCMay 26, 06:54 UTC50m
2026-05-25 SAS93L CDG → OSL May 25, 19:00 UTCMay 25, 20:50 UTC1h 49m
2026-05-25 SAS839 OSL → CDG May 25, 15:30 UTCMay 25, 17:35 UTC2h 5m
2026-05-25 SAS4638 ATH → OSL May 25, 09:40 UTCMay 25, 13:25 UTC3h 45m
2026-05-25 SAS4637 OSL → ATH May 25, 05:10 UTCMay 25, 08:30 UTC3h 20m
2026-05-24 SAS1472 CPH → OSL May 24, 19:35 UTCMay 24, 20:25 UTC50m
2026-05-24 SAS77K OSL → CPH May 24, 17:30 UTCMay 24, 18:15 UTC45m
2026-05-24 SAS4545 ALF → OSL May 24, 14:45 UTCMay 24, 16:25 UTC1h 40m
2026-05-24 SAS4546 OSL → ALF May 24, 12:15 UTCMay 24, 13:40 UTC1h 25m
2026-05-24 SAS4473 KKN → OSL May 24, 06:35 UTCMay 24, 11:10 UTC4h 35m
2026-05-24 SAS4008 SVG → OSL May 24, 05:00 UTCMay 24, 05:35 UTC35m
2026-05-23 SAS85T ALC → SVG May 23, 17:45 UTCMay 23, 20:55 UTC3h 10m
2026-05-23 SAS4657 SVG → ALC May 23, 13:45 UTCMay 23, 16:40 UTC2h 55m
2026-05-23 SAS4762 SPU → SVG May 23, 10:25 UTCMay 23, 12:50 UTC2h 25m
2026-05-23 SAS4763 SVG → SPU May 23, 06:25 UTCMay 23, 08:45 UTC2h 20m
2026-05-22 SAS4055 OSL → SVG May 22, 18:45 UTCMay 22, 19:15 UTC30m
2026-05-22 SAS4042 SVG → OSL May 22, 17:20 UTCMay 22, 17:55 UTC35m
2026-05-22 SAS4043 OSL → SVG May 22, 15:40 UTCMay 22, 16:05 UTC25m
2026-05-22 SAS371 TRD → OSL May 22, 13:55 UTCMay 22, 14:35 UTC40m
2026-05-22 SAS354 OSL → TRD May 22, 12:30 UTCMay 22, 13:10 UTC40m
2026-05-22 SAS4473 KKN → OSL May 22, 07:05 UTCMay 22, 11:35 UTC4h 29m
2026-05-22 SAS69L TOS → OSL May 22, 04:05 UTCMay 22, 05:40 UTC1h 35m
2026-05-21 SAS27E OSL → TOS May 21, 18:45 UTCMay 21, 20:05 UTC1h 20m
2026-05-21 SAS4095 EVE → OSL May 21, 15:35 UTCMay 21, 16:45 UTC1h 10m

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 4h ago.
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, SAS4637, SAS77K, SAS4638.