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sensors Mode-S transponder

4ACB45

ICAO 24-bit transponder address · allocated to Sweden

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

Hex
4ACB45
Octal
22545505
Decimal
4,901,701
Country
SE
Tail
SE-RZE
Type
A20N
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
538
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 4ACB45.

Country allocation

The ICAO 24-bit address 4ACB45 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
SAS73B - 8 2026-06-15
SAS4788 - 8 2026-07-01
SAS4787 - 8 2026-07-01
SAS364 - 8 2026-06-15
SAS69L - 7 2026-07-10
SAS4083 Scandinavian Airlines System 7 2026-06-11
SAS4082 Scandinavian Airlines System 7 2026-06-11
SAS4079 - 7 2026-07-03
SAS4098 - 6 2026-07-02
SAS27E - 6 2026-06-15
SAS804 Scandinavian Airlines System 5 2026-07-23
SAS53D Scandinavian Airlines System 5 2026-07-23
SAS4491 - 5 2026-06-21
SAS343 Scandinavian Airlines System 5 2026-05-28
SAS83G - 4 2026-07-03
SAS834 Scandinavian Airlines System 4 2026-06-09
SAS53F Scandinavian Airlines System 4 2026-05-25
SAS48C Scandinavian Airlines System 4 2026-05-25
SAS4433 Scandinavian Airlines System 4 2026-06-03
SAS4430 Scandinavian Airlines System 4 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS688 MXP → CPH Jul 26, 20:00 UTCJul 26, 21:15 UTC1h 15m
2026-07-26 SAS687 CPH → MXP Jul 26, 17:05 UTCJul 26, 18:40 UTC1h 35m
2026-07-26 SAS34L CDG → CPH Jul 26, 14:10 UTCJul 26, 15:40 UTC1h 30m
2026-07-26 SAS44G CPH → CDG Jul 26, 11:25 UTCJul 26, 12:55 UTC1h 30m
2026-07-26 SAS39G FLR → CPH Jul 26, 07:55 UTCJul 26, 09:50 UTC1h 55m
2026-07-26 SAS86N CPH → FLR Jul 26, 04:35 UTCJul 26, 06:50 UTC2h 16m
2026-07-25 SAS51B BCN → CPH Jul 25, 18:20 UTCJul 25, 20:55 UTC2h 35m
2026-07-25 SAS65D CPH → BCN Jul 25, 13:40 UTCJul 25, 16:20 UTC2h 40m
2026-07-25 SAS47D NAP → CPH Jul 25, 09:10 UTCJul 25, 11:25 UTC2h 15m
2026-07-25 SAS81L CPH → CDG Jul 25, 04:45 UTCJul 25, 06:55 UTC2h 10m
2026-07-24 SAS1910 BIO → CPH Jul 24, 18:55 UTCJul 24, 21:10 UTC2h 15m
2026-07-24 SAS33G TOS → OSL Jul 24, 15:10 UTCJul 24, 17:25 UTC2h 15m
2026-07-24 SAS2875 BGO → CPH Jul 24, 12:50 UTCJul 24, 13:45 UTC55m
2026-07-24 SAS2864 CPH → BGO Jul 24, 10:50 UTCJul 24, 12:00 UTC1h 10m
2026-07-24 SAS62L AMS → CPH Jul 24, 08:50 UTCJul 24, 09:45 UTC55m
2026-07-24 SAS2551 CPH → AMS Jul 24, 06:25 UTCJul 24, 07:25 UTC1h 0m
2026-07-24 SAS73A OSL → CPH Jul 24, 04:05 UTCJul 24, 04:55 UTC50m
2026-07-23 SAS32T CPH → OSL Jul 23, 15:20 UTCJul 23, 16:15 UTC55m
2026-07-23 SAS242F OSL → CPH Jul 23, 13:15 UTCJul 23, 14:05 UTC50m
2026-07-23 SAS804 LHR → OSL Jul 23, 10:00 UTCJul 23, 12:00 UTC2h 0m
2026-07-23 SAS53D OSL → LHR Jul 23, 06:10 UTCJul 23, 08:00 UTC1h 50m
2026-07-22 SAS1472 CPH → OSL Jul 22, 19:30 UTCJul 22, 20:20 UTC50m
2026-07-22 SAS77K OSL → CPH Jul 22, 17:25 UTCJul 22, 18:15 UTC50m
2026-07-22 SAS78T TOS → OSL Jul 22, 14:50 UTCJul 22, 16:20 UTC1h 30m
2026-07-21 SAS1474 CPH → OSL Jul 21, 21:40 UTCJul 21, 22:30 UTC50m
2026-07-21 SAS1475 OSL → CPH Jul 21, 19:10 UTCJul 21, 19:50 UTC40m
2026-07-21 SAS1470 CPH → OSL Jul 21, 17:15 UTCJul 21, 18:10 UTC55m
2026-07-21 SAS53T CPH → CPH Jul 21, 09:45 UTCJul 21, 14:40 UTC4h 55m
2026-07-21 SAS22H - Jul 21, 07:15 UTCJul 21, 08:10 UTC55m
2026-07-21 SAS44D CPH → ARN Jul 21, 05:10 UTCJul 21, 06:00 UTC50m
2026-07-20 SAS2782 BOD → CPH Jul 20, 17:25 UTCJul 20, 19:30 UTC2h 5m
2026-07-20 SAS2781 CPH → BOD Jul 20, 14:15 UTCJul 20, 16:30 UTC2h 15m
2026-07-20 SAS7768 SSH → CPH Jul 20, 08:45 UTCJul 20, 11:55 UTC3h 10m
2026-07-20 SAS7767 CPH → SSH Jul 20, 04:30 UTCJul 20, 07:35 UTC3h 5m
2026-07-19 SAS698 PSA → CPH Jul 19, 18:15 UTCJul 19, 20:00 UTC1h 45m
2026-07-19 SAS697 CPH → PSA Jul 19, 15:05 UTCJul 19, 16:55 UTC1h 50m
2026-07-19 SAS33D PMI → CPH Jul 19, 08:15 UTCJul 19, 10:40 UTC2h 25m
2026-07-19 SAS69P CPH → CDG Jul 19, 04:10 UTCJul 19, 06:55 UTC2h 45m
2026-07-18 SAS2820 CHQ → CPH Jul 18, 18:10 UTCJul 18, 21:20 UTC3h 10m
2026-07-18 SAS82C ARN → SKG Jul 18, 13:45 UTCJul 18, 16:50 UTC3h 5m
2026-07-18 SAS2832 - Jul 18, 10:15 UTCJul 18, 12:05 UTC1h 50m
2026-07-18 SAS2831 - Jul 18, 07:20 UTCJul 18, 08:55 UTC1h 35m
2026-07-17 SAS1910 BIO → CPH Jul 17, 19:00 UTCJul 17, 21:05 UTC2h 5m
2026-07-17 SAS33G - Jul 17, 15:05 UTCJul 17, 17:35 UTC2h 30m
2026-07-17 SAS2768 MLA → CPH Jul 17, 10:55 UTCJul 17, 14:00 UTC3h 5m
2026-07-17 SAS44A LPA → CPH Jul 17, 06:54 UTCJul 17, 09:50 UTC2h 55m
2026-07-16 SAS88P DUB → CPH Jul 16, 19:25 UTCJul 16, 21:19 UTC1h 55m
2026-07-16 SAS85A CPH → DUB Jul 16, 16:19 UTCJul 16, 18:05 UTC1h 45m
2026-07-16 SAS1778 - Jul 16, 10:00 UTCJul 16, 14:35 UTC4h 35m
2026-07-16 SAS2832 - Jul 16, 07:15 UTCJul 16, 09:00 UTC1h 45m

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

Mode-S 4ACB45 frequently asked

What is Mode-S code 4ACB45?
4ACB45 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RZE.
Where is Mode-S 4ACB45 registered?
Mode-S code 4ACB45 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACB45 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACB45, octal 22545505, decimal 4,901,701.
What flights does 4ACB45 operate?
Mode-S 4ACB45 has broadcast 20 distinct callsigns, including SAS73B, SAS4788, SAS4787, SAS364, SAS69L.