Apparatus

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sensors Mode-S transponder

4ACB02

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RXB · BOEING 737-800

Hex
4ACB02
Octal
22545402
Decimal
4,901,634
Country
SE
Tail
SE-RXB
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
543
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 4ACB02.

Country allocation

The ICAO 24-bit address 4ACB02 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
NSZ2031 Norwegian Air Sweden AOC 14 2026-07-21
NSZ2030 Norwegian Air Sweden AOC 14 2026-07-22
NSZ2047 Norwegian Air Sweden AOC 12 2026-07-21
NSZ2004 Norwegian Air Sweden AOC 12 2026-07-21
NSZ2046 Norwegian Air Sweden AOC 11 2026-07-21
NSZ2005 Norwegian Air Sweden AOC 10 2026-07-21
NSZ3MB Norwegian Air Sweden AOC 8 2026-07-22
NSZ4MF Norwegian Air Sweden AOC 6 2026-07-22
NSZ2002 Norwegian Air Sweden AOC 6 2026-04-26
NSZ9UA Norwegian Air Sweden AOC 5 2026-07-23
NSZ6LA Norwegian Air Sweden AOC 5 2026-07-23
NSZ5WU Norwegian Air Sweden AOC 5 2026-07-23
NSZ59T Norwegian Air Sweden AOC 5 2026-07-23
NSZ48U Norwegian Air Sweden AOC 5 2026-07-22
NSZ4004 Norwegian Air Sweden AOC 5 2026-07-23
NSZ2CP - 5 2026-07-12
NSZ21U - 5 2026-07-12
NSZ2063 Norwegian Air Sweden AOC 5 2026-04-24
NSZ2062 Norwegian Air Sweden AOC 5 2026-04-24
NSZ2011 Norwegian Air Sweden AOC 5 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NSZ24N NCE → ARN Jul 26, 19:05 UTCJul 26, 21:45 UTC2h 40m
2026-07-26 NSZ3YL ARN → NCE Jul 26, 15:30 UTCJul 26, 18:05 UTC2h 35m
2026-07-26 NSZ4092 VBY → ARN Jul 26, 14:10 UTCJul 26, 14:40 UTC30m
2026-07-26 NSZ4091 ARN → VBY Jul 26, 12:55 UTCJul 26, 13:25 UTC30m
2026-07-26 NSZ4454 LGW → ARN Jul 26, 09:55 UTCJul 26, 11:50 UTC1h 55m
2026-07-26 NSZ4453 ARN → LGW Jul 26, 07:10 UTCJul 26, 08:35 UTC1h 25m
2026-07-26 NSZ4453 ARN → LGW Jul 26, 06:25 UTCJul 26, 07:05 UTC41m
2026-07-25 NSZ4362 OLB → ARN Jul 25, 19:05 UTCJul 25, 21:45 UTC2h 40m
2026-07-25 NSZ3AM ARN → OLB Jul 25, 14:20 UTCJul 25, 17:10 UTC2h 50m
2026-07-25 NSZ72FK CTA → ARN Jul 25, 10:00 UTCJul 25, 13:20 UTC3h 20m
2026-07-25 NSZ4371 ARN → CTA Jul 25, 05:35 UTCJul 25, 08:40 UTC3h 5m
2026-07-24 NSZ4574 PRG → ARN Jul 24, 20:05 UTCJul 24, 21:55 UTC1h 50m
2026-07-24 NSZ4573 ARN → PRG Jul 24, 17:45 UTCJul 24, 19:15 UTC1h 30m
2026-07-24 NSZ4052 SFT → ARN Jul 24, 16:00 UTCJul 24, 16:50 UTC50m
2026-07-24 NSZ4051 SFT → ARN Jul 24, 14:25 UTCJul 24, 15:15 UTC50m
2026-07-24 NSZ2NJ BCN → ARN Jul 24, 10:20 UTCJul 24, 13:30 UTC3h 10m
2026-07-24 NSZ4251 ARN → BCN Jul 24, 05:10 UTCJul 24, 08:20 UTC3h 10m
2026-07-23 NSZ60X LGW → ARN Jul 23, 19:15 UTCJul 23, 21:20 UTC2h 5m
2026-07-23 NSZ59T ARN → LGW Jul 23, 16:15 UTCJul 23, 18:15 UTC2h 0m
2026-07-23 NSZ6LA LGW → ARN Jul 23, 13:05 UTCJul 23, 15:15 UTC2h 10m
2026-07-23 NSZ5WU ARN → LGW Jul 23, 08:55 UTCJul 23, 10:55 UTC2h 0m
2026-07-23 NSZ4004 UME → ARN Jul 23, 07:05 UTCJul 23, 07:45 UTC40m
2026-07-23 NSZ9UA ARN → UME Jul 23, 05:30 UTCJul 23, 06:05 UTC35m
2026-07-22 NSZ4MF BCN → ARN Jul 22, 18:40 UTCJul 22, 21:40 UTC3h 0m
2026-07-22 NSZ3MB ARN → BCN Jul 22, 14:10 UTCJul 22, 17:15 UTC3h 5m
2026-07-22 NSZ48U BUD → ARN Jul 22, 11:10 UTCJul 22, 13:00 UTC1h 50m
2026-07-22 NSZ2030 RIX → ARN Jul 22, 05:05 UTCJul 22, 05:25 UTC20m
2026-07-21 NSZ2005 OSL → RIX Jul 21, 17:45 UTCJul 21, 19:00 UTC1h 15m
2026-07-21 NSZ2004 RIX → OSL Jul 21, 15:40 UTCJul 21, 16:55 UTC1h 15m
2026-07-21 NSZ2031 ARN → RIX Jul 21, 13:55 UTCJul 21, 14:45 UTC50m
2026-07-21 NSZ2047 CDG → ARN Jul 21, 10:35 UTCJul 21, 12:45 UTC2h 10m
2026-07-21 NSZ2046 ARN → CDG Jul 21, 07:10 UTCJul 21, 09:15 UTC2h 5m
2026-07-21 NSZ2030 RIX → ARN Jul 21, 05:00 UTCJul 21, 05:45 UTC45m
2026-07-20 NSZ2005 OSL → RIX Jul 20, 18:25 UTCJul 20, 19:40 UTC1h 15m
2026-07-20 NSZ2004 RIX → OSL Jul 20, 16:20 UTCJul 20, 17:35 UTC1h 15m
2026-07-20 NSZ2031 ARN → RIX Jul 20, 13:55 UTCJul 20, 14:55 UTC1h 0m
2026-07-20 NSZ2047 CDG → ARN Jul 20, 10:45 UTCJul 20, 12:50 UTC2h 5m
2026-07-20 NSZ2046 ARN → CDG Jul 20, 07:10 UTCJul 20, 09:25 UTC2h 15m
2026-07-20 NSZ2030 RIX → ARN Jul 20, 05:05 UTCJul 20, 05:55 UTC50m
2026-07-19 NSZ2031 - Jul 19, 20:05 UTCJul 19, 20:55 UTC50m
2026-07-19 NSZ2059 PRG → ARN Jul 19, 17:25 UTCJul 19, 18:50 UTC1h 25m
2026-07-19 NSZ2058 ARN → ARN Jul 19, 14:40 UTCJul 19, 16:20 UTC1h 40m
2026-07-19 NSZ2030 RIX → ARN Jul 19, 12:55 UTCJul 19, 13:45 UTC50m
2026-07-19 NSZ2027 - Jul 19, 10:20 UTCJul 19, 11:25 UTC1h 5m
2026-07-19 NSZ2026 - Jul 19, 08:25 UTCJul 19, 09:30 UTC1h 5m
2026-07-19 NSZ2029 ARN → RIX Jul 19, 06:40 UTCJul 19, 07:25 UTC45m
2026-07-19 NSZ2028 RIX → ARN Jul 19, 04:55 UTCJul 19, 05:45 UTC50m
2026-07-18 NSZ2097 ALC → RIX Jul 18, 20:15 UTCJul 18, 23:40 UTC3h 25m
2026-07-18 NSZ9FQ RIX → ALC Jul 18, 15:10 UTCJul 18, 19:05 UTC3h 55m
2026-07-18 NSZ2031 ARN → RIX Jul 18, 13:10 UTCJul 18, 14:00 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-RXB page for operator, model, and routing details .

Mode-S 4ACB02 frequently asked

What is Mode-S code 4ACB02?
4ACB02 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RXB.
Where is Mode-S 4ACB02 registered?
Mode-S code 4ACB02 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACB02 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACB02, octal 22545402, decimal 4,901,634.
What flights does 4ACB02 operate?
Mode-S 4ACB02 has broadcast 20 distinct callsigns, including NSZ2031, NSZ2030, NSZ2047, NSZ2004, NSZ2046.