sensors Mode-S transponder

4AB822

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-NAB · BOEING 737 MAX 8

Hex
4AB822
Octal
22534042
Decimal
4,896,802
Country
SE
Tail
SE-NAB
Type
B38M
No current signal · last broadcast 1d ago
Flights observed
6
Distinct callsigns
3
Country
SE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4AB822.

Country allocation

The ICAO 24-bit address 4AB822 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 3 distinct

Callsign Airline Flights Last seen
NSZ5074 - 3 2026-04-13
NSZ5123 - 2 2026-04-12
NSZ9ED Norwegian Air Sweden AOC 1 2026-04-12

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 NSZ5074 - Apr 13, 16:15 UTCApr 13, 17:40 UTC1h 25m
2026-04-13 NSZ5074 - Apr 13, 15:50 UTCApr 13, 17:40 UTC1h 50m
2026-04-13 NSZ5074 - Apr 13, 14:25 UTCApr 13, 16:15 UTC1h 50m
2026-04-12 NSZ5123 - Apr 12, 23:55 UTCApr 13, 00:15 UTC20m
2026-04-12 NSZ5123 - Apr 12, 19:40 UTCApr 12, 20:15 UTC35m
2026-04-12 NSZ9ED AGP → HEL Apr 12, 17:15 UTCApr 12, 18:40 UTC1h 25m

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

Mode-S 4AB822 frequently asked

What is Mode-S code 4AB822?
4AB822 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-NAB.
Where is Mode-S 4AB822 registered?
Mode-S code 4AB822 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AB822 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AB822, octal 22534042, decimal 4,896,802.
What flights does 4AB822 operate?
Mode-S 4AB822 has broadcast 3 distinct callsigns, including NSZ5074, NSZ5123, NSZ9ED.