sensors Mode-S transponder

4B18B9

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JJL · AIRBUS A-320

Hex
4B18B9
Octal
22614271
Decimal
4,921,529
Country
CH
Tail
HB-JJL
Type
A320
No current signal · last broadcast 14h ago
Flights observed
14
Distinct callsigns
7
Country
CH
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4B18B9.

Country allocation

The ICAO 24-bit address 4B18B9 falls within the block assigned to Switzerland (CH) by ICAO Annex 10, Volume III. Every aircraft registered in Switzerland 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 7 distinct

Callsign Airline Flights Last seen
EDW201T Edelweiss Air 4 2026-04-13
EDW220M - 3 2026-04-13
EDW25H - 2 2026-04-13
EDW214A - 2 2026-04-14
SWR37H - 1 2026-04-12
EDW215P Edelweiss Air 1 2026-04-14
EDW200E - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 EDW215P TFS → ZRH Apr 14, 09:40 UTCApr 14, 11:05 UTC1h 25m
2026-04-14 EDW214A - Apr 14, 07:25 UTCApr 14, 07:50 UTC25m
2026-04-14 EDW214A - Apr 14, 05:15 UTCApr 14, 06:50 UTC1h 35m
2026-04-13 EDW25H - Apr 13, 19:50 UTCApr 13, 20:40 UTC50m
2026-04-13 EDW25H - Apr 13, 18:15 UTCApr 13, 20:10 UTC1h 55m
2026-04-13 EDW220M - Apr 13, 16:15 UTCApr 13, 17:00 UTC45m
2026-04-13 EDW220M - Apr 13, 15:50 UTCApr 13, 17:00 UTC1h 10m
2026-04-13 EDW220M - Apr 13, 14:55 UTCApr 13, 16:15 UTC1h 20m
2026-04-13 EDW201T LPA → ZRH Apr 13, 12:20 UTCApr 13, 13:40 UTC1h 20m
2026-04-13 EDW201T LPA → ZRH Apr 13, 11:55 UTCApr 13, 13:40 UTC1h 45m
2026-04-13 EDW201T LPA → ZRH Apr 13, 09:45 UTCApr 13, 12:15 UTC2h 30m
2026-04-13 EDW201T LPA → ZRH Apr 13, 07:55 UTCApr 13, 11:50 UTC3h 55m
2026-04-13 EDW200E - Apr 13, 04:25 UTCApr 13, 07:55 UTC3h 30m
2026-04-12 SWR37H BDS → ZRH Apr 12, 18:10 UTCApr 12, 19:55 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 HB-JJL page for operator, model, and routing details .

Mode-S 4B18B9 frequently asked

What is Mode-S code 4B18B9?
4B18B9 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JJL.
Where is Mode-S 4B18B9 registered?
Mode-S code 4B18B9 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B18B9 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B18B9, octal 22614271, decimal 4,921,529.
What flights does 4B18B9 operate?
Mode-S 4B18B9 has broadcast 7 distinct callsigns, including EDW201T, EDW220M, EDW25H, EDW214A, SWR37H.