Apparatus

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sensors Mode-S transponder

4B0F50

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-FUU · PILATUS PC-12

Hex
4B0F50
Octal
22607520
Decimal
4,919,120
Country
CH
Tail
HB-FUU
Type
PC12
Broadcasting now · callsign HUE12H · 23,000 ft
Flights observed
55
Distinct callsigns
2
Country
CH
Last broadcast
1h ago

Current position

4B0F50 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B0F50 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 2 distinct

Callsign Airline Flights Last seen
HUE12H - 54 2026-05-30
HBFUU - 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 HUE12H - May 30, 07:20 UTCMay 30, 10:00 UTC2h 40m
2026-05-30 HUE12H - May 30, 05:30 UTCMay 30, 06:40 UTC1h 10m
2026-05-29 HUE12H - May 29, 13:25 UTCMay 29, 15:20 UTC1h 55m
2026-05-29 HUE12H - May 29, 10:30 UTCMay 29, 12:25 UTC1h 55m
2026-05-29 HUE12H ZRH → GVA May 29, 09:10 UTCMay 29, 09:55 UTC45m
2026-05-29 HUE12H - May 29, 07:45 UTCMay 29, 08:15 UTC30m
2026-05-25 HUE12H - May 25, 17:10 UTCMay 25, 17:30 UTC20m
2026-05-25 HUE12H - May 25, 14:20 UTCMay 25, 16:05 UTC1h 45m
2026-05-22 HUE12H ZRH → CIA May 22, 15:00 UTCMay 22, 16:35 UTC1h 35m
2026-05-22 HUE12H - May 22, 10:30 UTCMay 22, 12:30 UTC2h 0m
2026-05-22 HUE12H - May 22, 07:15 UTCMay 22, 09:15 UTC2h 0m
2026-05-21 HUE12H - May 21, 16:40 UTCMay 21, 17:00 UTC20m
2026-05-21 HUE12H NCE → ZRH May 21, 14:25 UTCMay 21, 15:45 UTC1h 20m
2026-05-19 HUE12H - May 19, 13:10 UTCMay 19, 14:50 UTC1h 40m
2026-05-18 HUE12H - May 18, 19:15 UTCMay 18, 20:40 UTC1h 25m
2026-05-17 HUE12H - May 17, 08:25 UTCMay 17, 09:45 UTC1h 20m
2026-05-17 HUE12H - May 17, 07:00 UTCMay 17, 07:25 UTC25m
2026-05-11 HUE12H - May 11, 13:00 UTCMay 11, 14:40 UTC1h 40m
2026-05-11 HUE12H - May 11, 10:15 UTCMay 11, 12:10 UTC1h 55m
2026-05-09 HUE12H OBF → FKB May 9, 12:55 UTCMay 9, 13:40 UTC45m
2026-05-09 HUE12H - May 9, 10:55 UTCMay 9, 12:00 UTC1h 5m
2026-05-09 HUE12H - May 9, 09:40 UTCMay 9, 09:50 UTC10m
2026-05-06 HUE12H - May 6, 14:00 UTCMay 6, 15:25 UTC1h 25m
2026-05-05 HUE12H - May 5, 12:00 UTCMay 5, 12:45 UTC45m
2026-05-04 HUE12H - May 4, 11:20 UTCMay 4, 12:35 UTC1h 15m
2026-05-04 HUE12H - May 4, 08:20 UTCMay 4, 10:10 UTC1h 50m
2026-05-03 HUE12H - May 3, 08:15 UTCMay 3, 10:45 UTC2h 30m
2026-05-02 HUE12H - May 2, 12:15 UTCMay 2, 13:50 UTC1h 35m
2026-05-02 HUE12H - May 2, 09:45 UTCMay 2, 11:00 UTC1h 15m
2026-05-02 HUE12H - May 2, 08:10 UTCMay 2, 08:50 UTC40m
2026-05-01 HUE12H BCN → MUC May 1, 09:30 UTCMay 1, 11:55 UTC2h 25m
2026-05-01 HUE12H - May 1, 06:10 UTCMay 1, 07:55 UTC1h 45m
2026-04-29 HUE12H - Apr 29, 15:40 UTCApr 29, 16:45 UTC1h 5m
2026-04-29 HUE12H - Apr 29, 07:29 UTCApr 29, 08:34 UTC1h 5m
2026-04-27 HUE12H - Apr 27, 15:05 UTCApr 27, 15:10 UTC5m
2026-04-26 HUE12H - Apr 26, 11:50 UTCApr 26, 15:30 UTC3h 40m
2026-04-26 HUE12H - Apr 26, 09:15 UTCApr 26, 10:00 UTC45m
2026-04-22 HUE12H ATH → SKG Apr 22, 15:30 UTCApr 22, 16:25 UTC55m
2026-04-22 HUE12H - Apr 22, 10:35 UTCApr 22, 13:55 UTC3h 20m
2026-04-21 HUE12H - Apr 21, 14:01 UTCApr 21, 15:35 UTC1h 35m
2026-04-21 HUE12H - Apr 21, 09:55 UTCApr 21, 12:45 UTC2h 50m
2026-04-21 HUE12H - Apr 21, 07:55 UTCApr 21, 08:50 UTC55m
2026-04-21 HUE12H - Apr 21, 06:10 UTCApr 21, 06:40 UTC30m
2026-04-17 HUE12H - Apr 17, 15:20 UTCApr 17, 15:35 UTC15m
2026-04-17 HUE12H - Apr 17, 13:50 UTCApr 17, 15:15 UTC1h 24m
2026-04-17 HUE12H - Apr 17, 11:20 UTCApr 17, 11:35 UTC15m
2026-04-17 HUE12H - Apr 17, 09:45 UTCApr 17, 11:15 UTC1h 30m
2026-04-17 HUE12H - Apr 17, 08:20 UTCApr 17, 08:50 UTC30m
2026-04-16 HUE12H - Apr 16, 15:15 UTCApr 16, 17:10 UTC1h 55m
2026-04-16 HUE12H - Apr 16, 07:19 UTCApr 16, 08:45 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 HB-FUU page for operator, model, and routing details .

Mode-S 4B0F50 frequently asked

What is Mode-S code 4B0F50?
4B0F50 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-FUU.
Where is Mode-S 4B0F50 registered?
Mode-S code 4B0F50 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B0F50 broadcasting right now?
Yes. Mode-S 4B0F50 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B0F50, octal 22607520, decimal 4,919,120.
What flights does 4B0F50 operate?
Mode-S 4B0F50 has broadcast 2 distinct callsigns, including HUE12H, HBFUU.