Apparatus

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sensors Mode-S transponder

4B0E43

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-FKL · PILATUS PC-6 Turbo-Porter

Hex
4B0E43
Octal
22607103
Decimal
4,918,851
Country
CH
Tail
HB-FKL
Type
PC6T
No current signal · last broadcast 2d ago
Flights observed
107
Distinct callsigns
1
Country
CH
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 4B0E43.

Country allocation

The ICAO 24-bit address 4B0E43 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 1 distinct

Callsign Airline Flights Last seen
HBFKL - 107 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-31 HBFKL - May 31, 08:25 UTCMay 31, 08:45 UTC20m
2026-05-30 HBFKL - May 30, 17:40 UTCMay 30, 18:00 UTC20m
2026-05-30 HBFKL - May 30, 14:55 UTCMay 30, 15:15 UTC20m
2026-05-30 HBFKL - May 30, 13:10 UTCMay 30, 13:30 UTC20m
2026-05-30 HBFKL - May 30, 12:45 UTCMay 30, 13:05 UTC20m
2026-05-30 HBFKL - May 30, 12:10 UTCMay 30, 12:40 UTC30m
2026-05-30 HBFKL - May 30, 10:05 UTCMay 30, 10:30 UTC25m
2026-05-30 HBFKL - May 30, 08:35 UTCMay 30, 08:55 UTC20m
2026-05-30 HBFKL - May 30, 08:15 UTCMay 30, 08:30 UTC15m
2026-05-30 HBFKL - May 30, 07:25 UTCMay 30, 07:45 UTC20m
2026-05-30 HBFKL - May 30, 07:00 UTCMay 30, 07:20 UTC20m
2026-05-29 HBFKL - May 29, 10:20 UTCMay 29, 11:45 UTC1h 25m
2026-05-28 HBFKL - May 28, 10:10 UTCMay 28, 10:15 UTC5m
2026-05-28 HBFKL - May 28, 08:25 UTCMay 28, 10:05 UTC1h 40m
2026-05-26 HBFKL - May 26, 10:29 UTCMay 26, 11:44 UTC1h 15m
2026-05-26 HBFKL - May 26, 08:15 UTCMay 26, 09:35 UTC1h 20m
2026-05-25 HBFKL - May 25, 14:55 UTCMay 25, 15:15 UTC20m
2026-05-25 HBFKL - May 25, 13:45 UTCMay 25, 14:10 UTC25m
2026-05-25 HBFKL - May 25, 13:20 UTCMay 25, 13:40 UTC20m
2026-05-25 HBFKL - May 25, 12:25 UTCMay 25, 12:50 UTC25m
2026-05-25 HBFKL - May 25, 09:40 UTCMay 25, 09:55 UTC15m
2026-05-25 HBFKL - May 25, 09:15 UTCMay 25, 09:35 UTC20m
2026-05-25 HBFKL - May 25, 08:20 UTCMay 25, 08:40 UTC20m
2026-05-25 HBFKL - May 25, 07:30 UTCMay 25, 07:50 UTC20m
2026-05-25 HBFKL - May 25, 07:00 UTCMay 25, 07:25 UTC25m
2026-05-23 HBFKL - May 23, 15:20 UTCMay 23, 15:40 UTC20m
2026-05-23 HBFKL - May 23, 14:15 UTCMay 23, 14:35 UTC20m
2026-05-23 HBFKL - May 23, 13:10 UTCMay 23, 13:35 UTC25m
2026-05-23 HBFKL - May 23, 12:45 UTCMay 23, 13:05 UTC20m
2026-05-23 HBFKL - May 23, 12:20 UTCMay 23, 12:40 UTC20m
2026-05-23 HBFKL - May 23, 09:35 UTCMay 23, 09:55 UTC20m
2026-05-23 HBFKL - May 23, 08:35 UTCMay 23, 08:50 UTC15m
2026-05-23 HBFKL - May 23, 07:45 UTCMay 23, 08:05 UTC20m
2026-05-23 HBFKL - May 23, 07:20 UTCMay 23, 07:40 UTC20m
2026-05-23 HBFKL - May 23, 06:55 UTCMay 23, 07:15 UTC20m
2026-05-22 HBFKL - May 22, 10:15 UTCMay 22, 12:30 UTC2h 15m
2026-05-19 HBFKL - May 19, 08:25 UTCMay 19, 09:50 UTC1h 25m
2026-05-17 HBFKL - May 17, 15:20 UTCMay 17, 15:35 UTC15m
2026-05-17 HBFKL - May 17, 14:55 UTCMay 17, 15:15 UTC20m
2026-05-17 HBFKL - May 17, 14:15 UTCMay 17, 14:30 UTC15m
2026-05-17 HBFKL - May 17, 14:01 UTCMay 17, 14:10 UTC10m
2026-05-17 HBFKL - May 17, 13:15 UTCMay 17, 13:35 UTC20m
2026-05-17 HBFKL - May 17, 12:50 UTCMay 17, 13:10 UTC20m
2026-05-17 HBFKL - May 17, 12:25 UTCMay 17, 12:45 UTC20m
2026-05-17 HBFKL - May 17, 12:10 UTCMay 17, 12:20 UTC10m
2026-05-17 HBFKL - May 17, 10:00 UTCMay 17, 10:20 UTC20m
2026-05-17 HBFKL - May 17, 09:35 UTCMay 17, 09:55 UTC20m
2026-05-17 HBFKL - May 17, 09:10 UTCMay 17, 09:30 UTC20m
2026-05-17 HBFKL - May 17, 08:20 UTCMay 17, 08:35 UTC15m
2026-05-17 HBFKL - May 17, 08:00 UTCMay 17, 08:15 UTC15m

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

Mode-S 4B0E43 frequently asked

What is Mode-S code 4B0E43?
4B0E43 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-FKL.
Where is Mode-S 4B0E43 registered?
Mode-S code 4B0E43 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B0E43 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B0E43, octal 22607103, decimal 4,918,851.
What flights does 4B0E43 operate?
Mode-S 4B0E43 has broadcast 1 distinct callsign, including HBFKL.