Apparatus

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sensors Mode-S transponder

4B066D

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-CLH · CESSNA 172 Skyhawk

Hex
4B066D
Octal
22603155
Decimal
4,916,845
Country
CH
Tail
HB-CLH
Type
C172
No current signal · last broadcast 1d ago
Flights observed
108
Distinct callsigns
1
Country
CH
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4B066D.

Country allocation

The ICAO 24-bit address 4B066D 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
HBCLH - 108 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 HBCLH - Jul 16, 12:34 UTCJul 16, 13:10 UTC35m
2026-07-16 HBCLH - Jul 16, 09:40 UTCJul 16, 10:25 UTC45m
2026-07-06 HBCLH - Jul 6, 09:05 UTCJul 6, 09:30 UTC25m
2026-07-06 HBCLH - Jul 6, 06:40 UTCJul 6, 08:00 UTC1h 20m
2026-07-05 HBCLH - Jul 5, 08:35 UTCJul 5, 08:50 UTC15m
2026-07-04 HBCLH - Jul 4, 16:15 UTCJul 4, 16:40 UTC25m
2026-07-04 HBCLH - Jul 4, 14:10 UTCJul 4, 14:55 UTC45m
2026-07-04 HBCLH - Jul 4, 12:40 UTCJul 4, 13:10 UTC30m
2026-07-04 HBCLH - Jul 4, 09:00 UTCJul 4, 09:45 UTC45m
2026-07-02 HBCLH ZRH → ZRH Jul 2, 17:00 UTCJul 2, 18:30 UTC1h 30m
2026-06-30 HBCLH - Jun 30, 08:25 UTCJun 30, 08:50 UTC25m
2026-06-30 HBCLH - Jun 30, 06:25 UTCJun 30, 06:55 UTC30m
2026-06-28 HBCLH - Jun 28, 13:45 UTCJun 28, 14:14 UTC30m
2026-06-28 HBCLH - Jun 28, 12:09 UTCJun 28, 12:55 UTC45m
2026-06-28 HBCLH - Jun 28, 10:44 UTCJun 28, 11:00 UTC15m
2026-06-28 HBCLH - Jun 28, 09:10 UTCJun 28, 09:50 UTC40m
2026-06-27 HBCLH - Jun 27, 13:44 UTCJun 27, 14:05 UTC20m
2026-06-27 HBCLH - Jun 27, 12:04 UTCJun 27, 12:45 UTC40m
2026-06-27 HBCLH - Jun 27, 09:24 UTCJun 27, 10:00 UTC35m
2026-06-26 HBCLH - Jun 26, 09:05 UTCJun 26, 09:30 UTC25m
2026-06-25 HBCLH - Jun 25, 08:45 UTCJun 25, 09:40 UTC55m
2026-06-25 HBCLH - Jun 25, 07:09 UTCJun 25, 07:49 UTC40m
2026-06-24 HBCLH - Jun 24, 09:49 UTCJun 24, 10:14 UTC25m
2026-06-20 HBCLH - Jun 20, 15:49 UTCJun 20, 16:55 UTC1h 5m
2026-06-20 HBCLH - Jun 20, 14:50 UTCJun 20, 15:44 UTC55m
2026-06-20 HBCLH - Jun 20, 12:45 UTCJun 20, 13:39 UTC55m
2026-06-20 HBCLH - Jun 20, 11:44 UTCJun 20, 12:14 UTC30m
2026-06-20 HBCLH - Jun 20, 09:44 UTCJun 20, 10:09 UTC25m
2026-06-18 HBCLH - Jun 18, 17:05 UTCJun 18, 18:25 UTC1h 20m
2026-06-18 HBCLH - Jun 18, 08:40 UTCJun 18, 08:50 UTC10m
2026-06-18 HBCLH - Jun 18, 06:40 UTCJun 18, 07:25 UTC45m
2026-06-17 HBCLH - Jun 17, 15:20 UTCJun 17, 16:25 UTC1h 5m
2026-06-17 HBCLH - Jun 17, 12:10 UTCJun 17, 13:00 UTC50m
2026-06-17 HBCLH ZRH → BRN Jun 17, 09:45 UTCJun 17, 10:35 UTC50m
2026-06-16 HBCLH - Jun 16, 16:05 UTCJun 16, 17:00 UTC55m
2026-06-16 HBCLH - Jun 16, 14:30 UTCJun 16, 15:05 UTC35m
2026-06-16 HBCLH - Jun 16, 11:49 UTCJun 16, 12:39 UTC50m
2026-06-16 HBCLH - Jun 16, 09:45 UTCJun 16, 10:20 UTC35m
2026-06-16 HBCLH - Jun 16, 07:50 UTCJun 16, 08:55 UTC1h 5m
2026-06-16 HBCLH - Jun 16, 06:45 UTCJun 16, 07:15 UTC30m
2026-06-15 HBCLH ZRH → ZRH Jun 15, 06:30 UTCJun 15, 06:49 UTC20m
2026-06-07 HBCLH - Jun 7, 13:20 UTCJun 7, 13:45 UTC25m
2026-06-07 HBCLH - Jun 7, 09:25 UTCJun 7, 09:50 UTC25m
2026-06-01 HBCLH - Jun 1, 12:30 UTCJun 1, 13:20 UTC50m
2026-06-01 HBCLH - Jun 1, 09:50 UTCJun 1, 10:55 UTC1h 5m
2026-05-30 HBCLH - May 30, 12:40 UTCMay 30, 12:55 UTC15m
2026-05-30 HBCLH - May 30, 08:50 UTCMay 30, 10:30 UTC1h 40m
2026-05-28 HBCLH - May 28, 13:00 UTCMay 28, 14:30 UTC1h 30m
2026-05-25 HBCLH - May 25, 07:25 UTCMay 25, 09:30 UTC2h 5m
2026-05-24 HBCLH - May 24, 09:15 UTCMay 24, 10:05 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 HB-CLH page for operator, model, and routing details .

Mode-S 4B066D frequently asked

What is Mode-S code 4B066D?
4B066D is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-CLH.
Where is Mode-S 4B066D registered?
Mode-S code 4B066D is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B066D 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 4B066D, octal 22603155, decimal 4,916,845.
What flights does 4B066D operate?
Mode-S 4B066D has broadcast 1 distinct callsign, including HBCLH.