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sensors Mode-S transponder

4B303C

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-SGY

Hex
4B303C
Octal
22630074
Decimal
4,927,548
Country
CH
Tail
HB-SGY
Type
DA40
No current signal · last broadcast 1d ago
Flights observed
129
Distinct callsigns
1
Country
CH
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4B303C.

Country allocation

The ICAO 24-bit address 4B303C 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
HBSGY - 129 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 HBSGY FDH → ZRH Jul 16, 16:49 UTCJul 16, 17:20 UTC30m
2026-07-16 HBSGY ZRH → FDH Jul 16, 14:10 UTCJul 16, 15:25 UTC1h 15m
2026-07-15 HBSGY - Jul 15, 10:25 UTCJul 15, 11:05 UTC40m
2026-07-15 HBSGY - Jul 15, 08:15 UTCJul 15, 08:55 UTC40m
2026-07-15 HBSGY - Jul 15, 06:40 UTCJul 15, 07:45 UTC1h 5m
2026-07-14 HBSGY - Jul 14, 09:55 UTCJul 14, 11:10 UTC1h 15m
2026-07-14 HBSGY - Jul 14, 06:55 UTCJul 14, 08:45 UTC1h 50m
2026-07-12 HBSGY - Jul 12, 16:05 UTCJul 12, 16:50 UTC45m
2026-07-12 HBSGY - Jul 12, 13:55 UTCJul 12, 15:30 UTC1h 35m
2026-07-07 HBSGY ZRH → ZRH Jul 7, 06:25 UTCJul 7, 08:10 UTC1h 45m
2026-07-05 HBSGY - Jul 5, 15:45 UTCJul 5, 17:20 UTC1h 35m
2026-07-05 HBSGY - Jul 5, 12:00 UTCJul 5, 13:20 UTC1h 20m
2026-07-05 HBSGY - Jul 5, 10:05 UTCJul 5, 11:05 UTC1h 0m
2026-07-05 HBSGY - Jul 5, 08:40 UTCJul 5, 09:30 UTC50m
2026-07-04 HBSGY - Jul 4, 11:35 UTCJul 4, 11:50 UTC15m
2026-07-03 HBSGY - Jul 3, 14:30 UTCJul 3, 15:05 UTC35m
2026-07-03 HBSGY - Jul 3, 11:45 UTCJul 3, 12:00 UTC15m
2026-07-03 HBSGY - Jul 3, 09:25 UTCJul 3, 10:00 UTC35m
2026-07-02 HBSGY - Jul 2, 11:10 UTCJul 2, 11:45 UTC35m
2026-07-02 HBSGY - Jul 2, 09:30 UTCJul 2, 09:50 UTC20m
2026-07-02 HBSGY ZRH → EBU Jul 2, 06:41 UTCJul 2, 08:25 UTC1h 44m
2026-06-27 HBSGY - Jun 27, 12:39 UTCJun 27, 13:15 UTC35m
2026-06-27 HBSGY - Jun 27, 10:54 UTCJun 27, 11:04 UTC10m
2026-06-27 HBSGY - Jun 27, 10:14 UTCJun 27, 10:25 UTC10m
2026-06-27 HBSGY - Jun 27, 09:15 UTCJun 27, 09:40 UTC25m
2026-06-26 HBSGY - Jun 26, 10:30 UTCJun 26, 11:09 UTC40m
2026-06-26 HBSGY - Jun 26, 06:45 UTCJun 26, 08:45 UTC2h 0m
2026-06-22 HBSGY FDH → ZRH Jun 22, 09:45 UTCJun 22, 10:19 UTC35m
2026-06-22 HBSGY ZRH → FDH Jun 22, 06:35 UTCJun 22, 07:25 UTC50m
2026-06-21 HBSGY - Jun 21, 13:04 UTCJun 21, 14:30 UTC1h 25m
2026-06-21 HBSGY - Jun 21, 09:24 UTCJun 21, 11:00 UTC1h 35m
2026-06-21 HBSGY - Jun 21, 07:09 UTCJun 21, 07:55 UTC45m
2026-06-20 HBSGY - Jun 20, 15:39 UTCJun 20, 15:54 UTC15m
2026-06-20 HBSGY ACI → GCI Jun 20, 13:55 UTCJun 20, 14:19 UTC25m
2026-06-20 HBSGY - Jun 20, 12:04 UTCJun 20, 12:54 UTC50m
2026-06-20 HBSGY - Jun 20, 10:20 UTCJun 20, 10:55 UTC35m
2026-06-19 HBSGY - Jun 19, 16:09 UTCJun 19, 16:39 UTC30m
2026-06-19 HBSGY - Jun 19, 13:34 UTCJun 19, 14:34 UTC1h 0m
2026-06-19 HBSGY - Jun 19, 10:59 UTCJun 19, 12:09 UTC1h 10m
2026-06-18 HBSGY - Jun 18, 16:25 UTCJun 18, 16:35 UTC10m
2026-06-18 HBSGY - Jun 18, 11:05 UTCJun 18, 12:30 UTC1h 25m
2026-06-18 HBSGY - Jun 18, 08:50 UTCJun 18, 09:35 UTC45m
2026-06-18 HBSGY - Jun 18, 07:05 UTCJun 18, 07:45 UTC40m
2026-06-17 HBSGY - Jun 17, 12:00 UTCJun 17, 12:45 UTC45m
2026-06-17 HBSGY ZRH → LHA Jun 17, 09:00 UTCJun 17, 10:05 UTC1h 5m
2026-06-16 HBSGY - Jun 16, 16:39 UTCJun 16, 17:35 UTC55m
2026-06-16 HBSGY - Jun 16, 14:25 UTCJun 16, 15:50 UTC1h 25m
2026-06-15 HBSGY - Jun 15, 15:04 UTCJun 15, 15:40 UTC35m
2026-06-15 HBSGY ZRH → ACH Jun 15, 13:34 UTCJun 15, 14:05 UTC30m
2026-06-14 HBSGY - Jun 14, 17:10 UTCJun 14, 17:40 UTC30m

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

Mode-S 4B303C frequently asked

What is Mode-S code 4B303C?
4B303C is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-SGY.
Where is Mode-S 4B303C registered?
Mode-S code 4B303C is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B303C 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 4B303C, octal 22630074, decimal 4,927,548.
What flights does 4B303C operate?
Mode-S 4B303C has broadcast 1 distinct callsign, including HBSGY.