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sensors Mode-S transponder

4B3273

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-TCT · CESSNA TR182 Turbo Skylane RG

Hex
4B3273
Octal
22631163
Decimal
4,928,115
Country
CH
Tail
HB-TCT
Type
C82T
No current signal · last broadcast 1d ago
Flights observed
137
Distinct callsigns
2
Country
CH
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4B3273.

Country allocation

The ICAO 24-bit address 4B3273 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
HBTCT - 136 2026-07-16
THY4BZ Turkish Airlines 1 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 HBTCT - Jul 16, 17:30 UTCJul 16, 17:54 UTC25m
2026-07-16 HBTCT - Jul 16, 16:30 UTCJul 16, 16:55 UTC25m
2026-07-16 HBTCT - Jul 16, 12:00 UTCJul 16, 12:55 UTC55m
2026-07-13 HBTCT - Jul 13, 06:50 UTCJul 13, 07:05 UTC15m
2026-07-13 HBTCT - Jul 13, 05:31 UTCJul 13, 06:05 UTC35m
2026-07-12 HBTCT - Jul 12, 13:55 UTCJul 12, 15:30 UTC1h 35m
2026-07-12 HBTCT - Jul 12, 11:25 UTCJul 12, 12:20 UTC55m
2026-07-12 HBTCT - Jul 12, 09:55 UTCJul 12, 10:45 UTC50m
2026-07-12 HBTCT - Jul 12, 08:30 UTCJul 12, 09:30 UTC1h 0m
2026-07-09 HBTCT - Jul 9, 12:45 UTCJul 9, 13:25 UTC40m
2026-07-09 HBTCT - Jul 9, 10:10 UTCJul 9, 10:30 UTC20m
2026-07-09 HBTCT - Jul 9, 06:10 UTCJul 9, 08:00 UTC1h 50m
2026-07-08 HBTCT - Jul 8, 15:25 UTCJul 8, 16:20 UTC55m
2026-07-07 HBTCT - Jul 7, 16:55 UTCJul 7, 19:10 UTC2h 15m
2026-07-06 HBTCT - Jul 6, 12:50 UTCJul 6, 13:15 UTC25m
2026-07-06 HBTCT - Jul 6, 11:40 UTCJul 6, 12:05 UTC25m
2026-07-06 HBTCT - Jul 6, 06:40 UTCJul 6, 06:55 UTC15m
2026-07-06 HBTCT - Jul 6, 05:30 UTCJul 6, 06:00 UTC30m
2026-07-05 HBTCT - Jul 5, 11:10 UTCJul 5, 12:05 UTC55m
2026-07-05 HBTCT - Jul 5, 08:10 UTCJul 5, 09:35 UTC1h 25m
2026-07-04 HBTCT - Jul 4, 11:10 UTCJul 4, 12:05 UTC55m
2026-07-04 HBTCT - Jul 4, 08:35 UTCJul 4, 09:35 UTC1h 0m
2026-07-03 HBTCT - Jul 3, 15:50 UTCJul 3, 16:35 UTC45m
2026-07-03 HBTCT - Jul 3, 09:20 UTCJul 3, 09:35 UTC15m
2026-07-03 HBTCT - Jul 3, 08:15 UTCJul 3, 08:25 UTC10m
2026-07-02 HBTCT - Jul 2, 17:25 UTCJul 2, 18:55 UTC1h 30m
2026-07-02 HBTCT - Jul 2, 16:10 UTCJul 2, 16:25 UTC15m
2026-07-02 HBTCT - Jul 2, 14:20 UTCJul 2, 15:25 UTC1h 5m
2026-07-02 HBTCT - Jul 2, 11:30 UTCJul 2, 11:40 UTC10m
2026-07-02 HBTCT - Jul 2, 10:05 UTCJul 2, 10:50 UTC45m
2026-07-02 HBTCT - Jul 2, 08:10 UTCJul 2, 08:30 UTC20m
2026-06-28 HBTCT - Jun 28, 15:49 UTCJun 28, 16:35 UTC45m
2026-06-28 HBTCT - Jun 28, 11:39 UTCJun 28, 12:19 UTC40m
2026-06-28 HBTCT - Jun 28, 09:55 UTCJun 28, 10:35 UTC40m
2026-06-27 HBTCT - Jun 27, 09:09 UTCJun 27, 10:25 UTC1h 15m
2026-06-27 HBTCT - Jun 27, 06:19 UTCJun 27, 07:39 UTC1h 20m
2026-06-27 HBTCT - Jun 27, 04:54 UTCJun 27, 05:44 UTC50m
2026-06-26 HBTCT - Jun 26, 17:04 UTCJun 26, 17:50 UTC45m
2026-06-26 HBTCT - Jun 26, 13:04 UTCJun 26, 15:15 UTC2h 10m
2026-06-25 HBTCT - Jun 25, 18:39 UTCJun 25, 19:34 UTC55m
2026-06-20 HBTCT - Jun 20, 16:44 UTCJun 20, 18:04 UTC1h 20m
2026-06-20 HBTCT - Jun 20, 13:59 UTCJun 20, 14:29 UTC30m
2026-06-20 HBTCT - Jun 20, 12:09 UTCJun 20, 12:50 UTC40m
2026-06-20 HBTCT - Jun 20, 08:09 UTCJun 20, 09:29 UTC1h 20m
2026-06-17 HBTCT - Jun 17, 18:55 UTCJun 17, 19:10 UTC15m
2026-06-17 HBTCT - Jun 17, 15:50 UTCJun 17, 16:05 UTC15m
2026-06-17 HBTCT - Jun 17, 12:25 UTCJun 17, 13:25 UTC1h 0m
2026-06-17 HBTCT - Jun 17, 10:40 UTCJun 17, 11:05 UTC25m
2026-06-17 HBTCT - Jun 17, 07:25 UTCJun 17, 08:15 UTC50m
2026-06-12 HBTCT - Jun 12, 16:35 UTCJun 12, 16:55 UTC20m

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

Mode-S 4B3273 frequently asked

What is Mode-S code 4B3273?
4B3273 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-TCT.
Where is Mode-S 4B3273 registered?
Mode-S code 4B3273 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B3273 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 4B3273, octal 22631163, decimal 4,928,115.
What flights does 4B3273 operate?
Mode-S 4B3273 has broadcast 2 distinct callsigns, including HBTCT, THY4BZ.