Apparatus

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sensors Mode-S transponder

49C3D2

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-CUS77

Hex
49C3D2
Octal
22341722
Decimal
4,834,258
Country
CZ
Tail
OK-CUS77
Type
WT9
No current signal · last broadcast 1d ago
Flights observed
79
Distinct callsigns
1
Country
CZ
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 49C3D2.

Country allocation

The ICAO 24-bit address 49C3D2 falls within the block assigned to Czech Republic (CZ) by ICAO Annex 10, Volume III. Every aircraft registered in Czech Republic 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
OKCUS77 - 79 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-08 OKCUS77 - Jun 8, 12:25 UTCJun 8, 13:10 UTC45m
2026-06-07 OKCUS77 - Jun 7, 18:05 UTCJun 7, 19:25 UTC1h 20m
2026-06-07 OKCUS77 - Jun 7, 15:45 UTCJun 7, 17:25 UTC1h 40m
2026-06-07 OKCUS77 - Jun 7, 12:40 UTCJun 7, 13:15 UTC35m
2026-06-07 OKCUS77 - Jun 7, 09:25 UTCJun 7, 10:00 UTC35m
2026-06-07 OKCUS77 - Jun 7, 08:55 UTCJun 7, 09:15 UTC20m
2026-06-06 OKCUS77 - Jun 6, 14:59 UTCJun 6, 15:34 UTC35m
2026-06-06 OKCUS77 - Jun 6, 13:54 UTCJun 6, 14:20 UTC25m
2026-06-06 OKCUS77 - Jun 6, 09:24 UTCJun 6, 09:55 UTC30m
2026-06-04 OKCUS77 - Jun 4, 12:30 UTCJun 4, 13:20 UTC50m
2026-06-04 OKCUS77 - Jun 4, 10:15 UTCJun 4, 11:05 UTC50m
2026-06-04 OKCUS77 - Jun 4, 05:55 UTCJun 4, 07:20 UTC1h 25m
2026-06-02 OKCUS77 - Jun 2, 14:15 UTCJun 2, 15:00 UTC45m
2026-06-02 OKCUS77 - Jun 2, 12:50 UTCJun 2, 13:20 UTC30m
2026-06-02 OKCUS77 - Jun 2, 07:40 UTCJun 2, 08:10 UTC30m
2026-06-01 OKCUS77 - Jun 1, 15:20 UTCJun 1, 15:40 UTC20m
2026-05-30 OKCUS77 - May 30, 17:10 UTCMay 30, 17:55 UTC45m
2026-05-30 OKCUS77 - May 30, 11:20 UTCMay 30, 12:15 UTC55m
2026-05-29 OKCUS77 - May 29, 08:25 UTCMay 29, 08:45 UTC20m
2026-05-29 OKCUS77 - May 29, 06:35 UTCMay 29, 06:55 UTC20m
2026-05-28 OKCUS77 - May 28, 19:00 UTCMay 28, 19:20 UTC20m
2026-05-28 OKCUS77 - May 28, 17:15 UTCMay 28, 17:40 UTC25m
2026-05-28 OKCUS77 - May 28, 16:15 UTCMay 28, 16:40 UTC25m
2026-05-28 OKCUS77 - May 28, 10:35 UTCMay 28, 10:55 UTC20m
2026-05-28 OKCUS77 - May 28, 08:50 UTCMay 28, 09:20 UTC30m
2026-05-28 OKCUS77 - May 28, 07:35 UTCMay 28, 08:40 UTC1h 5m
2026-05-26 OKCUS77 - May 26, 17:25 UTCMay 26, 18:50 UTC1h 25m
2026-05-26 OKCUS77 - May 26, 15:54 UTCMay 26, 16:24 UTC30m
2026-05-25 OKCUS77 - May 25, 13:30 UTCMay 25, 14:25 UTC55m
2026-05-25 OKCUS77 - May 25, 10:45 UTCMay 25, 12:05 UTC1h 20m
2026-05-25 OKCUS77 - May 25, 07:45 UTCMay 25, 08:30 UTC45m
2026-05-25 OKCUS77 - May 25, 07:10 UTCMay 25, 07:30 UTC20m
2026-05-17 OKCUS77 - May 17, 14:20 UTCMay 17, 15:40 UTC1h 20m
2026-05-17 OKCUS77 - May 17, 06:55 UTCMay 17, 07:40 UTC45m
2026-05-16 OKCUS77 - May 16, 15:25 UTCMay 16, 16:35 UTC1h 10m
2026-05-14 OKCUS77 - May 14, 14:25 UTCMay 14, 14:55 UTC30m
2026-05-14 OKCUS77 - May 14, 11:10 UTCMay 14, 11:25 UTC15m
2026-05-14 OKCUS77 - May 14, 08:50 UTCMay 14, 09:10 UTC20m
2026-05-13 OKCUS77 - May 13, 12:35 UTCMay 13, 14:00 UTC1h 25m
2026-05-13 OKCUS77 - May 13, 07:15 UTCMay 13, 08:00 UTC45m
2026-05-11 OKCUS77 - May 11, 10:40 UTCMay 11, 11:05 UTC25m
2026-05-11 OKCUS77 - May 11, 07:40 UTCMay 11, 08:05 UTC25m
2026-05-10 OKCUS77 - May 10, 17:49 UTCMay 10, 18:35 UTC45m
2026-05-10 OKCUS77 - May 10, 15:09 UTCMay 10, 15:39 UTC30m
2026-05-10 OKCUS77 - May 10, 09:50 UTCMay 10, 11:30 UTC1h 40m
2026-05-10 OKCUS77 - May 10, 08:00 UTCMay 10, 08:30 UTC30m
2026-05-10 OKCUS77 - May 10, 07:30 UTCMay 10, 07:40 UTC10m
2026-05-09 OKCUS77 - May 9, 17:55 UTCMay 9, 18:35 UTC40m
2026-05-09 OKCUS77 - May 9, 16:30 UTCMay 9, 16:50 UTC20m
2026-05-09 OKCUS77 - May 9, 12:05 UTCMay 9, 12:45 UTC40m

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 OK-CUS77 page for operator, model, and routing details .

Mode-S 49C3D2 frequently asked

What is Mode-S code 49C3D2?
49C3D2 is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-CUS77.
Where is Mode-S 49C3D2 registered?
Mode-S code 49C3D2 is allocated to Czech Republic (CZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 49C3D2 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 49C3D2, octal 22341722, decimal 4,834,258.
What flights does 49C3D2 operate?
Mode-S 49C3D2 has broadcast 1 distinct callsign, including OKCUS77.