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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 6h ago
Flights observed
138
Distinct callsigns
1
Country
CZ
Last broadcast
6h 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 - 138 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 OKCUS77 - Jul 24, 17:25 UTCJul 24, 18:40 UTC1h 15m
2026-07-24 OKCUS77 - Jul 24, 11:05 UTCJul 24, 11:40 UTC35m
2026-07-24 OKCUS77 - Jul 24, 09:35 UTCJul 24, 10:00 UTC25m
2026-07-23 OKCUS77 - Jul 23, 14:55 UTCJul 23, 15:40 UTC45m
2026-07-23 OKCUS77 - Jul 23, 11:40 UTCJul 23, 11:55 UTC15m
2026-07-23 OKCUS77 - Jul 23, 07:00 UTCJul 23, 07:15 UTC15m
2026-07-22 OKCUS77 - Jul 22, 18:25 UTCJul 22, 18:55 UTC30m
2026-07-20 OKCUS77 - Jul 20, 10:30 UTCJul 20, 11:00 UTC30m
2026-07-20 OKCUS77 - Jul 20, 05:40 UTCJul 20, 06:35 UTC55m
2026-07-19 OKCUS77 - Jul 19, 17:05 UTCJul 19, 18:00 UTC55m
2026-07-19 OKCUS77 - Jul 19, 16:10 UTCJul 19, 16:50 UTC40m
2026-07-18 OKCUS77 - Jul 18, 10:45 UTCJul 18, 11:05 UTC20m
2026-07-18 OKCUS77 - Jul 18, 06:50 UTCJul 18, 08:10 UTC1h 20m
2026-07-16 OKCUS77 - Jul 16, 17:35 UTCJul 16, 18:59 UTC1h 25m
2026-07-16 OKCUS77 - Jul 16, 15:00 UTCJul 16, 16:05 UTC1h 5m
2026-07-15 OKCUS77 - Jul 15, 17:40 UTCJul 15, 18:40 UTC1h 0m
2026-07-15 OKCUS77 - Jul 15, 11:25 UTCJul 15, 12:00 UTC35m
2026-07-13 OKCUS77 - Jul 13, 17:55 UTCJul 13, 18:20 UTC25m
2026-07-13 OKCUS77 - Jul 13, 05:31 UTCJul 13, 06:30 UTC1h 0m
2026-07-12 OKCUS77 - Jul 12, 17:40 UTCJul 12, 18:55 UTC1h 15m
2026-07-11 OKCUS77 - Jul 11, 05:55 UTCJul 11, 07:15 UTC1h 20m
2026-07-10 OKCUS77 - Jul 10, 09:35 UTCJul 10, 10:05 UTC30m
2026-07-10 OKCUS77 - Jul 10, 05:30 UTCJul 10, 06:30 UTC1h 0m
2026-07-09 OKCUS77 - Jul 9, 16:50 UTCJul 9, 17:45 UTC55m
2026-07-09 OKCUS77 - Jul 9, 15:45 UTCJul 9, 16:10 UTC25m
2026-07-09 OKCUS77 - Jul 9, 07:10 UTCJul 9, 07:25 UTC15m
2026-07-08 OKCUS77 - Jul 8, 09:15 UTCJul 8, 09:35 UTC20m
2026-07-07 OKCUS77 - Jul 7, 15:45 UTCJul 7, 16:05 UTC20m
2026-07-07 OKCUS77 - Jul 7, 12:10 UTCJul 7, 13:55 UTC1h 45m
2026-07-07 OKCUS77 - Jul 7, 11:40 UTCJul 7, 12:00 UTC20m
2026-07-02 OKCUS77 - Jul 2, 15:40 UTCJul 2, 16:25 UTC45m
2026-07-02 OKCUS77 - Jul 2, 05:55 UTCJul 2, 06:51 UTC56m
2026-06-30 OKCUS77 - Jun 30, 13:15 UTCJun 30, 13:30 UTC15m
2026-06-30 OKCUS77 - Jun 30, 12:20 UTCJun 30, 13:10 UTC50m
2026-06-30 OKCUS77 - Jun 30, 10:40 UTCJun 30, 11:05 UTC25m
2026-06-30 OKCUS77 - Jun 30, 10:15 UTCJun 30, 10:35 UTC20m
2026-06-26 OKCUS77 - Jun 26, 14:59 UTCJun 26, 16:09 UTC1h 10m
2026-06-24 OKCUS77 - Jun 24, 13:10 UTCJun 24, 13:50 UTC40m
2026-06-24 OKCUS77 - Jun 24, 08:30 UTCJun 24, 09:24 UTC55m
2026-06-23 OKCUS77 - Jun 23, 17:30 UTCJun 23, 17:50 UTC20m
2026-06-23 OKCUS77 - Jun 23, 13:24 UTCJun 23, 13:50 UTC25m
2026-06-23 OKCUS77 - Jun 23, 12:49 UTCJun 23, 13:09 UTC20m
2026-06-22 OKCUS77 - Jun 22, 16:54 UTCJun 22, 17:20 UTC25m
2026-06-22 OKCUS77 - Jun 22, 14:05 UTCJun 22, 14:29 UTC25m
2026-06-20 OKCUS77 - Jun 20, 17:24 UTCJun 20, 19:29 UTC2h 5m
2026-06-20 OKCUS77 - Jun 20, 12:50 UTCJun 20, 15:44 UTC2h 55m
2026-06-20 OKCUS77 - Jun 20, 08:29 UTCJun 20, 11:05 UTC2h 35m
2026-06-19 OKCUS77 - Jun 19, 18:14 UTCJun 19, 19:14 UTC1h 0m
2026-06-19 OKCUS77 - Jun 19, 14:49 UTCJun 19, 15:19 UTC30m
2026-06-18 OKCUS77 - Jun 18, 16:30 UTCJun 18, 16:50 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 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 6h 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.