Apparatus

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sensors Mode-S transponder

49D232

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-TSE · BOEING 737-800

Hex
49D232
Octal
22351062
Decimal
4,837,938
Country
CZ
Tail
OK-TSE
Type
B738
No current signal · last broadcast Jul 26, 18:05 UTC
Flights observed
184
Distinct callsigns
20
Country
CZ
Last broadcast
Jul 26, 18:05 UTC

Last known position

Most recent position reported by Mode-S 49D232.

Country allocation

The ICAO 24-bit address 49D232 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 20 distinct

Callsign Airline Flights Last seen
CRC222 - 30 2026-07-19
CRC225 - 28 2026-07-20
CRC223 - 27 2026-07-16
CRC224 - 26 2026-07-19
CRC312 Conair Aviation 13 2026-07-19
CRC307 Conair Aviation 12 2026-07-18
CRC306 - 12 2026-07-13
CRC310 - 10 2026-07-14
CRC311 Conair Aviation 6 2026-07-19
CRC202 Conair Aviation 6 2026-05-07
CRC313 Conair Aviation 4 2026-06-07
TVS144P - 1 2026-06-11
TVS143P - 1 2026-06-08
TVS134P - 1 2026-07-26
TVQ6143 Smart Wings 1 2026-06-08
TVQ6142 Smart Wings 1 2026-06-08
CRR206 - 1 2026-04-25
CRC307A - 1 2026-05-30
CRC207 Conair Aviation 1 2026-04-23
CRC206 Conair Aviation 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TVS134P - Jul 26, 14:55 UTCJul 26, 18:05 UTC3h 10m
2026-07-20 CRC1224 - Jul 20, 13:30 UTCJul 20, 16:55 UTC3h 25m
2026-07-20 CRC225 - Jul 20, 09:05 UTCJul 20, 09:15 UTC10m
2026-07-19 CRC224 - Jul 19, 16:50 UTCJul 19, 17:05 UTC15m
2026-07-19 CRC222 - Jul 19, 15:30 UTCJul 19, 15:55 UTC25m
2026-07-19 CRC312 DLA → NSI Jul 19, 09:20 UTCJul 19, 09:35 UTC15m
2026-07-19 CRC312 DLA → NSI Jul 19, 08:00 UTCJul 19, 08:20 UTC20m
2026-07-19 CRC311 PNR → DLA Jul 19, 01:20 UTCJul 19, 01:40 UTC20m
2026-07-18 CRC307 LBV → DLA Jul 18, 16:25 UTCJul 18, 16:35 UTC10m
2026-07-16 CRC223 - Jul 16, 14:35 UTCJul 16, 14:50 UTC15m
2026-07-16 CRC225 - Jul 16, 13:20 UTCJul 16, 13:30 UTC10m
2026-07-16 CRC224 - Jul 16, 10:10 UTCJul 16, 10:25 UTC15m
2026-07-16 CRC222 - Jul 16, 08:40 UTCJul 16, 09:00 UTC20m
2026-07-15 CRC223 - Jul 15, 15:10 UTCJul 15, 15:25 UTC15m
2026-07-15 CRC225 - Jul 15, 14:00 UTCJul 15, 14:15 UTC15m
2026-07-15 CRC224 - Jul 15, 10:40 UTCJul 15, 10:55 UTC15m
2026-07-15 CRC222 - Jul 15, 08:55 UTCJul 15, 09:20 UTC25m
2026-07-14 CRC310 - Jul 14, 19:50 UTCJul 14, 20:15 UTC25m
2026-07-14 CRC307 - Jul 14, 16:25 UTCJul 14, 16:35 UTC10m
2026-07-13 CRC307 - Jul 13, 23:10 UTCJul 13, 23:20 UTC10m
2026-07-13 CRC306 - Jul 13, 16:05 UTCJul 13, 16:15 UTC10m
2026-07-13 CRC223 - Jul 13, 13:30 UTCJul 13, 13:40 UTC10m
2026-07-13 CRC225 NSI → NSI Jul 13, 08:55 UTCJul 13, 12:05 UTC3h 10m
2026-07-11 CRC310 - Jul 11, 18:10 UTCJul 11, 23:25 UTC5h 15m
2026-07-11 CRC307 - Jul 11, 16:05 UTCJul 11, 16:15 UTC10m
2026-07-11 CRC306 - Jul 11, 08:20 UTCJul 11, 08:30 UTC10m
2026-07-10 CRC307 - Jul 10, 16:35 UTCJul 11, 00:15 UTC7h 41m
2026-07-10 CRC223 - Jul 10, 14:00 UTCJul 10, 14:15 UTC15m
2026-07-10 CRC225 - Jul 10, 12:20 UTCJul 10, 12:35 UTC15m
2026-07-10 CRC224 - Jul 10, 09:15 UTCJul 10, 09:30 UTC15m
2026-07-10 CRC222 - Jul 10, 07:35 UTCJul 10, 07:55 UTC20m
2026-07-09 CRC223 - Jul 9, 15:20 UTCJul 9, 15:25 UTC5m
2026-07-09 CRC225 - Jul 9, 14:00 UTCJul 9, 14:15 UTC15m
2026-07-09 CRC224 - Jul 9, 11:00 UTCJul 9, 11:10 UTC10m
2026-07-09 CRC222 - Jul 9, 09:25 UTCJul 9, 09:45 UTC20m
2026-07-08 CRC222 - Jul 8, 08:55 UTCJul 8, 09:15 UTC20m
2026-07-07 CRC311 - Jul 7, 22:35 UTCJul 7, 22:50 UTC15m
2026-07-07 CRC310 - Jul 7, 17:20 UTCJul 7, 17:40 UTC20m
2026-07-07 CRC307 - Jul 7, 15:20 UTCJul 7, 15:30 UTC10m
2026-07-07 CRC306 - Jul 7, 07:45 UTCJul 7, 08:00 UTC15m
2026-07-06 CRC224 - Jul 6, 09:20 UTCJul 6, 09:30 UTC10m
2026-07-06 CRC222 DLA → NSI Jul 6, 07:45 UTCJul 6, 08:05 UTC20m
2026-07-05 CRC223 - Jul 5, 22:10 UTCJul 5, 22:25 UTC15m
2026-07-05 CRC225 - Jul 5, 20:50 UTCJul 5, 21:15 UTC25m
2026-07-05 CRC224 - Jul 5, 17:20 UTCJul 5, 17:30 UTC10m
2026-07-05 CRC222 DLA → NSI Jul 5, 15:45 UTCJul 5, 16:05 UTC20m
2026-07-05 CRC312 - Jul 5, 09:35 UTCJul 5, 09:50 UTC15m
2026-07-05 CRC312 - Jul 5, 08:10 UTCJul 5, 08:30 UTC20m
2026-07-04 CRC311 - Jul 4, 23:45 UTCJul 5, 00:00 UTC15m
2026-07-04 CRC306 - Jul 4, 07:35 UTCJul 4, 07:50 UTC15m

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

Mode-S 49D232 frequently asked

What is Mode-S code 49D232?
49D232 is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-TSE.
Where is Mode-S 49D232 registered?
Mode-S code 49D232 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 49D232 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49D232, octal 22351062, decimal 4,837,938.
What flights does 49D232 operate?
Mode-S 49D232 has broadcast 20 distinct callsigns, including CRC222, CRC225, CRC223, CRC224, CRC312.