Apparatus

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sensors Mode-S transponder

498B32

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-BYR · BELL 412

Hex
498B32
Octal
22305462
Decimal
4,819,762
Country
CZ
Tail
OK-BYR
Type
B412
No current signal · last broadcast 1d ago
Flights observed
124
Distinct callsigns
1
Country
CZ
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 498B32.

Country allocation

The ICAO 24-bit address 498B32 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
OKBYR - 124 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 OKBYR PRG → PRG Jul 16, 07:20 UTCJul 16, 09:30 UTC2h 10m
2026-07-15 OKBYR - Jul 15, 11:10 UTCJul 15, 11:30 UTC20m
2026-07-15 OKBYR - Jul 15, 09:30 UTCJul 15, 10:10 UTC40m
2026-07-14 OKBYR - Jul 14, 09:35 UTCJul 14, 10:30 UTC55m
2026-07-14 OKBYR - Jul 14, 07:35 UTCJul 14, 07:45 UTC10m
2026-07-07 OKBYR - Jul 7, 09:35 UTCJul 7, 11:00 UTC1h 25m
2026-07-07 OKBYR - Jul 7, 07:55 UTCJul 7, 08:10 UTC15m
2026-07-04 OKBYR PRG → PRG Jul 4, 05:10 UTCJul 4, 06:45 UTC1h 35m
2026-07-02 OKBYR PRG → PRG Jul 2, 12:10 UTCJul 2, 12:45 UTC35m
2026-06-30 OKBYR - Jun 30, 10:05 UTCJun 30, 10:30 UTC25m
2026-06-30 OKBYR - Jun 30, 07:35 UTCJun 30, 08:00 UTC25m
2026-06-29 OKBYR PRG → PRG Jun 29, 12:09 UTCJun 29, 12:45 UTC35m
2026-06-22 OKBYR - Jun 22, 09:14 UTCJun 22, 11:09 UTC1h 55m
2026-06-22 OKBYR - Jun 22, 08:00 UTCJun 22, 08:40 UTC40m
2026-06-22 OKBYR - Jun 22, 06:25 UTCJun 22, 07:00 UTC35m
2026-06-21 OKBYR - Jun 21, 06:44 UTCJun 21, 07:20 UTC35m
2026-06-20 OKBYR - Jun 20, 11:49 UTCJun 20, 12:09 UTC20m
2026-06-20 OKBYR - Jun 20, 10:20 UTCJun 20, 10:49 UTC30m
2026-06-20 OKBYR - Jun 20, 08:34 UTCJun 20, 09:05 UTC30m
2026-06-19 OKBYR PRG → PRG Jun 19, 12:19 UTCJun 19, 13:50 UTC1h 30m
2026-06-19 OKBYR - Jun 19, 08:14 UTCJun 19, 09:04 UTC50m
2026-06-18 OKBYR - Jun 18, 14:45 UTCJun 18, 15:10 UTC25m
2026-06-18 OKBYR - Jun 18, 13:20 UTCJun 18, 14:10 UTC50m
2026-06-18 OKBYR - Jun 18, 09:15 UTCJun 18, 10:30 UTC1h 15m
2026-06-18 OKBYR - Jun 18, 08:00 UTCJun 18, 08:30 UTC30m
2026-06-18 OKBYR - Jun 18, 06:35 UTCJun 18, 07:10 UTC35m
2026-06-17 OKBYR PRG → PRG Jun 17, 17:10 UTCJun 17, 17:20 UTC10m
2026-06-17 OKBYR - Jun 17, 14:15 UTCJun 17, 14:35 UTC20m
2026-06-17 OKBYR - Jun 17, 13:05 UTCJun 17, 13:15 UTC10m
2026-06-17 OKBYR - Jun 17, 09:30 UTCJun 17, 10:20 UTC50m
2026-06-17 OKBYR - Jun 17, 08:25 UTCJun 17, 08:55 UTC30m
2026-06-17 OKBYR - Jun 17, 07:40 UTCJun 17, 07:55 UTC15m
2026-06-16 OKBYR PRG → PRG Jun 16, 15:40 UTCJun 16, 16:39 UTC1h 0m
2026-06-16 OKBYR - Jun 16, 09:40 UTCJun 16, 10:00 UTC20m
2026-06-16 OKBYR - Jun 16, 07:40 UTCJun 16, 08:05 UTC25m
2026-06-15 OKBYR - Jun 15, 07:35 UTCJun 15, 10:00 UTC2h 25m
2026-06-14 OKBYR - Jun 14, 08:40 UTCJun 14, 10:35 UTC1h 55m
2026-06-14 OKBYR - Jun 14, 07:35 UTCJun 14, 08:05 UTC30m
2026-06-11 OKBYR - Jun 11, 10:40 UTCJun 11, 12:25 UTC1h 45m
2026-06-11 OKBYR - Jun 11, 07:30 UTCJun 11, 07:55 UTC25m
2026-06-10 OKBYR - Jun 10, 17:30 UTCJun 10, 17:40 UTC10m
2026-06-10 OKBYR - Jun 10, 16:20 UTCJun 10, 16:40 UTC20m
2026-06-10 OKBYR - Jun 10, 09:20 UTCJun 10, 10:10 UTC50m
2026-06-10 OKBYR - Jun 10, 08:25 UTCJun 10, 08:50 UTC25m
2026-06-10 OKBYR - Jun 10, 07:40 UTCJun 10, 07:55 UTC15m
2026-06-09 OKBYR - Jun 9, 08:00 UTCJun 9, 10:15 UTC2h 15m
2026-06-08 OKBYR - Jun 8, 07:00 UTCJun 8, 11:50 UTC4h 50m
2026-06-06 OKBYR - Jun 6, 16:04 UTCJun 6, 16:30 UTC25m
2026-06-06 OKBYR - Jun 6, 13:49 UTCJun 6, 14:04 UTC15m
2026-06-06 OKBYR - Jun 6, 12:54 UTCJun 6, 13:09 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-BYR page for operator, model, and routing details .

Mode-S 498B32 frequently asked

What is Mode-S code 498B32?
498B32 is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-BYR.
Where is Mode-S 498B32 registered?
Mode-S code 498B32 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 498B32 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 498B32, octal 22305462, decimal 4,819,762.
What flights does 498B32 operate?
Mode-S 498B32 has broadcast 1 distinct callsign, including OKBYR.