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sensors Mode-S transponder

49D1AA

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-PRG · PILATUS PC-12

Hex
49D1AA
Octal
22350652
Decimal
4,837,802
Country
CZ
Tail
OK-PRG
Type
PC12
No current signal · last broadcast 5h ago
Flights observed
88
Distinct callsigns
1
Country
CZ
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 49D1AA.

Country allocation

The ICAO 24-bit address 49D1AA 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
OKNGX - 88 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 OKNGX POZ → WMI Jul 14, 05:30 UTCJul 14, 06:15 UTC45m
2026-07-13 OKNGX PRG → POZ Jul 13, 18:10 UTCJul 13, 19:00 UTC50m
2026-07-08 OKNGX - Jul 8, 18:50 UTCJul 8, 20:10 UTC1h 20m
2026-07-08 OKNGX - Jul 8, 17:25 UTCJul 8, 18:20 UTC55m
2026-07-08 OKNGX - Jul 8, 14:10 UTCJul 8, 14:40 UTC30m
2026-07-08 OKNGX - Jul 8, 09:25 UTCJul 8, 10:20 UTC55m
2026-07-08 OKNGX - Jul 8, 05:40 UTCJul 8, 07:05 UTC1h 25m
2026-07-07 OKNGX - Jul 7, 15:10 UTCJul 7, 16:45 UTC1h 35m
2026-07-07 OKNGX - Jul 7, 10:25 UTCJul 7, 10:35 UTC10m
2026-07-01 OKNGX - Jul 1, 09:05 UTCJul 1, 10:25 UTC1h 20m
2026-07-01 OKNGX PRG → DUS Jul 1, 06:20 UTCJul 1, 07:50 UTC1h 30m
2026-06-30 OKNGX BRQ → PRG Jun 30, 11:55 UTCJun 30, 12:30 UTC35m
2026-06-29 OKNGX - Jun 29, 19:49 UTCJun 29, 20:09 UTC20m
2026-06-29 OKNGX - Jun 29, 17:05 UTCJun 29, 17:49 UTC45m
2026-06-25 OKNGX - Jun 25, 11:59 UTCJun 25, 12:10 UTC10m
2026-06-24 OKNGX - Jun 24, 14:15 UTCJun 24, 15:00 UTC45m
2026-06-24 OKNGX - Jun 24, 12:54 UTCJun 24, 13:40 UTC45m
2026-06-24 OKNGX - Jun 24, 05:09 UTCJun 24, 05:54 UTC45m
2026-06-23 OKNGX - Jun 23, 15:09 UTCJun 23, 16:29 UTC1h 20m
2026-06-23 OKNGX - Jun 23, 10:04 UTCJun 23, 11:04 UTC1h 0m
2026-06-23 OKNGX - Jun 23, 06:09 UTCJun 23, 07:25 UTC1h 15m
2026-06-22 OKNGX PRG → POZ Jun 22, 18:15 UTCJun 22, 19:05 UTC50m
2026-06-21 OKNGX VIE → PRG Jun 21, 18:14 UTCJun 21, 19:00 UTC45m
2026-06-16 OKNGX - Jun 16, 17:24 UTCJun 16, 18:35 UTC1h 10m
2026-06-16 OKNGX - Jun 16, 16:00 UTCJun 16, 16:45 UTC45m
2026-06-16 OKNGX - Jun 16, 07:15 UTCJun 16, 07:25 UTC10m
2026-06-16 OKNGX POZ → WMI Jun 16, 04:55 UTCJun 16, 05:50 UTC55m
2026-06-15 OKNGX - Jun 15, 17:15 UTCJun 15, 18:04 UTC50m
2026-06-14 OKNGX VIE → PRG Jun 14, 18:15 UTCJun 14, 19:10 UTC55m
2026-06-12 OKNGX POZ → VIE Jun 12, 18:40 UTCJun 12, 19:45 UTC1h 5m
2026-06-12 OKNGX - Jun 12, 17:40 UTCJun 12, 18:20 UTC40m
2026-06-12 OKNGX - Jun 12, 13:10 UTCJun 12, 13:20 UTC10m
2026-06-11 OKNGX - Jun 11, 09:55 UTCJun 11, 10:05 UTC10m
2026-06-11 OKNGX POZ → WMI Jun 11, 05:05 UTCJun 11, 05:55 UTC50m
2026-06-09 OKNGX - Jun 9, 09:25 UTCJun 9, 11:55 UTC2h 30m
2026-06-09 OKNGX - Jun 9, 07:00 UTCJun 9, 08:40 UTC1h 40m
2026-06-08 OKNGX PRG → BTS Jun 8, 16:30 UTCJun 8, 17:15 UTC45m
2026-06-07 OKNGX VIE → PRG Jun 7, 18:10 UTCJun 7, 19:00 UTC50m
2026-06-07 OKNGX PRG → VIE Jun 7, 16:55 UTCJun 7, 17:40 UTC45m
2026-06-02 OKNGX - Jun 2, 17:20 UTCJun 2, 18:10 UTC50m
2026-06-02 OKNGX - Jun 2, 16:00 UTCJun 2, 16:50 UTC50m
2026-06-02 OKNGX - Jun 2, 05:00 UTCJun 2, 05:40 UTC40m
2026-06-01 OKNGX - Jun 1, 18:50 UTCJun 1, 19:30 UTC40m
2026-06-01 OKNGX WVN → BER Jun 1, 16:05 UTCJun 1, 18:20 UTC2h 15m
2026-06-01 OKNGX - Jun 1, 05:40 UTCJun 1, 08:10 UTC2h 30m
2026-06-01 OKNGX PRG → BER Jun 1, 04:10 UTCJun 1, 04:55 UTC45m
2026-05-31 OKNGX VIE → PRG May 31, 18:15 UTCMay 31, 19:05 UTC50m
2026-05-28 OKNGX - May 28, 16:30 UTCMay 28, 17:45 UTC1h 15m
2026-05-28 OKNGX - May 28, 15:10 UTCMay 28, 16:10 UTC1h 0m
2026-05-28 OKNGX - May 28, 04:15 UTCMay 28, 05:00 UTC45m

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

Mode-S 49D1AA frequently asked

What is Mode-S code 49D1AA?
49D1AA is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-PRG.
Where is Mode-S 49D1AA registered?
Mode-S code 49D1AA 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 49D1AA broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49D1AA, octal 22350652, decimal 4,837,802.
What flights does 49D1AA operate?
Mode-S 49D1AA has broadcast 1 distinct callsign, including OKNGX.