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sensors Mode-S transponder

49D3AC

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-AST · CESSNA 560XL Citation XLS

Hex
49D3AC
Octal
22351654
Decimal
4,838,316
Country
CZ
Tail
OK-AST
Type
C56X
Broadcasting now · callsign BOH711 · 21,000 ft
Flights observed
121
Distinct callsigns
4
Country
CZ
Last broadcast
21h ago

Current position

49D3AC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 49D3AC 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 4 distinct

Callsign Airline Flights Last seen
BOH711 - 56 2026-07-13
BOH712 - 44 2026-07-12
BOH713 - 16 2026-07-04
BOH714 - 5 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BOH711 - Jul 13, 11:20 UTCJul 13, 14:05 UTC2h 45m
2026-07-12 BOH712 - Jul 12, 17:15 UTCJul 12, 20:05 UTC2h 50m
2026-07-12 BOH711 - Jul 12, 14:01 UTCJul 12, 16:15 UTC2h 15m
2026-07-11 BOH712 - Jul 11, 13:10 UTCJul 11, 15:45 UTC2h 35m
2026-07-11 BOH711 - Jul 11, 11:05 UTCJul 11, 11:45 UTC40m
2026-07-10 BOH712 SOU → PRG Jul 10, 17:40 UTCJul 10, 19:15 UTC1h 35m
2026-07-10 BOH711 - Jul 10, 05:10 UTCJul 10, 07:00 UTC1h 50m
2026-07-08 BOH712 - Jul 8, 12:50 UTCJul 8, 13:45 UTC55m
2026-07-08 BOH711 - Jul 8, 08:55 UTCJul 8, 11:10 UTC2h 15m
2026-07-07 BOH712 - Jul 7, 12:25 UTCJul 7, 13:55 UTC1h 30m
2026-07-07 BOH711 - Jul 7, 10:05 UTCJul 7, 11:10 UTC1h 5m
2026-07-06 BOH712 - Jul 6, 09:15 UTCJul 6, 12:05 UTC2h 50m
2026-07-06 BOH711 - Jul 6, 06:30 UTCJul 6, 07:30 UTC1h 0m
2026-07-05 BOH712 - Jul 5, 09:25 UTCJul 5, 12:30 UTC3h 5m
2026-07-05 BOH711 BQH → AMS Jul 5, 07:45 UTCJul 5, 08:40 UTC55m
2026-07-04 BOH714 PSA → BQH Jul 4, 17:45 UTCJul 4, 19:40 UTC1h 55m
2026-07-04 BOH713 NCE → PSA Jul 4, 15:35 UTCJul 4, 16:05 UTC30m
2026-07-04 BOH712 - Jul 4, 12:05 UTCJul 4, 14:00 UTC1h 55m
2026-07-04 BOH711 - Jul 4, 09:25 UTCJul 4, 11:10 UTC1h 45m
2026-07-03 BOH714 - Jul 3, 16:25 UTCJul 3, 18:10 UTC1h 45m
2026-07-03 BOH713 - Jul 3, 13:00 UTCJul 3, 14:30 UTC1h 30m
2026-07-03 BOH712 - Jul 3, 10:00 UTCJul 3, 11:40 UTC1h 40m
2026-07-03 BOH711 - Jul 3, 08:05 UTCJul 3, 08:50 UTC45m
2026-07-01 BOH713 - Jul 1, 17:35 UTCJul 1, 18:20 UTC45m
2026-07-01 BOH712 AMS → LBG Jul 1, 15:20 UTCJul 1, 16:10 UTC50m
2026-07-01 BOH711 - Jul 1, 13:35 UTCJul 1, 14:45 UTC1h 10m
2026-06-30 BOH713 - Jun 30, 17:05 UTCJun 30, 18:20 UTC1h 15m
2026-06-30 BOH712 - Jun 30, 05:15 UTCJun 30, 06:15 UTC1h 0m
2026-06-30 BOH711 - Jun 30, 03:50 UTCJun 30, 04:20 UTC30m
2026-06-29 BOH713 - Jun 29, 11:35 UTCJun 29, 13:09 UTC1h 35m
2026-06-29 BOH712 - Jun 29, 10:20 UTCJun 29, 10:40 UTC20m
2026-06-29 BOH711 - Jun 29, 07:55 UTCJun 29, 08:54 UTC1h 0m
2026-06-27 BOH712 LUX → CFR Jun 27, 09:44 UTCJun 27, 10:34 UTC50m
2026-06-27 BOH711 - Jun 27, 08:29 UTCJun 27, 09:19 UTC50m
2026-06-25 BOH713 - Jun 25, 17:39 UTCJun 25, 18:55 UTC1h 15m
2026-06-25 BOH712 - Jun 25, 07:45 UTCJun 25, 08:50 UTC1h 5m
2026-06-25 BOH711 BQH → STN Jun 25, 06:09 UTCJun 25, 06:40 UTC30m
2026-06-23 BOH712 - Jun 23, 13:39 UTCJun 23, 14:15 UTC35m
2026-06-23 BOH711 - Jun 23, 10:35 UTCJun 23, 12:20 UTC1h 45m
2026-06-22 BOH713 - Jun 22, 18:19 UTCJun 22, 18:40 UTC20m
2026-06-22 BOH712 - Jun 22, 15:35 UTCJun 22, 17:20 UTC1h 45m
2026-06-22 BOH711 - Jun 22, 12:44 UTCJun 22, 14:29 UTC1h 45m
2026-06-21 BOH711 - Jun 21, 09:24 UTCJun 21, 11:44 UTC2h 20m
2026-06-20 BOH711 - Jun 20, 15:04 UTCJun 20, 17:10 UTC2h 5m
2026-06-18 BOH711 - Jun 18, 17:00 UTCJun 18, 18:40 UTC1h 40m
2026-06-17 BOH712 IBZ → LBG Jun 17, 19:45 UTCJun 17, 21:30 UTC1h 45m
2026-06-17 BOH711 CAT → IBZ Jun 17, 16:30 UTCJun 17, 18:00 UTC1h 30m
2026-06-14 BOH712 AMS → CAT Jun 14, 18:15 UTCJun 14, 21:05 UTC2h 50m
2026-06-14 BOH711 MAN → AMS Jun 14, 16:15 UTCJun 14, 17:10 UTC55m
2026-06-13 BOH712 - Jun 13, 10:30 UTCJun 13, 13:15 UTC2h 45m

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

Mode-S 49D3AC frequently asked

What is Mode-S code 49D3AC?
49D3AC is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-AST.
Where is Mode-S 49D3AC registered?
Mode-S code 49D3AC 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 49D3AC broadcasting right now?
Yes. Mode-S 49D3AC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49D3AC, octal 22351654, decimal 4,838,316.
What flights does 49D3AC operate?
Mode-S 49D3AC has broadcast 4 distinct callsigns, including BOH711, BOH712, BOH713, BOH714.