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sensors Mode-S transponder

49D124

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-TOC · CESSNA 172 Skyhawk

Hex
49D124
Octal
22350444
Decimal
4,837,668
Country
CZ
Tail
OK-TOC
Type
C172
Broadcasting now · callsign OKTOC · 6,050 ft
Flights observed
103
Distinct callsigns
1
Country
CZ
Last broadcast
1h ago

Current position

49D124 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 49D124 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
OKTOC - 103 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 OKTOC - Jul 18, 10:45 UTCJul 18, 11:00 UTC15m
2026-07-18 OKTOC - Jul 18, 07:35 UTCJul 18, 09:20 UTC1h 45m
2026-07-16 OKTOC - Jul 16, 14:29 UTCJul 16, 15:55 UTC1h 25m
2026-07-16 OKTOC - Jul 16, 09:55 UTCJul 16, 12:20 UTC2h 25m
2026-07-15 OKTOC - Jul 15, 16:20 UTCJul 15, 17:10 UTC50m
2026-07-15 OKTOC - Jul 15, 08:20 UTCJul 15, 11:10 UTC2h 50m
2026-07-13 OKTOC - Jul 13, 16:45 UTCJul 13, 17:25 UTC40m
2026-07-13 OKTOC - Jul 13, 14:30 UTCJul 13, 16:05 UTC1h 35m
2026-07-09 OKTOC - Jul 9, 11:50 UTCJul 9, 13:05 UTC1h 15m
2026-07-07 OKTOC - Jul 7, 05:25 UTCJul 7, 06:55 UTC1h 30m
2026-07-06 OKTOC - Jul 6, 09:00 UTCJul 6, 10:45 UTC1h 45m
2026-07-04 OKTOC - Jul 4, 06:45 UTCJul 4, 08:25 UTC1h 40m
2026-06-27 OKTOC - Jun 27, 08:44 UTCJun 27, 09:00 UTC15m
2026-06-27 OKTOC - Jun 27, 06:50 UTCJun 27, 07:39 UTC50m
2026-06-26 OKTOC - Jun 26, 17:15 UTCJun 26, 18:39 UTC1h 25m
2026-06-25 OKTOC - Jun 25, 06:40 UTCJun 25, 07:49 UTC1h 10m
2026-06-24 OKTOC - Jun 24, 06:59 UTCJun 24, 07:54 UTC55m
2026-06-23 OKTOC - Jun 23, 09:59 UTCJun 23, 10:55 UTC55m
2026-06-23 OKTOC - Jun 23, 07:29 UTCJun 23, 08:39 UTC1h 10m
2026-06-22 OKTOC - Jun 22, 08:19 UTCJun 22, 08:50 UTC30m
2026-06-21 OKTOC - Jun 21, 08:15 UTCJun 21, 09:29 UTC1h 15m
2026-06-21 OKTOC - Jun 21, 07:25 UTCJun 21, 07:59 UTC35m
2026-06-20 OKTOC - Jun 20, 16:09 UTCJun 20, 16:19 UTC10m
2026-06-20 OKTOC - Jun 20, 14:59 UTCJun 20, 15:29 UTC30m
2026-06-19 OKTOC - Jun 19, 14:59 UTCJun 19, 15:39 UTC40m
2026-06-19 OKTOC - Jun 19, 13:59 UTCJun 19, 14:09 UTC10m
2026-06-18 OKTOC - Jun 18, 17:10 UTCJun 18, 18:10 UTC1h 0m
2026-06-18 OKTOC - Jun 18, 12:40 UTCJun 18, 13:35 UTC55m
2026-06-14 OKTOC - Jun 14, 09:55 UTCJun 14, 12:05 UTC2h 10m
2026-06-14 OKTOC - Jun 14, 07:15 UTCJun 14, 09:10 UTC1h 55m
2026-06-12 OKTOC - Jun 12, 08:20 UTCJun 12, 10:10 UTC1h 50m
2026-06-11 OKTOC - Jun 11, 12:05 UTCJun 11, 12:20 UTC15m
2026-06-11 OKTOC - Jun 11, 10:00 UTCJun 11, 10:35 UTC35m
2026-06-07 OKTOC - Jun 7, 16:50 UTCJun 7, 18:15 UTC1h 25m
2026-06-07 OKTOC - Jun 7, 13:35 UTCJun 7, 15:55 UTC2h 20m
2026-06-07 OKTOC - Jun 7, 08:30 UTCJun 7, 09:30 UTC1h 0m
2026-06-06 OKTOC - Jun 6, 17:15 UTCJun 6, 17:29 UTC15m
2026-06-06 OKTOC - Jun 6, 13:44 UTCJun 6, 16:39 UTC2h 55m
2026-06-06 OKTOC - Jun 6, 11:00 UTCJun 6, 13:00 UTC2h 0m
2026-06-06 OKTOC - Jun 6, 09:09 UTCJun 6, 10:14 UTC1h 5m
2026-06-04 OKTOC - Jun 4, 11:40 UTCJun 4, 13:15 UTC1h 35m
2026-06-04 OKTOC - Jun 4, 10:20 UTCJun 4, 11:05 UTC45m
2026-05-28 OKTOC - May 28, 09:15 UTCMay 28, 10:45 UTC1h 30m
2026-05-28 OKTOC - May 28, 04:10 UTCMay 28, 05:40 UTC1h 30m
2026-05-26 OKTOC - May 26, 06:25 UTCMay 26, 06:59 UTC35m
2026-05-25 OKTOC - May 25, 17:10 UTCMay 25, 18:00 UTC50m
2026-05-24 OKTOC - May 24, 10:50 UTCMay 24, 12:05 UTC1h 15m
2026-05-22 OKTOC - May 22, 13:20 UTCMay 22, 13:45 UTC25m
2026-05-22 OKTOC - May 22, 11:40 UTCMay 22, 12:20 UTC40m
2026-05-21 OKTOC - May 21, 14:25 UTCMay 21, 15:10 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-TOC page for operator, model, and routing details .

Mode-S 49D124 frequently asked

What is Mode-S code 49D124?
49D124 is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-TOC.
Where is Mode-S 49D124 registered?
Mode-S code 49D124 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 49D124 broadcasting right now?
Yes. Mode-S 49D124 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49D124, octal 22350444, decimal 4,837,668.
What flights does 49D124 operate?
Mode-S 49D124 has broadcast 1 distinct callsign, including OKTOC.