Apparatus

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sensors Mode-S transponder

49D114

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-SEF · ROBINSON R-44 Raven

Hex
49D114
Octal
22350424
Decimal
4,837,652
Country
CZ
Tail
OK-SEF
Type
R44
No current signal · last broadcast 28d ago
Flights observed
61
Distinct callsigns
1
Country
CZ
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S 49D114.

Country allocation

The ICAO 24-bit address 49D114 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
OKSEF - 61 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 OKSEF - Jul 24, 15:15 UTCJul 24, 15:30 UTC15m
2026-07-24 OKSEF - Jul 24, 14:50 UTCJul 24, 15:10 UTC20m
2026-07-24 OKSEF - Jul 24, 14:40 UTCJul 24, 14:45 UTC5m
2026-07-24 OKSEF - Jul 24, 13:25 UTCJul 24, 13:30 UTC5m
2026-07-24 OKSEF - Jul 24, 12:40 UTCJul 24, 12:50 UTC10m
2026-07-23 OKSEF - Jul 23, 16:00 UTCJul 23, 18:00 UTC2h 0m
2026-07-23 OKSEF - Jul 23, 13:25 UTCJul 23, 14:05 UTC40m
2026-07-23 OKSEF - Jul 23, 11:25 UTCJul 23, 11:50 UTC25m
2026-07-22 OKSEF - Jul 22, 12:25 UTCJul 22, 15:40 UTC3h 15m
2026-07-22 OKSEF - Jul 22, 11:15 UTCJul 22, 12:00 UTC45m
2026-07-21 OKSEF - Jul 21, 18:25 UTCJul 21, 18:45 UTC20m
2026-07-21 OKSEF - Jul 21, 16:35 UTCJul 21, 16:50 UTC15m
2026-07-21 OKSEF - Jul 21, 14:55 UTCJul 21, 15:45 UTC50m
2026-07-21 OKSEF - Jul 21, 12:00 UTCJul 21, 12:25 UTC25m
2026-07-21 OKSEF - Jul 21, 10:20 UTCJul 21, 10:40 UTC20m
2026-07-20 OKSEF - Jul 20, 15:25 UTCJul 20, 16:20 UTC55m
2026-07-17 OKSEF - Jul 17, 15:15 UTCJul 17, 15:29 UTC15m
2026-07-17 OKSEF - Jul 17, 14:44 UTCJul 17, 15:10 UTC25m
2026-07-16 OKSEF - Jul 16, 14:50 UTCJul 16, 16:49 UTC2h 0m
2026-07-16 OKSEF - Jul 16, 10:25 UTCJul 16, 12:14 UTC1h 50m
2026-07-15 OKSEF - Jul 15, 14:40 UTCJul 15, 15:05 UTC25m
2026-07-15 OKSEF - Jul 15, 13:50 UTCJul 15, 14:30 UTC40m
2026-07-15 OKSEF - Jul 15, 12:00 UTCJul 15, 12:45 UTC45m
2026-07-14 OKSEF - Jul 14, 15:10 UTCJul 14, 15:50 UTC40m
2026-07-14 OKSEF - Jul 14, 14:55 UTCJul 14, 15:05 UTC10m
2026-07-12 OKSEF - Jul 12, 13:35 UTCJul 12, 13:50 UTC15m
2026-07-12 OKSEF - Jul 12, 10:35 UTCJul 12, 11:40 UTC1h 5m
2026-07-11 OKSEF - Jul 11, 09:40 UTCJul 11, 10:30 UTC50m
2026-07-10 OKSEF - Jul 10, 13:15 UTCJul 10, 13:35 UTC20m
2026-07-10 OKSEF - Jul 10, 06:50 UTCJul 10, 07:50 UTC1h 0m
2026-07-09 OKSEF - Jul 9, 18:00 UTCJul 9, 18:50 UTC50m
2026-07-09 OKSEF - Jul 9, 15:35 UTCJul 9, 16:05 UTC30m
2026-07-09 OKSEF - Jul 9, 13:40 UTCJul 9, 14:05 UTC25m
2026-07-09 OKSEF - Jul 9, 11:10 UTCJul 9, 11:35 UTC25m
2026-07-07 OKSEF - Jul 7, 17:15 UTCJul 7, 18:20 UTC1h 5m
2026-07-07 OKSEF - Jul 7, 11:00 UTCJul 7, 12:45 UTC1h 45m
2026-07-02 OKSEF - Jul 2, 10:30 UTCJul 2, 10:50 UTC20m
2026-07-02 OKSEF - Jul 2, 08:45 UTCJul 2, 09:05 UTC20m
2026-06-24 OKSEF - Jun 24, 18:25 UTCJun 24, 19:00 UTC35m
2026-06-24 OKSEF - Jun 24, 15:24 UTCJun 24, 16:24 UTC1h 0m
2026-06-16 OKSEF - Jun 16, 14:15 UTCJun 16, 16:05 UTC1h 50m
2026-06-16 OKSEF - Jun 16, 12:25 UTCJun 16, 13:09 UTC45m
2026-06-12 OKSEF - Jun 12, 12:15 UTCJun 12, 13:05 UTC50m
2026-06-12 OKSEF - Jun 12, 10:30 UTCJun 12, 10:50 UTC20m
2026-06-12 OKSEF - Jun 12, 07:55 UTCJun 12, 09:00 UTC1h 5m
2026-06-09 OKSEF - Jun 9, 16:45 UTCJun 9, 17:25 UTC40m
2026-06-09 OKSEF - Jun 9, 15:10 UTCJun 9, 15:30 UTC20m
2026-06-09 OKSEF - Jun 9, 14:55 UTCJun 9, 15:05 UTC10m
2026-06-04 OKSEF - Jun 4, 15:10 UTCJun 4, 16:05 UTC55m
2026-06-04 OKSEF - Jun 4, 13:10 UTCJun 4, 14:00 UTC50m

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

Mode-S 49D114 frequently asked

What is Mode-S code 49D114?
49D114 is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-SEF.
Where is Mode-S 49D114 registered?
Mode-S code 49D114 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 49D114 broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49D114, octal 22350424, decimal 4,837,652.
What flights does 49D114 operate?
Mode-S 49D114 has broadcast 1 distinct callsign, including OKSEF.