Apparatus

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sensors Mode-S transponder

49D3D4

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-SWA · BOEING 737 MAX 8

Hex
49D3D4
Octal
22351724
Decimal
4,838,356
Country
CZ
Tail
OK-SWA
Type
B38M
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
431
Distinct callsigns
20
Country
CZ
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S 49D3D4.

Country allocation

The ICAO 24-bit address 49D3D4 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 20 distinct

Callsign Airline Flights Last seen
TVS91M Smart Wings 10 2026-07-23
TVS92M Smart Wings 9 2026-07-23
TVS4KM Smart Wings 9 2026-07-26
TVS3KM Smart Wings 9 2026-07-26
TVS9EK Smart Wings 8 2026-05-24
TVS4104 - 8 2026-07-14
TVS52A - 7 2026-07-16
TVS6HK - 6 2026-07-15
TVS5HK - 6 2026-07-15
TVS32R - 6 2026-07-15
TVS31R - 6 2026-07-15
TVS2230 - 6 2026-07-16
TVS9E5 Smart Wings 5 2026-05-24
TVS53B - 5 2026-07-16
TVS4ZA - 5 2026-07-12
TVS3CE Smart Wings 5 2026-04-25
TVS2QZ - 5 2026-07-12
TVS2DE - 5 2026-07-04
TVS1DE - 5 2026-07-04
TVS8FA - 4 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TVS3FH PRG → HER Jul 26, 10:30 UTCJul 26, 20:10 UTC9h 40m
2026-07-26 TVS4KM ZTH → PRG Jul 26, 07:00 UTCJul 26, 09:05 UTC2h 5m
2026-07-26 TVS3KM PRG → ZTH Jul 26, 03:55 UTCJul 26, 05:50 UTC1h 55m
2026-07-25 TVS4QS PVK → PRG Jul 25, 02:40 UTCJul 25, 07:20 UTC4h 40m
2026-07-24 TVS3813 DLM → PRG Jul 24, 21:25 UTCJul 25, 00:05 UTC2h 40m
2026-07-24 TVP7534 GDN → DLM Jul 24, 16:55 UTCJul 24, 19:25 UTC2h 30m
2026-07-24 TVP7535 DLM → GDN Jul 24, 12:40 UTCJul 24, 15:35 UTC2h 55m
2026-07-24 TVP7774 KTW → DLM Jul 24, 09:15 UTCJul 24, 11:25 UTC2h 10m
2026-07-24 TVP7057 VAR → KTW Jul 24, 06:35 UTCJul 24, 07:55 UTC1h 20m
2026-07-24 TVS2892 PRG → BOJ Jul 24, 03:25 UTCJul 24, 05:10 UTC1h 45m
2026-07-23 TVS6P7 FNC → PRG Jul 23, 16:25 UTCJul 23, 20:20 UTC3h 55m
2026-07-23 TVS6N7 PRG → FNC Jul 23, 11:00 UTCJul 23, 15:25 UTC4h 25m
2026-07-23 TVS91M AYT → PRG Jul 23, 06:40 UTCJul 23, 09:30 UTC2h 50m
2026-07-23 TVS92M PRG → AYT Jul 23, 02:50 UTCJul 23, 05:35 UTC2h 45m
2026-07-22 TVS9C4 - Jul 22, 22:30 UTCJul 23, 01:20 UTC2h 50m
2026-07-22 TVS4362 KLV → AYT Jul 22, 18:05 UTCJul 22, 20:45 UTC2h 40m
2026-07-22 TVS4363 AYT → KLV Jul 22, 14:05 UTCJul 22, 17:00 UTC2h 55m
2026-07-22 TVS9C3 - Jul 22, 04:45 UTCJul 22, 12:35 UTC7h 50m
2026-07-21 ISR894 TBS → TLV Jul 21, 23:55 UTCJul 22, 02:15 UTC2h 20m
2026-07-21 ISR893 TLV → TBS Jul 21, 18:45 UTCJul 21, 20:50 UTC2h 5m
2026-07-21 ISR764 PRG → TLV Jul 21, 13:50 UTCJul 21, 17:10 UTC3h 20m
2026-07-21 TVS4KM - Jul 21, 10:10 UTCJul 21, 12:15 UTC2h 5m
2026-07-21 TVS3KM PRG → ZTH Jul 21, 06:40 UTCJul 21, 09:05 UTC2h 25m
2026-07-20 TVS2721 SUF → PRG Jul 20, 22:15 UTCJul 21, 00:05 UTC1h 49m
2026-07-20 TVS2733 SUF → PED Jul 20, 19:10 UTCJul 20, 20:40 UTC1h 30m
2026-07-20 TVS2733 SUF → PED Jul 20, 17:35 UTCJul 20, 17:55 UTC20m
2026-07-20 TVS2733 SUF → PED Jul 20, 15:15 UTCJul 20, 16:55 UTC1h 40m
2026-07-20 TVS2720 PRG → SUF Jul 20, 11:50 UTCJul 20, 13:45 UTC1h 55m
2026-07-20 TVS87M TLV → PRG Jul 20, 03:55 UTCJul 20, 07:30 UTC3h 35m
2026-07-19 TVS86L PRG → TLV Jul 19, 23:15 UTCJul 20, 02:35 UTC3h 20m
2026-07-19 TVS4FH FUE → HER Jul 19, 16:55 UTCJul 19, 19:55 UTC3h 0m
2026-07-19 TVS3FH - Jul 19, 09:50 UTCJul 19, 14:35 UTC4h 45m
2026-07-18 TVS8KQ PRG → PRG Jul 18, 23:20 UTCJul 19, 08:40 UTC9h 20m
2026-07-18 TVS5FA - Jul 18, 20:30 UTCJul 18, 22:05 UTC1h 35m
2026-07-18 TVS8FA - Jul 18, 16:50 UTCJul 18, 18:30 UTC1h 40m
2026-07-18 TVS2339 RHO → PRG Jul 18, 00:15 UTCJul 18, 02:55 UTC2h 41m
2026-07-17 TVS2262 PED → RHO Jul 17, 20:50 UTCJul 17, 23:10 UTC2h 20m
2026-07-17 TVS2263 RHO → JCL Jul 17, 17:20 UTCJul 17, 19:55 UTC2h 35m
2026-07-17 TVS2338 PRG → RHO Jul 17, 13:35 UTCJul 17, 16:10 UTC2h 35m
2026-07-17 TVS4PR - Jul 17, 06:20 UTCJul 17, 08:45 UTC2h 25m
2026-07-17 TVS3PR - Jul 17, 02:54 UTCJul 17, 04:59 UTC2h 5m
2026-07-16 TVS53B - Jul 16, 22:30 UTCJul 17, 01:20 UTC2h 50m
2026-07-16 TVS52A - Jul 16, 16:35 UTCJul 16, 19:55 UTC3h 20m
2026-07-16 TVS4QS PVK → PRG Jul 16, 13:00 UTCJul 16, 15:05 UTC2h 5m
2026-07-16 TVS2230 - Jul 16, 10:10 UTCJul 16, 11:34 UTC1h 25m
2026-07-16 TVS2230 - Jul 16, 08:10 UTCJul 16, 08:25 UTC15m
2026-07-16 TVS2230 PVK → BRQ Jul 16, 05:30 UTCJul 16, 07:10 UTC1h 40m
2026-07-16 TVS3QS - Jul 16, 02:25 UTCJul 16, 03:55 UTC1h 30m
2026-07-15 TVS6KN - Jul 15, 20:50 UTCJul 15, 23:50 UTC3h 0m
2026-07-15 TVS5KN PRG → AYT Jul 15, 17:05 UTCJul 15, 19:35 UTC2h 30m

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

Mode-S 49D3D4 frequently asked

What is Mode-S code 49D3D4?
49D3D4 is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-SWA.
Where is Mode-S 49D3D4 registered?
Mode-S code 49D3D4 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 49D3D4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49D3D4, octal 22351724, decimal 4,838,356.
What flights does 49D3D4 operate?
Mode-S 49D3D4 has broadcast 20 distinct callsigns, including TVS91M, TVS92M, TVS4KM, TVS3KM, TVS9EK.