Apparatus

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sensors Mode-S transponder

49D1CD

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to OK-TVS · BOEING 737-800

Hex
49D1CD
Octal
22350715
Decimal
4,837,837
Country
CZ
Tail
OK-TVS
Type
B738
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
557
Distinct callsigns
20
Country
CZ
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 49D1CD.

Country allocation

The ICAO 24-bit address 49D1CD 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
SEJ874 Spicejet 21 2026-05-21
SEJ166 Spicejet 20 2026-05-24
SEJ194 Spicejet 19 2026-05-26
SEJ193 Spicejet 18 2026-05-25
SEJ875 Spicejet 17 2026-05-22
SEJ167 Spicejet 17 2026-05-24
SEJ768 Spicejet 16 2026-05-25
SEJ767 Spicejet 15 2026-05-26
SEJ696 Spicejet 13 2026-05-01
SEJ695 Spicejet 13 2026-05-28
SEJ878 Spicejet 12 2026-05-21
TVS2NQ Smart Wings 8 2026-07-26
TVS1NQ Smart Wings 8 2026-07-26
SEJ697 Spicejet 8 2026-05-28
SEJ880 Spicejet 7 2026-05-24
SEJ698 Spicejet 7 2026-04-25
SEJ506 Spicejet 7 2026-05-27
TVS9FL Smart Wings 5 2026-07-21
TVS9F6 Smart Wings 5 2026-07-21
TVS9BH Smart Wings 5 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TVS78S LCA → BTS Jul 26, 19:25 UTCJul 26, 21:15 UTC1h 50m
2026-07-26 TVS78N BTS → LCA Jul 26, 15:40 UTCJul 26, 18:10 UTC2h 30m
2026-07-26 TVQ6335 KGS → BTS Jul 26, 12:05 UTCJul 26, 14:25 UTC2h 20m
2026-07-26 TVQ6334 BTS → KGS Jul 26, 08:55 UTCJul 26, 10:50 UTC1h 55m
2026-07-26 TVS2NQ ZTH → BTS Jul 26, 05:40 UTCJul 26, 07:25 UTC1h 46m
2026-07-26 TVS1NQ BTS → ZTH Jul 26, 02:35 UTCJul 26, 04:15 UTC1h 40m
2026-07-25 TVQ6469 MIR → BTS Jul 25, 23:00 UTCJul 26, 00:55 UTC1h 55m
2026-07-25 TVQ6468 BTS → MIR Jul 25, 19:55 UTCJul 25, 22:00 UTC2h 5m
2026-07-25 TVQ6191 AYT → BTS Jul 25, 16:20 UTCJul 25, 18:50 UTC2h 30m
2026-07-25 TVQ6190 BTS → AYT Jul 25, 12:00 UTCJul 25, 15:00 UTC3h 0m
2026-07-25 TVQ6324 BTS → KGS Jul 25, 07:15 UTCJul 25, 09:30 UTC2h 15m
2026-07-25 TVQ6324 BTS → KGS Jul 25, 05:30 UTCJul 25, 05:40 UTC10m
2026-07-25 TVQ6324 BTS → KGS Jul 25, 02:15 UTCJul 25, 04:15 UTC2h 0m
2026-07-24 TVQ6169 AYT → BTS Jul 24, 21:10 UTCJul 24, 23:25 UTC2h 15m
2026-07-24 TVQ6170 KSC → AYT Jul 24, 17:15 UTCJul 24, 19:20 UTC2h 5m
2026-07-24 TVQ6171 AYT → KSC Jul 24, 13:55 UTCJul 24, 16:05 UTC2h 10m
2026-07-24 TVQ6168 BTS → AYT Jul 24, 10:00 UTCJul 24, 12:25 UTC2h 25m
2026-07-24 TVQ6465 DJE → BTS Jul 24, 06:35 UTCJul 24, 08:50 UTC2h 15m
2026-07-24 TVQ6464 BTS → DJE Jul 24, 03:20 UTCJul 24, 05:25 UTC2h 5m
2026-07-23 TVQ6837 TIA → BTS Jul 23, 17:50 UTCJul 23, 18:55 UTC1h 5m
2026-07-23 TVQ6858 - Jul 23, 14:50 UTCJul 23, 15:45 UTC55m
2026-07-23 TVQ6859 - Jul 23, 12:50 UTCJul 23, 13:50 UTC1h 0m
2026-07-23 TVQ6836 - Jul 23, 09:50 UTCJul 23, 10:45 UTC55m
2026-07-23 TVS2NQ ZTH → BTS Jul 23, 05:35 UTCJul 23, 07:20 UTC1h 45m
2026-07-23 TVS1NQ BTS → ZTH Jul 23, 02:40 UTCJul 23, 04:20 UTC1h 40m
2026-07-22 TVQ6313 LCA → BTS Jul 22, 20:45 UTCJul 22, 23:40 UTC2h 55m
2026-07-22 TVQ6312 BTS → LCA Jul 22, 16:40 UTCJul 22, 19:10 UTC2h 30m
2026-07-22 TVQ6145 AYT → BTS Jul 22, 12:55 UTCJul 22, 15:25 UTC2h 30m
2026-07-21 TVQ6064 BTS → RMF Jul 21, 22:10 UTCJul 22, 10:25 UTC12h 15m
2026-07-21 TVQ6557 VAR → BTS Jul 21, 19:25 UTCJul 21, 20:55 UTC1h 30m
2026-07-21 TVQ6556 BTS → VAR Jul 21, 16:45 UTCJul 21, 18:05 UTC1h 20m
2026-07-21 TVS9B2 BOJ → BTS Jul 21, 10:55 UTCJul 21, 12:35 UTC1h 40m
2026-07-21 TVS9FL KSC → BOJ Jul 21, 08:35 UTCJul 21, 09:55 UTC1h 20m
2026-07-21 TVS9F6 BOJ → KSC Jul 21, 06:10 UTCJul 21, 07:30 UTC1h 20m
2026-07-21 TVS9BH BTS → BOJ Jul 21, 03:35 UTCJul 21, 04:55 UTC1h 20m
2026-07-20 TVQ6143 AYT → BTS Jul 20, 19:35 UTCJul 20, 22:00 UTC2h 25m
2026-07-20 TVQ6142 BTS → AYT Jul 20, 16:00 UTCJul 20, 18:20 UTC2h 20m
2026-07-20 TVQ6257 CDT → BTS Jul 20, 12:30 UTCJul 20, 14:35 UTC2h 5m
2026-07-20 TVQ6256 BTS → CDT Jul 20, 08:35 UTCJul 20, 11:20 UTC2h 45m
2026-07-20 TVS2NQ ZTH → BTS Jul 20, 05:35 UTCJul 20, 07:15 UTC1h 40m
2026-07-20 TVS1NQ BTS → ZTH Jul 20, 02:30 UTCJul 20, 04:15 UTC1h 45m
2026-07-19 TVS78S LCA → BTS Jul 19, 19:45 UTCJul 19, 22:35 UTC2h 50m
2026-07-19 TVS78N BTS → LCA Jul 19, 16:05 UTCJul 19, 18:40 UTC2h 35m
2026-07-19 TVQ6335 KGS → BTS Jul 19, 12:10 UTCJul 19, 14:15 UTC2h 5m
2026-07-19 TVQ6334 BTS → KGS Jul 19, 08:45 UTCJul 19, 10:45 UTC2h 0m
2026-07-19 TVS2NQ - Jul 19, 05:40 UTCJul 19, 07:25 UTC1h 45m
2026-07-19 TVS1NQ - Jul 19, 02:40 UTCJul 19, 04:30 UTC1h 50m
2026-07-18 TVQ6017 MUH → BTS Jul 18, 09:15 UTCJul 18, 15:50 UTC6h 35m
2026-07-18 TVQ6016 BTS → MUH Jul 18, 01:20 UTCJul 18, 07:50 UTC6h 31m
2026-07-17 TVQ6169 AYT → BTS Jul 17, 20:40 UTCJul 17, 23:00 UTC2h 20m

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

Mode-S 49D1CD frequently asked

What is Mode-S code 49D1CD?
49D1CD is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to OK-TVS.
Where is Mode-S 49D1CD registered?
Mode-S code 49D1CD 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 49D1CD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 49D1CD, octal 22350715, decimal 4,837,837.
What flights does 49D1CD operate?
Mode-S 49D1CD has broadcast 20 distinct callsigns, including SEJ874, SEJ166, SEJ194, SEJ193, SEJ875.