Apparatus

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sensors Mode-S transponder

4BD159

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-TJY · BOEING 737-800

Hex
4BD159
Octal
22750531
Decimal
4,968,793
Country
TR
Tail
TC-TJY
Type
B738
No current signal · last broadcast 5h ago
Flights observed
253
Distinct callsigns
20
Country
TR
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 4BD159.

Country allocation

The ICAO 24-bit address 4BD159 falls within the block assigned to Turkey (TR) by ICAO Annex 10, Volume III. Every aircraft registered in Turkey 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
CXI18TY - 12 2026-06-07
CXI8NU - 11 2026-06-07
CAI6VB - 10 2026-07-11
CXI6D Shanxi Airlines 9 2026-04-27
CXI3K Shanxi Airlines 9 2026-04-29
CAI33EG - 9 2026-07-11
CAI47GF - 7 2026-07-11
CAI3DP - 7 2026-07-11
CAI8E - 6 2026-06-21
CXI8DF - 5 2026-05-08
CXI6U Shanxi Airlines 5 2026-04-17
CXI6F Shanxi Airlines 5 2026-05-06
CXI4HL Shanxi Airlines 5 2026-05-06
CAI3VT - 5 2026-07-06
CAI34HR - 5 2026-07-06
CXI75NW - 4 2026-06-09
CXI43ZR - 4 2026-06-12
CAI8YG - 4 2026-04-22
CAI7XP - 4 2026-07-12
CAI5TP - 4 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAI83BV HAM → AYT Jul 14, 11:15 UTCJul 14, 14:25 UTC3h 10m
2026-07-14 CAI3GK - Jul 14, 06:25 UTCJul 14, 09:50 UTC3h 25m
2026-07-14 CAI6DT CGN → AYT Jul 14, 01:10 UTCJul 14, 04:15 UTC3h 5m
2026-07-13 CAI3X AYT → CGN Jul 13, 20:15 UTCJul 13, 23:45 UTC3h 30m
2026-07-13 CAI74LK BRU → AYT Jul 13, 10:30 UTCJul 13, 13:45 UTC3h 15m
2026-07-13 CAI3GV - Jul 13, 05:20 UTCJul 13, 08:55 UTC3h 35m
2026-07-13 CAI1M HAJ → AYT Jul 13, 00:50 UTCJul 13, 03:55 UTC3h 5m
2026-07-12 CAI7XP - Jul 12, 20:01 UTCJul 12, 23:10 UTC3h 10m
2026-07-12 CAI5CW BTS → AYT Jul 12, 16:25 UTCJul 12, 18:40 UTC2h 15m
2026-07-12 CAI2Y - Jul 12, 12:35 UTCJul 12, 14:55 UTC2h 20m
2026-07-12 CAI83BV HAM → AYT Jul 12, 07:45 UTCJul 12, 10:55 UTC3h 10m
2026-07-12 CAI3GK - Jul 12, 03:05 UTCJul 12, 06:25 UTC3h 20m
2026-07-11 CAI33EG - Jul 11, 17:55 UTCJul 11, 21:05 UTC3h 10m
2026-07-11 CAI6VB - Jul 11, 15:35 UTCJul 11, 16:15 UTC40m
2026-07-11 CAI6VB - Jul 11, 12:45 UTCJul 11, 15:30 UTC2h 45m
2026-07-11 CAI3DP GRQ → AYT Jul 11, 08:05 UTCJul 11, 11:35 UTC3h 30m
2026-07-11 CAI47GF - Jul 11, 03:05 UTCJul 11, 06:35 UTC3h 30m
2026-07-10 CAI33EG DUS → AYT Jul 10, 18:20 UTCJul 10, 21:20 UTC3h 1m
2026-07-10 CAI6VB - Jul 10, 13:10 UTCJul 10, 16:55 UTC3h 45m
2026-07-10 CAI8SN - Jul 10, 08:05 UTCJul 10, 10:20 UTC2h 15m
2026-07-10 CAI5TP - Jul 10, 04:10 UTCJul 10, 06:50 UTC2h 40m
2026-07-06 CAI33EG - Jul 6, 18:00 UTCJul 6, 21:00 UTC3h 0m
2026-07-06 CAI6VB - Jul 6, 12:35 UTCJul 6, 16:15 UTC3h 40m
2026-07-06 CAI34HR - Jul 6, 08:45 UTCJul 6, 11:00 UTC2h 15m
2026-07-06 CAI3VT - Jul 6, 05:00 UTCJul 6, 07:35 UTC2h 35m
2026-07-06 CAI6CP NUE → AYT Jul 6, 00:30 UTCJul 6, 03:40 UTC3h 10m
2026-07-05 CAI5JN - Jul 5, 20:05 UTCJul 5, 23:10 UTC3h 5m
2026-07-05 CAI83BV - Jul 5, 08:00 UTCJul 5, 11:25 UTC3h 25m
2026-07-05 CAI3GK - Jul 5, 03:20 UTCJul 5, 06:55 UTC3h 35m
2026-07-04 CAI1F - Jul 4, 17:55 UTCJul 4, 20:45 UTC2h 50m
2026-07-04 CAI6XG - Jul 4, 13:20 UTCJul 4, 16:50 UTC3h 30m
2026-07-04 CAI56RM BTS → AYT Jul 4, 09:35 UTCJul 4, 11:55 UTC2h 20m
2026-07-04 CAI95WC - Jul 4, 06:00 UTCJul 4, 08:25 UTC2h 25m
2026-07-04 CAI1M - Jul 4, 01:25 UTCJul 4, 04:30 UTC3h 5m
2026-07-03 CAI7XP - Jul 3, 20:50 UTCJul 4, 00:15 UTC3h 25m
2026-07-03 CAI107 DUS → AYT Jul 3, 11:10 UTCJul 3, 14:20 UTC3h 10m
2026-07-03 CAI108 - Jul 3, 06:00 UTCJul 3, 09:35 UTC3h 35m
2026-07-03 CAI6DT CGN → AYT Jul 3, 01:20 UTCJul 3, 04:30 UTC3h 10m
2026-07-02 CAI3X AYT → CGN Jul 2, 20:10 UTCJul 2, 23:35 UTC3h 25m
2026-07-02 CAI86CM - Jul 2, 08:20 UTCJul 2, 10:45 UTC2h 25m
2026-07-02 CAI5TP - Jul 2, 04:05 UTCJul 2, 06:30 UTC2h 25m
2026-07-01 CAI48Z FDH → AYT Jul 1, 16:10 UTCJul 1, 19:10 UTC3h 0m
2026-07-01 CAI46SZ AYT → FDH Jul 1, 11:30 UTCJul 1, 14:25 UTC2h 55m
2026-06-28 CAI055P - Jun 28, 22:20 UTCJun 28, 22:39 UTC20m
2026-06-28 CAI72KV - Jun 28, 18:00 UTCJun 28, 21:24 UTC3h 25m
2026-06-28 CAI3R CGN → AYT Jun 28, 13:10 UTCJun 28, 16:29 UTC3h 20m
2026-06-28 CAI056P - Jun 28, 11:45 UTCJun 28, 12:05 UTC20m
2026-06-27 CAI33EG - Jun 27, 18:15 UTCJun 27, 21:29 UTC3h 15m
2026-06-27 CAI6VB AYT → DUS Jun 27, 13:00 UTCJun 27, 16:30 UTC3h 30m
2026-06-27 CAI3DP - Jun 27, 08:10 UTCJun 27, 11:39 UTC3h 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 TC-TJY page for operator, model, and routing details .

Mode-S 4BD159 frequently asked

What is Mode-S code 4BD159?
4BD159 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-TJY.
Where is Mode-S 4BD159 registered?
Mode-S code 4BD159 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BD159 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BD159, octal 22750531, decimal 4,968,793.
What flights does 4BD159 operate?
Mode-S 4BD159 has broadcast 20 distinct callsigns, including CXI18TY, CXI8NU, CAI6VB, CXI6D, CXI3K.