sensors Mode-S transponder

4BD155

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-TJU · BOEING 737-800

Hex
4BD155
Octal
22750525
Decimal
4,968,789
Country
TR
Tail
TC-TJU
Type
B738
Broadcasting now · callsign CXI57RW · 38,000 ft
Flights observed
114
Distinct callsigns
20
Country
TR
Last broadcast
52m ago

Current position

4BD155 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BD155 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
CXI79ZU - 17 2026-05-20
CXI7A - 11 2026-05-20
CXI2JY Shanxi Airlines 9 2026-05-23
CXI5K - 8 2026-05-13
CXI74WY Shanxi Airlines 7 2026-05-29
CXI38SB Shanxi Airlines 7 2026-05-19
CXI97RE Shanxi Airlines 6 2026-05-21
CXI6BK Shanxi Airlines 6 2026-05-26
CXI62QA Shanxi Airlines 6 2026-05-26
CXI57BX Shanxi Airlines 6 2026-05-25
CXI43AD Shanxi Airlines 6 2026-05-21
CXI74GY Shanxi Airlines 5 2026-05-19
CXI7YH Shanxi Airlines 4 2026-05-28
CXI6M Shanxi Airlines 3 2026-05-27
CXI57RW - 3 2026-04-18
CXI8M Shanxi Airlines 2 2026-05-28
CXI64EA Shanxi Airlines 2 2026-04-26
CXI27GP Shanxi Airlines 2 2026-05-24
CXI97DR - 1 2026-04-12
CXI65SR Shanxi Airlines 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CXI74WY STR → HRG May 29, 14:00 UTCMay 30, 05:15 UTC15h 15m
2026-05-28 CXI8M STR → HRG May 28, 19:25 UTCMay 29, 12:35 UTC17h 10m
2026-05-28 CXI7YH HRG → STR May 28, 08:45 UTCMay 28, 18:15 UTC9h 30m
2026-05-27 CXI57AU LEJ → HRG May 27, 19:55 UTCMay 28, 07:10 UTC11h 15m
2026-05-27 CXI6M HAJ → TFS May 27, 08:45 UTCMay 27, 18:20 UTC9h 35m
2026-05-26 CXI62QA HAM → HRG May 26, 18:55 UTCMay 27, 07:10 UTC12h 15m
2026-05-26 CXI6BK HRG → HAM May 26, 07:55 UTCMay 26, 17:44 UTC9h 50m
2026-05-25 CXI57BX STR → HRG May 25, 14:25 UTCMay 26, 06:34 UTC16h 9m
2026-05-24 CXI27GP HRG → STR May 24, 19:00 UTCMay 25, 13:15 UTC18h 15m
2026-05-24 CXI6BK HRG → HAM May 24, 07:50 UTCMay 24, 17:50 UTC10h 0m
2026-05-23 CXI2JY HRG → VIE May 23, 19:35 UTCMay 24, 06:35 UTC11h 0m
2026-05-23 CXI6M HAJ → TFS May 23, 08:45 UTCMay 23, 18:15 UTC9h 31m
2026-05-22 CXI74WY STR → HRG May 22, 14:20 UTCMay 23, 07:10 UTC16h 49m
2026-05-21 CXI43AD HRG → STR May 21, 19:30 UTCMay 22, 12:45 UTC17h 14m
2026-05-21 CXI97RE VIE → HRG May 21, 08:40 UTCMay 21, 18:10 UTC9h 30m
2026-05-20 CXI79ZU - May 20, 11:20 UTCMay 21, 07:10 UTC19h 50m
2026-05-20 CXI79ZU - May 20, 09:20 UTCMay 21, 07:10 UTC21h 50m
2026-05-20 CXI79ZU LNZ → VIE May 20, 08:45 UTCMay 21, 07:10 UTC22h 25m
2026-05-20 CXI7A - May 20, 04:00 UTCMay 20, 07:30 UTC3h 31m
2026-05-19 CXI7A - May 19, 09:20 UTCMay 20, 07:30 UTC22h 11m
2026-05-19 CXI38SB VIE → HRG May 19, 08:00 UTCMay 20, 07:15 UTC23h 16m
2026-05-19 CXI74GY HRG → VIE May 19, 03:00 UTCMay 19, 06:30 UTC3h 30m
2026-05-17 CXI62QA HAM → HRG May 17, 19:01 UTCMay 17, 22:55 UTC3h 55m
2026-05-17 CXI6BK HRG → HAM May 17, 07:45 UTCMay 17, 17:45 UTC10h 0m
2026-05-16 CXI65SR LEJ → HRG May 16, 19:40 UTCMay 17, 06:30 UTC10h 50m
2026-05-16 CXI6M HAJ → TFS May 16, 08:46 UTCMay 16, 18:25 UTC9h 40m
2026-05-15 CXI74WY STR → HRG May 15, 14:55 UTCMay 16, 07:31 UTC16h 36m
2026-05-14 CXI43AD HRG → STR May 14, 19:45 UTCMay 15, 13:15 UTC17h 30m
2026-05-14 CXI7YH HRG → STR May 14, 09:10 UTCMay 14, 18:35 UTC9h 25m
2026-05-14 CXI79ZU - May 14, 04:35 UTCMay 14, 07:20 UTC2h 45m
2026-05-13 CXI79ZU - May 13, 11:20 UTCMay 14, 07:20 UTC20h 0m
2026-05-13 CXI79ZU - May 13, 09:20 UTCMay 14, 07:20 UTC22h 0m
2026-05-13 CXI5K - May 13, 08:35 UTCMay 14, 07:15 UTC22h 40m
2026-05-13 CXI7A - May 13, 03:40 UTCMay 13, 07:25 UTC3h 45m
2026-05-12 CXI7A - May 12, 09:20 UTCMay 13, 07:25 UTC22h 5m
2026-05-12 CXI7A - May 12, 07:55 UTCMay 13, 07:15 UTC23h 20m
2026-05-12 CXI74GY HRG → VIE May 12, 03:05 UTCMay 12, 06:35 UTC3h 30m
2026-05-10 CXI62QA HAM → HRG May 10, 19:05 UTCMay 10, 23:05 UTC4h 0m
2026-05-10 CXI6BK HRG → HAM May 10, 13:40 UTCMay 10, 17:59 UTC4h 20m
2026-05-09 CXI5K - May 9, 08:40 UTCMay 9, 11:30 UTC2h 50m
2026-05-08 CXI62QA HAM → HRG May 8, 15:05 UTCMay 9, 07:25 UTC16h 20m
2026-05-07 CXI8M STR → HRG May 7, 20:15 UTCMay 8, 13:40 UTC17h 25m
2026-05-07 CXI7YH HRG → STR May 7, 08:40 UTCMay 7, 18:50 UTC10h 10m
2026-05-07 CXI79ZU - May 7, 04:20 UTCMay 7, 07:20 UTC3h 0m
2026-05-06 CXI79ZU - May 6, 11:20 UTCMay 7, 07:20 UTC19h 59m
2026-05-06 CXI79ZU - May 6, 09:20 UTCMay 7, 07:20 UTC21h 59m
2026-05-06 CXI5K - May 6, 08:45 UTCMay 7, 07:15 UTC22h 29m
2026-05-06 CXI7A - May 6, 05:00 UTCMay 6, 07:35 UTC2h 35m
2026-05-05 CXI7A - May 5, 09:20 UTCMay 6, 07:35 UTC22h 15m
2026-05-05 CXI38SB VIE → HRG May 5, 07:45 UTCMay 6, 07:15 UTC23h 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-TJU page for operator, model, and routing details .

Mode-S 4BD155 frequently asked

What is Mode-S code 4BD155?
4BD155 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-TJU.
Where is Mode-S 4BD155 registered?
Mode-S code 4BD155 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BD155 broadcasting right now?
Yes. Mode-S 4BD155 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BD155, octal 22750525, decimal 4,968,789.
What flights does 4BD155 operate?
Mode-S 4BD155 has broadcast 20 distinct callsigns, including CXI79ZU, CXI7A, CXI2JY, CXI5K, CXI74WY.