Apparatus

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sensors Mode-S transponder

4BB573

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-MKS · BOEING 737 MAX 8

Hex
4BB573
Octal
22732563
Decimal
4,961,651
Country
TR
Tail
TC-MKS
Type
B38M
No current signal · last broadcast Jun 8, 04:05 UTC
Flights observed
196
Distinct callsigns
20
Country
TR
Last broadcast
Jun 8, 04:05 UTC

Last known position

Most recent position reported by Mode-S 4BB573.

Country allocation

The ICAO 24-bit address 4BB573 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
CXI9V Shanxi Airlines 26 2026-05-29
CXI2W Shanxi Airlines 16 2026-05-25
CAI18XF Corendon Airlines 10 2026-06-06
CXI3J - 9 2026-05-29
CAI1Y Corendon Airlines 9 2026-06-07
CXI96TY Shanxi Airlines 8 2026-05-22
CXI8MM - 8 2026-06-02
CXI1KF Shanxi Airlines 8 2026-05-25
CXI84VA Shanxi Airlines 7 2026-05-16
CXI84MY Shanxi Airlines 7 2026-05-26
CXI33MY Shanxi Airlines 7 2026-05-26
CXI4G Shanxi Airlines 6 2026-06-06
CXI2ZD Shanxi Airlines 6 2026-05-26
CXI7QC Shanxi Airlines 5 2026-05-26
CXI84WD Shanxi Airlines 4 2026-05-29
CXI7J Shanxi Airlines 4 2026-06-04
CXI7DD Shanxi Airlines 4 2026-06-02
CXI5C Shanxi Airlines 4 2026-05-25
CXI558 Shanxi Airlines 4 2026-06-04
CXI557 Shanxi Airlines 4 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-08 CAI6DT CGN → AYT Jun 8, 00:50 UTCJun 8, 04:05 UTC3h 15m
2026-06-07 CAI3X AYT → CGN Jun 7, 20:00 UTCJun 7, 23:35 UTC3h 35m
2026-06-07 CAI157 MUC → AYT Jun 7, 14:35 UTCJun 7, 17:10 UTC2h 35m
2026-06-07 CAI158 AYT → MUC Jun 7, 10:15 UTCJun 7, 13:15 UTC3h 0m
2026-06-07 CAI1Y AYT → FMO Jun 7, 03:10 UTCJun 7, 05:50 UTC2h 40m
2026-06-06 CXI4G HRG → NUE Jun 6, 12:10 UTCJun 6, 22:05 UTC9h 55m
2026-06-06 CAI18XF AYT → NUE Jun 6, 02:55 UTCJun 6, 10:30 UTC7h 35m
2026-06-05 CXI4G HRG → NUE Jun 5, 12:05 UTCJun 5, 22:15 UTC10h 10m
2026-06-05 CXI3T FUE → DUS Jun 5, 07:30 UTCJun 5, 10:15 UTC2h 45m
2026-06-05 CXI1P NUE → RHO Jun 5, 03:20 UTCJun 5, 05:55 UTC2h 35m
2026-06-04 CXI7J FUE → NUE Jun 4, 15:55 UTCJun 4, 18:40 UTC2h 45m
2026-06-04 CXI26LQ NUE → KGS Jun 4, 12:05 UTCJun 4, 14:35 UTC2h 30m
2026-06-04 CXI558 PMI → NUE Jun 4, 08:15 UTCJun 4, 10:00 UTC1h 45m
2026-06-04 CXI557 NUE → PMI Jun 4, 05:00 UTCJun 4, 07:00 UTC2h 0m
2026-06-03 CXI4G HRG → NUE Jun 3, 12:45 UTCJun 3, 22:05 UTC9h 20m
2026-06-03 CAI18XF AYT → NUE Jun 3, 07:40 UTCJun 3, 10:40 UTC3h 0m
2026-06-03 CAI1Y AYT → FMO Jun 3, 03:05 UTCJun 3, 05:50 UTC2h 45m
2026-06-02 CXI8MM NUE → NUE Jun 2, 12:05 UTCJun 2, 21:55 UTC9h 50m
2026-06-02 CXI7DD PMI → NUE Jun 2, 08:25 UTCJun 2, 10:15 UTC1h 50m
2026-06-02 CXI3B NUE → PMI Jun 2, 05:05 UTCJun 2, 07:00 UTC1h 55m
2026-06-01 CXI81UN RHO → NUE Jun 1, 17:00 UTCJun 1, 19:50 UTC2h 50m
2026-06-01 CXI1P NUE → RHO Jun 1, 13:20 UTCJun 1, 16:00 UTC2h 40m
2026-06-01 CXI6MY KGS → NUE Jun 1, 09:30 UTCJun 1, 12:10 UTC2h 40m
2026-06-01 CXI3Z CGN → ACE Jun 1, 05:35 UTCJun 1, 08:00 UTC2h 25m
2026-05-31 CXI8MM NUE → NUE May 31, 12:30 UTCMay 31, 22:00 UTC9h 30m
2026-05-31 CAI18XF AYT → NUE May 31, 08:25 UTCMay 31, 11:00 UTC2h 35m
2026-05-30 CXI4G HRG → NUE May 30, 12:20 UTCMay 30, 22:00 UTC9h 40m
2026-05-30 CAI18XF AYT → NUE May 30, 07:35 UTCMay 30, 10:45 UTC3h 10m
2026-05-30 CAI1Y AYT → FMO May 30, 03:00 UTCMay 30, 05:50 UTC2h 50m
2026-05-29 CXI84WD LPA → NUE May 29, 12:20 UTCMay 29, 22:30 UTC10h 10m
2026-05-29 CXI9V HER → NUE May 29, 06:35 UTCMay 29, 09:10 UTC2h 35m
2026-05-29 CXI3J - May 29, 02:40 UTCMay 29, 04:55 UTC2h 15m
2026-05-28 CXI7J FUE → NUE May 28, 16:05 UTCMay 28, 18:50 UTC2h 45m
2026-05-28 CXI26LQ - May 28, 12:10 UTCMay 28, 14:40 UTC2h 30m
2026-05-28 CXI558 PMI → NUE May 28, 08:10 UTCMay 28, 10:05 UTC1h 55m
2026-05-28 CXI557 NUE → PMI May 28, 05:05 UTCMay 28, 06:50 UTC1h 45m
2026-05-27 CXI8MM NUE → NUE May 27, 12:15 UTCMay 27, 22:05 UTC9h 50m
2026-05-27 CAI18XF AYT → NUE May 27, 07:20 UTCMay 27, 10:20 UTC3h 0m
2026-05-27 CAI1Y AYT → FMO May 27, 03:09 UTCMay 27, 05:59 UTC2h 50m
2026-05-26 CXI7QC LPA → NUE May 26, 18:05 UTCMay 26, 22:09 UTC4h 5m
2026-05-26 CXI84MY NUE → LPA May 26, 12:20 UTCMay 26, 16:15 UTC3h 55m
2026-05-26 CXI2ZD CFU → NUE May 26, 08:15 UTCMay 26, 09:59 UTC1h 45m
2026-05-26 CXI33MY NUE → CFU May 26, 05:00 UTCMay 26, 06:34 UTC1h 35m
2026-05-25 CXI5C HAJ → ACE May 25, 17:30 UTCMay 25, 20:34 UTC3h 4m
2026-05-25 CXI2W DUS → RHO May 25, 11:15 UTCMay 25, 15:15 UTC4h 0m
2026-05-25 CXI9V HER → NUE May 25, 07:10 UTCMay 25, 09:40 UTC2h 30m
2026-05-25 CXI1KF NUE → HER May 25, 03:05 UTCMay 25, 05:35 UTC2h 30m
2026-05-24 CXI8MM - May 24, 12:25 UTCMay 24, 21:45 UTC9h 20m
2026-05-24 CAI18XF AYT → NUE May 24, 07:40 UTCMay 24, 10:35 UTC2h 55m
2026-05-24 CAI1Y AYT → FMO May 24, 03:05 UTCMay 24, 05:50 UTC2h 45m

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

Mode-S 4BB573 frequently asked

What is Mode-S code 4BB573?
4BB573 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-MKS.
Where is Mode-S 4BB573 registered?
Mode-S code 4BB573 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB573 broadcasting right now?
No active broadcast right now. Last signal was Jun 8, 04:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB573, octal 22732563, decimal 4,961,651.
What flights does 4BB573 operate?
Mode-S 4BB573 has broadcast 20 distinct callsigns, including CXI9V, CXI2W, CAI18XF, CXI3J, CAI1Y.