Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4BAB29

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JYI · BOEING 737-900

Hex
4BAB29
Octal
22725451
Decimal
4,959,017
Country
TR
Tail
TC-JYI
Type
B739
No current signal · last broadcast Jul 26, 20:20 UTC
Flights observed
399
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 20:20 UTC

Last known position

Most recent position reported by Mode-S 4BAB29.

Country allocation

The ICAO 24-bit address 4BAB29 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
THY849 Turkish Airlines 11 2026-07-19
THY845 Turkish Airlines 9 2026-07-26
THY8GS - 8 2026-07-20
THY848 Turkish Airlines 8 2026-07-19
THY9FU - 7 2026-05-27
THY6RZ Turkish Airlines 7 2026-06-13
THY4AV Turkish Airlines 7 2026-07-20
THY2QT - 7 2026-06-13
THY4GL - 6 2026-07-17
THY9GY - 5 2026-07-17
THY841 Turkish Airlines 5 2026-07-24
THY6TH - 5 2026-05-27
THY6HM Turkish Airlines 5 2026-07-25
THY1VN - 5 2026-07-06
THY1271 Turkish Airlines 5 2026-05-30
THY9QS - 4 2026-07-06
THY847 Turkish Airlines 4 2026-06-06
THY7YC - 4 2026-07-15
THY5SN Turkish Airlines 4 2026-07-25
THY2477 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY6YB BAL → IST Jul 26, 18:15 UTCJul 26, 20:20 UTC2h 5m
2026-07-26 THY5BJ IST → MLX Jul 26, 15:00 UTCJul 26, 17:05 UTC2h 5m
2026-07-26 THY845 ALP → IST Jul 26, 05:05 UTCJul 26, 09:55 UTC4h 51m
2026-07-25 THY6HM IST → MBA Jul 25, 16:10 UTCJul 25, 16:25 UTC15m
2026-07-25 THY6HM IST → MBA Jul 25, 14:45 UTCJul 25, 15:25 UTC40m
2026-07-25 THY5SN IST → MSR Jul 25, 12:10 UTCJul 25, 13:35 UTC1h 25m
2026-07-25 THY845 ALP → IST Jul 25, 05:00 UTCJul 25, 10:00 UTC5h 0m
2026-07-24 THY4WF ESB → IST Jul 24, 21:30 UTCJul 24, 22:00 UTC30m
2026-07-24 THY1VP IST → BRE Jul 24, 19:30 UTCJul 24, 19:55 UTC25m
2026-07-24 THY841 ALP → IST Jul 24, 10:45 UTCJul 24, 15:35 UTC4h 50m
2026-07-24 THY8NL VAS → IST Jul 24, 05:35 UTCJul 24, 08:55 UTC3h 20m
2026-07-23 THY8SF MXP → IST Jul 23, 17:25 UTCJul 23, 19:40 UTC2h 15m
2026-07-23 THY9EU IST → NUE Jul 23, 13:40 UTCJul 23, 16:20 UTC2h 40m
2026-07-23 THY8ED IST → CDG Jul 23, 08:35 UTCJul 23, 10:30 UTC1h 55m
2026-07-23 THY6CF STR → IST Jul 23, 05:10 UTCJul 23, 07:20 UTC2h 10m
2026-07-22 THY5UV IST → EDO Jul 22, 23:15 UTCJul 22, 23:45 UTC30m
2026-07-22 THY1NM IST → ESB Jul 22, 21:25 UTCJul 22, 21:50 UTC25m
2026-07-22 THY7QZ IST → IST Jul 22, 15:25 UTCJul 22, 16:15 UTC50m
2026-07-22 THY7QZ IST → IST Jul 22, 13:40 UTCJul 22, 14:45 UTC1h 5m
2026-07-22 THY3BJ IST → MAN Jul 22, 05:00 UTCJul 22, 12:20 UTC7h 20m
2026-07-21 THY8NG IST → LGW Jul 21, 20:10 UTCJul 21, 21:00 UTC50m
2026-07-21 THY4UM - Jul 21, 17:50 UTCJul 21, 18:40 UTC50m
2026-07-21 THY841 ALP → IST Jul 21, 15:45 UTCJul 21, 16:00 UTC15m
2026-07-21 THY840 IST → ALP Jul 21, 10:50 UTCJul 21, 14:55 UTC4h 5m
2026-07-21 THY9LR FRA → SAW Jul 21, 05:50 UTCJul 21, 06:45 UTC55m
2026-07-20 THY8VC - Jul 20, 18:25 UTCJul 20, 19:15 UTC50m
2026-07-20 THY6HM IST → MBA Jul 20, 15:40 UTCJul 20, 15:55 UTC15m
2026-07-20 THY6HM IST → MBA Jul 20, 14:25 UTCJul 20, 15:00 UTC35m
2026-07-20 THY5SN IST → MSR Jul 20, 13:05 UTCJul 20, 13:15 UTC10m
2026-07-20 THY5SN IST → MSR Jul 20, 12:00 UTCJul 20, 12:25 UTC25m
2026-07-20 THY8GS - Jul 20, 05:40 UTCJul 20, 07:15 UTC1h 35m
2026-07-20 THY4AV IST → TZX Jul 20, 04:20 UTCJul 20, 04:30 UTC10m
2026-07-20 THY4AV IST → TZX Jul 20, 03:15 UTCJul 20, 03:40 UTC25m
2026-07-19 THY60E - Jul 19, 19:10 UTCJul 19, 19:20 UTC10m
2026-07-19 THY60E - Jul 19, 17:20 UTCJul 19, 18:15 UTC55m
2026-07-19 THY7KB - Jul 19, 14:20 UTCJul 19, 16:05 UTC1h 45m
2026-07-19 THY7NC - Jul 19, 11:05 UTCJul 19, 11:35 UTC30m
2026-07-19 THY1BS - Jul 19, 09:40 UTCJul 19, 09:50 UTC10m
2026-07-19 THY1BS - Jul 19, 08:35 UTCJul 19, 09:05 UTC30m
2026-07-19 THY849 DAM → IST Jul 19, 05:00 UTCJul 19, 06:45 UTC1h 45m
2026-07-19 THY848 IST → DAM Jul 19, 01:40 UTCJul 19, 03:10 UTC1h 30m
2026-07-18 THY6GT - Jul 18, 18:35 UTCJul 18, 22:15 UTC3h 40m
2026-07-18 THY6HM IST → MBA Jul 18, 14:35 UTCJul 18, 15:05 UTC30m
2026-07-18 THY5SN IST → MSR Jul 18, 12:00 UTCJul 18, 12:25 UTC25m
2026-07-18 THY845 - Jul 18, 09:25 UTCJul 18, 10:00 UTC35m
2026-07-18 THY844 - Jul 18, 05:05 UTCJul 18, 05:35 UTC30m
2026-07-17 THY272 - Jul 17, 16:34 UTCJul 17, 19:45 UTC3h 10m
2026-07-17 THY4GL - Jul 17, 12:10 UTCJul 17, 13:40 UTC1h 30m
2026-07-17 THY9GY - Jul 17, 09:04 UTCJul 17, 10:44 UTC1h 40m
2026-07-17 THY849 DAM → IST Jul 17, 05:04 UTCJul 17, 06:45 UTC1h 40m

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

Mode-S 4BAB29 frequently asked

What is Mode-S code 4BAB29?
4BAB29 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JYI.
Where is Mode-S 4BAB29 registered?
Mode-S code 4BAB29 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAB29 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BAB29, octal 22725451, decimal 4,959,017.
What flights does 4BAB29 operate?
Mode-S 4BAB29 has broadcast 20 distinct callsigns, including THY849, THY845, THY8GS, THY848, THY9FU.