Apparatus

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sensors Mode-S transponder

4BA912

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JHR · BOEING 737-800

Hex
4BA912
Octal
22724422
Decimal
4,958,482
Country
TR
Tail
TC-JHR
Type
B738
No current signal · last broadcast Jul 26, 20:20 UTC
Flights observed
363
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 20:20 UTC

Last known position

Most recent position reported by Mode-S 4BA912.

Country allocation

The ICAO 24-bit address 4BA912 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
THY7DB Turkish Airlines 14 2026-07-26
THY7MT - 10 2026-07-22
THY5LS Turkish Airlines 7 2026-05-30
THY3DW Turkish Airlines 7 2026-05-29
THY1SL Turkish Airlines 7 2026-07-25
THY479 Turkish Airlines 6 2026-07-22
THY9XH Turkish Airlines 5 2026-05-05
THY7BM - 5 2026-07-17
THY6805 - 5 2026-04-16
THY4PM Turkish Airlines 5 2026-07-17
THY4BZ Turkish Airlines 5 2026-05-05
THY9YQ - 4 2026-07-16
THY1316 - 4 2026-07-07
THY9YD - 3 2026-07-05
THY7DH - 3 2026-06-29
THY6ZN - 3 2026-07-07
THY5HK - 3 2026-06-29
THY4RT - 3 2026-06-19
THY3PX Turkish Airlines 3 2026-07-03
THY3HU - 3 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY7DB IST → LED Jul 26, 17:15 UTCJul 26, 20:20 UTC3h 5m
2026-07-26 THY1YW ZRH → IST Jul 26, 05:25 UTCJul 26, 13:05 UTC7h 41m
2026-07-25 THY1HU MXP → IST Jul 25, 23:10 UTCJul 26, 02:35 UTC3h 25m
2026-07-25 THY9TU IST → MAD Jul 25, 17:25 UTCJul 25, 18:15 UTC50m
2026-07-25 THY9EH IST → DLM Jul 25, 15:05 UTCJul 25, 15:45 UTC40m
2026-07-25 THY1SL IST → ECN Jul 25, 05:15 UTCJul 25, 13:00 UTC7h 45m
2026-07-24 THY3XM - Jul 24, 14:30 UTCJul 24, 17:55 UTC3h 25m
2026-07-24 THY2KF CLJ → IST Jul 24, 08:35 UTCJul 24, 12:55 UTC4h 20m
2026-07-23 THY7DB IST → LED Jul 23, 17:00 UTCJul 24, 00:45 UTC7h 45m
2026-07-23 THY9TF AMS → SAW Jul 23, 13:30 UTCJul 23, 15:25 UTC1h 55m
2026-07-23 THY1GP IST → BLQ Jul 23, 09:45 UTCJul 23, 11:55 UTC2h 10m
2026-07-22 THY480 LED → IST Jul 22, 23:45 UTCJul 23, 03:00 UTC3h 15m
2026-07-22 THY479 IST → LED Jul 22, 19:00 UTCJul 22, 22:05 UTC3h 5m
2026-07-22 THY8ZF LHR → IST Jul 22, 04:20 UTCJul 22, 14:55 UTC10h 35m
2026-07-22 THY7MT - Jul 22, 03:05 UTCJul 22, 03:15 UTC10m
2026-07-21 THY7MT - Jul 21, 22:30 UTCJul 22, 02:15 UTC3h 45m
2026-07-21 THY3JK LJU → IST Jul 21, 18:55 UTCJul 21, 20:35 UTC1h 40m
2026-07-21 THY9BX ZAG → IST Jul 21, 15:35 UTCJul 21, 17:30 UTC1h 55m
2026-07-21 THY1SL IST → ECN Jul 21, 05:20 UTCJul 21, 13:05 UTC7h 45m
2026-07-20 THY479 IST → LED Jul 20, 19:10 UTCJul 20, 22:10 UTC3h 0m
2026-07-20 THY9UC IST → FRA Jul 20, 16:30 UTCJul 20, 17:05 UTC35m
2026-07-20 THY1SN - Jul 20, 14:15 UTCJul 20, 14:35 UTC20m
2026-07-20 THY4KQ ASR → IST Jul 20, 08:15 UTCJul 20, 11:20 UTC3h 5m
2026-07-20 THY1CA - Jul 20, 05:15 UTCJul 20, 05:50 UTC35m
2026-07-20 THY2BK - Jul 20, 03:15 UTCJul 20, 03:40 UTC25m
2026-07-19 THY7DB IST → LED Jul 19, 17:00 UTCJul 20, 00:50 UTC7h 50m
2026-07-18 THY479 IST → LED Jul 18, 19:00 UTCJul 19, 03:10 UTC8h 10m
2026-07-18 THY6EB - Jul 18, 15:50 UTCJul 18, 17:00 UTC1h 10m
2026-07-18 THY5VZ - Jul 18, 13:35 UTCJul 18, 14:50 UTC1h 15m
2026-07-18 THY3AY - Jul 18, 04:50 UTCJul 18, 07:30 UTC2h 40m
2026-07-17 THY4FB - Jul 17, 19:05 UTCJul 17, 21:15 UTC2h 10m
2026-07-17 THY7QZ - Jul 17, 13:50 UTCJul 17, 15:49 UTC2h 0m
2026-07-17 THY3BJ IST → MAN Jul 17, 12:19 UTCJul 17, 12:35 UTC15m
2026-07-17 THY3BJ IST → MAN Jul 17, 10:50 UTCJul 17, 11:10 UTC20m
2026-07-17 THY7BM - Jul 17, 07:44 UTCJul 17, 08:54 UTC1h 10m
2026-07-17 THY4PM ASR → IST Jul 17, 05:30 UTCJul 17, 06:29 UTC1h 0m
2026-07-16 THY9YQ - Jul 16, 23:40 UTCJul 17, 01:09 UTC1h 30m
2026-07-16 THY7DB - Jul 16, 17:20 UTCJul 16, 20:25 UTC3h 5m
2026-07-16 THY5033 - Jul 16, 06:10 UTCJul 16, 13:54 UTC7h 45m
2026-07-15 THY479 - Jul 15, 19:10 UTCJul 16, 02:55 UTC7h 45m
2026-07-15 THY1VT - Jul 15, 13:25 UTCJul 15, 15:35 UTC2h 10m
2026-07-15 THY1LB - Jul 15, 09:35 UTCJul 15, 12:05 UTC2h 30m
2026-07-14 THY7MT - Jul 14, 22:30 UTCJul 15, 06:15 UTC7h 44m
2026-07-14 THY67W - Jul 14, 18:00 UTCJul 14, 20:05 UTC2h 5m
2026-07-14 THY5ST - Jul 14, 14:20 UTCJul 14, 16:35 UTC2h 15m
2026-07-14 THY46P - Jul 14, 09:45 UTCJul 14, 12:00 UTC2h 15m
2026-07-14 THY6EU - Jul 14, 05:20 UTCJul 14, 07:55 UTC2h 35m
2026-07-13 THY479 - Jul 13, 19:05 UTCJul 14, 02:55 UTC7h 50m
2026-07-13 THY4MZ - Jul 13, 12:35 UTCJul 13, 16:20 UTC3h 45m
2026-07-13 THY6ER - Jul 13, 05:20 UTCJul 13, 09:15 UTC3h 55m

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

Mode-S 4BA912 frequently asked

What is Mode-S code 4BA912?
4BA912 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JHR.
Where is Mode-S 4BA912 registered?
Mode-S code 4BA912 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA912 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 4BA912, octal 22724422, decimal 4,958,482.
What flights does 4BA912 operate?
Mode-S 4BA912 has broadcast 20 distinct callsigns, including THY7DB, THY7MT, THY5LS, THY3DW, THY1SL.