Apparatus

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sensors Mode-S transponder

4BA919

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JHY · BOEING 737-800

Hex
4BA919
Octal
22724431
Decimal
4,958,489
Country
TR
Tail
TC-JHY
Type
B738
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
368
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 4BA919.

Country allocation

The ICAO 24-bit address 4BA919 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
THY7MT Turkish Airlines 8 2026-06-30
THY7DB Turkish Airlines 6 2026-07-17
THY6XK Turkish Airlines 5 2026-05-30
THY6WQ Turkish Airlines 5 2026-05-30
THY6RZ Turkish Airlines 5 2026-06-17
THY8RJ - 4 2026-07-18
THY7ZA Turkish Airlines 4 2026-06-07
THY6EB - 4 2026-07-14
THY5VZ - 4 2026-07-14
THY4WF - 4 2026-07-06
THY4AQ - 4 2026-07-18
THY2WF Turkish Airlines 4 2026-06-07
THY2RA Turkish Airlines 4 2026-07-25
THY2QT - 4 2026-06-17
THY1VP - 4 2026-07-06
THY8YU Turkish Airlines 3 2026-07-17
THY8VN Turkish Airlines 3 2026-04-15
THY6BW - 3 2026-07-05
THY6882 Turkish Airlines 3 2026-04-15
THY5SY Turkish Airlines 3 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY5RD CDG → IST Jul 26, 18:20 UTCJul 26, 21:40 UTC3h 20m
2026-07-26 THY2FP CGN → IST Jul 26, 13:05 UTCJul 26, 15:30 UTC2h 25m
2026-07-26 THY4VR IST → CGN Jul 26, 08:50 UTCJul 26, 11:40 UTC2h 50m
2026-07-26 THY480 LED → IST Jul 26, 01:15 UTCJul 26, 02:55 UTC1h 40m
2026-07-25 THY479 IST → LED Jul 25, 19:00 UTCJul 25, 22:15 UTC3h 15m
2026-07-25 THY5ZC ADB → IST Jul 25, 15:45 UTCJul 25, 16:25 UTC40m
2026-07-25 THY9JV ORN → IST Jul 25, 12:35 UTCJul 25, 13:10 UTC35m
2026-07-25 THY2RA ESB → IST Jul 25, 09:50 UTCJul 25, 10:45 UTC55m
2026-07-25 THY4GM AYT → LED Jul 25, 07:40 UTCJul 25, 08:05 UTC25m
2026-07-24 THY8QD GYD → IST Jul 24, 22:50 UTCJul 25, 05:15 UTC6h 25m
2026-07-24 THY7VM IST → ZAG Jul 24, 19:10 UTCJul 24, 20:40 UTC1h 30m
2026-07-24 THY6VU IST → ADB Jul 24, 15:40 UTCJul 24, 17:25 UTC1h 45m
2026-07-24 THY7MC LJU → IST Jul 24, 12:00 UTCJul 24, 13:50 UTC1h 50m
2026-07-24 THY6ZG IST → LJU Jul 24, 09:10 UTCJul 24, 11:00 UTC1h 50m
2026-07-23 THY91S KYA → IST Jul 23, 18:45 UTCJul 23, 19:35 UTC50m
2026-07-23 THY1NA IST → KYA Jul 23, 16:35 UTCJul 23, 17:10 UTC35m
2026-07-22 THY2RE IST → PRN Jul 22, 19:50 UTCJul 22, 21:00 UTC1h 10m
2026-07-22 THY8DT - Jul 22, 17:30 UTCJul 22, 18:45 UTC1h 15m
2026-07-22 THY8RS - Jul 22, 13:55 UTCJul 22, 15:10 UTC1h 15m
2026-07-22 THY5GX - Jul 22, 11:45 UTCJul 22, 12:55 UTC1h 10m
2026-07-21 THY5TN IST → MAD Jul 21, 16:25 UTCJul 21, 20:50 UTC4h 25m
2026-07-21 THY2FW EDI → IST Jul 21, 10:10 UTCJul 21, 14:05 UTC3h 55m
2026-07-21 THY5SY MAN → IST Jul 21, 06:00 UTCJul 21, 08:20 UTC2h 20m
2026-07-20 THY5GW - Jul 20, 17:45 UTCJul 20, 20:25 UTC2h 40m
2026-07-20 THY9SF IST → BCN Jul 20, 06:10 UTCJul 20, 09:25 UTC3h 15m
2026-07-19 THY5TN IST → MAD Jul 19, 16:45 UTCJul 19, 20:35 UTC3h 50m
2026-07-19 THY395 BUS → IST Jul 19, 14:15 UTCJul 19, 14:35 UTC20m
2026-07-19 THY394 - Jul 19, 10:15 UTCJul 19, 10:45 UTC30m
2026-07-19 THY9FD - Jul 19, 03:45 UTCJul 19, 07:15 UTC3h 30m
2026-07-18 THY1KL HAM → IST Jul 18, 20:30 UTCJul 18, 23:10 UTC2h 40m
2026-07-18 THY91B - Jul 18, 16:30 UTCJul 18, 19:15 UTC2h 45m
2026-07-18 THY4AQ - Jul 18, 11:40 UTCJul 18, 12:15 UTC35m
2026-07-18 THY8RJ - Jul 18, 09:10 UTCJul 18, 09:35 UTC25m
2026-07-17 THY7DB IST → LED Jul 17, 16:59 UTCJul 17, 20:10 UTC3h 10m
2026-07-17 THY8PQ SAW → VIE Jul 17, 12:25 UTCJul 17, 12:55 UTC30m
2026-07-17 THY9YW - Jul 17, 10:20 UTCJul 17, 10:40 UTC20m
2026-07-17 THY8YU VIE → IST Jul 17, 06:20 UTCJul 17, 08:00 UTC1h 40m
2026-07-16 THY3AT - Jul 16, 17:49 UTCJul 16, 19:40 UTC1h 50m
2026-07-16 THY3DJ - Jul 16, 12:44 UTCJul 16, 16:09 UTC3h 25m
2026-07-16 THY1JB - Jul 16, 07:25 UTCJul 16, 11:15 UTC3h 50m
2026-07-15 THY8TV - Jul 15, 11:15 UTCJul 15, 13:35 UTC2h 20m
2026-07-15 THY2XR - Jul 15, 07:20 UTCJul 15, 09:50 UTC2h 30m
2026-07-14 THY479 - Jul 14, 19:20 UTCJul 15, 02:50 UTC7h 29m
2026-07-14 THY6EB - Jul 14, 16:10 UTCJul 14, 17:20 UTC1h 10m
2026-07-14 THY5VZ - Jul 14, 13:45 UTCJul 14, 14:55 UTC1h 10m
2026-07-14 THY4KQ - Jul 14, 08:15 UTCJul 14, 11:25 UTC3h 10m
2026-07-13 THY4RT - Jul 13, 22:25 UTCJul 14, 06:20 UTC7h 55m
2026-07-13 THY6EB - Jul 13, 16:00 UTCJul 13, 17:15 UTC1h 15m
2026-07-13 THY5VZ - Jul 13, 13:40 UTCJul 13, 14:55 UTC1h 15m
2026-07-13 THY6GD - Jul 13, 08:45 UTCJul 13, 11:15 UTC2h 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-JHY page for operator, model, and routing details .

Mode-S 4BA919 frequently asked

What is Mode-S code 4BA919?
4BA919 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JHY.
Where is Mode-S 4BA919 registered?
Mode-S code 4BA919 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA919 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BA919, octal 22724431, decimal 4,958,489.
What flights does 4BA919 operate?
Mode-S 4BA919 has broadcast 20 distinct callsigns, including THY7MT, THY7DB, THY6XK, THY6WQ, THY6RZ.