sensors Mode-S transponder

4BAA49

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JRI · AIRBUS A-321

Hex
4BAA49
Octal
22725111
Decimal
4,958,793
Country
TR
Tail
TC-JRI
Type
A321
No current signal · last broadcast 17h ago
Flights observed
6
Distinct callsigns
4
Country
TR
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 4BAA49.

Country allocation

The ICAO 24-bit address 4BAA49 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 4 distinct

Callsign Airline Flights Last seen
THY5125 - 2 2026-04-14
THY5123 - 2 2026-04-13
THY5122 Turkish Airlines 1 2026-04-13
THY5117 - 1 2026-04-12

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 THY5125 - Apr 14, 09:10 UTCApr 14, 10:00 UTC50m
2026-04-14 THY5125 - Apr 14, 08:25 UTCApr 14, 09:05 UTC40m
2026-04-13 THY5123 - Apr 13, 16:15 UTCApr 13, 17:30 UTC1h 15m
2026-04-13 THY5123 - Apr 13, 15:55 UTCApr 13, 16:15 UTC20m
2026-04-13 THY5122 ESB → MED Apr 13, 10:00 UTCApr 13, 11:15 UTC1h 15m
2026-04-12 THY5117 - Apr 12, 18:35 UTCApr 12, 20:10 UTC1h 35m

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

Mode-S 4BAA49 frequently asked

What is Mode-S code 4BAA49?
4BAA49 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JRI.
Where is Mode-S 4BAA49 registered?
Mode-S code 4BAA49 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA49 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BAA49, octal 22725111, decimal 4,958,793.
What flights does 4BAA49 operate?
Mode-S 4BAA49 has broadcast 4 distinct callsigns, including THY5125, THY5123, THY5122, THY5117.