Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4BB073

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-LCS · BOEING 737 MAX 8

Hex
4BB073
Octal
22730163
Decimal
4,960,371
Country
TR
Tail
TC-LCS
Type
B38M
Broadcasting now · callsign THY646 · 33,000 ft
Flights observed
9
Distinct callsigns
5
Country
TR
Last broadcast
1d ago

Current position

4BB073 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BB073 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 5 distinct

Callsign Airline Flights Last seen
THY7XK - 2 2026-04-13
THY5AZ - 2 2026-04-13
THY597 - 2 2026-04-13
THY2RE - 2 2026-04-13
THY8DT - 1 2026-04-13

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-13 THY2RE - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 THY2RE - Apr 13, 19:15 UTCApr 13, 20:05 UTC50m
2026-04-13 THY8DT - Apr 13, 17:05 UTCApr 13, 18:05 UTC1h 0m
2026-04-13 THY7XK - Apr 13, 12:20 UTCApr 13, 14:15 UTC1h 55m
2026-04-13 THY7XK - Apr 13, 12:00 UTCApr 13, 12:15 UTC15m
2026-04-13 THY5AZ - Apr 13, 08:20 UTCApr 13, 10:25 UTC2h 5m
2026-04-13 THY5AZ - Apr 13, 08:00 UTCApr 13, 08:15 UTC15m
2026-04-13 THY597 - Apr 13, 01:00 UTCApr 13, 02:55 UTC1h 55m
2026-04-12 THY597 - Apr 12, 18:45 UTCApr 12, 19:30 UTC45m

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

Mode-S 4BB073 frequently asked

What is Mode-S code 4BB073?
4BB073 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LCS.
Where is Mode-S 4BB073 registered?
Mode-S code 4BB073 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB073 broadcasting right now?
Yes. Mode-S 4BB073 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB073, octal 22730163, decimal 4,960,371.
What flights does 4BB073 operate?
Mode-S 4BB073 has broadcast 5 distinct callsigns, including THY7XK, THY5AZ, THY597, THY2RE, THY8DT.