sensors Mode-S transponder

4BB18F

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-LLO · BOEING 787-9 Dreamliner

Hex
4BB18F
Octal
22730617
Decimal
4,960,655
Country
TR
Tail
TC-LLO
Type
B789
Broadcasting now · callsign THY41J · 37,000 ft
Flights observed
6
Distinct callsigns
4
Country
TR
Last broadcast
16h ago

Current position

4BB18F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BB18F 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
THY4JD Turkish Airlines 2 2026-04-14
THY300 - 2 2026-04-13
THY301 Turkish Airlines 1 2026-04-13
THY224 - 1 2026-04-12

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 THY4JD IST → MIA Apr 14, 07:55 UTCApr 14, 08:20 UTC25m
2026-04-14 THY4JD IST → MIA Apr 14, 05:15 UTCApr 14, 06:35 UTC1h 20m
2026-04-13 THY301 NRT → IST Apr 13, 12:40 UTCApr 13, 14:40 UTC2h 0m
2026-04-13 THY300 - Apr 13, 08:20 UTCApr 13, 09:50 UTC1h 30m
2026-04-13 THY300 - Apr 13, 00:40 UTCApr 13, 01:15 UTC35m
2026-04-12 THY224 - Apr 12, 17:15 UTCApr 12, 18:25 UTC1h 10m

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

Mode-S 4BB18F frequently asked

What is Mode-S code 4BB18F?
4BB18F is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LLO.
Where is Mode-S 4BB18F registered?
Mode-S code 4BB18F is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB18F broadcasting right now?
Yes. Mode-S 4BB18F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB18F, octal 22730617, decimal 4,960,655.
What flights does 4BB18F operate?
Mode-S 4BB18F has broadcast 4 distinct callsigns, including THY4JD, THY300, THY301, THY224.