Apparatus

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sensors Mode-S transponder

4B850D

ICAO 24-bit transponder address · allocated to Turkey

Hex
4B850D
Octal
22702415
Decimal
4,949,261
Country
TR
No current signal · last broadcast 1d ago
Flights observed
153
Distinct callsigns
1
Country
TR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4B850D.

Country allocation

The ICAO 24-bit address 4B850D 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 1 distinct

Callsign Airline Flights Last seen
TCAHM - 152 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 TCAHM - Jul 19, 11:35 UTCJul 19, 12:25 UTC50m
2026-07-19 TCAHM - Jul 19, 10:10 UTCJul 19, 10:20 UTC10m
2026-07-19 TCAHM - Jul 19, 07:30 UTCJul 19, 08:15 UTC45m
2026-07-18 TCAHM - Jul 18, 09:15 UTCJul 18, 09:25 UTC10m
2026-07-18 TCAHM - Jul 18, 07:20 UTCJul 18, 08:00 UTC40m
2026-07-18 TCAHM - Jul 18, 05:10 UTCJul 18, 05:55 UTC45m
2026-07-17 TCAHM - Jul 17, 09:30 UTCJul 17, 09:40 UTC10m
2026-07-16 TCAHM - Jul 16, 15:25 UTCJul 16, 15:35 UTC10m
2026-07-16 TCAHM - Jul 16, 11:50 UTCJul 16, 12:25 UTC35m
2026-07-16 TCAHM - Jul 16, 11:05 UTCJul 16, 11:15 UTC10m
2026-07-16 TCAHM - Jul 16, 07:15 UTCJul 16, 07:25 UTC10m
2026-07-15 TCAHM - Jul 15, 10:50 UTCJul 15, 11:20 UTC30m
2026-07-15 TCAHM - Jul 15, 09:40 UTCJul 15, 09:55 UTC15m
2026-07-15 TCAHM - Jul 15, 08:30 UTCJul 15, 09:05 UTC35m
2026-07-15 TCAHM - Jul 15, 07:00 UTCJul 15, 07:35 UTC35m
2026-07-15 TCAHM - Jul 15, 05:15 UTCJul 15, 05:25 UTC10m
2026-07-14 TCAHM - Jul 14, 11:40 UTCJul 14, 11:50 UTC10m
2026-07-13 TCAHM - Jul 13, 09:45 UTCJul 13, 09:55 UTC10m
2026-07-13 TCAHM - Jul 13, 07:01 UTCJul 13, 07:40 UTC40m
2026-07-13 TCAHM - Jul 13, 05:40 UTCJul 13, 06:05 UTC25m
2026-07-12 TCAHM - Jul 12, 15:01 UTCJul 12, 15:10 UTC10m
2026-07-12 TCAHM - Jul 12, 12:10 UTCJul 12, 12:20 UTC10m
2026-07-12 TCAHM - Jul 12, 11:10 UTCJul 12, 11:20 UTC10m
2026-07-12 TCAHM - Jul 12, 09:35 UTCJul 12, 09:45 UTC10m
2026-07-12 TCAHM - Jul 12, 06:45 UTCJul 12, 07:15 UTC30m
2026-07-12 TCAHM - Jul 12, 04:55 UTCJul 12, 05:55 UTC1h 0m
2026-07-11 TCAHM - Jul 11, 13:15 UTCJul 11, 13:25 UTC10m
2026-07-11 TCAHM - Jul 11, 10:35 UTCJul 11, 12:45 UTC2h 10m
2026-07-10 TCAHM - Jul 10, 14:10 UTCJul 10, 15:05 UTC55m
2026-07-10 TCAHM - Jul 10, 10:10 UTCJul 10, 10:45 UTC35m
2026-07-07 TCAHM - Jul 7, 10:00 UTCJul 7, 10:10 UTC10m
2026-07-07 TCAHM - Jul 7, 08:35 UTCJul 7, 08:40 UTC5m
2026-07-06 TCAHM - Jul 6, 14:05 UTCJul 6, 14:40 UTC35m
2026-07-06 TCAHM - Jul 6, 12:05 UTCJul 6, 12:45 UTC40m
2026-07-06 TCAHM - Jul 6, 07:40 UTCJul 6, 08:20 UTC40m
2026-07-06 TCAHM - Jul 6, 04:20 UTCJul 6, 05:00 UTC40m
2026-07-04 TCAHM - Jul 4, 10:00 UTCJul 4, 10:10 UTC10m
2026-07-04 TCAHM - Jul 4, 08:25 UTCJul 4, 08:50 UTC25m
2026-07-04 TCAHM - Jul 4, 05:40 UTCJul 4, 06:25 UTC45m
2026-07-03 TCAHM - Jul 3, 06:15 UTCJul 3, 07:00 UTC45m
2026-07-02 TCAHM - Jul 2, 13:05 UTCJul 2, 13:30 UTC25m
2026-07-02 TCAHM - Jul 2, 11:55 UTCJul 2, 12:05 UTC10m
2026-07-02 TCAHM - Jul 2, 08:55 UTCJul 2, 09:05 UTC10m
2026-07-02 TCAHM - Jul 2, 04:25 UTCJul 2, 05:40 UTC1h 15m
2026-07-01 TCAHM - Jul 1, 07:25 UTCJul 1, 07:35 UTC10m
2026-07-01 TCAHM - Jul 1, 06:05 UTCJul 1, 06:20 UTC15m
2026-06-30 TCAHM - Jun 30, 04:45 UTCJun 30, 04:55 UTC10m
2026-06-29 TCAHM - Jun 29, 06:09 UTCJun 29, 07:25 UTC1h 15m
2026-06-29 TCAHM - Jun 29, 04:55 UTCJun 29, 05:24 UTC30m
2026-06-27 TCAHM - Jun 27, 07:55 UTCJun 27, 08:05 UTC10m

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.

Mode-S 4B850D frequently asked

What is Mode-S code 4B850D?
4B850D is an ICAO 24-bit transponder address. Allocated to Turkey.
Where is Mode-S 4B850D registered?
Mode-S code 4B850D is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B850D broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B850D, octal 22702415, decimal 4,949,261.
What flights does 4B850D operate?
Mode-S 4B850D has broadcast 1 distinct callsign, including TCAHM.