Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4B850A

ICAO 24-bit transponder address · allocated to Turkey

Hex
4B850A
Octal
22702412
Decimal
4,949,258
Country
TR
No current signal · last broadcast 14h ago
Flights observed
128
Distinct callsigns
1
Country
TR
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4B850A.

Country allocation

The ICAO 24-bit address 4B850A 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
TCAHJ - 128 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 TCAHJ - Jul 4, 09:40 UTCJul 4, 10:00 UTC20m
2026-07-04 TCAHJ - Jul 4, 07:45 UTCJul 4, 08:50 UTC1h 5m
2026-07-04 TCAHJ - Jul 4, 05:50 UTCJul 4, 06:50 UTC1h 0m
2026-07-03 TCAHJ - Jul 3, 08:30 UTCJul 3, 09:00 UTC30m
2026-07-03 TCAHJ - Jul 3, 06:40 UTCJul 3, 07:10 UTC30m
2026-07-02 TCAHJ - Jul 2, 13:45 UTCJul 2, 13:55 UTC10m
2026-07-02 TCAHJ - Jul 2, 12:25 UTCJul 2, 12:35 UTC10m
2026-07-02 TCAHJ - Jul 2, 10:35 UTCJul 2, 10:45 UTC10m
2026-07-02 TCAHJ - Jul 2, 07:30 UTCJul 2, 08:05 UTC35m
2026-07-01 TCAHJ - Jul 1, 05:25 UTCJul 1, 05:35 UTC10m
2026-06-29 TCAHJ - Jun 29, 11:55 UTCJun 29, 12:05 UTC10m
2026-06-29 TCAHJ - Jun 29, 11:14 UTCJun 29, 11:25 UTC10m
2026-06-29 TCAHJ - Jun 29, 09:40 UTCJun 29, 10:29 UTC50m
2026-06-29 TCAHJ - Jun 29, 05:50 UTCJun 29, 05:59 UTC10m
2026-06-27 TCAHJ - Jun 27, 15:10 UTCJun 27, 16:00 UTC50m
2026-06-27 TCAHJ - Jun 27, 13:09 UTCJun 27, 13:55 UTC45m
2026-06-27 TCAHJ - Jun 27, 08:05 UTCJun 27, 09:00 UTC55m
2026-06-27 TCAHJ - Jun 27, 05:29 UTCJun 27, 05:39 UTC10m
2026-06-26 TCAHJ - Jun 26, 11:55 UTCJun 26, 12:05 UTC10m
2026-06-26 TCAHJ - Jun 26, 09:39 UTCJun 26, 10:15 UTC35m
2026-06-26 TCAHJ - Jun 26, 08:05 UTCJun 26, 08:34 UTC30m
2026-06-26 TCAHJ - Jun 26, 06:39 UTCJun 26, 06:54 UTC15m
2026-06-25 TCAHJ - Jun 25, 14:59 UTCJun 25, 15:10 UTC10m
2026-06-25 TCAHJ - Jun 25, 13:24 UTCJun 25, 14:04 UTC40m
2026-06-25 TCAHJ - Jun 25, 09:40 UTCJun 25, 09:50 UTC10m
2026-06-25 TCAHJ - Jun 25, 07:25 UTCJun 25, 07:34 UTC10m
2026-06-24 TCAHJ - Jun 24, 10:35 UTCJun 24, 11:05 UTC30m
2026-06-24 TCAHJ - Jun 24, 09:45 UTCJun 24, 09:55 UTC10m
2026-06-24 TCAHJ - Jun 24, 07:54 UTCJun 24, 08:04 UTC10m
2026-06-24 TCAHJ - Jun 24, 06:25 UTCJun 24, 06:59 UTC35m
2026-06-23 TCAHJ - Jun 23, 14:19 UTCJun 23, 14:29 UTC10m
2026-06-23 TCAHJ - Jun 23, 08:50 UTCJun 23, 09:40 UTC50m
2026-06-23 TCAHJ - Jun 23, 06:04 UTCJun 23, 06:44 UTC40m
2026-06-22 TCAHJ - Jun 22, 12:05 UTCJun 22, 12:44 UTC40m
2026-06-22 TCAHJ - Jun 22, 09:24 UTCJun 22, 10:05 UTC40m
2026-06-22 TCAHJ - Jun 22, 07:45 UTCJun 22, 08:35 UTC50m
2026-06-22 TCAHJ - Jun 22, 05:29 UTCJun 22, 06:10 UTC40m
2026-06-22 TCAHJ - Jun 22, 04:49 UTCJun 22, 04:59 UTC10m
2026-06-21 TCAHJ - Jun 21, 13:24 UTCJun 21, 14:19 UTC55m
2026-06-21 TCAHJ - Jun 21, 07:49 UTCJun 21, 07:59 UTC10m
2026-06-19 TCAHJ - Jun 19, 10:09 UTCJun 19, 10:19 UTC10m
2026-06-19 TCAHJ - Jun 19, 07:54 UTCJun 19, 08:04 UTC10m
2026-06-19 TCAHJ - Jun 19, 05:45 UTCJun 19, 05:54 UTC10m
2026-06-18 TCAHJ - Jun 18, 14:05 UTCJun 18, 14:15 UTC10m
2026-06-18 TCAHJ - Jun 18, 11:20 UTCJun 18, 11:55 UTC35m
2026-06-18 TCAHJ - Jun 18, 10:05 UTCJun 18, 10:25 UTC20m
2026-06-18 TCAHJ - Jun 18, 07:50 UTCJun 18, 08:25 UTC35m
2026-06-18 TCAHJ - Jun 18, 04:55 UTCJun 18, 05:35 UTC40m
2026-06-17 TCAHJ - Jun 17, 11:50 UTCJun 17, 12:10 UTC20m
2026-06-17 TCAHJ - Jun 17, 08:35 UTCJun 17, 10:20 UTC1h 45m

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 4B850A frequently asked

What is Mode-S code 4B850A?
4B850A is an ICAO 24-bit transponder address. Allocated to Turkey.
Where is Mode-S 4B850A registered?
Mode-S code 4B850A is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B850A broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B850A, octal 22702412, decimal 4,949,258.
What flights does 4B850A operate?
Mode-S 4B850A has broadcast 1 distinct callsign, including TCAHJ.