sensors Mode-S transponder

4B83A5

ICAO 24-bit transponder address · allocated to Turkey

Hex
4B83A5
Octal
22701645
Decimal
4,948,901
Country
TR
Type
BTB2
No current signal · last broadcast 1d ago
Flights observed
3
Distinct callsigns
2
Country
TR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4B83A5.

Country allocation

The ICAO 24-bit address 4B83A5 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 2 distinct

Callsign Airline Flights Last seen
TCSG573 - 2 2026-04-27
NULL - 1 2026-04-19

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-27 TCSG573 - Apr 27, 08:15 UTCApr 27, 18:50 UTC10h 35m
2026-04-24 TCSG573 - Apr 24, 07:55 UTCApr 24, 17:40 UTC9h 45m
2026-04-19 NULL - Apr 19, 08:20 UTCApr 19, 17:35 UTC9h 15m

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 4B83A5 frequently asked

What is Mode-S code 4B83A5?
4B83A5 is an ICAO 24-bit transponder address. Allocated to Turkey.
Where is Mode-S 4B83A5 registered?
Mode-S code 4B83A5 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B83A5 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 4B83A5, octal 22701645, decimal 4,948,901.
What flights does 4B83A5 operate?
Mode-S 4B83A5 has broadcast 2 distinct callsigns, including TCSG573, NULL.