sensors Mode-S transponder

4BCDBA

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMZ · BOEING 737 MAX 8

Hex
4BCDBA
Octal
22746672
Decimal
4,967,866
Country
TR
Tail
TC-SMZ
Type
B38M
No current signal · last broadcast 14h ago
Flights observed
13
Distinct callsigns
6
Country
TR
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4BCDBA.

Country allocation

The ICAO 24-bit address 4BCDBA 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 6 distinct

Callsign Airline Flights Last seen
SXS5BV - 3 2026-04-13
SXS1 - 3 2026-04-13
SXS4QE SunExpress 2 2026-04-13
SXS3AN - 2 2026-04-13
SXS2 - 2 2026-04-14
SXS4QN - 1 2026-04-12

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 SXS2 - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 SXS2 - Apr 14, 06:15 UTCApr 14, 07:10 UTC55m
2026-04-13 SXS3AN - Apr 13, 19:50 UTCApr 13, 21:40 UTC1h 50m
2026-04-13 SXS3AN - Apr 13, 19:10 UTCApr 13, 20:10 UTC1h 0m
2026-04-13 SXS1 - Apr 13, 16:15 UTCApr 13, 17:15 UTC1h 0m
2026-04-13 SXS1 - Apr 13, 15:50 UTCApr 13, 17:15 UTC1h 25m
2026-04-13 SXS1 - Apr 13, 14:05 UTCApr 13, 16:15 UTC2h 10m
2026-04-13 SXS5BV - Apr 13, 12:20 UTCApr 13, 12:35 UTC15m
2026-04-13 SXS5BV - Apr 13, 11:55 UTCApr 13, 12:35 UTC40m
2026-04-13 SXS5BV - Apr 13, 09:25 UTCApr 13, 12:15 UTC2h 50m
2026-04-13 SXS4QE AYT → BRE Apr 13, 07:55 UTCApr 13, 08:05 UTC10m
2026-04-13 SXS4QE AYT → BRE Apr 13, 04:30 UTCApr 13, 08:05 UTC3h 35m
2026-04-12 SXS4QN - Apr 12, 17:15 UTCApr 12, 20:15 UTC3h 0m

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

Mode-S 4BCDBA frequently asked

What is Mode-S code 4BCDBA?
4BCDBA is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMZ.
Where is Mode-S 4BCDBA registered?
Mode-S code 4BCDBA is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDBA 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 4BCDBA, octal 22746672, decimal 4,967,866.
What flights does 4BCDBA operate?
Mode-S 4BCDBA has broadcast 6 distinct callsigns, including SXS5BV, SXS1, SXS4QE, SXS3AN, SXS2.