sensors Mode-S transponder

4BCDB2

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMR · BOEING 737 MAX 8

Hex
4BCDB2
Octal
22746662
Decimal
4,967,858
Country
TR
Tail
TC-SMR
Type
B38M
No current signal · last broadcast 18h ago
Flights observed
12
Distinct callsigns
7
Country
TR
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4BCDB2.

Country allocation

The ICAO 24-bit address 4BCDB2 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 7 distinct

Callsign Airline Flights Last seen
SXS7BY - 3 2026-04-13
SXS7HK - 2 2026-04-14
SXS6YM SunExpress 2 2026-04-13
SXS5VF - 2 2026-04-13
SXS9PG - 1 2026-04-13
SXS4HL SunExpress 1 2026-04-14
SXS2UM SunExpress 1 2026-04-12

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 SXS4HL ADB → STR Apr 14, 09:35 UTCApr 14, 11:05 UTC1h 30m
2026-04-14 SXS7HK - Apr 14, 07:10 UTCApr 14, 07:20 UTC10m
2026-04-14 SXS7HK - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-13 SXS5VF - Apr 13, 16:15 UTCApr 13, 19:50 UTC3h 35m
2026-04-13 SXS5VF - Apr 13, 16:00 UTCApr 13, 16:15 UTC15m
2026-04-13 SXS7BY - Apr 13, 12:20 UTCApr 13, 14:40 UTC2h 20m
2026-04-13 SXS7BY - Apr 13, 11:55 UTCApr 13, 14:40 UTC2h 45m
2026-04-13 SXS7BY - Apr 13, 10:20 UTCApr 13, 12:15 UTC1h 55m
2026-04-13 SXS9PG - Apr 13, 05:20 UTCApr 13, 08:00 UTC2h 40m
2026-04-13 SXS6YM ADB → CGN Apr 13, 00:20 UTCApr 13, 03:15 UTC2h 55m
2026-04-13 SXS6YM ADB → CGN Apr 13, 00:10 UTCApr 13, 03:15 UTC3h 5m
2026-04-12 SXS2UM AMS → ADB Apr 12, 18:45 UTCApr 12, 20:15 UTC1h 30m

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

Mode-S 4BCDB2 frequently asked

What is Mode-S code 4BCDB2?
4BCDB2 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMR.
Where is Mode-S 4BCDB2 registered?
Mode-S code 4BCDB2 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDB2 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCDB2, octal 22746662, decimal 4,967,858.
What flights does 4BCDB2 operate?
Mode-S 4BCDB2 has broadcast 7 distinct callsigns, including SXS7BY, SXS7HK, SXS6YM, SXS5VF, SXS9PG.