sensors Mode-S transponder

4BCDA9

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMI · BOEING 737 MAX 8

Hex
4BCDA9
Octal
22746651
Decimal
4,967,849
Country
TR
Tail
TC-SMI
Type
B38M
No current signal · last broadcast 18h ago
Flights observed
10
Distinct callsigns
6
Country
TR
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4BCDA9.

Country allocation

The ICAO 24-bit address 4BCDA9 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
SXS4DQ SunExpress 3 2026-04-13
SXS9LQ - 2 2026-04-14
SXS8HN - 2 2026-04-14
SXS7XF SunExpress 1 2026-04-12
SXS7TL - 1 2026-04-13
SXS6TK - 1 2026-04-12

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 SXS8HN - Apr 14, 09:10 UTCApr 14, 11:05 UTC1h 55m
2026-04-14 SXS8HN - Apr 14, 08:50 UTCApr 14, 09:05 UTC15m
2026-04-14 SXS9LQ - Apr 14, 07:10 UTCApr 14, 07:25 UTC15m
2026-04-14 SXS9LQ - Apr 14, 05:15 UTCApr 14, 07:10 UTC1h 55m
2026-04-13 SXS7TL - Apr 13, 08:25 UTCApr 13, 11:35 UTC3h 10m
2026-04-13 SXS4DQ DLM → DUS Apr 13, 04:20 UTCApr 13, 06:50 UTC2h 30m
2026-04-13 SXS4DQ DLM → DUS Apr 13, 03:55 UTCApr 13, 06:50 UTC2h 55m
2026-04-13 SXS4DQ DLM → DUS Apr 13, 03:40 UTCApr 13, 04:15 UTC35m
2026-04-12 SXS6TK - Apr 12, 20:00 UTCApr 12, 20:15 UTC15m
2026-04-12 SXS7XF DLM → LGW Apr 12, 17:15 UTCApr 12, 18:50 UTC1h 35m

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

Mode-S 4BCDA9 frequently asked

What is Mode-S code 4BCDA9?
4BCDA9 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMI.
Where is Mode-S 4BCDA9 registered?
Mode-S code 4BCDA9 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDA9 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 4BCDA9, octal 22746651, decimal 4,967,849.
What flights does 4BCDA9 operate?
Mode-S 4BCDA9 has broadcast 6 distinct callsigns, including SXS4DQ, SXS9LQ, SXS8HN, SXS7XF, SXS7TL.