Apparatus

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sensors Mode-S transponder

4BCDA4

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMD · BOEING 737 MAX 8

Hex
4BCDA4
Octal
22746644
Decimal
4,967,844
Country
TR
Tail
TC-SMD
Type
B38M
No current signal · last broadcast Jul 26, 22:25 UTC
Flights observed
462
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 22:25 UTC

Last known position

Most recent position reported by Mode-S 4BCDA4.

Country allocation

The ICAO 24-bit address 4BCDA4 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 20 distinct

Callsign Airline Flights Last seen
SXS6DN SunExpress 10 2026-07-26
SXS6MX SunExpress 9 2026-07-26
SXS5DL - 9 2026-07-13
SXS1BQ - 9 2026-07-14
SXS5EY SunExpress 7 2026-05-29
SXS51C SunExpress 7 2026-07-20
SXS2HQ - 7 2026-07-20
SXS9UL - 6 2026-07-07
SXS5WD SunExpress 6 2026-07-25
SXS58U - 6 2026-07-07
SXS4WY SunExpress 6 2026-04-18
SXS11A SunExpress 6 2026-05-29
SXS9WA SunExpress 5 2026-07-24
SXS9LQ - 5 2026-07-18
SXS8HN - 5 2026-07-18
SXS7TL - 5 2026-06-29
SXS7NJ - 5 2026-07-22
SXS4WM - 5 2026-07-23
SXS2BB SunExpress 5 2026-06-09
SXS93H - 4 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SXS6DN BHX → DLM Jul 26, 19:00 UTCJul 26, 22:25 UTC3h 25m
2026-07-26 SXS6MX DLM → BHX Jul 26, 13:25 UTCJul 26, 17:45 UTC4h 20m
2026-07-26 SXS6PL HAM → DLM Jul 26, 09:00 UTCJul 26, 11:45 UTC2h 45m
2026-07-26 SXS1YL DLM → HAM Jul 26, 04:25 UTCJul 26, 07:45 UTC3h 21m
2026-07-25 SXS5WD MAN → DLM Jul 25, 19:05 UTCJul 25, 22:40 UTC3h 35m
2026-07-25 SXS5AR ASR → FRA Jul 25, 13:10 UTCJul 25, 17:35 UTC4h 25m
2026-07-25 SXS9LY VIE → AYT Jul 25, 08:55 UTCJul 25, 11:25 UTC2h 30m
2026-07-25 SXS9HN AYT → VIE Jul 25, 05:00 UTCJul 25, 07:20 UTC2h 20m
2026-07-24 SXS8XT MAN → AYT Jul 24, 17:50 UTCJul 24, 21:35 UTC3h 45m
2026-07-24 SXS7LK - Jul 24, 11:45 UTCJul 24, 16:15 UTC4h 30m
2026-07-24 SXS3EL VAN → AYT Jul 24, 05:55 UTCJul 24, 10:25 UTC4h 30m
2026-07-24 SXS9WA PAD → AYT Jul 24, 00:15 UTCJul 24, 03:05 UTC2h 50m
2026-07-23 SXS4WM - Jul 23, 19:50 UTCJul 23, 23:05 UTC3h 15m
2026-07-23 SXS7JZ MUC → AYT Jul 23, 15:20 UTCJul 23, 17:45 UTC2h 25m
2026-07-23 SXS37Q AYT → MUC Jul 23, 10:45 UTCJul 23, 13:50 UTC3h 5m
2026-07-23 SXS6DP VIE → AYT Jul 23, 06:45 UTCJul 23, 08:55 UTC2h 10m
2026-07-23 SXS43G AYT → VIE Jul 23, 02:55 UTCJul 23, 05:25 UTC2h 30m
2026-07-22 SXS14E FMO → AYT Jul 22, 22:40 UTCJul 23, 01:35 UTC2h 55m
2026-07-22 SXS6PZ AYT → FMO Jul 22, 18:00 UTCJul 22, 21:30 UTC3h 30m
2026-07-22 SXS7NJ - Jul 22, 12:15 UTCJul 22, 16:20 UTC4h 5m
2026-07-21 SXS3FP CGN → AYT Jul 21, 23:50 UTCJul 22, 02:55 UTC3h 5m
2026-07-21 SXS3ZX - Jul 21, 19:10 UTCJul 21, 22:45 UTC3h 35m
2026-07-21 SXS7NJ DUB → AYT Jul 21, 12:50 UTCJul 21, 16:50 UTC4h 0m
2026-07-21 SXS8NU AYT → DUB Jul 21, 05:40 UTCJul 21, 10:20 UTC4h 40m
2026-07-21 SXS6CH HAJ → AYT Jul 21, 01:25 UTCJul 21, 04:15 UTC2h 50m
2026-07-20 SXS4BD AYT → NUE Jul 20, 21:05 UTCJul 21, 00:05 UTC2h 59m
2026-07-20 SXS8JE BER → BJV Jul 20, 16:55 UTCJul 20, 19:40 UTC2h 45m
2026-07-20 SXS5ET AYT → ZRH Jul 20, 12:20 UTCJul 20, 15:35 UTC3h 15m
2026-07-20 SXS2HQ DUS → AYT Jul 20, 07:35 UTCJul 20, 10:40 UTC3h 5m
2026-07-20 SXS51C ZRH → AYT Jul 20, 02:40 UTCJul 20, 06:10 UTC3h 30m
2026-07-19 SXS9SV LGW → AYT Jul 19, 17:40 UTCJul 19, 21:15 UTC3h 35m
2026-07-19 SXS6FK AYT → LGW Jul 19, 11:50 UTCJul 19, 16:15 UTC4h 25m
2026-07-19 SXS4TM CGN → AYT Jul 19, 05:55 UTCJul 19, 09:05 UTC3h 10m
2026-07-19 SXS8MH SZF → CGN Jul 19, 02:00 UTCJul 19, 04:20 UTC2h 20m
2026-07-18 SXS2GX - Jul 18, 19:10 UTCJul 18, 22:10 UTC3h 0m
2026-07-18 SXS1KH - Jul 18, 14:05 UTCJul 18, 17:35 UTC3h 30m
2026-07-18 SXS8HN HAM → AYT Jul 18, 09:15 UTCJul 18, 12:40 UTC3h 25m
2026-07-18 SXS9LQ - Jul 18, 04:45 UTCJul 18, 08:10 UTC3h 25m
2026-07-17 SXS3SB ZRH → AYT Jul 17, 19:15 UTCJul 17, 21:50 UTC2h 35m
2026-07-17 SXS48T - Jul 17, 14:39 UTCJul 17, 18:00 UTC3h 20m
2026-07-17 SXS2YJ - Jul 17, 09:30 UTCJul 17, 13:00 UTC3h 30m
2026-07-17 SXS9GE - Jul 17, 04:25 UTCJul 17, 07:30 UTC3h 5m
2026-07-16 SXS7FW - Jul 16, 23:49 UTCJul 17, 02:39 UTC2h 50m
2026-07-16 SXS1EN - Jul 16, 18:44 UTCJul 16, 22:05 UTC3h 20m
2026-07-16 SXS7NJ - Jul 16, 11:50 UTCJul 16, 15:55 UTC4h 5m
2026-07-16 SXS8NU - Jul 16, 05:40 UTCJul 16, 10:35 UTC4h 55m
2026-07-15 SXS8XT MAN → AYT Jul 15, 18:05 UTCJul 15, 22:00 UTC3h 55m
2026-07-15 SXS4PL - Jul 15, 12:05 UTCJul 15, 16:15 UTC4h 10m
2026-07-15 SXS6KN - Jul 15, 06:40 UTCJul 15, 09:10 UTC2h 30m
2026-07-15 SXS5XN - Jul 15, 01:50 UTCJul 15, 05:05 UTC3h 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.

Prefer a tail-number view? See the TC-SMD page for operator, model, and routing details .

Mode-S 4BCDA4 frequently asked

What is Mode-S code 4BCDA4?
4BCDA4 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMD.
Where is Mode-S 4BCDA4 registered?
Mode-S code 4BCDA4 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDA4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCDA4, octal 22746644, decimal 4,967,844.
What flights does 4BCDA4 operate?
Mode-S 4BCDA4 has broadcast 20 distinct callsigns, including SXS6DN, SXS6MX, SXS5DL, SXS1BQ, SXS5EY.