Apparatus

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sensors Mode-S transponder

4BCDB3

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMS · BOEING 737 MAX 8

Hex
4BCDB3
Octal
22746663
Decimal
4,967,859
Country
TR
Tail
TC-SMS
Type
B38M
Broadcasting now · callsign SXS4QE · 38,000 ft
Flights observed
435
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 22:45 UTC

Current position

4BCDB3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BCDB3 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
SXS7LK - 9 2026-07-19
SXS5WD - 8 2026-07-15
SXS4PL - 6 2026-06-20
SXS2KC - 6 2026-06-18
SXS2HQ SunExpress 6 2026-07-26
SXS8XT SunExpress 5 2026-07-19
SXS6ZW - 5 2026-07-11
SXS6NH - 5 2026-07-10
SXS5LJ - 5 2026-07-11
SXS5DL - 5 2026-07-16
SXS51C SunExpress 5 2026-07-26
SXS4DQ SunExpress 5 2026-05-10
SXS2BB - 5 2026-07-14
SXS21R - 5 2026-07-14
SXS1BQ SunExpress 5 2026-07-17
SXS9WA - 4 2026-06-29
SXS9NX SunExpress 4 2026-07-18
SXS9LQ SunExpress 4 2026-07-21
SXS9AE - 4 2026-06-18
SXS8TG - 4 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SXS4UQ AYT → PAD Jul 26, 21:25 UTCJul 26, 22:45 UTC1h 20m
2026-07-26 SXS4VJ GRZ → AYT Jul 26, 17:20 UTCJul 26, 19:25 UTC2h 5m
2026-07-26 SXS61P DUS → AYT Jul 26, 13:30 UTCJul 26, 16:10 UTC2h 40m
2026-07-26 SXS2HQ STR → ASR Jul 26, 08:00 UTCJul 26, 11:25 UTC3h 25m
2026-07-26 SXS51C ZRH → AYT Jul 26, 02:45 UTCJul 26, 06:10 UTC3h 25m
2026-07-25 SXS1ZQ NUE → AYT Jul 25, 22:45 UTCJul 26, 01:25 UTC2h 40m
2026-07-25 SXS6SF AYT → NUE Jul 25, 18:40 UTCJul 25, 21:35 UTC2h 55m
2026-07-25 SXS36L VIE → AYT Jul 25, 13:15 UTCJul 25, 15:40 UTC2h 25m
2026-07-25 SXS41C AYT → NUE Jul 25, 09:40 UTCJul 25, 12:05 UTC2h 25m
2026-07-25 SXS3KG ASR → AYT Jul 25, 08:00 UTCJul 25, 08:25 UTC25m
2026-07-25 SXS5DK AYT → ASR Jul 25, 05:35 UTCJul 25, 05:55 UTC20m
2026-07-25 SXS6XR FMO → AYT Jul 25, 00:05 UTCJul 25, 03:15 UTC3h 10m
2026-07-24 SXS6BM AYT → FMO Jul 24, 19:20 UTCJul 24, 22:45 UTC3h 25m
2026-07-24 SXS7HT - Jul 24, 14:55 UTCJul 24, 17:45 UTC2h 50m
2026-07-24 SXS9EP AYT → LEJ Jul 24, 10:40 UTCJul 24, 13:45 UTC3h 5m
2026-07-24 SXS2 FRA → AYT Jul 24, 06:25 UTCJul 24, 09:30 UTC3h 5m
2026-07-23 SXS3TR AYT → BER Jul 23, 19:05 UTCJul 24, 04:35 UTC9h 30m
2026-07-23 SXS1 - Jul 23, 13:50 UTCJul 23, 17:10 UTC3h 20m
2026-07-23 SXS4RN STN → AYT Jul 23, 09:20 UTCJul 23, 12:20 UTC3h 0m
2026-07-23 SXS3RT AYT → SCN Jul 23, 04:40 UTCJul 23, 08:10 UTC3h 30m
2026-07-22 SXS2LL STR → AYT Jul 22, 19:10 UTCJul 22, 21:50 UTC2h 40m
2026-07-22 SXS5NG AYT → STR Jul 22, 14:55 UTCJul 22, 18:05 UTC3h 10m
2026-07-22 SXS149 FRA → AYT Jul 22, 10:20 UTCJul 22, 12:25 UTC2h 5m
2026-07-21 SXS3JC - Jul 21, 13:50 UTCJul 21, 17:20 UTC3h 30m
2026-07-21 SXS8HN HAM → AYT Jul 21, 09:00 UTCJul 21, 12:15 UTC3h 15m
2026-07-21 SXS9LQ AYT → HAM Jul 21, 04:25 UTCJul 21, 07:50 UTC3h 25m
2026-07-20 SXS4DC - Jul 20, 17:30 UTCJul 20, 21:00 UTC3h 30m
2026-07-20 SXS4EA NCL → AYT Jul 20, 11:35 UTCJul 20, 15:40 UTC4h 5m
2026-07-20 SXS5CX AYT → NCL Jul 20, 05:35 UTCJul 20, 10:00 UTC4h 25m
2026-07-19 SXS8XT MAN → AYT Jul 19, 18:30 UTCJul 19, 22:25 UTC3h 55m
2026-07-19 SXS7LK - Jul 19, 12:35 UTCJul 19, 17:00 UTC4h 25m
2026-07-19 SXS1PJ CGN → AYT Jul 19, 01:10 UTCJul 19, 04:10 UTC3h 0m
2026-07-18 SXS9NX AYT → CGN Jul 18, 20:30 UTCJul 18, 23:55 UTC3h 25m
2026-07-18 SXS16E - Jul 18, 15:45 UTCJul 18, 18:35 UTC2h 50m
2026-07-18 SXS8TG - Jul 18, 11:20 UTCJul 18, 14:25 UTC3h 5m
2026-07-17 SXS619 CGN → AYT Jul 17, 23:39 UTCJul 18, 02:40 UTC3h 0m
2026-07-17 SXS4PG - Jul 17, 18:15 UTCJul 17, 21:30 UTC3h 15m
2026-07-17 SXS4LY BHX → DLM Jul 17, 12:50 UTCJul 17, 16:19 UTC3h 30m
2026-07-17 SXS9EN MLX → DUS Jul 17, 07:14 UTCJul 17, 11:20 UTC4h 5m
2026-07-17 SXS1BQ MAN → DLM Jul 17, 00:55 UTCJul 17, 04:29 UTC3h 35m
2026-07-16 SXS5DL - Jul 16, 18:19 UTCJul 16, 22:45 UTC4h 25m
2026-07-16 SXS6DN - Jul 16, 12:44 UTCJul 16, 16:09 UTC3h 25m
2026-07-16 SXS6MX - Jul 16, 07:10 UTCJul 16, 11:10 UTC4h 0m
2026-07-15 SXS5WD - Jul 15, 17:50 UTCJul 15, 21:25 UTC3h 35m
2026-07-15 SXS7LK - Jul 15, 11:45 UTCJul 15, 16:10 UTC4h 25m
2026-07-15 SXS3EL - Jul 15, 05:50 UTCJul 15, 10:00 UTC4h 10m
2026-07-14 SXS2BB FRA → AYT Jul 14, 18:15 UTCJul 14, 21:05 UTC2h 50m
2026-07-14 SXS21R - Jul 14, 13:20 UTCJul 14, 16:55 UTC3h 35m
2026-07-14 SXS8SA - Jul 14, 06:35 UTCJul 14, 07:15 UTC40m
2026-07-14 SXS9ZB - Jul 14, 04:50 UTCJul 14, 05:15 UTC25m

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

Mode-S 4BCDB3 frequently asked

What is Mode-S code 4BCDB3?
4BCDB3 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMS.
Where is Mode-S 4BCDB3 registered?
Mode-S code 4BCDB3 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDB3 broadcasting right now?
Yes. Mode-S 4BCDB3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCDB3, octal 22746663, decimal 4,967,859.
What flights does 4BCDB3 operate?
Mode-S 4BCDB3 has broadcast 20 distinct callsigns, including SXS7LK, SXS5WD, SXS4PL, SXS2KC, SXS2HQ.