Apparatus

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sensors Mode-S transponder

4BCDAB

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMK · BOEING 737 MAX 8

Hex
4BCDAB
Octal
22746653
Decimal
4,967,851
Country
TR
Tail
TC-SMK
Type
B38M
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
464
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S 4BCDAB.

Country allocation

The ICAO 24-bit address 4BCDAB 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
SXS9LQ SunExpress 12 2026-07-23
SXS6PC - 10 2026-07-23
SXS5NH SunExpress 10 2026-07-23
SXS9HP SunExpress 8 2026-07-26
SXS8JE - 8 2026-06-24
SXS8HN SunExpress 8 2026-07-23
SXS7TL - 8 2026-07-09
SXS5ET - 8 2026-06-24
SXS4AC SunExpress 8 2026-07-26
SXS7LK - 7 2026-07-21
SXS6MX - 7 2026-07-14
SXS6DN - 7 2026-07-14
SXS93H - 6 2026-07-09
SXS8XT SunExpress 6 2026-07-21
SXS51C - 6 2026-07-10
SXS3FR - 6 2026-07-05
SXS7XF SunExpress 5 2026-07-13
SXS6TK - 5 2026-07-13
SXS5ZP - 5 2026-06-25
SXS2MD - 5 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SXS93K AYT → CGN Jul 26, 21:25 UTCJul 26, 22:45 UTC1h 20m
2026-07-26 SXS6ZH ADB → AYT Jul 26, 19:35 UTCJul 26, 20:10 UTC35m
2026-07-26 SXS2HB - Jul 26, 17:30 UTCJul 26, 17:55 UTC25m
2026-07-26 SXS4AC FRA → AYT Jul 26, 12:30 UTCJul 26, 15:30 UTC3h 0m
2026-07-26 SXS9HP AYT → FRA Jul 26, 07:25 UTCJul 26, 10:50 UTC3h 25m
2026-07-26 SXS4TF BTS → AYT Jul 26, 00:05 UTCJul 26, 02:15 UTC2h 10m
2026-07-25 SXS6PR AYT → BTS Jul 25, 20:30 UTCJul 25, 22:55 UTC2h 25m
2026-07-25 SXS547 EIN → AYT Jul 25, 18:05 UTCJul 25, 18:35 UTC30m
2026-07-25 SXS38V EIN → AYT Jul 25, 08:55 UTCJul 25, 12:30 UTC3h 35m
2026-07-25 SXS7BP AYT → EIN Jul 25, 03:35 UTCJul 25, 07:10 UTC3h 35m
2026-07-24 SXS6XD CGN → AYT Jul 24, 22:35 UTCJul 25, 01:30 UTC2h 55m
2026-07-24 SXS4RX AYT → CGN Jul 24, 17:05 UTCJul 24, 20:40 UTC3h 35m
2026-07-24 SXS4AC - Jul 24, 12:25 UTCJul 24, 15:15 UTC2h 50m
2026-07-24 SXS9HP AYT → FRA Jul 24, 07:20 UTCJul 24, 10:35 UTC3h 15m
2026-07-23 SXS5NH HAM → AYT Jul 23, 18:10 UTCJul 23, 21:10 UTC3h 0m
2026-07-23 SXS6PC - Jul 23, 13:30 UTCJul 23, 16:55 UTC3h 25m
2026-07-23 SXS8HN HAM → AYT Jul 23, 09:15 UTCJul 23, 12:15 UTC3h 0m
2026-07-23 SXS9LQ AYT → HAM Jul 23, 04:25 UTCJul 23, 07:50 UTC3h 25m
2026-07-22 SXS75K HAJ → AYT Jul 22, 23:50 UTCJul 23, 02:40 UTC2h 50m
2026-07-22 SXS7EC AYT → HAJ Jul 22, 19:15 UTCJul 22, 22:35 UTC3h 20m
2026-07-22 SXS1ZM - Jul 22, 14:45 UTCJul 22, 17:30 UTC2h 45m
2026-07-22 SXS3ZA - Jul 22, 11:10 UTCJul 22, 13:40 UTC2h 30m
2026-07-22 SXS4SB - Jul 22, 01:30 UTCJul 22, 04:30 UTC3h 0m
2026-07-21 SXS8XT MAN → AYT Jul 21, 17:50 UTCJul 21, 21:40 UTC3h 50m
2026-07-21 SXS7LK - Jul 21, 11:45 UTCJul 21, 16:10 UTC4h 25m
2026-07-21 SXS2 FRA → AYT Jul 21, 06:10 UTCJul 21, 09:05 UTC2h 55m
2026-07-20 SXS3TR AYT → BER Jul 20, 18:55 UTCJul 21, 04:30 UTC9h 35m
2026-07-20 SXS1 - Jul 20, 13:45 UTCJul 20, 17:10 UTC3h 25m
2026-07-20 SXS5BV BRE → AYT Jul 20, 09:15 UTCJul 20, 12:15 UTC3h 0m
2026-07-20 SXS4QE AYT → BRE Jul 20, 04:30 UTCJul 20, 07:55 UTC3h 25m
2026-07-19 SXS1ZQ NUE → AYT Jul 19, 22:55 UTCJul 20, 01:30 UTC2h 35m
2026-07-19 SXS6SF AYT → NUE Jul 19, 18:10 UTCJul 19, 21:10 UTC3h 0m
2026-07-19 SXS6NH MAN → AYT Jul 19, 13:15 UTCJul 19, 16:55 UTC3h 40m
2026-07-19 SXS5AR - Jul 19, 07:05 UTCJul 19, 11:35 UTC4h 30m
2026-07-19 SXS8KW PAD → AYT Jul 19, 01:30 UTCJul 19, 04:35 UTC3h 5m
2026-07-18 SXS4UQ - Jul 18, 21:10 UTCJul 19, 00:30 UTC3h 20m
2026-07-18 SXS3JN - Jul 18, 15:50 UTCJul 18, 19:40 UTC3h 50m
2026-07-18 SXS6NH - Jul 18, 10:25 UTCJul 18, 14:30 UTC4h 5m
2026-07-18 SXS4PL NUE → AYT Jul 18, 03:35 UTCJul 18, 07:45 UTC4h 10m
2026-07-17 SXS6WB - Jul 17, 18:55 UTCJul 17, 22:40 UTC3h 45m
2026-07-17 SXS4QB - Jul 17, 12:45 UTCJul 17, 17:09 UTC4h 25m
2026-07-17 SXS6WA - Jul 17, 08:35 UTCJul 17, 11:00 UTC2h 25m
2026-07-17 SXS6SJ - Jul 17, 04:14 UTCJul 17, 07:14 UTC3h 0m
2026-07-16 SXS3WE - Jul 16, 18:34 UTCJul 16, 21:19 UTC2h 45m
2026-07-16 SXS4PG - Jul 16, 13:30 UTCJul 16, 17:00 UTC3h 30m
2026-07-16 SXS9AE - Jul 16, 09:15 UTCJul 16, 11:20 UTC2h 5m
2026-07-16 SXS2KC - Jul 16, 05:10 UTCJul 16, 07:50 UTC2h 40m
2026-07-15 SXS4XY NCL → DLM Jul 15, 15:15 UTCJul 15, 18:50 UTC3h 35m
2026-07-15 SXS3582 - Jul 15, 09:40 UTCJul 15, 13:35 UTC3h 55m
2026-07-15 SXS3EW - Jul 15, 07:05 UTCJul 15, 08:20 UTC1h 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-SMK page for operator, model, and routing details .

Mode-S 4BCDAB frequently asked

What is Mode-S code 4BCDAB?
4BCDAB is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMK.
Where is Mode-S 4BCDAB registered?
Mode-S code 4BCDAB is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDAB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCDAB, octal 22746653, decimal 4,967,851.
What flights does 4BCDAB operate?
Mode-S 4BCDAB has broadcast 20 distinct callsigns, including SXS9LQ, SXS6PC, SXS5NH, SXS9HP, SXS8JE.