Apparatus

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sensors Mode-S transponder

4BCDA1

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMA · BOEING 737 MAX 8

Hex
4BCDA1
Octal
22746641
Decimal
4,967,841
Country
TR
Tail
TC-SMA
Type
B38M
Broadcasting now · callsign SXS2HQ · 37,000 ft
Flights observed
238
Distinct callsigns
20
Country
TR
Last broadcast
47m ago

Current position

4BCDA1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BCDA1 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 7 2026-05-21
SXS3FR SunExpress 7 2026-05-20
SXS8HN SunExpress 6 2026-05-21
SXS2KY SunExpress 6 2026-05-19
SXS84K SunExpress 5 2026-05-01
SXS6NH SunExpress 5 2026-05-28
SXS5AR SunExpress 5 2026-05-28
SXS8UH SunExpress 4 2026-05-19
SXS7UJ SunExpress 4 2026-05-19
SXS6PC SunExpress 4 2026-05-21
SXS5NH SunExpress 4 2026-05-21
SXS4VJ SunExpress 4 2026-05-09
SXS3XA - 4 2026-04-16
SXS1ZQ SunExpress 4 2026-04-15
SXS8SD SunExpress 3 2026-05-22
SXS6SF SunExpress 3 2026-04-15
SXS61P SunExpress 3 2026-05-09
SXS5NW - 3 2026-04-13
SXS51C SunExpress 3 2026-05-30
SXS4RM SunExpress 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SXS2HQ STR → ASR May 30, 07:55 UTCMay 30, 08:15 UTC20m
2026-05-30 SXS51C ZRH → AYT May 30, 02:45 UTCMay 30, 06:25 UTC3h 40m
2026-05-29 SXS8RQ BRS → AYT May 29, 18:05 UTCMay 29, 22:00 UTC3h 55m
2026-05-29 SXS4JV AYT → BRS May 29, 12:25 UTCMay 29, 16:55 UTC4h 30m
2026-05-29 SXS9UL BSL → AYT May 29, 08:00 UTCMay 29, 10:50 UTC2h 50m
2026-05-29 SXS58U DUS → OGU May 29, 03:20 UTCMay 29, 06:45 UTC3h 25m
2026-05-29 SXS4QP NUE → AYT May 29, 00:45 UTCMay 29, 01:55 UTC1h 10m
2026-05-28 SXS4QP NUE → AYT May 28, 23:15 UTCMay 29, 00:20 UTC1h 5m
2026-05-28 SXS3ER DRS → AYT May 28, 18:40 UTCMay 28, 21:50 UTC3h 10m
2026-05-28 SXS6NH MAN → AYT May 28, 12:50 UTCMay 28, 16:45 UTC3h 55m
2026-05-28 SXS5AR ASR → FRA May 28, 06:55 UTCMay 28, 11:15 UTC4h 20m
2026-05-28 SXS2RJ HAJ → AYT May 28, 01:55 UTCMay 28, 05:00 UTC3h 5m
2026-05-27 SXS2PC AYT → HAJ May 27, 21:10 UTCMay 28, 00:35 UTC3h 25m
2026-05-27 SXS2ND BRU → DLM May 27, 16:20 UTCMay 27, 19:40 UTC3h 20m
2026-05-27 SXS4FF AYT → CDG May 27, 10:55 UTCMay 27, 14:35 UTC3h 40m
2026-05-27 SXS2 FRA → AYT May 27, 06:34 UTCMay 27, 09:35 UTC3h 1m
2026-05-27 SXS5XN WAW → ADB May 27, 01:49 UTCMay 27, 04:55 UTC3h 5m
2026-05-26 SXS4DU GLA → DLM May 26, 12:40 UTCMay 26, 16:50 UTC4h 10m
2026-05-26 SXS4SZ DLM → GLA May 26, 06:49 UTCMay 26, 11:00 UTC4h 10m
2026-05-26 SXS1BQ MAN → DLM May 26, 00:00 UTCMay 26, 03:55 UTC3h 55m
2026-05-25 SXS5DL DLM → MAN May 25, 18:20 UTCMay 25, 22:15 UTC3h 55m
2026-05-25 SXS5WD MAN → DLM May 25, 12:40 UTCMay 25, 16:30 UTC3h 50m
2026-05-25 SXS4PL NUE → AYT May 25, 06:35 UTCMay 25, 10:35 UTC4h 0m
2026-05-24 SXS6WB - May 24, 18:35 UTCMay 24, 21:45 UTC3h 10m
2026-05-24 SXS4QB - May 24, 13:05 UTCMay 24, 17:20 UTC4h 15m
2026-05-24 SXS7GA DUS → DLM May 24, 08:30 UTCMay 24, 11:25 UTC2h 55m
2026-05-24 SXS93H - May 24, 03:15 UTCMay 24, 06:45 UTC3h 30m
2026-05-23 SXS8XT MAN → AYT May 23, 17:50 UTCMay 23, 21:55 UTC4h 5m
2026-05-23 SXS7LK AYT → MAN May 23, 11:50 UTCMay 23, 16:15 UTC4h 25m
2026-05-23 SXS5VH - May 23, 09:55 UTCMay 23, 10:10 UTC15m
2026-05-23 SXS8QB AYT → SZF May 23, 06:50 UTCMay 23, 07:05 UTC15m
2026-05-23 SXS6DA TLL → AYT May 23, 01:45 UTCMay 23, 05:25 UTC3h 39m
2026-05-22 SXS8SD AYT → TLL May 22, 20:50 UTCMay 23, 00:35 UTC3h 45m
2026-05-22 SXS9KZ STR → AYT May 22, 15:25 UTCMay 22, 18:35 UTC3h 10m
2026-05-22 SXS4ZJ AYT → GVA May 22, 10:35 UTCMay 22, 13:55 UTC3h 20m
2026-05-22 SXS8LW STR → AYT May 22, 05:50 UTCMay 22, 08:35 UTC2h 45m
2026-05-22 SXS4SB - May 22, 01:05 UTCMay 22, 04:10 UTC3h 5m
2026-05-21 SXS5NH HAM → AYT May 21, 18:20 UTCMay 21, 21:30 UTC3h 10m
2026-05-21 SXS6PC AYT → HAM May 21, 13:35 UTCMay 21, 17:05 UTC3h 30m
2026-05-21 SXS8HN HAM → AYT May 21, 09:05 UTCMay 21, 12:20 UTC3h 15m
2026-05-21 SXS9LQ AYT → HAM May 21, 04:15 UTCMay 21, 07:35 UTC3h 20m
2026-05-20 SXS7KJ MUC → ESB May 20, 15:00 UTCMay 20, 17:45 UTC2h 45m
2026-05-20 SXS2BD SCN → AYT May 20, 10:40 UTCMay 20, 13:35 UTC2h 55m
2026-05-20 SXS3FR BER → AYT May 20, 05:55 UTCMay 20, 08:50 UTC2h 55m
2026-05-19 SXS5UE BER → SZF May 19, 20:25 UTCMay 20, 04:20 UTC7h 55m
2026-05-19 SXS2KY AYT → BER May 19, 15:15 UTCMay 19, 18:15 UTC3h 0m
2026-05-19 SXS7UJ CGN → AYT May 19, 10:40 UTCMay 19, 13:45 UTC3h 5m
2026-05-19 SXS8UH AYT → ADB May 19, 05:35 UTCMay 19, 09:00 UTC3h 25m
2026-05-18 SXS69W BRU → AYT May 18, 16:10 UTCMay 18, 19:30 UTC3h 19m
2026-05-18 SXS8GR AYT → BRU May 18, 11:15 UTCMay 18, 14:55 UTC3h 40m

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

Mode-S 4BCDA1 frequently asked

What is Mode-S code 4BCDA1?
4BCDA1 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMA.
Where is Mode-S 4BCDA1 registered?
Mode-S code 4BCDA1 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDA1 broadcasting right now?
Yes. Mode-S 4BCDA1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCDA1, octal 22746641, decimal 4,967,841.
What flights does 4BCDA1 operate?
Mode-S 4BCDA1 has broadcast 20 distinct callsigns, including SXS9LQ, SXS3FR, SXS8HN, SXS2KY, SXS84K.