Apparatus

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sensors Mode-S transponder

4BCDB2

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMR · BOEING 737 MAX 8

Hex
4BCDB2
Octal
22746662
Decimal
4,967,858
Country
TR
Tail
TC-SMR
Type
B38M
Broadcasting now · callsign SXS9CU · 37,000 ft
Flights observed
237
Distinct callsigns
20
Country
TR
Last broadcast
29m ago

Current position

4BCDB2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BCDB2 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
SXS7QG SunExpress 6 2026-05-19
SXS6YM SunExpress 6 2026-05-21
SXS6HK SunExpress 6 2026-05-17
SXS9PG SunExpress 5 2026-05-21
SXS7DP SunExpress 5 2026-05-19
SXS7BY SunExpress 5 2026-05-28
SXS7BN SunExpress 5 2026-05-24
SXS7AK SunExpress 5 2026-05-14
SXS5SV SunExpress 5 2026-05-22
SXS5LU SunExpress 5 2026-05-24
SXS3AV SunExpress 5 2026-05-22
SXS2UM SunExpress 5 2026-05-17
SXS1XP SunExpress 5 2026-05-22
SXS1LN SunExpress 5 2026-05-14
SXS9DA SunExpress 4 2026-05-07
SXS8VB SunExpress 4 2026-05-26
SXS8KM SunExpress 4 2026-05-17
SXS8BU SunExpress 4 2026-05-27
SXS6VE SunExpress 4 2026-05-17
SXS5VF SunExpress 4 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SXS9CU - May 30, 13:15 UTCMay 30, 14:30 UTC1h 15m
2026-05-30 SXS68T ADB → MXP May 30, 09:25 UTCMay 30, 11:55 UTC2h 30m
2026-05-30 SXS7AM VIE → ADB May 30, 05:45 UTCMay 30, 07:30 UTC1h 45m
2026-05-30 SXS3HZ ADB → VIE May 30, 02:20 UTCMay 30, 04:25 UTC2h 5m
2026-05-29 SXS2BQ STN → ADB May 29, 22:00 UTCMay 30, 01:05 UTC3h 5m
2026-05-29 SXS5LG ADB → STN May 29, 16:35 UTCMay 29, 20:10 UTC3h 35m
2026-05-29 SXS7AM VIE → ADB May 29, 12:55 UTCMay 29, 14:35 UTC1h 40m
2026-05-29 SXS3HZ ADB → VIE May 29, 09:50 UTCMay 29, 11:50 UTC2h 0m
2026-05-29 SXS2Y STR → GZT May 29, 03:15 UTCMay 29, 06:45 UTC3h 30m
2026-05-28 SXS5VF DUB → ADB May 28, 16:05 UTCMay 28, 19:55 UTC3h 50m
2026-05-28 SXS7BY TLL → AYT May 28, 10:15 UTCMay 28, 14:30 UTC4h 15m
2026-05-28 SXS4EC STR → ADB May 28, 05:25 UTCMay 28, 07:40 UTC2h 15m
2026-05-28 SXS7KP ADB → STR May 28, 01:25 UTCMay 28, 04:05 UTC2h 40m
2026-05-27 SXS2QA STR → ADB May 27, 20:30 UTCMay 27, 22:45 UTC2h 15m
2026-05-27 SXS4WL ADB → STR May 27, 16:50 UTCMay 27, 19:25 UTC2h 35m
2026-05-27 SXS8BU ASR → DUS May 27, 13:10 UTCMay 27, 15:25 UTC2h 15m
2026-05-27 SXS4HL ADB → STR May 27, 09:15 UTCMay 27, 11:50 UTC2h 35m
2026-05-27 SXS6SB ADB → STR May 27, 03:54 UTCMay 27, 06:49 UTC2h 55m
2026-05-26 SXS4XH - May 26, 18:14 UTCMay 26, 21:04 UTC2h 50m
2026-05-26 SXS8VB HAM → ADB May 26, 14:00 UTCMay 26, 16:40 UTC2h 40m
2026-05-26 SXS4AX ADB → HAM May 26, 09:45 UTCMay 26, 12:45 UTC3h 0m
2026-05-26 SXS7GW MSR → ADB May 26, 02:44 UTCMay 26, 06:59 UTC4h 15m
2026-05-25 SXS5VF DUB → ADB May 25, 15:55 UTCMay 25, 19:40 UTC3h 44m
2026-05-25 SXS7BY TLL → AYT May 25, 10:25 UTCMay 25, 14:25 UTC4h 0m
2026-05-25 SXS4EC STR → ADB May 25, 05:10 UTCMay 25, 07:45 UTC2h 35m
2026-05-25 SXS7KP ADB → STR May 25, 01:55 UTCMay 25, 04:10 UTC2h 15m
2026-05-24 SXS4HF SZF → ADB May 24, 20:35 UTCMay 24, 20:55 UTC20m
2026-05-24 SXS6DY ADB → EIN May 24, 17:35 UTCMay 24, 18:00 UTC25m
2026-05-24 SXS5LU MUC → ADB May 24, 13:10 UTCMay 24, 15:20 UTC2h 10m
2026-05-24 SXS7BN ADB → MUC May 24, 09:25 UTCMay 24, 11:40 UTC2h 15m
2026-05-24 SXS7EL TZX → ADB May 24, 05:05 UTCMay 24, 06:35 UTC1h 30m
2026-05-24 SXS6ZT ADB → TZX May 24, 02:30 UTCMay 24, 04:05 UTC1h 35m
2026-05-23 SXS2BQ STN → ADB May 23, 21:50 UTCMay 24, 01:00 UTC3h 10m
2026-05-23 SXS5LG ADB → STN May 23, 16:55 UTCMay 23, 20:25 UTC3h 31m
2026-05-23 SXS9CU - May 23, 13:05 UTCMay 23, 15:25 UTC2h 20m
2026-05-23 SXS68T ADB → MXP May 23, 09:10 UTCMay 23, 11:30 UTC2h 20m
2026-05-23 SXS7AM VIE → ADB May 23, 05:40 UTCMay 23, 07:25 UTC1h 45m
2026-05-23 SXS3HZ ADB → VIE May 23, 02:20 UTCMay 23, 04:20 UTC1h 59m
2026-05-22 SXS5SV BRU → ADB May 22, 16:05 UTCMay 22, 19:00 UTC2h 55m
2026-05-22 SXS3AV AOE → BRU May 22, 11:35 UTCMay 22, 14:20 UTC2h 45m
2026-05-22 SXS3CA BRU → AOE May 22, 06:35 UTCMay 22, 09:25 UTC2h 50m
2026-05-22 SXS1XP ADB → BRU May 22, 02:00 UTCMay 22, 05:05 UTC3h 5m
2026-05-21 SXS5QP ADB → MQM May 21, 18:20 UTCMay 21, 22:35 UTC4h 15m
2026-05-21 SXS8VB HAM → ADB May 21, 13:40 UTCMay 21, 16:30 UTC2h 50m
2026-05-21 SXS4AX ADB → HAM May 21, 09:05 UTCMay 21, 12:10 UTC3h 5m
2026-05-21 SXS9PG CGN → ADB May 21, 04:20 UTCMay 21, 07:00 UTC2h 40m
2026-05-21 SXS6YM ADB → CGN May 21, 00:05 UTCMay 21, 03:00 UTC2h 55m
2026-05-20 SXS1AV ADB → DIY May 20, 17:55 UTCMay 20, 22:05 UTC4h 10m
2026-05-20 SXS5LU MUC → ADB May 20, 13:05 UTCMay 20, 15:10 UTC2h 5m
2026-05-20 SXS7BN ADB → MUC May 20, 08:50 UTCMay 20, 11:20 UTC2h 30m

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

Mode-S 4BCDB2 frequently asked

What is Mode-S code 4BCDB2?
4BCDB2 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMR.
Where is Mode-S 4BCDB2 registered?
Mode-S code 4BCDB2 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDB2 broadcasting right now?
Yes. Mode-S 4BCDB2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCDB2, octal 22746662, decimal 4,967,858.
What flights does 4BCDB2 operate?
Mode-S 4BCDB2 has broadcast 20 distinct callsigns, including SXS7QG, SXS6YM, SXS6HK, SXS9PG, SXS7DP.