Apparatus

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sensors Mode-S transponder

4BCE42

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SRB · BOEING 737-800

Hex
4BCE42
Octal
22747102
Decimal
4,968,002
Country
TR
Tail
TC-SRB
Type
B738
Broadcasting now · callsign SXS3ZX · 38,000 ft
Flights observed
330
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 22:00 UTC

Current position

4BCE42 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BCE42 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
SXS8KW SunExpress 7 2026-07-24
SXS8ZN SunExpress 5 2026-05-18
SXS8PJ SunExpress 5 2026-05-17
SXS6RQ SunExpress 5 2026-06-02
SXS62Q SunExpress 5 2026-05-16
SXS4UQ SunExpress 5 2026-07-23
SXS3ZA - 5 2026-07-19
SXS2HE SunExpress 5 2026-05-16
SXS1ZM - 5 2026-07-19
SXS82K SunExpress 4 2026-06-02
SXS1XU SunExpress 4 2026-07-22
SXS9GG SunExpress 3 2026-06-01
SXS8UH - 3 2026-07-02
SXS8RG - 3 2026-06-20
SXS8RB SunExpress 3 2026-06-01
SXS8CB SunExpress 3 2026-05-26
SXS7QF - 3 2026-04-15
SXS7CG SunExpress 3 2026-05-26
SXS6ZH SunExpress 3 2026-07-25
SXS6CH - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SXS7HJ - Jul 26, 19:20 UTCJul 26, 22:00 UTC2h 40m
2026-07-26 SXS1KH AYT → CGN Jul 26, 13:50 UTCJul 26, 17:35 UTC3h 45m
2026-07-26 SXS4GL LEJ → AYT Jul 26, 08:25 UTCJul 26, 11:15 UTC2h 50m
2026-07-26 SXS9SR - Jul 26, 04:05 UTCJul 26, 07:05 UTC3h 1m
2026-07-25 SXS6ZH ADB → AYT Jul 25, 19:35 UTCJul 25, 20:50 UTC1h 15m
2026-07-25 SXS2HB - Jul 25, 17:40 UTCJul 25, 18:25 UTC45m
2026-07-25 SXS1ZN HAM → AYT Jul 25, 12:20 UTCJul 25, 15:45 UTC3h 25m
2026-07-25 SXS6EG AYT → HAM Jul 25, 07:50 UTCJul 25, 11:10 UTC3h 20m
2026-07-25 SXS5TM FMO → AYT Jul 25, 02:50 UTCJul 25, 06:00 UTC3h 10m
2026-07-24 SXS37U - Jul 24, 22:00 UTCJul 25, 01:25 UTC3h 25m
2026-07-24 SXS2WH LTN → AYT Jul 24, 12:00 UTCJul 24, 15:35 UTC3h 35m
2026-07-24 SXS3NM AYT → LTN Jul 24, 06:15 UTCJul 24, 10:25 UTC4h 10m
2026-07-24 SXS8KW PAD → AYT Jul 24, 01:35 UTCJul 24, 04:25 UTC2h 50m
2026-07-23 SXS4UQ AYT → PAD Jul 23, 21:00 UTCJul 24, 00:15 UTC3h 15m
2026-07-23 SXS4VJ GRZ → AYT Jul 23, 17:10 UTCJul 23, 19:10 UTC2h 0m
2026-07-23 SXS61P DUS → AYT Jul 23, 13:15 UTCJul 23, 15:55 UTC2h 40m
2026-07-23 SXS6DZ BLL → AYT Jul 23, 08:30 UTCJul 23, 11:45 UTC3h 15m
2026-07-23 SXS7HV AYT → BLL Jul 23, 03:40 UTCJul 23, 07:15 UTC3h 35m
2026-07-22 SXS2GA CGN → AYT Jul 22, 23:15 UTCJul 23, 02:15 UTC3h 0m
2026-07-22 SXS1XU AYT → CGN Jul 22, 18:15 UTCJul 22, 21:55 UTC3h 40m
2026-07-22 SXS7617 VAN → AYT Jul 22, 11:15 UTCJul 22, 15:40 UTC4h 25m
2026-07-21 SXS1TD ASR → FRA Jul 21, 19:55 UTCJul 22, 04:45 UTC8h 50m
2026-07-21 SXS5XN WAW → ADB Jul 21, 15:20 UTCJul 21, 18:25 UTC3h 5m
2026-07-21 SXS3WE CGN → DLM Jul 21, 01:30 UTCJul 21, 04:15 UTC2h 45m
2026-07-20 SXS7TT AYT → FMO Jul 20, 20:25 UTCJul 20, 23:50 UTC3h 25m
2026-07-20 SXS6ZG DUS → AYT Jul 20, 14:50 UTCJul 20, 18:00 UTC3h 10m
2026-07-20 SXS12V DUS → AYT Jul 20, 09:45 UTCJul 20, 13:20 UTC3h 35m
2026-07-20 SXS3KG - Jul 20, 05:25 UTCJul 20, 08:25 UTC3h 0m
2026-07-19 SXS75K HAJ → AYT Jul 19, 23:50 UTCJul 20, 02:45 UTC2h 55m
2026-07-19 SXS7EC AYT → HAJ Jul 19, 19:20 UTCJul 19, 22:30 UTC3h 10m
2026-07-19 SXS1ZM STR → AYT Jul 19, 14:55 UTCJul 19, 17:40 UTC2h 45m
2026-07-19 SXS3ZA - Jul 19, 10:25 UTCJul 19, 13:50 UTC3h 25m
2026-07-19 SXS6DP VIE → AYT Jul 19, 06:50 UTCJul 19, 09:15 UTC2h 25m
2026-07-19 SXS43G AYT → VIE Jul 19, 03:10 UTCJul 19, 05:35 UTC2h 25m
2026-07-18 SXS619 CGN → AYT Jul 18, 22:20 UTCJul 19, 01:20 UTC3h 0m
2026-07-18 SXS618 AYT → CGN Jul 18, 17:10 UTCJul 18, 20:35 UTC3h 25m
2026-07-18 SXS84K - Jul 18, 02:05 UTCJul 18, 05:15 UTC3h 11m
2026-07-17 SXS3XA - Jul 17, 21:25 UTCJul 18, 00:39 UTC3h 15m
2026-07-17 SXS8JE ZRH → AYT Jul 17, 16:59 UTCJul 17, 19:35 UTC2h 35m
2026-07-17 SXS5ET - Jul 17, 12:40 UTCJul 17, 15:55 UTC3h 15m
2026-07-17 SXS5ZP - Jul 17, 08:10 UTCJul 17, 10:50 UTC2h 40m
2026-07-17 SXS2MD AYT → ZRH Jul 17, 03:30 UTCJul 17, 06:54 UTC3h 25m
2026-07-16 SXS4DC AYT → AYT Jul 16, 17:10 UTCJul 16, 21:00 UTC3h 50m
2026-07-16 SXS1ZN - Jul 16, 12:09 UTCJul 16, 15:19 UTC3h 10m
2026-07-16 SXS6EG - Jul 16, 07:35 UTCJul 16, 10:55 UTC3h 20m
2026-07-16 SXS3BV CGN → AYT Jul 16, 02:40 UTCJul 16, 05:55 UTC3h 15m
2026-07-15 SXS93K - Jul 15, 21:50 UTCJul 16, 01:25 UTC3h 35m
2026-07-15 SXS5MQ MAN → AYT Jul 15, 16:10 UTCJul 15, 19:55 UTC3h 45m
2026-07-15 SXS8KP - Jul 15, 09:40 UTCJul 15, 14:10 UTC4h 30m
2026-07-15 SXS6HY - Jul 15, 04:35 UTCJul 15, 08:05 UTC3h 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-SRB page for operator, model, and routing details .

Mode-S 4BCE42 frequently asked

What is Mode-S code 4BCE42?
4BCE42 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SRB.
Where is Mode-S 4BCE42 registered?
Mode-S code 4BCE42 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCE42 broadcasting right now?
Yes. Mode-S 4BCE42 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCE42, octal 22747102, decimal 4,968,002.
What flights does 4BCE42 operate?
Mode-S 4BCE42 has broadcast 20 distinct callsigns, including SXS8KW, SXS8ZN, SXS8PJ, SXS6RQ, SXS62Q.