Apparatus

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sensors Mode-S transponder

4BCE15

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SPU · BOEING 737-800

Hex
4BCE15
Octal
22747025
Decimal
4,967,957
Country
TR
Tail
TC-SPU
Type
B738
No current signal · last broadcast 8h ago
Flights observed
148
Distinct callsigns
20
Country
TR
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 4BCE15.

Country allocation

The ICAO 24-bit address 4BCE15 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
SXS8WK SunExpress 7 2026-04-24
SXS6A SunExpress 4 2026-04-17
SXS3LW SunExpress 4 2026-04-24
SXS5YP SunExpress 3 2026-05-23
SXS4UV SunExpress 3 2026-04-24
SXS3WT SunExpress 3 2026-04-26
SXS1XE - 3 2026-04-26
SXS9ZT SunExpress 2 2026-04-16
SXS9LY SunExpress 2 2026-05-18
SXS9HN SunExpress 2 2026-05-18
SXS965 SunExpress 2 2026-04-18
SXS964 - 2 2026-04-17
SXS8NM SunExpress 2 2026-05-22
SXS8LA SunExpress 2 2026-05-22
SXS8CB SunExpress 2 2026-05-09
SXS8AJ SunExpress 2 2026-05-21
SXS7CG SunExpress 2 2026-05-09
SXS6RK SunExpress 2 2026-05-24
SXS6MF SunExpress 2 2026-05-20
SXS6HX SunExpress 2 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SXS5MQ MAN → AYT May 29, 16:10 UTCMay 29, 20:00 UTC3h 50m
2026-05-29 SXS8KP DIY → HAJ May 29, 09:45 UTCMay 29, 14:25 UTC4h 40m
2026-05-29 SXS651 SOF → AYT May 29, 07:00 UTCMay 29, 08:30 UTC1h 30m
2026-05-29 SXS34J AYT → MXP May 29, 03:55 UTCMay 29, 05:10 UTC1h 15m
2026-05-28 SXS14E FMO → AYT May 28, 22:30 UTCMay 29, 01:35 UTC3h 5m
2026-05-28 SXS6PZ AYT → FMO May 28, 17:30 UTCMay 28, 21:10 UTC3h 40m
2026-05-28 SXS1JM LGW → AYT May 28, 11:25 UTCMay 28, 15:15 UTC3h 50m
2026-05-28 SXS2VN AYT → LGW May 28, 05:15 UTCMay 28, 09:30 UTC4h 15m
2026-05-27 SXS4VD CPH → AYT May 27, 23:40 UTCMay 28, 02:50 UTC3h 10m
2026-05-27 SXS1EN AYT → CPH May 27, 18:55 UTCMay 27, 22:35 UTC3h 40m
2026-05-27 SXS78U DUS → EDO May 27, 09:55 UTCMay 27, 12:45 UTC2h 50m
2026-05-27 SXS77Z AYT → FMM May 27, 05:04 UTCMay 27, 08:00 UTC2h 55m
2026-05-26 SXS4EA NCL → AYT May 26, 18:14 UTCMay 26, 22:15 UTC4h 0m
2026-05-26 SXS5CX AYT → NCL May 26, 12:20 UTCMay 26, 16:40 UTC4h 20m
2026-05-26 SXS4CN DUS → AYT May 26, 05:49 UTCMay 26, 09:09 UTC3h 20m
2026-05-25 SXS2YL NUE → DLM May 25, 18:55 UTCMay 26, 04:10 UTC9h 15m
2026-05-25 SXS5QN ADB → VAN May 25, 08:45 UTCMay 25, 16:25 UTC7h 40m
2026-05-24 SXS4JX ESB → DUS May 24, 20:15 UTCMay 25, 06:55 UTC10h 40m
2026-05-24 SXS6RK AYT → STR May 24, 15:50 UTCMay 24, 18:50 UTC3h 0m
2026-05-24 SXS6HX MUC → GZT May 24, 07:10 UTCMay 24, 14:15 UTC7h 5m
2026-05-23 SXS2FW STN → GZT May 23, 19:30 UTCMay 24, 05:20 UTC9h 50m
2026-05-23 SXS5YP AYT → FRA May 23, 13:50 UTCMay 23, 17:50 UTC4h 0m
2026-05-23 SXS9CB - May 23, 10:00 UTCMay 23, 12:20 UTC2h 20m
2026-05-23 SXS4JH - May 23, 06:25 UTCMay 23, 08:35 UTC2h 10m
2026-05-23 SXS4KQ - May 23, 00:20 UTCMay 23, 01:45 UTC1h 25m
2026-05-22 SXS8LA HAM → AYT May 22, 19:10 UTCMay 22, 22:25 UTC3h 15m
2026-05-22 SXS8NM AYT → HAM May 22, 14:40 UTCMay 22, 18:05 UTC3h 25m
2026-05-22 SXS4UA STN → AYT May 22, 09:10 UTCMay 22, 13:00 UTC3h 50m
2026-05-21 SXS62C STR → STN May 21, 19:50 UTCMay 22, 07:35 UTC11h 45m
2026-05-21 SXS4GZ - May 21, 15:10 UTCMay 21, 18:30 UTC3h 20m
2026-05-21 SXS8AJ ADB → DUB May 21, 13:10 UTCMay 21, 13:30 UTC20m
2026-05-21 SXS8AJ ADB → DUB May 21, 09:50 UTCMay 21, 12:10 UTC2h 20m
2026-05-20 SXS8XC GZT → STR May 20, 18:20 UTCMay 21, 08:05 UTC13h 45m
2026-05-20 SXS6MF AYT → RTM May 20, 13:20 UTCMay 20, 16:45 UTC3h 25m
2026-05-20 SXS4GL LEJ → AYT May 20, 08:10 UTCMay 20, 10:55 UTC2h 45m
2026-05-20 SXS9SR - May 20, 03:55 UTCMay 20, 06:45 UTC2h 51m
2026-05-19 SXS11A HAJ → AYT May 19, 22:50 UTCMay 20, 02:00 UTC3h 10m
2026-05-19 SXS5EY AYT → HAJ May 19, 17:55 UTCMay 19, 21:05 UTC3h 10m
2026-05-19 SXS8RZ GLA → AYT May 19, 11:50 UTCMay 19, 16:10 UTC4h 20m
2026-05-19 SXS9BR AYT → DUB May 19, 05:55 UTCMay 19, 10:25 UTC4h 30m
2026-05-18 SXS98G DUS → AYT May 18, 17:20 UTCMay 18, 20:40 UTC3h 19m
2026-05-18 SXS7QF AYT → DUS May 18, 12:20 UTCMay 18, 15:45 UTC3h 25m
2026-05-18 SXS9LY VIE → AYT May 18, 08:30 UTCMay 18, 10:40 UTC2h 10m
2026-05-18 SXS9HN AYT → VIE May 18, 04:51 UTCMay 18, 07:25 UTC2h 35m
2026-05-18 SXS79Y AYT → PAD May 18, 00:15 UTCMay 18, 03:01 UTC2h 45m
2026-05-17 SXS1FG AYT → ERF May 17, 19:45 UTCMay 17, 22:50 UTC3h 5m
2026-05-17 SXS6HX MUC → GZT May 17, 07:10 UTCMay 17, 14:05 UTC6h 55m
2026-05-16 SXS2FW STN → GZT May 16, 19:35 UTCMay 17, 05:40 UTC10h 5m
2026-05-16 SXS5YP AYT → FRA May 16, 13:41 UTCMay 16, 17:55 UTC4h 15m
2026-05-16 SXS9LY VIE → AYT May 16, 09:21 UTCMay 16, 11:35 UTC2h 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-SPU page for operator, model, and routing details .

Mode-S 4BCE15 frequently asked

What is Mode-S code 4BCE15?
4BCE15 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SPU.
Where is Mode-S 4BCE15 registered?
Mode-S code 4BCE15 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCE15 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCE15, octal 22747025, decimal 4,967,957.
What flights does 4BCE15 operate?
Mode-S 4BCE15 has broadcast 20 distinct callsigns, including SXS8WK, SXS6A, SXS3LW, SXS5YP, SXS4UV.