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 Jul 26, 21:15 UTC
Flights observed
349
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 21:15 UTC

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
SXS3XF SunExpress 5 2026-07-18
SXS2CY - 5 2026-07-19
SXS6A SunExpress 4 2026-04-17
SXS3WT - 4 2026-07-12
SXS3LW SunExpress 4 2026-04-24
SXS9PA - 3 2026-07-12
SXS965 - 3 2026-06-17
SXS8KW SunExpress 3 2026-07-22
SXS6MF - 3 2026-07-04
SXS66D SunExpress 3 2026-07-26
SXS5YP SunExpress 3 2026-05-23
SXS5KX - 3 2026-07-19
SXS4XH - 3 2026-07-08
SXS4UV SunExpress 3 2026-04-24
SXS4UQ SunExpress 3 2026-07-21
SXS4TD - 3 2026-07-08
SXS4BW SunExpress 3 2026-07-20
SXS1XE - 3 2026-04-26
SXS1WF SunExpress 3 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SXS3AN FRA → ASR Jul 26, 19:00 UTCJul 26, 21:15 UTC2h 15m
2026-07-26 SXS4KG ADB → FRA Jul 26, 14:05 UTCJul 26, 17:00 UTC2h 55m
2026-07-26 SXS66D SJJ → ADB Jul 26, 11:20 UTCJul 26, 12:25 UTC1h 5m
2026-07-26 SXS1WF ADB → SJJ Jul 26, 08:15 UTCJul 26, 09:35 UTC1h 20m
2026-07-26 SXS899 NUE → SAW Jul 26, 01:00 UTCJul 26, 05:25 UTC4h 25m
2026-07-25 SXS898 SAW → NUE Jul 25, 22:10 UTCJul 25, 23:25 UTC1h 15m
2026-07-25 SXS898 SAW → NUE Jul 25, 18:20 UTCJul 25, 19:55 UTC1h 35m
2026-07-25 SXS8BU ASR → DUS Jul 25, 13:30 UTCJul 25, 15:40 UTC2h 10m
2026-07-25 SXS4HL ADB → STR Jul 25, 09:30 UTCJul 25, 12:10 UTC2h 40m
2026-07-25 SXS8ZW AYT → ADB Jul 25, 07:15 UTCJul 25, 07:50 UTC35m
2026-07-25 SXS2ZN NUE → AYT Jul 25, 01:25 UTCJul 25, 04:00 UTC2h 35m
2026-07-24 SXS3DZ AYT → NUE Jul 24, 21:05 UTCJul 25, 00:10 UTC3h 5m
2026-07-24 SXS3JN - Jul 24, 15:35 UTCJul 24, 19:10 UTC3h 35m
2026-07-24 SXS5BV ADB → AYT Jul 24, 09:30 UTCJul 24, 12:40 UTC3h 10m
2026-07-24 SXS4QE AYT → BRE Jul 24, 04:25 UTCJul 24, 07:50 UTC3h 25m
2026-07-24 SXS6XR FMO → AYT Jul 24, 00:10 UTCJul 24, 03:10 UTC3h 0m
2026-07-23 SXS6BM AYT → FMO Jul 23, 19:25 UTCJul 23, 22:55 UTC3h 30m
2026-07-23 SXS9KZ - Jul 23, 14:45 UTCJul 23, 17:30 UTC2h 45m
2026-07-23 SXS4ZJ AYT → GVA Jul 23, 10:00 UTCJul 23, 13:35 UTC3h 35m
2026-07-22 SXS2BB FRA → AYT Jul 22, 19:25 UTCJul 22, 22:20 UTC2h 55m
2026-07-22 SXS21R - Jul 22, 14:25 UTCJul 22, 17:50 UTC3h 25m
2026-07-22 SXS9CB - Jul 22, 11:10 UTCJul 22, 12:45 UTC1h 35m
2026-07-22 SXS8KW PAD → AYT Jul 22, 01:20 UTCJul 22, 04:35 UTC3h 15m
2026-07-21 SXS4UQ AYT → PAD Jul 21, 20:40 UTCJul 22, 00:05 UTC3h 25m
2026-07-21 SXS69W - Jul 21, 16:05 UTCJul 21, 19:10 UTC3h 5m
2026-07-21 SXS8GR - Jul 21, 11:00 UTCJul 21, 14:45 UTC3h 45m
2026-07-21 SXS8ZN STR → AYT Jul 21, 06:15 UTCJul 21, 09:30 UTC3h 15m
2026-07-21 SXS2UK SZF → DUS Jul 21, 01:35 UTCJul 21, 05:00 UTC3h 25m
2026-07-20 SXS9NU - Jul 20, 19:35 UTCJul 20, 21:55 UTC2h 20m
2026-07-20 SXS8XC - Jul 20, 09:55 UTCJul 20, 18:10 UTC8h 15m
2026-07-20 SXS4BW ESB → STR Jul 20, 05:35 UTCJul 20, 08:30 UTC2h 55m
2026-07-19 SXS5KX - Jul 19, 18:20 UTCJul 19, 20:50 UTC2h 30m
2026-07-19 SXS2CY ZRH → DUS Jul 19, 09:05 UTCJul 19, 16:35 UTC7h 30m
2026-07-19 SXS2XP VIE → ZRH Jul 19, 00:45 UTCJul 19, 07:50 UTC7h 5m
2026-07-18 SXS8NP ESB → VIE Jul 18, 21:35 UTCJul 18, 23:35 UTC2h 0m
2026-07-18 SXS3XF MUC → ESB Jul 18, 17:25 UTCJul 18, 19:35 UTC2h 10m
2026-07-18 SXS1MG ESB → MUC Jul 18, 07:25 UTCJul 18, 15:40 UTC8h 15m
2026-07-17 SXS8YQ DUS → FRA Jul 17, 18:19 UTCJul 18, 05:40 UTC11h 21m
2026-07-17 SXS2CY - Jul 17, 13:35 UTCJul 17, 16:40 UTC3h 5m
2026-07-17 SXS3XF MUC → ESB Jul 17, 09:30 UTCJul 17, 11:35 UTC2h 5m
2026-07-17 SXS1MG ESB → MUC Jul 17, 05:35 UTCJul 17, 08:04 UTC2h 30m
2026-07-16 SXS5KX - Jul 16, 18:44 UTCJul 16, 21:25 UTC2h 40m
2026-07-16 SXS2CY - Jul 16, 13:34 UTCJul 16, 16:55 UTC3h 20m
2026-07-16 SXS3XF - Jul 16, 09:30 UTCJul 16, 11:30 UTC2h 0m
2026-07-15 SXS3JZ RTM → MUC Jul 15, 18:30 UTCJul 16, 07:55 UTC13h 25m
2026-07-15 SXS4NX - Jul 15, 13:50 UTCJul 15, 17:15 UTC3h 25m
2026-07-15 SXS3XF - Jul 15, 09:55 UTCJul 15, 12:00 UTC2h 5m
2026-07-15 SXS1MG VIE → MUC Jul 15, 00:15 UTCJul 15, 08:30 UTC8h 15m
2026-07-14 SXS8NP - Jul 14, 20:45 UTCJul 14, 22:50 UTC2h 4m
2026-07-14 SXS8QY - Jul 14, 16:50 UTCJul 14, 18:55 UTC2h 5m

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 Jul 26, 21:15 UTC.
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, SXS3XF, SXS2CY, SXS6A, SXS3WT.