Apparatus

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sensors Mode-S transponder

4BCE0B

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SPK · BOEING 737-800

Hex
4BCE0B
Octal
22747013
Decimal
4,967,947
Country
TR
Tail
TC-SPK
Type
B738
Transponder active on ground
Flights observed
307
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BCE0B.

Country allocation

The ICAO 24-bit address 4BCE0B 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
SXS6RK - 5 2026-07-14
SXS5YP - 5 2026-07-13
SXS4UA - 5 2026-07-14
SXS9KZ SunExpress 4 2026-06-01
SXS8JX SunExpress 4 2026-06-08
SXS7CG SunExpress 4 2026-06-12
SXS6AL SunExpress 4 2026-06-08
SXS69W - 4 2026-07-10
SXS4ZJ SunExpress 4 2026-06-01
SXS4QE SunExpress 4 2026-04-18
SXS46A SunExpress 4 2026-06-03
SXS14E SunExpress 4 2026-05-21
SXS8NM - 3 2026-07-12
SXS8CB - 3 2026-06-12
SXS82K SunExpress 3 2026-06-07
SXS78U SunExpress 3 2026-05-24
SXS77Z SunExpress 3 2026-05-24
SXS6SF SunExpress 3 2026-06-05
SXS6RQ SunExpress 3 2026-06-07
SXS6PZ SunExpress 3 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SXS6RK - Jul 14, 15:40 UTCJul 14, 18:45 UTC3h 5m
2026-07-14 SXS4UA - Jul 14, 09:30 UTCJul 14, 13:05 UTC3h 35m
2026-07-13 SXS7ZD - Jul 13, 19:15 UTCJul 14, 07:45 UTC12h 30m
2026-07-13 SXS5YP - Jul 13, 13:15 UTCJul 13, 17:35 UTC4h 20m
2026-07-13 SXS6EV - Jul 13, 08:35 UTCJul 13, 11:30 UTC2h 55m
2026-07-13 SXS6VQ - Jul 13, 04:05 UTCJul 13, 07:25 UTC3h 20m
2026-07-12 SXS8LA HAM → AYT Jul 12, 19:05 UTCJul 12, 22:10 UTC3h 5m
2026-07-12 SXS8NM - Jul 12, 14:20 UTCJul 12, 17:40 UTC3h 20m
2026-07-12 SXS2YJ CPH → AYT Jul 12, 09:15 UTCJul 12, 12:35 UTC3h 20m
2026-07-11 SXS9GE CPH → CPH Jul 11, 23:45 UTCJul 12, 07:31 UTC7h 45m
2026-07-11 SXS1EN - Jul 11, 19:10 UTCJul 11, 22:30 UTC3h 20m
2026-07-11 SXS5JX ZRH → AYT Jul 11, 14:55 UTCJul 11, 17:45 UTC2h 50m
2026-07-11 SXS9YZ AYT → ZRH Jul 11, 10:00 UTCJul 11, 13:20 UTC3h 20m
2026-07-11 SXS3UU - Jul 11, 08:01 UTCJul 11, 08:55 UTC55m
2026-07-11 SXS3KB - Jul 11, 06:15 UTCJul 11, 06:55 UTC40m
2026-07-11 SXS6CH NUE → AYT Jul 11, 01:25 UTCJul 11, 04:20 UTC2h 55m
2026-07-10 SXS4BD - Jul 10, 21:00 UTCJul 11, 00:05 UTC3h 5m
2026-07-10 SXS69W - Jul 10, 16:55 UTCJul 10, 19:35 UTC2h 40m
2026-07-10 SXS69W - Jul 10, 16:20 UTCJul 10, 16:50 UTC30m
2026-07-10 SXS8GR - Jul 10, 11:05 UTCJul 10, 15:00 UTC3h 55m
2026-07-10 SXS8ZN - Jul 10, 06:05 UTCJul 10, 09:05 UTC3h 0m
2026-07-09 SXS6XT - Jul 9, 19:05 UTCJul 10, 04:40 UTC9h 35m
2026-07-09 SXS3VG - Jul 9, 14:25 UTCJul 9, 17:35 UTC3h 10m
2026-07-09 SXS3AH - Jul 9, 10:20 UTCJul 9, 10:55 UTC35m
2026-07-09 SXS6TD KRK → AYT Jul 9, 06:05 UTCJul 9, 08:15 UTC2h 10m
2026-07-09 SXS3DQ - Jul 9, 02:20 UTCJul 9, 04:40 UTC2h 20m
2026-07-08 SXS79Y ERF → AYT Jul 8, 00:20 UTCJul 8, 03:15 UTC2h 55m
2026-07-07 SXS1FG - Jul 7, 20:05 UTCJul 7, 23:20 UTC3h 15m
2026-07-07 SXS6NH MAN → AYT Jul 7, 13:10 UTCJul 7, 17:00 UTC3h 50m
2026-07-07 SXS5AR - Jul 7, 07:30 UTCJul 7, 11:55 UTC4h 25m
2026-07-07 SXS5ZZ - Jul 7, 03:30 UTCJul 7, 05:15 UTC1h 45m
2026-07-07 SXS4KQ - Jul 7, 00:10 UTCJul 7, 01:35 UTC1h 25m
2026-07-06 SXS5HU - Jul 6, 19:55 UTCJul 6, 22:40 UTC2h 45m
2026-07-06 SXS6XP - Jul 6, 15:00 UTCJul 6, 18:15 UTC3h 15m
2026-07-06 SXS4UA - Jul 6, 09:55 UTCJul 6, 13:30 UTC3h 35m
2026-07-06 SXS2JG - Jul 6, 04:30 UTCJul 6, 08:05 UTC3h 35m
2026-07-05 SXS8WK - Jul 5, 14:45 UTCJul 5, 17:10 UTC2h 25m
2026-07-05 SXS3LW - Jul 5, 10:25 UTCJul 5, 13:30 UTC3h 5m
2026-07-05 SXS5ZE - Jul 5, 06:20 UTCJul 5, 08:45 UTC2h 25m
2026-07-05 SXS4UV - Jul 5, 01:00 UTCJul 5, 04:10 UTC3h 10m
2026-07-04 SXS5KU - Jul 4, 16:20 UTCJul 4, 19:50 UTC3h 30m
2026-07-04 SXS4AW - Jul 4, 10:20 UTCJul 4, 15:05 UTC4h 45m
2026-07-04 SXS2QM - Jul 4, 06:20 UTCJul 4, 07:50 UTC1h 30m
2026-07-04 SXS9QA - Jul 4, 03:15 UTCJul 4, 05:00 UTC1h 45m
2026-07-03 SXS5VF - Jul 3, 19:10 UTCJul 3, 22:40 UTC3h 30m
2026-07-03 SXS7BY - Jul 3, 13:25 UTCJul 3, 18:00 UTC4h 35m
2026-07-03 SXS8FR - Jul 3, 08:35 UTCJul 3, 11:05 UTC2h 30m
2026-07-03 SXS16Y - Jul 3, 03:50 UTCJul 3, 06:50 UTC3h 0m
2026-07-02 SXS8QA - Jul 2, 22:05 UTCJul 3, 01:25 UTC3h 20m
2026-07-02 SXS3CQ AYT → FRA Jul 2, 17:10 UTCJul 2, 20:45 UTC3h 35m

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

Mode-S 4BCE0B frequently asked

What is Mode-S code 4BCE0B?
4BCE0B is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SPK.
Where is Mode-S 4BCE0B registered?
Mode-S code 4BCE0B is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCE0B broadcasting right now?
Mode-S 4BCE0B is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCE0B, octal 22747013, decimal 4,967,947.
What flights does 4BCE0B operate?
Mode-S 4BCE0B has broadcast 20 distinct callsigns, including SXS6RK, SXS5YP, SXS4UA, SXS9KZ, SXS8JX.