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
No current signal · last broadcast 17h ago
Flights observed
4
Distinct callsigns
3
Country
TR
Last broadcast
17h 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 3 distinct

Callsign Airline Flights Last seen
SXS7CG SunExpress 2 2026-04-14
SXS8CB SunExpress 1 2026-04-14
SXS69W - 1 2026-04-12

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-14 SXS7CG MUC → AYT Apr 14, 09:10 UTCApr 14, 10:55 UTC1h 45m
2026-04-14 SXS7CG MUC → AYT Apr 14, 08:20 UTCApr 14, 09:05 UTC45m
2026-04-14 SXS8CB PAD → AYT Apr 14, 05:15 UTCApr 14, 07:00 UTC1h 45m
2026-04-12 SXS69W - Apr 12, 17:15 UTCApr 12, 19:20 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-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?
No active broadcast right now. Last signal was 17h ago.
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 3 distinct callsigns, including SXS7CG, SXS8CB, SXS69W.