Apparatus

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sensors Mode-S transponder

4BCE1A

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SPZ · BOEING 737-800

Hex
4BCE1A
Octal
22747032
Decimal
4,967,962
Country
TR
Tail
TC-SPZ
Type
B738
No current signal · last broadcast 1d ago
Flights observed
9
Distinct callsigns
4
Country
TR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4BCE1A.

Country allocation

The ICAO 24-bit address 4BCE1A 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 4 distinct

Callsign Airline Flights Last seen
SXS93H - 3 2026-04-13
SXS4PL - 3 2026-04-13
SXS5WD - 2 2026-04-13
SXS7GA - 1 2026-04-13

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-13 SXS5WD - Apr 13, 19:50 UTCApr 13, 22:25 UTC2h 35m
2026-04-13 SXS5WD - Apr 13, 18:35 UTCApr 13, 20:10 UTC1h 35m
2026-04-13 SXS4PL - Apr 13, 16:15 UTCApr 13, 17:05 UTC50m
2026-04-13 SXS4PL - Apr 13, 15:50 UTCApr 13, 17:05 UTC1h 15m
2026-04-13 SXS4PL - Apr 13, 13:10 UTCApr 13, 16:15 UTC3h 5m
2026-04-13 SXS7GA - Apr 13, 08:30 UTCApr 13, 11:35 UTC3h 5m
2026-04-13 SXS93H - Apr 13, 04:20 UTCApr 13, 06:45 UTC2h 25m
2026-04-13 SXS93H - Apr 13, 03:55 UTCApr 13, 06:45 UTC2h 50m
2026-04-13 SXS93H - Apr 13, 03:10 UTCApr 13, 04:15 UTC1h 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-SPZ page for operator, model, and routing details .

Mode-S 4BCE1A frequently asked

What is Mode-S code 4BCE1A?
4BCE1A is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SPZ.
Where is Mode-S 4BCE1A registered?
Mode-S code 4BCE1A is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCE1A broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCE1A, octal 22747032, decimal 4,967,962.
What flights does 4BCE1A operate?
Mode-S 4BCE1A has broadcast 4 distinct callsigns, including SXS93H, SXS4PL, SXS5WD, SXS7GA.