Apparatus

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sensors Mode-S transponder

452112

ICAO 24-bit transponder address · allocated to Bulgaria

Currently assigned to LZ-CXC · BOEING 737-800

Hex
452112
Octal
21220422
Decimal
4,530,450
Country
BG
Tail
LZ-CXC
Type
B738
No current signal · last broadcast Jul 24, 19:20 UTC
Flights observed
243
Distinct callsigns
12
Country
BG
Last broadcast
Jul 24, 19:20 UTC

Last known position

Most recent position reported by Mode-S 452112.

Country allocation

The ICAO 24-bit address 452112 falls within the block assigned to Bulgaria (BG) by ICAO Annex 10, Volume III. Every aircraft registered in Bulgaria 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 12 distinct

Callsign Airline Flights Last seen
BCS3165 European Air Transport 44 2026-07-24
BCS17D European Air Transport 44 2026-07-24
BCS3164 European Air Transport 43 2026-07-24
BCS3KC European Air Transport 37 2026-07-23
BCS20X European Air Transport 35 2026-07-24
BCS7NC European Air Transport 34 2026-07-24
QY418 European Air Transport 1 2026-07-21
BCS861 - 1 2026-07-18
BCS419 European Air Transport 1 2026-07-20
ADZ779P - 1 2026-06-22
ADZ778P Compass Cargo Airlines 1 2026-05-15
ADZ771P Compass Cargo Airlines 1 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 BCS17D SVG → CPH Jul 24, 18:25 UTCJul 24, 19:20 UTC55m
2026-07-24 BCS3165 BGO → SVG Jul 24, 17:10 UTCJul 24, 17:35 UTC25m
2026-07-24 BCS3164 SVG → BGO Jul 24, 07:10 UTCJul 24, 07:30 UTC20m
2026-07-24 BCS20X CPH → SVG Jul 24, 05:10 UTCJul 24, 06:05 UTC55m
2026-07-24 BCS7NC BRU → CPH Jul 24, 01:20 UTCJul 24, 02:35 UTC1h 15m
2026-07-23 BCS3KC CPH → BRU Jul 23, 21:45 UTCJul 23, 22:50 UTC1h 5m
2026-07-23 BCS17D SVG → CPH Jul 23, 18:10 UTCJul 23, 19:00 UTC50m
2026-07-23 BCS3165 BGO → SVG Jul 23, 17:05 UTCJul 23, 17:25 UTC20m
2026-07-23 BCS3164 SVG → BGO Jul 23, 08:25 UTCJul 23, 08:50 UTC25m
2026-07-23 BCS20X CPH → SVG Jul 23, 05:20 UTCJul 23, 06:15 UTC55m
2026-07-23 BCS7NC BRU → CPH Jul 23, 01:20 UTCJul 23, 02:35 UTC1h 15m
2026-07-22 BCS3KC CPH → BRU Jul 22, 21:50 UTCJul 22, 22:55 UTC1h 5m
2026-07-22 BCS17D SVG → CPH Jul 22, 18:35 UTCJul 22, 19:35 UTC1h 0m
2026-07-22 BCS3165 BGO → SVG Jul 22, 17:05 UTCJul 22, 17:30 UTC25m
2026-07-22 BCS7NC BRU → CPH Jul 22, 01:15 UTCJul 22, 02:30 UTC1h 15m
2026-07-21 BCS3KC CPH → BRU Jul 21, 21:45 UTCJul 21, 22:55 UTC1h 10m
2026-07-21 BCS17D SVG → CPH Jul 21, 18:20 UTCJul 21, 19:15 UTC55m
2026-07-21 BCS3165 BGO → SVG Jul 21, 17:10 UTCJul 21, 17:35 UTC25m
2026-07-21 BCS3164 - Jul 21, 07:20 UTCJul 21, 07:40 UTC20m
2026-07-21 BCS20X CPH → SVG Jul 21, 05:30 UTCJul 21, 06:25 UTC55m
2026-07-21 QY418 BRU → CPH Jul 21, 01:25 UTCJul 21, 02:45 UTC1h 20m
2026-07-20 BCS419 LEJ → BRU Jul 20, 21:55 UTCJul 20, 23:10 UTC1h 15m
2026-07-20 ADZ771P SAW → CPH Jul 20, 19:45 UTCJul 20, 20:30 UTC45m
2026-07-18 BCS861 - Jul 18, 14:45 UTCJul 18, 16:20 UTC1h 35m
2026-07-17 BCS3165 BGO → SVG Jul 17, 19:40 UTCJul 17, 20:10 UTC30m
2026-07-17 BCS3164 - Jul 17, 07:30 UTCJul 17, 07:50 UTC20m
2026-07-17 BCS20X CPH → SVG Jul 17, 05:50 UTCJul 17, 06:40 UTC50m
2026-07-17 BCS7NC - Jul 17, 01:20 UTCJul 17, 02:30 UTC1h 10m
2026-07-16 BCS3KC CPH → BRU Jul 16, 21:40 UTCJul 16, 23:05 UTC1h 25m
2026-07-16 BCS17D - Jul 16, 18:25 UTCJul 16, 19:25 UTC1h 0m
2026-07-16 BCS3165 - Jul 16, 17:14 UTCJul 16, 17:40 UTC25m
2026-07-16 BCS3164 - Jul 16, 07:05 UTCJul 16, 07:25 UTC20m
2026-07-16 BCS20X - Jul 16, 05:15 UTCJul 16, 06:10 UTC55m
2026-07-16 BCS7NC BRU → CPH Jul 16, 01:10 UTCJul 16, 02:30 UTC1h 20m
2026-07-15 BCS3KC CPH → BRU Jul 15, 22:00 UTCJul 15, 23:15 UTC1h 15m
2026-07-15 BCS17D - Jul 15, 18:45 UTCJul 15, 19:40 UTC55m
2026-07-15 BCS3165 - Jul 15, 17:05 UTCJul 15, 17:30 UTC25m
2026-07-15 BCS3164 - Jul 15, 07:50 UTCJul 15, 08:25 UTC35m
2026-07-15 BCS20X - Jul 15, 05:30 UTCJul 15, 06:20 UTC50m
2026-07-15 BCS7NC BRU → CPH Jul 15, 01:15 UTCJul 15, 02:25 UTC1h 10m
2026-07-14 BCS3KC CPH → BRU Jul 14, 21:55 UTCJul 14, 23:10 UTC1h 14m
2026-07-14 BCS17D - Jul 14, 18:45 UTCJul 14, 19:35 UTC50m
2026-07-14 BCS3165 - Jul 14, 17:30 UTCJul 14, 17:55 UTC25m
2026-07-14 BCS3164 CPH → BGO Jul 14, 08:10 UTCJul 14, 09:10 UTC1h 0m
2026-07-14 BCS7NC BRU → CPH Jul 14, 01:05 UTCJul 14, 02:20 UTC1h 15m
2026-07-13 BCS3KC CPH → BRU Jul 13, 21:50 UTCJul 13, 23:05 UTC1h 15m
2026-07-13 BCS17D - Jul 13, 18:40 UTCJul 13, 19:30 UTC50m
2026-07-13 BCS3165 BGO → SVG Jul 13, 17:25 UTCJul 13, 17:50 UTC25m
2026-07-13 BCS3164 CPH → BGO Jul 13, 04:05 UTCJul 13, 05:05 UTC1h 0m
2026-07-10 BCS17D - Jul 10, 18:10 UTCJul 10, 19:05 UTC55m

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 LZ-CXC page for operator, model, and routing details .

Mode-S 452112 frequently asked

What is Mode-S code 452112?
452112 is an ICAO 24-bit transponder address. Allocated to Bulgaria. Assigned to LZ-CXC.
Where is Mode-S 452112 registered?
Mode-S code 452112 is allocated to Bulgaria (BG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 452112 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 19:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 452112, octal 21220422, decimal 4,530,450.
What flights does 452112 operate?
Mode-S 452112 has broadcast 12 distinct callsigns, including BCS3165, BCS17D, BCS3164, BCS3KC, BCS20X.