Apparatus

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sensors Mode-S transponder

452175

ICAO 24-bit transponder address · allocated to Bulgaria

Currently assigned to LZ-PPL · CESSNA 525A Citation CJ2

Hex
452175
Octal
21220565
Decimal
4,530,549
Country
BG
Tail
LZ-PPL
Type
C25A
No current signal · last broadcast 1d ago
Flights observed
73
Distinct callsigns
1
Country
BG
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 452175.

Country allocation

The ICAO 24-bit address 452175 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 1 distinct

Callsign Airline Flights Last seen
PJJ525A - 73 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 PJJ525A - Jul 4, 12:30 UTCJul 4, 13:05 UTC35m
2026-07-04 PJJ525A - Jul 4, 07:30 UTCJul 4, 09:20 UTC1h 50m
2026-07-04 PJJ525A BUD → PSA Jul 4, 04:30 UTCJul 4, 05:50 UTC1h 20m
2026-07-03 PJJ525A - Jul 3, 13:05 UTCJul 3, 15:10 UTC2h 5m
2026-07-03 PJJ525A - Jul 3, 10:00 UTCJul 3, 11:25 UTC1h 25m
2026-07-02 PJJ525A ZRH → FKB Jul 2, 16:25 UTCJul 2, 16:55 UTC30m
2026-07-02 PJJ525A - Jul 2, 14:50 UTCJul 2, 15:30 UTC40m
2026-07-02 PJJ525A HAM → LUX Jul 2, 12:35 UTCJul 2, 13:30 UTC55m
2026-07-01 PJJ525A SOF → HAM Jul 1, 08:25 UTCJul 1, 10:45 UTC2h 20m
2026-06-29 PJJ525A - Jun 29, 17:19 UTCJun 29, 17:59 UTC40m
2026-06-29 PJJ525A - Jun 29, 15:54 UTCJun 29, 16:29 UTC35m
2026-06-29 PJJ525A - Jun 29, 07:15 UTCJun 29, 09:44 UTC2h 30m
2026-06-28 PJJ525A MXP → HAM Jun 28, 18:25 UTCJun 28, 19:44 UTC1h 20m
2026-06-28 PJJ525A - Jun 28, 14:45 UTCJun 28, 15:20 UTC35m
2026-06-28 PJJ525A - Jun 28, 10:19 UTCJun 28, 13:00 UTC2h 40m
2026-06-26 PJJ525A - Jun 26, 16:20 UTCJun 26, 17:50 UTC1h 30m
2026-06-26 PJJ525A - Jun 26, 13:19 UTCJun 26, 15:15 UTC1h 55m
2026-06-26 PJJ525A - Jun 26, 10:15 UTCJun 26, 11:24 UTC1h 10m
2026-06-26 PJJ525A - Jun 26, 08:05 UTCJun 26, 08:40 UTC35m
2026-06-21 PJJ525A - Jun 21, 11:05 UTCJun 21, 11:30 UTC25m
2026-06-19 PJJ525A SOF → BOJ Jun 19, 11:20 UTCJun 19, 11:59 UTC40m
2026-06-17 PJJ525A - Jun 17, 18:56 UTCJun 17, 19:45 UTC50m
2026-06-17 PJJ525A NCE → ATH Jun 17, 15:50 UTCJun 17, 18:10 UTC2h 20m
2026-06-17 PJJ525A FCO → NCE Jun 17, 13:50 UTCJun 17, 14:40 UTC50m
2026-06-17 PJJ525A - Jun 17, 07:45 UTCJun 17, 09:05 UTC1h 20m
2026-06-16 PJJ525A - Jun 16, 19:00 UTCJun 16, 19:45 UTC45m
2026-06-16 PJJ525A - Jun 16, 16:00 UTCJun 16, 17:30 UTC1h 30m
2026-06-16 PJJ525A - Jun 16, 13:55 UTCJun 16, 14:45 UTC50m
2026-06-15 PJJ525A - Jun 15, 10:00 UTCJun 15, 11:49 UTC1h 50m
2026-06-14 PJJ525A - Jun 14, 17:15 UTCJun 14, 17:45 UTC30m
2026-06-14 PJJ525A NCE → CIA Jun 14, 15:50 UTCJun 14, 16:40 UTC50m
2026-06-14 PJJ525A - Jun 14, 12:05 UTCJun 14, 13:45 UTC1h 40m
2026-06-12 PJJ525A - Jun 12, 13:05 UTCJun 12, 15:35 UTC2h 30m
2026-06-12 PJJ525A - Jun 12, 09:20 UTCJun 12, 10:45 UTC1h 25m
2026-06-12 PJJ525A ZRH → STR Jun 12, 06:40 UTCJun 12, 07:05 UTC25m
2026-06-11 PJJ525A - Jun 11, 17:20 UTCJun 11, 18:05 UTC45m
2026-06-10 PJJ525A ZRH → SZG Jun 10, 18:25 UTCJun 10, 19:00 UTC35m
2026-06-10 PJJ525A - Jun 10, 14:30 UTCJun 10, 16:15 UTC1h 45m
2026-06-10 PJJ525A NCE → RZE Jun 10, 11:30 UTCJun 10, 13:15 UTC1h 45m
2026-06-10 PJJ525A BCN → NCE Jun 10, 07:55 UTCJun 10, 08:50 UTC55m
2026-06-09 PJJ525A MLA → BCN Jun 9, 18:05 UTCJun 9, 20:05 UTC2h 0m
2026-06-09 PJJ525A TGM → MLA Jun 9, 13:20 UTCJun 9, 15:40 UTC2h 20m
2026-06-08 PJJ525A - Jun 8, 19:10 UTCJun 8, 21:15 UTC2h 5m
2026-06-08 PJJ525A - Jun 8, 18:00 UTCJun 8, 18:40 UTC40m
2026-06-08 PJJ525A - Jun 8, 16:00 UTCJun 8, 16:40 UTC40m
2026-06-08 PJJ525A - Jun 8, 14:00 UTCJun 8, 15:04 UTC1h 5m
2026-06-07 PJJ525A - Jun 7, 18:40 UTCJun 7, 19:55 UTC1h 15m
2026-06-07 PJJ525A - Jun 7, 16:00 UTCJun 7, 16:45 UTC45m
2026-06-06 PJJ525A - Jun 6, 13:49 UTCJun 6, 15:50 UTC2h 0m
2026-06-06 PJJ525A - Jun 6, 11:09 UTCJun 6, 12:45 UTC1h 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 LZ-PPL page for operator, model, and routing details .

Mode-S 452175 frequently asked

What is Mode-S code 452175?
452175 is an ICAO 24-bit transponder address. Allocated to Bulgaria. Assigned to LZ-PPL.
Where is Mode-S 452175 registered?
Mode-S code 452175 is allocated to Bulgaria (BG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 452175 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 452175, octal 21220565, decimal 4,530,549.
What flights does 452175 operate?
Mode-S 452175 has broadcast 1 distinct callsign, including PJJ525A.