Apparatus

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sensors Mode-S transponder

452087

ICAO 24-bit transponder address · allocated to Bulgaria

Currently assigned to LZ-BHM · AIRBUS A-320

Hex
452087
Octal
21220207
Decimal
4,530,311
Country
BG
Tail
LZ-BHM
Type
A320
No current signal · last broadcast 7h ago
Flights observed
181
Distinct callsigns
20
Country
BG
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 452087.

Country allocation

The ICAO 24-bit address 452087 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 20 distinct

Callsign Airline Flights Last seen
UBD115 - 20 2026-07-10
UBD438 - 18 2026-06-30
UBD482 - 14 2026-07-11
UBD431 - 12 2026-07-12
UBD496 - 11 2026-07-01
UBD495 - 11 2026-06-24
UBD437 - 11 2026-06-15
UBD435 - 11 2026-07-06
UBD432 - 11 2026-07-12
UBD442 - 10 2026-07-09
UBD116 - 10 2026-07-10
UBD762 - 6 2026-07-13
UBD761 United Airways 5 2026-06-04
UBD481 - 4 2026-07-07
UBD446 - 4 2026-07-13
UBD441 - 4 2026-07-08
UBD427 - 4 2026-07-11
UBD463 - 3 2026-07-11
UBD445 United Airways 2 2026-05-11
UBD436 - 2 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UBD762 - Jul 13, 19:55 UTCJul 13, 20:25 UTC30m
2026-07-13 UBD446 - Jul 13, 09:55 UTCJul 13, 17:20 UTC7h 25m
2026-07-12 UBD432 - Jul 12, 22:00 UTCJul 13, 00:35 UTC2h 35m
2026-07-12 UBD431 FRA → CPH Jul 12, 11:01 UTCJul 12, 20:40 UTC9h 40m
2026-07-11 UBD427 - Jul 11, 19:15 UTCJul 12, 08:25 UTC13h 10m
2026-07-11 UBD463 - Jul 11, 17:40 UTCJul 11, 18:00 UTC20m
2026-07-11 UBD482 - Jul 11, 10:20 UTCJul 11, 13:10 UTC2h 50m
2026-07-10 UBD116 - Jul 10, 18:50 UTCJul 10, 21:50 UTC3h 0m
2026-07-10 UBD115 - Jul 10, 14:00 UTCJul 10, 16:00 UTC2h 0m
2026-07-09 UBD115 - Jul 9, 18:25 UTCJul 10, 11:35 UTC17h 10m
2026-07-09 UBD442 - Jul 9, 09:20 UTCJul 9, 16:45 UTC7h 25m
2026-07-08 UBD441 HAJ → MUC Jul 8, 21:10 UTCJul 9, 07:30 UTC10h 20m
2026-07-08 UBD482 - Jul 8, 09:25 UTCJul 8, 19:45 UTC10h 20m
2026-07-07 UBD481 - Jul 7, 22:25 UTCJul 8, 07:45 UTC9h 20m
2026-07-07 UBD431 DUS → CPH Jul 7, 09:50 UTCJul 7, 20:55 UTC11h 5m
2026-07-06 UBD436 CGN → DUS Jul 6, 21:20 UTCJul 7, 07:45 UTC10h 25m
2026-07-06 UBD435 - Jul 6, 16:45 UTCJul 6, 19:55 UTC3h 10m
2026-07-05 UBD435 - Jul 5, 23:50 UTCJul 6, 19:55 UTC20h 5m
2026-07-05 UBD435 CPH → CGN Jul 5, 22:15 UTCJul 6, 19:55 UTC21h 40m
2026-07-05 UBD431 - Jul 5, 10:40 UTCJul 5, 20:50 UTC10h 10m
2026-07-04 UBD432 CPH → FRA Jul 4, 22:15 UTCJul 5, 08:45 UTC10h 30m
2026-07-04 UBD431 - Jul 4, 09:50 UTCJul 4, 20:50 UTC11h 0m
2026-07-03 UBD116 LGW → EBL Jul 3, 18:20 UTCJul 4, 07:45 UTC13h 25m
2026-07-03 UBD115 RJK → LGW Jul 3, 14:00 UTCJul 3, 16:05 UTC2h 5m
2026-07-03 UBD115 RJK → LGW Jul 3, 05:55 UTCJul 3, 12:05 UTC6h 10m
2026-07-03 UBD463 - Jul 3, 04:35 UTCJul 3, 04:50 UTC15m
2026-07-02 UBD772 - Jul 2, 20:30 UTCJul 2, 21:10 UTC40m
2026-07-02 UBD762 - Jul 2, 18:20 UTCJul 2, 19:15 UTC55m
2026-07-02 UBD442 MUC → EBL Jul 2, 09:35 UTCJul 2, 17:05 UTC7h 30m
2026-07-01 UBD496 HAJ → MUC Jul 1, 21:35 UTCJul 2, 07:10 UTC9h 35m
2026-07-01 UBD482 STR → HAJ Jul 1, 09:35 UTCJul 1, 19:40 UTC10h 5m
2026-06-30 UBD432 - Jun 30, 21:45 UTCJul 1, 07:45 UTC10h 0m
2026-06-30 UBD438 - Jun 30, 09:50 UTCJun 30, 20:15 UTC10h 25m
2026-06-29 UBD436 CGN → EBL Jun 29, 20:44 UTCJun 30, 07:50 UTC11h 6m
2026-06-28 UBD435 - Jun 28, 23:50 UTCJun 29, 19:09 UTC19h 20m
2026-06-28 UBD435 - Jun 28, 22:10 UTCJun 29, 19:09 UTC21h 0m
2026-06-28 UBD428 FRA → EBL Jun 28, 11:00 UTCJun 28, 20:25 UTC9h 25m
2026-06-27 UBD427 EBL → FRA Jun 27, 22:20 UTCJun 28, 08:39 UTC10h 20m
2026-06-27 UBD431 DUS → CPH Jun 27, 09:50 UTCJun 27, 20:24 UTC10h 35m
2026-06-26 UBD116 LGW → EBL Jun 26, 19:14 UTCJun 27, 07:39 UTC12h 25m
2026-06-26 UBD115 RJK → LGW Jun 26, 14:29 UTCJun 26, 16:30 UTC2h 0m
2026-06-26 UBD115 RJK → LGW Jun 26, 06:50 UTCJun 26, 12:55 UTC6h 5m
2026-06-25 UBD762 - Jun 25, 18:29 UTCJun 26, 05:30 UTC11h 0m
2026-06-25 UBD442 MUC → EBL Jun 25, 10:04 UTCJun 25, 17:14 UTC7h 10m
2026-06-24 UBD496 HAJ → MUC Jun 24, 21:40 UTCJun 25, 07:25 UTC9h 45m
2026-06-24 UBD495 - Jun 24, 17:05 UTCJun 24, 19:55 UTC2h 50m
2026-06-23 UBD495 - Jun 23, 23:50 UTCJun 24, 19:55 UTC20h 5m
2026-06-23 UBD495 - Jun 23, 22:15 UTCJun 24, 19:55 UTC21h 40m
2026-06-23 UBD431 - Jun 23, 17:44 UTCJun 23, 20:49 UTC3h 5m
2026-06-21 UBD432 - Jun 21, 23:55 UTCJun 22, 03:24 UTC3h 30m

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

Mode-S 452087 frequently asked

What is Mode-S code 452087?
452087 is an ICAO 24-bit transponder address. Allocated to Bulgaria. Assigned to LZ-BHM.
Where is Mode-S 452087 registered?
Mode-S code 452087 is allocated to Bulgaria (BG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 452087 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 452087, octal 21220207, decimal 4,530,311.
What flights does 452087 operate?
Mode-S 452087 has broadcast 20 distinct callsigns, including UBD115, UBD438, UBD482, UBD431, UBD496.