Apparatus

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sensors Mode-S transponder

452169

ICAO 24-bit transponder address · allocated to Bulgaria

Currently assigned to LZ-EAJ · AIRBUS A-320

Hex
452169
Octal
21220551
Decimal
4,530,537
Country
BG
Tail
LZ-EAJ
Type
A320
No current signal · last broadcast 9h ago
Flights observed
220
Distinct callsigns
20
Country
BG
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 452169.

Country allocation

The ICAO 24-bit address 452169 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
MSC2950 - 35 2026-07-07
MSC2970 - 27 2026-07-12
MSC2971 - 22 2026-07-13
MSC2943 - 18 2026-07-11
MSC2951 - 16 2026-07-07
MSC3605 - 15 2026-07-01
MSC2960 - 14 2026-07-07
MSC2942 - 14 2026-07-09
MSC3606 - 10 2026-07-09
MSC3609 - 7 2026-07-05
MSC3610 - 6 2026-07-02
MSC2966 - 6 2026-07-10
MSC2961 - 6 2026-07-08
MSC2967 - 5 2026-07-11
MSC3601 - 4 2026-05-28
MSC2920 - 3 2026-06-28
MSC3614 - 2 2026-06-04
MSC3613 - 2 2026-06-03
MSC3611 - 2 2026-05-31
MSC3602 - 2 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 MSC2971 - Jul 13, 13:35 UTCJul 13, 17:40 UTC4h 5m
2026-07-12 MSC2970 - Jul 12, 16:20 UTCJul 13, 11:55 UTC19h 35m
2026-07-12 MSC2970 - Jul 12, 14:20 UTCJul 13, 11:55 UTC21h 35m
2026-07-12 MSC2970 FRA → HAM Jul 12, 13:01 UTCJul 13, 11:55 UTC22h 55m
2026-07-11 MSC2967 NUE → FRA Jul 11, 23:45 UTCJul 12, 10:50 UTC11h 5m
2026-07-11 MSC2943 FRA → NUE Jul 11, 12:35 UTCJul 11, 22:25 UTC9h 50m
2026-07-10 MSC2967 NUE → FRA Jul 10, 23:50 UTCJul 11, 10:50 UTC11h 0m
2026-07-10 MSC2966 - Jul 10, 18:50 UTCJul 10, 22:35 UTC3h 45m
2026-07-10 MSC2943 - Jul 10, 12:50 UTCJul 10, 16:40 UTC3h 50m
2026-07-09 MSC2942 - Jul 9, 18:25 UTCJul 10, 11:10 UTC16h 45m
2026-07-09 MSC3606 - Jul 9, 07:55 UTCJul 9, 17:10 UTC9h 15m
2026-07-08 MSC2961 - Jul 8, 13:45 UTCJul 9, 06:40 UTC16h 55m
2026-07-07 MSC2960 - Jul 7, 16:20 UTCJul 8, 12:10 UTC19h 50m
2026-07-07 MSC2960 - Jul 7, 14:50 UTCJul 8, 12:10 UTC21h 20m
2026-07-07 MSC2951 STR → STR Jul 7, 14:35 UTCJul 7, 14:40 UTC5m
2026-07-07 MSC2950 - Jul 7, 10:15 UTCJul 7, 13:30 UTC3h 15m
2026-07-06 MSC2950 - Jul 6, 16:20 UTCJul 7, 13:30 UTC21h 10m
2026-07-06 MSC2950 - Jul 6, 14:20 UTCJul 7, 13:30 UTC23h 10m
2026-07-06 MSC2971 - Jul 6, 13:35 UTCJul 7, 12:15 UTC22h 40m
2026-07-05 MSC2970 - Jul 5, 17:30 UTCJul 6, 12:10 UTC18h 40m
2026-07-05 MSC3609 - Jul 5, 12:50 UTCJul 5, 16:15 UTC3h 25m
2026-07-04 MSC3609 - Jul 4, 16:20 UTCJul 5, 16:15 UTC23h 55m
2026-07-04 MSC2971 - Jul 4, 14:20 UTCJul 5, 14:15 UTC23h 55m
2026-07-04 MSC2971 - Jul 4, 13:40 UTCJul 4, 17:35 UTC3h 55m
2026-07-03 MSC2970 NUE → HAM Jul 3, 23:55 UTCJul 4, 12:00 UTC12h 5m
2026-07-03 MSC2943 FRA → HRG Jul 3, 12:40 UTCJul 3, 22:15 UTC9h 35m
2026-07-02 MSC3610 - Jul 2, 18:45 UTCJul 3, 10:50 UTC16h 5m
2026-07-02 MSC3606 - Jul 2, 08:05 UTCJul 2, 17:25 UTC9h 20m
2026-07-01 MSC3605 - Jul 1, 13:25 UTCJul 2, 06:15 UTC16h 50m
2026-06-30 MSC2951 - Jun 30, 16:25 UTCJul 1, 11:55 UTC19h 30m
2026-06-30 MSC2951 STR → BER Jun 30, 15:40 UTCJul 1, 11:55 UTC20h 15m
2026-06-30 MSC2950 - Jun 30, 09:50 UTCJun 30, 13:15 UTC3h 25m
2026-06-29 MSC2950 - Jun 29, 16:19 UTCJun 30, 13:15 UTC20h 55m
2026-06-29 MSC2971 HRA → STR Jun 29, 14:19 UTCJun 30, 13:15 UTC22h 55m
2026-06-29 MSC2971 - Jun 29, 13:39 UTCJun 30, 12:15 UTC22h 36m
2026-06-28 MSC2921 ZRH → HAM Jun 28, 17:19 UTCJun 29, 12:14 UTC18h 55m
2026-06-28 MSC2920 - Jun 28, 15:49 UTCJun 28, 16:00 UTC10m
2026-06-28 MSC2920 - Jun 28, 12:09 UTCJun 28, 15:40 UTC3h 30m
2026-06-27 MSC2971 - Jun 27, 14:20 UTCJun 28, 14:14 UTC23h 55m
2026-06-27 MSC2971 - Jun 27, 13:44 UTCJun 28, 12:15 UTC22h 30m
2026-06-26 MSC2970 NUE → HAM Jun 26, 23:49 UTCJun 27, 11:25 UTC11h 35m
2026-06-26 MSC2966 - Jun 26, 18:54 UTCJun 26, 22:34 UTC3h 40m
2026-06-26 MSC2943 FRA → HRG Jun 26, 12:55 UTCJun 26, 16:49 UTC3h 55m
2026-06-25 MSC3610 - Jun 25, 18:39 UTCJun 26, 11:09 UTC16h 30m
2026-06-25 MSC3609 - Jun 25, 07:49 UTCJun 25, 17:20 UTC9h 30m
2026-06-24 MSC554 PRG → STR Jun 24, 17:50 UTCJun 25, 06:00 UTC12h 10m
2026-06-24 MSC553 BEG → PRG Jun 24, 04:44 UTCJun 24, 16:24 UTC11h 40m
2026-06-23 MSC2951 STR → BEG Jun 23, 14:49 UTCJun 24, 03:29 UTC12h 40m
2026-06-23 MSC2950 - Jun 23, 10:04 UTCJun 23, 13:24 UTC3h 20m
2026-06-22 MSC2950 - Jun 22, 16:20 UTCJun 23, 13:24 UTC21h 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 LZ-EAJ page for operator, model, and routing details .

Mode-S 452169 frequently asked

What is Mode-S code 452169?
452169 is an ICAO 24-bit transponder address. Allocated to Bulgaria. Assigned to LZ-EAJ.
Where is Mode-S 452169 registered?
Mode-S code 452169 is allocated to Bulgaria (BG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 452169 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 452169, octal 21220551, decimal 4,530,537.
What flights does 452169 operate?
Mode-S 452169 has broadcast 20 distinct callsigns, including MSC2950, MSC2970, MSC2971, MSC2943, MSC2951.