Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4520D2

ICAO 24-bit transponder address · allocated to Bulgaria

Currently assigned to LZ-CGA · BOEING 737-800

Hex
4520D2
Octal
21220322
Decimal
4,530,386
Country
BG
Tail
LZ-CGA
Type
B738
No current signal · last broadcast 10h ago
Flights observed
169
Distinct callsigns
16
Country
BG
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4520D2.

Country allocation

The ICAO 24-bit address 4520D2 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 16 distinct

Callsign Airline Flights Last seen
CGF1808 - 53 2026-07-16
CGF1809 - 52 2026-07-16
CGF1906 - 21 2026-07-02
CGF1907 - 19 2026-07-02
CGF7828 - 5 2026-07-17
CGF7827 - 5 2026-07-17
CGF7881 - 2 2026-06-16
CGF7880 - 2 2026-06-16
CGF6228 - 2 2026-06-26
CGF6227 - 2 2026-06-26
CGF7981 - 1 2026-06-30
CGF7980 - 1 2026-06-30
CGF7807 - 1 2026-05-13
CGF7806 - 1 2026-05-13
CGF7801 Cargo Air 1 2026-04-23
CGF7800 Cargo Air 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CGF7827 BER → CGN Jul 17, 21:25 UTCJul 17, 22:20 UTC55m
2026-07-17 CGF7828 CGN → BER Jul 17, 02:59 UTCJul 17, 03:39 UTC40m
2026-07-16 CGF1809 OTP → CGN Jul 16, 21:15 UTCJul 16, 23:35 UTC2h 20m
2026-07-16 CGF1808 - Jul 16, 05:10 UTCJul 16, 05:40 UTC30m
2026-07-16 CGF1808 - Jul 16, 02:35 UTCJul 16, 04:05 UTC1h 30m
2026-07-15 CGF7827 BER → CGN Jul 15, 21:20 UTCJul 15, 22:15 UTC55m
2026-07-15 CGF7828 CGN → BER Jul 15, 03:00 UTCJul 15, 03:40 UTC40m
2026-07-09 CGF1809 OTP → CGN Jul 9, 20:55 UTCJul 9, 22:55 UTC2h 0m
2026-07-09 CGF1809 OTP → CGN Jul 9, 19:20 UTCJul 9, 19:50 UTC30m
2026-07-09 CGF1808 - Jul 9, 05:05 UTCJul 9, 05:35 UTC30m
2026-07-09 CGF1808 - Jul 9, 02:35 UTCJul 9, 04:05 UTC1h 30m
2026-07-03 CGF1809 OTP → CGN Jul 3, 20:40 UTCJul 3, 22:50 UTC2h 10m
2026-07-03 CGF1809 OTP → CGN Jul 3, 19:00 UTCJul 3, 19:30 UTC30m
2026-07-03 CGF1808 - Jul 3, 05:05 UTCJul 3, 05:35 UTC30m
2026-07-03 CGF1808 - Jul 3, 02:30 UTCJul 3, 04:05 UTC1h 35m
2026-07-02 CGF1907 TLV → CGN Jul 2, 16:05 UTCJul 2, 20:15 UTC4h 10m
2026-07-02 CGF1906 CGN → TLV Jul 2, 09:45 UTCJul 2, 13:35 UTC3h 50m
2026-07-01 CGF1809 OTP → CGN Jul 1, 22:40 UTCJul 2, 00:25 UTC1h 45m
2026-07-01 CGF1809 OTP → CGN Jul 1, 19:20 UTCJul 1, 19:45 UTC25m
2026-07-01 CGF1808 - Jul 1, 05:20 UTCJul 1, 05:55 UTC35m
2026-07-01 CGF1808 - Jul 1, 02:40 UTCJul 1, 04:15 UTC1h 35m
2026-06-30 CGF7981 - Jun 30, 20:20 UTCJun 30, 21:45 UTC1h 25m
2026-06-30 CGF7980 - Jun 30, 02:40 UTCJun 30, 03:55 UTC1h 15m
2026-06-29 CGF1809 OTP → CGN Jun 29, 20:54 UTCJun 29, 22:44 UTC1h 50m
2026-06-29 CGF1809 OTP → CGN Jun 29, 19:00 UTCJun 29, 19:29 UTC30m
2026-06-29 CGF1808 - Jun 29, 05:09 UTCJun 29, 05:40 UTC30m
2026-06-29 CGF1808 - Jun 29, 02:09 UTCJun 29, 04:04 UTC1h 55m
2026-06-26 CGF6227 BER → CGN Jun 26, 21:20 UTCJun 26, 22:25 UTC1h 5m
2026-06-26 CGF6228 CGN → BER Jun 26, 02:50 UTCJun 26, 03:34 UTC45m
2026-06-25 CGF1907 TLV → CGN Jun 25, 19:29 UTCJun 25, 23:44 UTC4h 15m
2026-06-25 CGF1906 CGN → TLV Jun 25, 13:50 UTCJun 25, 17:39 UTC3h 50m
2026-06-25 CGF6227 BER → CGN Jun 25, 04:10 UTCJun 25, 05:00 UTC50m
2026-06-24 CGF6228 CGN → BER Jun 24, 02:54 UTCJun 24, 03:40 UTC45m
2026-06-23 CGF7827 BER → CGN Jun 23, 21:20 UTCJun 23, 22:15 UTC55m
2026-06-23 CGF7828 CGN → BER Jun 23, 03:00 UTCJun 23, 03:45 UTC45m
2026-06-22 CGF1809 OTP → CGN Jun 22, 20:44 UTCJun 22, 22:40 UTC1h 55m
2026-06-22 CGF1809 OTP → CGN Jun 22, 18:54 UTCJun 22, 19:24 UTC30m
2026-06-22 CGF1808 - Jun 22, 05:10 UTCJun 22, 05:44 UTC35m
2026-06-22 CGF1808 - Jun 22, 02:19 UTCJun 22, 03:54 UTC1h 35m
2026-06-19 CGF7827 BER → CGN Jun 19, 21:14 UTCJun 19, 22:24 UTC1h 10m
2026-06-19 CGF7828 - Jun 19, 02:54 UTCJun 19, 03:39 UTC45m
2026-06-16 CGF7881 - Jun 16, 20:10 UTCJun 16, 21:35 UTC1h 25m
2026-06-16 CGF7880 - Jun 16, 03:20 UTCJun 16, 04:35 UTC1h 15m
2026-06-15 CGF1809 OTP → CGN Jun 15, 21:04 UTCJun 15, 23:19 UTC2h 15m
2026-06-15 CGF1809 OTP → CGN Jun 15, 19:00 UTCJun 15, 19:30 UTC30m
2026-06-15 CGF1808 - Jun 15, 05:04 UTCJun 15, 05:40 UTC35m
2026-06-15 CGF1808 - Jun 15, 02:35 UTCJun 15, 04:00 UTC1h 25m
2026-06-12 CGF1809 OTP → CGN Jun 12, 22:05 UTCJun 13, 00:05 UTC2h 0m
2026-06-12 CGF1809 OTP → CGN Jun 12, 20:20 UTCJun 12, 20:55 UTC35m
2026-06-12 CGF1808 CGN → OTP Jun 12, 06:40 UTCJun 12, 08:40 UTC2h 0m

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

Mode-S 4520D2 frequently asked

What is Mode-S code 4520D2?
4520D2 is an ICAO 24-bit transponder address. Allocated to Bulgaria. Assigned to LZ-CGA.
Where is Mode-S 4520D2 registered?
Mode-S code 4520D2 is allocated to Bulgaria (BG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4520D2 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4520D2, octal 21220322, decimal 4,530,386.
What flights does 4520D2 operate?
Mode-S 4520D2 has broadcast 16 distinct callsigns, including CGF1808, CGF1809, CGF1906, CGF1907, CGF7828.