Apparatus

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sensors Mode-S transponder

7820A6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-225D · BOEING 737 MAX 8

Hex
7820A6
Octal
36020246
Decimal
7,872,678
Country
CN
Tail
B-225D
Type
B38M
No current signal · last broadcast 6h ago
Flights observed
166
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7820A6.

Country allocation

The ICAO 24-bit address 7820A6 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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
CSN5095 - 22 2026-07-13
CSN8302 - 17 2026-07-10
CSN8301 - 17 2026-07-10
CSN5096 - 16 2026-07-13
CSN367 - 16 2026-07-11
CSN8019 - 10 2026-07-14
CSN5035 - 9 2026-07-13
CSN373 - 8 2026-07-07
CSN5036 - 7 2026-07-13
CSN368 - 7 2026-07-04
CSN8020 - 6 2026-07-14
CSN374 China Southern Airlines 4 2026-06-22
CSN8071 China Southern Airlines 3 2026-05-13
CSN6052 China Southern Airlines 3 2026-06-10
CSN6051 China Southern Airlines 3 2026-06-10
CSN8072 China Southern Airlines 2 2026-05-13
CSN3048 - 2 2026-07-11
CSN3047 - 2 2026-07-11
CSN8348 China Southern Airlines 1 2026-05-30
CSN8347 China Southern Airlines 1 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN8020 - Jul 14, 13:15 UTCJul 14, 13:25 UTC10m
2026-07-14 CSN8019 - Jul 14, 11:10 UTCJul 14, 11:35 UTC25m
2026-07-14 CSN8019 - Jul 14, 09:20 UTCJul 14, 09:55 UTC35m
2026-07-13 CSN5036 - Jul 13, 17:50 UTCJul 13, 18:10 UTC20m
2026-07-13 CSN5035 - Jul 13, 16:00 UTCJul 13, 16:25 UTC25m
2026-07-13 CSN5096 - Jul 13, 08:25 UTCJul 13, 08:35 UTC10m
2026-07-13 CSN5095 - Jul 13, 06:30 UTCJul 13, 06:40 UTC10m
2026-07-13 CSN5095 - Jul 13, 04:30 UTCJul 13, 04:40 UTC10m
2026-07-11 CSN367 - Jul 11, 12:45 UTCJul 11, 12:55 UTC10m
2026-07-11 CSN3048 - Jul 11, 07:05 UTCJul 11, 07:15 UTC10m
2026-07-11 CSN3047 - Jul 11, 02:00 UTCJul 11, 05:25 UTC3h 25m
2026-07-10 CSN8302 - Jul 10, 10:10 UTCJul 10, 10:25 UTC15m
2026-07-10 CSN8301 - Jul 10, 08:15 UTCJul 10, 08:45 UTC30m
2026-07-09 CSN5096 - Jul 9, 08:30 UTCJul 9, 09:00 UTC30m
2026-07-09 CSN5095 - Jul 9, 04:00 UTCJul 9, 06:25 UTC2h 25m
2026-07-08 CSN5096 - Jul 8, 10:40 UTCJul 8, 12:15 UTC1h 35m
2026-07-08 CSN5095 - Jul 8, 07:45 UTCJul 8, 09:20 UTC1h 35m
2026-07-07 CSN373 - Jul 7, 05:35 UTCJul 7, 05:45 UTC10m
2026-07-06 CSN367 - Jul 6, 13:15 UTCJul 6, 13:35 UTC20m
2026-07-06 CSN3048 - Jul 6, 07:05 UTCJul 6, 07:20 UTC15m
2026-07-06 CSN3047 - Jul 6, 01:40 UTCJul 6, 05:05 UTC3h 25m
2026-07-04 CSN8302 - Jul 4, 15:30 UTCJul 4, 18:10 UTC2h 40m
2026-07-04 CSN8301 - Jul 4, 13:30 UTCJul 4, 14:05 UTC35m
2026-07-04 CSN8301 - Jul 4, 10:40 UTCJul 4, 11:00 UTC20m
2026-07-04 CSN368 - Jul 4, 03:20 UTCJul 4, 03:35 UTC15m
2026-07-03 CSN367 - Jul 3, 15:55 UTCJul 3, 16:10 UTC15m
2026-07-02 CSN367 - Jul 2, 14:10 UTCJul 3, 12:35 UTC22h 25m
2026-07-02 CSN373 - Jul 2, 05:15 UTCJul 2, 05:35 UTC20m
2026-07-01 CSN368 - Jul 1, 13:35 UTCJul 2, 02:50 UTC13h 15m
2026-07-01 CSN5096 - Jul 1, 09:05 UTCJul 1, 09:20 UTC15m
2026-07-01 CSN5095 - Jul 1, 07:20 UTCJul 1, 07:45 UTC25m
2026-07-01 CSN5095 - Jul 1, 06:05 UTCJul 1, 06:15 UTC10m
2026-06-30 CSN5095 - Jun 30, 10:45 UTCJul 1, 06:15 UTC19h 30m
2026-06-30 CSN373 - Jun 30, 05:55 UTCJun 30, 10:50 UTC4h 55m
2026-06-28 CSN8302 - Jun 28, 14:04 UTCJun 28, 14:19 UTC15m
2026-06-28 CSN8302 - Jun 28, 11:25 UTCJun 28, 11:39 UTC15m
2026-06-28 CSN8301 - Jun 28, 06:44 UTCJun 28, 09:55 UTC3h 10m
2026-06-27 CSN367 - Jun 27, 12:39 UTCJun 28, 02:29 UTC13h 50m
2026-06-27 CSN5096 - Jun 27, 08:25 UTCJun 27, 10:00 UTC1h 35m
2026-06-26 CSN5095 - Jun 26, 12:29 UTCJun 27, 06:19 UTC17h 50m
2026-06-26 CSN8302 - Jun 26, 10:10 UTCJun 26, 10:20 UTC10m
2026-06-26 CSN8301 - Jun 26, 08:00 UTCJun 26, 08:40 UTC40m
2026-06-25 CSN3844 - Jun 25, 07:30 UTCJun 25, 07:39 UTC10m
2026-06-24 CSN8302 - Jun 24, 10:55 UTCJun 24, 13:40 UTC2h 45m
2026-06-24 CSN8301 - Jun 24, 05:24 UTCJun 24, 09:05 UTC3h 40m
2026-06-24 CSN368 SGN → WUH Jun 24, 02:20 UTCJun 24, 02:40 UTC20m
2026-06-23 CSN367 - Jun 23, 12:55 UTCJun 23, 13:05 UTC10m
2026-06-23 CSN5096 - Jun 23, 08:20 UTCJun 23, 09:49 UTC1h 30m
2026-06-23 CSN5095 - Jun 23, 04:50 UTCJun 23, 06:24 UTC1h 35m
2026-06-22 CSN5095 - Jun 22, 10:10 UTCJun 23, 06:24 UTC20h 15m

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 B-225D page for operator, model, and routing details .

Mode-S 7820A6 frequently asked

What is Mode-S code 7820A6?
7820A6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-225D.
Where is Mode-S 7820A6 registered?
Mode-S code 7820A6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820A6 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820A6, octal 36020246, decimal 7,872,678.
What flights does 7820A6 operate?
Mode-S 7820A6 has broadcast 20 distinct callsigns, including CSN5095, CSN8302, CSN8301, CSN5096, CSN367.