Apparatus

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sensors Mode-S transponder

7809B2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6975 · AIRBUS A-320

Hex
7809B2
Octal
36004662
Decimal
7,866,802
Country
CN
Tail
B-6975
Type
A320
No current signal · last broadcast 7h ago
Flights observed
145
Distinct callsigns
20
Country
CN
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 7809B2.

Country allocation

The ICAO 24-bit address 7809B2 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
CSN8738 China Southern Airlines 4 2026-05-30
CSN5400 China Southern Airlines 4 2026-05-28
CSN3614 China Southern Airlines 4 2026-04-28
CSN8758 China Southern Airlines 3 2026-05-30
CSN8677 China Southern Airlines 3 2026-05-27
CSN8492 China Southern Airlines 3 2026-05-21
CSN8491 China Southern Airlines 3 2026-05-21
CSN5854 China Southern Airlines 3 2026-05-26
CSN5853 China Southern Airlines 3 2026-05-26
CSN5399 China Southern Airlines 3 2026-05-28
CSN3613 China Southern Airlines 3 2026-04-28
CSN8757 China Southern Airlines 2 2026-05-30
CSN8737 China Southern Airlines 2 2026-05-29
CSN8697 China Southern Airlines 2 2026-05-20
CSN8612 China Southern Airlines 2 2026-05-16
CSN8611 China Southern Airlines 2 2026-05-16
CSN8578 China Southern Airlines 2 2026-05-29
CSN8575 China Southern Airlines 2 2026-05-22
CSN8554 China Southern Airlines 2 2026-05-11
CSN8504 China Southern Airlines 2 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN3365 SZX → HGH May 30, 13:10 UTCMay 30, 13:25 UTC15m
2026-05-30 CSN8758 HAK → PVG May 30, 11:00 UTCMay 30, 11:10 UTC10m
2026-05-30 CSN8757 PVG → HAK May 30, 04:10 UTCMay 30, 04:20 UTC10m
2026-05-30 CSN8738 NGB → SZX May 30, 01:05 UTCMay 30, 01:30 UTC25m
2026-05-29 CSN8737 SZX → NGB May 29, 16:20 UTCMay 29, 16:30 UTC10m
2026-05-29 CSN5634 SHE → SZX May 29, 12:55 UTCMay 29, 13:30 UTC35m
2026-05-29 CSN5633 SZX → SHE May 29, 04:05 UTCMay 29, 10:20 UTC6h 15m
2026-05-29 CSN8578 WUH → SZX May 29, 01:30 UTCMay 29, 01:55 UTC25m
2026-05-28 CSN8577 SZX → WUH May 28, 13:20 UTCMay 28, 13:35 UTC15m
2026-05-28 CSN5400 NKG → SZX May 28, 11:25 UTCMay 28, 11:55 UTC30m
2026-05-28 CSN5399 SZX → NKG May 28, 06:00 UTCMay 28, 06:10 UTC10m
2026-05-27 CSN3323 CAN → ZHA May 27, 22:50 UTCMay 27, 23:45 UTC55m
2026-05-27 CSN6154 NGB → SZX May 27, 13:55 UTCMay 27, 14:05 UTC10m
2026-05-27 CSN6153 SZX → NGB May 27, 08:50 UTCMay 27, 09:00 UTC10m
2026-05-27 CSN8677 SZX → ENY May 27, 00:25 UTCMay 27, 00:39 UTC15m
2026-05-26 CSN5854 SYX → SZX May 26, 15:24 UTCMay 26, 15:49 UTC25m
2026-05-26 CSN5853 SZX → SYX May 26, 09:09 UTCMay 26, 09:25 UTC15m
2026-05-26 CSN3459 SZX → KMG May 26, 01:49 UTCMay 26, 02:10 UTC20m
2026-05-25 CSN3588 SHA → SZX May 25, 14:05 UTCMay 25, 15:05 UTC1h 0m
2026-05-25 CSN3587 SZX → SHA May 25, 09:15 UTCMay 25, 09:30 UTC15m
2026-05-25 CSN5102 YIW → SZX May 25, 06:55 UTCMay 25, 07:20 UTC25m
2026-05-25 CSN5101 SZX → YIW May 25, 02:30 UTCMay 25, 02:40 UTC10m
2026-05-24 CSN6549 SZX → NAO May 24, 14:55 UTCMay 24, 15:10 UTC15m
2026-05-24 CSN3562 SHA → SZX May 24, 12:25 UTCMay 24, 13:20 UTC55m
2026-05-24 CSN3561 SZX → SHA May 24, 07:20 UTCMay 24, 07:30 UTC10m
2026-05-23 CSN8965 - May 23, 05:00 UTCMay 23, 05:20 UTC20m
2026-05-23 CSN6444 HAK → SZX May 23, 02:25 UTCMay 23, 02:45 UTC19m
2026-05-22 CSN6443 SZX → HAK May 22, 23:10 UTCMay 22, 23:20 UTC10m
2026-05-22 CSN8575 SZX → HFE May 22, 08:05 UTCMay 22, 08:20 UTC15m
2026-05-22 CSN8798 TNA → SZX May 22, 06:25 UTCMay 22, 06:45 UTC20m
2026-05-22 CSN8797 SZX → TNA May 22, 00:40 UTCMay 22, 00:55 UTC15m
2026-05-21 CSN8492 TSN → SZX May 21, 17:50 UTCMay 21, 18:20 UTC30m
2026-05-21 CSN8491 SZX → TSN May 21, 06:45 UTCMay 21, 07:05 UTC20m
2026-05-21 CSN8504 NGB → SZX May 21, 04:15 UTCMay 21, 04:25 UTC10m
2026-05-20 CSN8697 SZX → DLU May 20, 07:15 UTCMay 20, 07:25 UTC10m
2026-05-20 CSN5149 SZX → DLU May 20, 00:10 UTCMay 20, 00:30 UTC20m
2026-05-19 CSN8576 HFE → SZX May 19, 14:45 UTCMay 19, 15:00 UTC15m
2026-05-19 CSN8575 SZX → HFE May 19, 10:20 UTCMay 19, 10:30 UTC10m
2026-05-19 CSN3460 KMG → SZX May 19, 07:25 UTCMay 19, 07:40 UTC15m
2026-05-19 CSN3459 SZX → KMG May 19, 02:40 UTCMay 19, 03:00 UTC20m
2026-05-18 CSN8491 SZX → TSN May 18, 05:30 UTCMay 18, 05:45 UTC15m
2026-05-18 CSN3352 - May 18, 03:45 UTCMay 18, 04:05 UTC20m
2026-05-17 CSN3351 - May 17, 23:00 UTCMay 17, 23:20 UTC20m
2026-05-17 CSN5102 YIW → SZX May 17, 02:50 UTCMay 17, 06:20 UTC3h 30m
2026-05-17 CSN5101 SZX → YIW May 17, 01:55 UTCMay 17, 02:05 UTC10m
2026-05-16 CSN8612 JHG → SZX May 16, 15:31 UTCMay 16, 15:40 UTC10m
2026-05-16 CSN8611 SZX → JHG May 16, 10:20 UTCMay 16, 10:35 UTC15m
2026-05-16 CSN8758 HAK → PVG May 16, 08:36 UTCMay 16, 08:55 UTC20m
2026-05-16 CSN8758 HAK → PVG May 16, 07:31 UTCMay 16, 07:55 UTC25m
2026-05-16 CSN8757 PVG → HAK May 16, 01:10 UTCMay 16, 01:20 UTC10m

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-6975 page for operator, model, and routing details .

Mode-S 7809B2 frequently asked

What is Mode-S code 7809B2?
7809B2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6975.
Where is Mode-S 7809B2 registered?
Mode-S code 7809B2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7809B2 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 7809B2, octal 36004662, decimal 7,866,802.
What flights does 7809B2 operate?
Mode-S 7809B2 has broadcast 20 distinct callsigns, including CSN8738, CSN5400, CSN3614, CSN8758, CSN8677.