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 9h ago
Flights observed
305
Distinct callsigns
20
Country
CN
Last broadcast
9h 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
CSN6233 - 6 2026-06-28
CSN5149 - 6 2026-06-17
CSN8738 - 5 2026-07-03
CSN8470 - 5 2026-06-22
CSN5853 China Southern Airlines 5 2026-06-12
CSN8698 - 4 2026-06-27
CSN8697 - 4 2026-06-27
CSN8677 China Southern Airlines 4 2026-06-03
CSN8676 - 4 2026-07-10
CSN8675 - 4 2026-07-10
CSN8611 China Southern Airlines 4 2026-06-12
CSN8575 China Southern Airlines 4 2026-06-04
CSN8554 - 4 2026-07-01
CSN8492 - 4 2026-06-25
CSN8491 - 4 2026-06-25
CSN8469 - 4 2026-06-22
CSN5854 China Southern Airlines 4 2026-06-06
CSN5756 - 4 2026-07-01
CSN5400 China Southern Airlines 4 2026-05-28
CSN5399 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN3210 - Jul 14, 13:05 UTCJul 14, 13:45 UTC40m
2026-07-14 CSN3209 - Jul 14, 08:55 UTCJul 14, 09:05 UTC10m
2026-07-14 CSN3460 - Jul 14, 07:25 UTCJul 14, 07:35 UTC10m
2026-07-14 CSN3459 - Jul 14, 02:05 UTCJul 14, 02:20 UTC15m
2026-07-13 CSN3964 - Jul 13, 15:20 UTCJul 13, 16:25 UTC1h 5m
2026-07-13 CSN3963 - Jul 13, 09:35 UTCJul 13, 09:55 UTC20m
2026-07-13 CSN3176 - Jul 13, 06:30 UTCJul 13, 06:55 UTC25m
2026-07-12 CSN3171 - Jul 12, 23:45 UTCJul 13, 00:01 UTC15m
2026-07-12 CSN8424 - Jul 12, 14:50 UTCJul 12, 15:01 UTC10m
2026-07-12 CSN8423 - Jul 12, 07:35 UTCJul 12, 07:50 UTC15m
2026-07-12 CSN3566 - Jul 12, 05:40 UTCJul 12, 06:01 UTC20m
2026-07-12 CSN3565 - Jul 12, 01:15 UTCJul 12, 01:25 UTC10m
2026-07-11 CSN5538 - Jul 11, 13:00 UTCJul 11, 13:25 UTC25m
2026-07-11 CSN5537 - Jul 11, 07:30 UTCJul 11, 07:40 UTC10m
2026-07-11 CSN8704 - Jul 11, 06:10 UTCJul 11, 06:20 UTC10m
2026-07-11 CSN8704 - Jul 11, 04:15 UTCJul 11, 04:25 UTC10m
2026-07-11 CSN8703 - Jul 11, 00:50 UTCJul 11, 01:00 UTC10m
2026-07-10 CSN8676 - Jul 10, 16:10 UTCJul 10, 16:30 UTC20m
2026-07-10 CSN8675 - Jul 10, 10:10 UTCJul 10, 10:25 UTC15m
2026-07-10 CSN6621 - Jul 10, 02:35 UTCJul 10, 02:45 UTC10m
2026-07-09 CSN8676 - Jul 9, 18:40 UTCJul 9, 18:55 UTC15m
2026-07-09 CSN8675 - Jul 9, 13:20 UTCJul 9, 13:35 UTC15m
2026-07-09 CSN3256 - Jul 9, 04:55 UTCJul 9, 11:50 UTC6h 55m
2026-07-09 CSN3255 - Jul 9, 03:35 UTCJul 9, 03:45 UTC10m
2026-07-09 CSN6550 - Jul 9, 01:40 UTCJul 9, 01:55 UTC15m
2026-07-08 CSN6549 - Jul 8, 14:30 UTCJul 8, 14:45 UTC15m
2026-07-08 CSN3626 - Jul 8, 12:10 UTCJul 8, 13:15 UTC1h 5m
2026-07-08 CSN3625 - Jul 8, 07:30 UTCJul 8, 07:40 UTC10m
2026-07-07 CSN5157 - Jul 7, 23:20 UTCJul 7, 23:35 UTC15m
2026-07-07 CSN3210 - Jul 7, 21:25 UTCJul 7, 21:35 UTC10m
2026-07-07 CSN3210 - Jul 7, 20:30 UTCJul 7, 20:45 UTC15m
2026-07-07 CSN3209 - Jul 7, 16:15 UTCJul 7, 16:25 UTC10m
2026-07-07 CSN8581 - Jul 7, 04:05 UTCJul 7, 04:25 UTC20m
2026-07-06 CSN3235 - Jul 6, 15:25 UTCJul 6, 21:30 UTC6h 5m
2026-07-06 CSN8598 - Jul 6, 12:40 UTCJul 6, 13:25 UTC45m
2026-07-06 CSN8597 - Jul 6, 05:15 UTCJul 6, 05:25 UTC10m
2026-07-06 CSN8578 - Jul 6, 02:50 UTCJul 6, 03:15 UTC25m
2026-07-05 CSN8577 - Jul 5, 14:55 UTCJul 5, 15:10 UTC15m
2026-07-05 CSN8598 - Jul 5, 11:45 UTCJul 5, 12:00 UTC15m
2026-07-05 CSN8597 - Jul 5, 06:25 UTCJul 5, 06:40 UTC15m
2026-07-04 CSN5439 SZX → NAO Jul 4, 23:10 UTCJul 4, 23:35 UTC25m
2026-07-04 CSN8676 - Jul 4, 20:25 UTCJul 4, 20:50 UTC25m
2026-07-04 CSN8675 - Jul 4, 11:15 UTCJul 4, 11:30 UTC15m
2026-07-04 CSN6622 - Jul 4, 09:05 UTCJul 4, 09:15 UTC10m
2026-07-04 CSN6621 - Jul 4, 02:30 UTCJul 4, 02:45 UTC15m
2026-07-03 CSN3236 - Jul 3, 18:20 UTCJul 3, 18:35 UTC15m
2026-07-03 CSN3235 - Jul 3, 14:15 UTCJul 3, 14:30 UTC15m
2026-07-03 CSN3584 - Jul 3, 11:40 UTCJul 3, 12:05 UTC25m
2026-07-03 CSN3583 - Jul 3, 03:20 UTCJul 3, 03:30 UTC10m
2026-07-03 CSN8738 - Jul 3, 01:05 UTCJul 3, 01:25 UTC20m

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 9h 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 CSN6233, CSN5149, CSN8738, CSN8470, CSN5853.