Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7809B1

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6976 · AIRBUS A-320

Hex
7809B1
Octal
36004661
Decimal
7,866,801
Country
CN
Tail
B-6976
Type
A320
No current signal · last broadcast Jul 25, 09:00 UTC
Flights observed
362
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 09:00 UTC

Last known position

Most recent position reported by Mode-S 7809B1.

Country allocation

The ICAO 24-bit address 7809B1 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
CSN5149 - 14 2026-07-12
CSN5150 - 12 2026-07-12
CSN8611 - 9 2026-06-26
CSN8675 - 8 2026-06-17
CSN8612 China Southern Airlines 8 2026-06-26
CSN8819 China Southern Airlines 6 2026-07-19
CSN8676 - 6 2026-06-17
CSN8158 China Southern Airlines 6 2026-07-23
CSN3451 - 6 2026-07-07
CSN8478 - 5 2026-07-08
CSN8477 - 5 2026-07-08
CSN6969 China Southern Airlines 5 2026-07-24
CSN3323 China Southern Airlines 5 2026-05-15
CSN8820 China Southern Airlines 4 2026-07-19
CSN6756 China Southern Airlines 4 2026-05-15
CSN6481 - 4 2026-06-25
CSN5755 China Southern Airlines 4 2026-07-20
CSN5457 - 4 2026-06-30
CSN5400 China Southern Airlines 4 2026-05-24
CSN3452 China Southern Airlines 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CSN6752 PVG → SZX Jul 25, 07:20 UTCJul 25, 09:00 UTC1h 40m
2026-07-25 CSN6751 SZX → PVG Jul 25, 02:00 UTCJul 25, 02:10 UTC10m
2026-07-24 CSN3174 PKX → SZX Jul 24, 13:50 UTCJul 24, 14:10 UTC20m
2026-07-24 CSN3174 PKX → SZX Jul 24, 11:25 UTCJul 24, 12:00 UTC35m
2026-07-24 CSN3153 SZX → PEK Jul 24, 09:00 UTCJul 24, 09:35 UTC35m
2026-07-24 CSN3153 SZX → PEK Jul 24, 07:10 UTCJul 24, 07:20 UTC10m
2026-07-24 CSN6970 NAO → SZX Jul 24, 05:35 UTCJul 24, 05:45 UTC10m
2026-07-24 CSN6969 SZX → NAO Jul 24, 01:00 UTCJul 24, 01:20 UTC20m
2026-07-23 CSN8158 BKK → SZX Jul 23, 22:00 UTCJul 23, 22:55 UTC55m
2026-07-23 CSN8158 BKK → SZX Jul 23, 20:30 UTCJul 23, 21:00 UTC30m
2026-07-23 CSN8157 SZX → BKK Jul 23, 15:55 UTCJul 23, 18:15 UTC2h 20m
2026-07-23 CSN8470 HAN → SZX Jul 23, 10:20 UTCJul 23, 10:45 UTC25m
2026-07-23 CSN8469 SZX → HAN Jul 23, 06:50 UTCJul 23, 08:20 UTC1h 30m
2026-07-22 CSN5537 - Jul 22, 23:20 UTCJul 22, 23:30 UTC10m
2026-07-22 CSN3272 CGO → SZX Jul 22, 14:10 UTCJul 22, 14:35 UTC25m
2026-07-21 CSN8158 BKK → SZX Jul 21, 22:50 UTCJul 21, 23:10 UTC20m
2026-07-21 CSN8158 BKK → SZX Jul 21, 20:45 UTCJul 21, 21:20 UTC35m
2026-07-21 CSN8157 SZX → BKK Jul 21, 17:20 UTCJul 21, 19:35 UTC2h 15m
2026-07-21 CSN3626 KHN → CAN Jul 21, 08:20 UTCJul 21, 15:40 UTC7h 20m
2026-07-21 CSN6592 - Jul 21, 00:25 UTCJul 21, 05:05 UTC4h 40m
2026-07-20 CSN6591 SZX → NGB Jul 20, 23:40 UTCJul 20, 23:55 UTC15m
2026-07-20 CSN5756 - Jul 20, 15:30 UTCJul 20, 15:50 UTC20m
2026-07-20 CSN5755 SZX → AKA Jul 20, 10:30 UTCJul 20, 10:45 UTC15m
2026-07-20 CSN6621 SZX → XIY Jul 20, 02:15 UTCJul 20, 02:30 UTC15m
2026-07-20 CSN8504 NGB → SZX Jul 20, 00:00 UTCJul 20, 00:25 UTC25m
2026-07-19 CSN8820 KMG → SZX Jul 19, 12:50 UTCJul 19, 13:00 UTC10m
2026-07-19 CSN8819 SZX → KMG Jul 19, 08:10 UTCJul 19, 08:20 UTC10m
2026-07-19 CSN8819 SZX → KMG Jul 19, 07:20 UTCJul 19, 07:35 UTC15m
2026-07-19 CSN6970 NAO → SZX Jul 19, 05:10 UTCJul 19, 05:20 UTC10m
2026-07-19 CSN6969 - Jul 19, 00:50 UTCJul 19, 01:05 UTC15m
2026-07-18 CSN8165 - Jul 18, 09:05 UTCJul 18, 09:20 UTC15m
2026-07-18 CSN8993 - Jul 18, 01:50 UTCJul 18, 02:00 UTC10m
2026-07-17 CSN8158 - Jul 17, 22:29 UTCJul 17, 22:49 UTC20m
2026-07-17 CSN8158 - Jul 17, 20:20 UTCJul 17, 20:40 UTC20m
2026-07-17 CSN8157 SZX → BKK Jul 17, 16:04 UTCJul 17, 16:19 UTC15m
2026-07-17 CSN3370 - Jul 17, 13:10 UTCJul 17, 13:40 UTC30m
2026-07-17 CSN3369 - Jul 17, 04:20 UTCJul 17, 11:00 UTC6h 40m
2026-07-16 CSN8598 - Jul 16, 11:10 UTCJul 16, 12:00 UTC50m
2026-07-16 CSN8597 - Jul 16, 07:20 UTCJul 16, 07:30 UTC10m
2026-07-16 CSN5538 - Jul 16, 05:10 UTCJul 16, 05:25 UTC15m
2026-07-15 CSN5537 - Jul 15, 23:35 UTCJul 15, 23:55 UTC20m
2026-07-15 CSN3210 - Jul 15, 14:35 UTCJul 15, 15:25 UTC50m
2026-07-15 CSN3209 - Jul 15, 10:15 UTCJul 15, 10:25 UTC10m
2026-07-15 CSN8712 - Jul 15, 07:15 UTCJul 15, 08:05 UTC50m
2026-07-15 CSN8711 - Jul 15, 03:05 UTCJul 15, 03:15 UTC10m
2026-07-15 CSN8504 - Jul 15, 00:05 UTCJul 15, 00:25 UTC20m
2026-07-14 CSN8503 - Jul 14, 14:25 UTCJul 14, 14:35 UTC10m
2026-07-14 CSN8820 - Jul 14, 12:35 UTCJul 14, 12:45 UTC10m
2026-07-14 CSN8819 - Jul 14, 07:50 UTCJul 14, 08:05 UTC15m
2026-07-14 CSN8703 - Jul 14, 00:50 UTCJul 14, 01:05 UTC15m

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-6976 page for operator, model, and routing details .

Mode-S 7809B1 frequently asked

What is Mode-S code 7809B1?
7809B1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6976.
Where is Mode-S 7809B1 registered?
Mode-S code 7809B1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7809B1 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 09:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7809B1, octal 36004661, decimal 7,866,801.
What flights does 7809B1 operate?
Mode-S 7809B1 has broadcast 20 distinct callsigns, including CSN5149, CSN5150, CSN8611, CSN8675, CSN8612.