Apparatus

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sensors Mode-S transponder

7809B0

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6977 · AIRBUS A-320

Hex
7809B0
Octal
36004660
Decimal
7,866,800
Country
CN
Tail
B-6977
Type
A320
No current signal · last broadcast 1d ago
Flights observed
64
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7809B0.

Country allocation

The ICAO 24-bit address 7809B0 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
CSN6638 - 11 2026-07-15
CSN6144 China Southern Airlines 11 2026-07-17
CSN6150 - 7 2026-07-08
CSN8930 - 4 2026-07-14
CSN8871 - 4 2026-07-08
CSN8996 China Southern Airlines 2 2026-06-27
CSN8995 China Southern Airlines 2 2026-06-26
CSN8872 - 2 2026-07-08
CSN6149 - 2 2026-07-01
CSN6143 - 2 2026-07-10
CSN8929 China Southern Airlines 1 2026-06-13
CSN8816 China Southern Airlines 1 2026-06-12
CSN8815 China Southern Airlines 1 2026-05-26
CSN8803 China Southern Airlines 1 2026-06-03
CSN6658 - 1 2026-07-11
CSN6657 - 1 2026-07-10
CSN6637 China Southern Airlines 1 2026-06-23
CSN6366 China Southern Airlines 1 2026-06-07
CSN6208 - 1 2026-07-11
CSN5579 - 1 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSN6144 PKX → CGQ Jul 17, 23:55 UTCJul 18, 00:04 UTC10m
2026-07-15 CSN6638 - Jul 15, 10:55 UTCJul 15, 11:05 UTC10m
2026-07-14 CSN6144 - Jul 14, 23:55 UTCJul 15, 00:10 UTC15m
2026-07-14 CSN8930 - Jul 14, 04:45 UTCJul 14, 04:55 UTC10m
2026-07-11 CSN6208 - Jul 11, 13:10 UTCJul 11, 18:40 UTC5h 30m
2026-07-11 CSN6658 - Jul 11, 09:30 UTCJul 11, 09:45 UTC15m
2026-07-10 CSN6657 - Jul 10, 23:45 UTCJul 10, 23:55 UTC10m
2026-07-10 CSN6638 - Jul 10, 10:25 UTCJul 10, 11:00 UTC35m
2026-07-10 CSN6143 - Jul 10, 03:35 UTCJul 10, 03:45 UTC10m
2026-07-09 CSN6144 - Jul 9, 23:50 UTCJul 10, 00:05 UTC15m
2026-07-08 CSN8872 - Jul 8, 15:05 UTCJul 8, 15:15 UTC10m
2026-07-08 CSN8871 - Jul 8, 11:10 UTCJul 8, 11:25 UTC15m
2026-07-08 CSN6150 - Jul 8, 05:05 UTCJul 8, 05:20 UTC15m
2026-07-07 CSN5579 - Jul 7, 15:00 UTCJul 7, 15:15 UTC15m
2026-07-07 CSN6638 - Jul 7, 10:35 UTCJul 7, 10:50 UTC15m
2026-07-06 CSN6144 - Jul 6, 23:50 UTCJul 7, 00:00 UTC10m
2026-07-03 CSN6638 - Jul 3, 10:30 UTCJul 3, 10:40 UTC10m
2026-07-02 CSN6144 - Jul 2, 23:55 UTCJul 3, 00:05 UTC10m
2026-07-01 CSN8871 - Jul 1, 11:10 UTCJul 1, 11:25 UTC15m
2026-07-01 CSN6149 - Jul 1, 09:00 UTCJul 1, 09:10 UTC10m
2026-07-01 CSN6150 - Jul 1, 05:00 UTCJul 1, 05:10 UTC10m
2026-06-30 CSN6638 - Jun 30, 11:00 UTCJun 30, 11:15 UTC15m
2026-06-29 CSN6638 - Jun 29, 10:29 UTCJun 29, 10:44 UTC15m
2026-06-28 CSN6638 - Jun 28, 10:35 UTCJun 28, 10:50 UTC15m
2026-06-27 CSN6144 - Jun 27, 23:50 UTCJun 28, 00:04 UTC15m
2026-06-27 CSN8996 AAT → PKX Jun 27, 07:24 UTCJun 27, 07:34 UTC10m
2026-06-26 CSN8995 PKX → AAT Jun 26, 23:19 UTCJun 26, 23:39 UTC20m
2026-06-25 CSN6638 - Jun 25, 10:25 UTCJun 25, 10:39 UTC15m
2026-06-24 CSN6144 - Jun 24, 23:45 UTCJun 24, 23:54 UTC10m
2026-06-23 CSN6637 PKX → HAK Jun 23, 06:04 UTCJun 23, 06:15 UTC10m
2026-06-22 CSN6144 - Jun 22, 23:55 UTCJun 23, 00:04 UTC10m
2026-06-13 CSN8930 LHW → PKX Jun 13, 04:55 UTCJun 13, 05:05 UTC10m
2026-06-13 CSN8929 PKX → LHW Jun 13, 00:15 UTCJun 13, 00:30 UTC15m
2026-06-12 CSN8816 CKG → PKX Jun 12, 11:15 UTCJun 12, 11:30 UTC15m
2026-06-10 CSN8996 AAT → PKX Jun 10, 07:25 UTCJun 10, 07:35 UTC10m
2026-06-09 CSN8995 PKX → AAT Jun 9, 23:20 UTCJun 9, 23:40 UTC20m
2026-06-09 CSN8930 LHW → PKX Jun 9, 04:45 UTCJun 9, 05:00 UTC15m
2026-06-08 CSN3904 CTU → PKX Jun 8, 13:20 UTCJun 8, 13:35 UTC15m
2026-06-08 CSN8930 LHW → PKX Jun 8, 04:40 UTCJun 8, 04:55 UTC15m
2026-06-07 CSN6366 PKX → HAK Jun 7, 03:15 UTCJun 7, 03:25 UTC10m
2026-06-05 CSN6638 HAK → PKX Jun 5, 10:30 UTCJun 5, 10:45 UTC15m
2026-06-04 CSN6144 PKX → CGQ Jun 4, 23:50 UTCJun 5, 00:05 UTC15m
2026-06-04 CSN6149 CGQ → PKX Jun 4, 08:45 UTCJun 4, 08:55 UTC10m
2026-06-04 CSN6150 PKX → CGQ Jun 4, 05:05 UTCJun 4, 05:15 UTC10m
2026-06-03 CSN8803 PKX → SHA Jun 3, 12:35 UTCJun 3, 12:50 UTC15m
2026-06-03 CSN6150 PKX → CGQ Jun 3, 05:00 UTCJun 3, 05:15 UTC15m
2026-05-30 CSN8872 DQA → PKX May 30, 15:00 UTCMay 30, 15:10 UTC10m
2026-05-30 CSN8871 PKX → DQA May 30, 11:15 UTCMay 30, 11:25 UTC10m
2026-05-29 CSN6638 HAK → PKX May 29, 10:20 UTCMay 29, 10:30 UTC10m
2026-05-28 CSN6144 PKX → CGQ May 28, 23:50 UTCMay 29, 00:05 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-6977 page for operator, model, and routing details .

Mode-S 7809B0 frequently asked

What is Mode-S code 7809B0?
7809B0 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6977.
Where is Mode-S 7809B0 registered?
Mode-S code 7809B0 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7809B0 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7809B0, octal 36004660, decimal 7,866,800.
What flights does 7809B0 operate?
Mode-S 7809B0 has broadcast 20 distinct callsigns, including CSN6638, CSN6144, CSN6150, CSN8930, CSN8871.