Apparatus

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sensors Mode-S transponder

7809FB

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-9917 · AIRBUS A-320

Hex
7809FB
Octal
36004773
Decimal
7,866,875
Country
CN
Tail
B-9917
Type
A320
No current signal · last broadcast 6h ago
Flights observed
120
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7809FB.

Country allocation

The ICAO 24-bit address 7809FB 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 China Southern Airlines 9 2026-05-18
CSN3315 China Southern Airlines 5 2026-05-29
CSN8819 China Southern Airlines 4 2026-05-22
CSN8697 China Southern Airlines 3 2026-05-26
CSN8576 China Southern Airlines 3 2026-05-09
CSN8491 China Southern Airlines 3 2026-05-20
CSN5755 China Southern Airlines 3 2026-05-10
CSN5399 China Southern Airlines 3 2026-05-14
CSN3827 China Southern Airlines 3 2026-05-19
CSN3797 China Southern Airlines 3 2026-05-27
CSN3210 China Southern Airlines 3 2026-05-02
CSN8737 China Southern Airlines 2 2026-05-14
CSN8698 China Southern Airlines 2 2026-05-26
CSN8611 China Southern Airlines 2 2026-05-17
CSN8575 China Southern Airlines 2 2026-05-09
CSN8492 China Southern Airlines 2 2026-04-22
CSN5537 - 2 2026-05-05
CSN5400 China Southern Airlines 2 2026-05-14
CSN3323 China Southern Airlines 2 2026-05-13
CSN3209 China Southern Airlines 2 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSN3315 - May 29, 22:45 UTCMay 29, 23:35 UTC50m
2026-05-29 CSN5458 WUH → SZX May 29, 15:55 UTCMay 29, 16:05 UTC10m
2026-05-29 CSN5457 SZX → WUH May 29, 08:20 UTCMay 29, 08:35 UTC15m
2026-05-28 CSN3190 PEK → SZX May 28, 14:45 UTCMay 28, 14:55 UTC10m
2026-05-28 CSN3189 SZX → PEK May 28, 07:40 UTCMay 28, 07:55 UTC15m
2026-05-27 CSN3315 - May 27, 22:35 UTCMay 27, 22:50 UTC15m
2026-05-27 CSN6923 SZX → KMG May 27, 10:45 UTCMay 27, 11:30 UTC45m
2026-05-27 CSN3798 HGH → SZX May 27, 08:30 UTCMay 27, 08:55 UTC25m
2026-05-27 CSN3797 SZX → HGH May 27, 03:54 UTCMay 27, 04:04 UTC10m
2026-05-26 CSN8577 SZX → WUH May 26, 13:19 UTCMay 26, 13:29 UTC10m
2026-05-26 CSN8698 SYX → SZX May 26, 10:39 UTCMay 26, 10:54 UTC15m
2026-05-26 CSN8697 SZX → DLU May 26, 07:05 UTCMay 26, 07:19 UTC15m
2026-05-26 CSN3316 - May 26, 04:50 UTCMay 26, 05:00 UTC10m
2026-05-25 CSN3315 - May 25, 22:44 UTCMay 25, 23:00 UTC15m
2026-05-25 CSN3956 HAK → SZX May 25, 16:15 UTCMay 25, 16:25 UTC10m
2026-05-25 CSN3955 SZX → HAK May 25, 13:05 UTCMay 25, 13:15 UTC10m
2026-05-25 CSN8495 SZX → XIY May 25, 04:45 UTCMay 25, 05:00 UTC15m
2026-05-25 CSN6254 HAK → SZX May 25, 03:10 UTCMay 25, 03:25 UTC15m
2026-05-24 CSN8676 JNG → SZX May 24, 16:05 UTCMay 24, 16:15 UTC10m
2026-05-24 CSN8675 SZX → JNG May 24, 10:40 UTCMay 24, 10:50 UTC10m
2026-05-23 CSN3171 SZX → PKX May 23, 23:45 UTCMay 23, 23:55 UTC10m
2026-05-23 CSN8712 HGH → SZX May 23, 07:15 UTCMay 23, 07:35 UTC20m
2026-05-23 CSN8711 SZX → HGH May 23, 02:30 UTCMay 23, 02:40 UTC10m
2026-05-22 CSN8819 SZX → KMG May 22, 07:25 UTCMay 22, 07:40 UTC15m
2026-05-22 CSN6921 SZX → HIA May 22, 00:30 UTCMay 22, 00:40 UTC10m
2026-05-21 CSN849X - May 21, 04:30 UTCMay 21, 04:40 UTC10m
2026-05-20 CSN8491 SZX → TSN May 20, 05:40 UTCMay 20, 05:50 UTC10m
2026-05-19 CSN3315 - May 19, 22:35 UTCMay 19, 22:55 UTC20m
2026-05-19 CSN3827 SZX → NKG May 19, 07:05 UTCMay 19, 07:15 UTC10m
2026-05-18 CSN3315 - May 18, 22:55 UTCMay 18, 23:10 UTC15m
2026-05-18 CSN8819 SZX → KMG May 18, 07:35 UTCMay 18, 07:45 UTC10m
2026-05-18 CSN5149 SZX → DLU May 18, 00:10 UTCMay 18, 00:25 UTC15m
2026-05-17 CSN8611 SZX → JHG May 17, 10:40 UTCMay 17, 10:55 UTC15m
2026-05-17 CSN3797 SZX → HGH May 17, 03:45 UTCMay 17, 04:00 UTC15m
2026-05-16 CSN8503 SZX → NGB May 16, 16:00 UTCMay 16, 16:10 UTC10m
2026-05-16 CSN3827 SZX → NKG May 16, 07:11 UTCMay 16, 07:20 UTC10m
2026-05-16 CSN5149 SZX → DLU May 16, 00:35 UTCMay 16, 00:45 UTC10m
2026-05-15 CSN5388 NAO → SZX May 15, 19:10 UTCMay 15, 19:25 UTC15m
2026-05-15 CSN5387 SZX → NAO May 15, 14:05 UTCMay 15, 14:20 UTC15m
2026-05-15 CSN3797 SZX → HGH May 15, 03:45 UTCMay 15, 04:05 UTC20m
2026-05-15 CSN8738 NGB → SZX May 15, 01:30 UTCMay 15, 01:40 UTC10m
2026-05-14 CSN8737 SZX → NGB May 14, 15:30 UTCMay 14, 15:40 UTC10m
2026-05-14 CSN5400 NKG → SZX May 14, 13:25 UTCMay 14, 13:50 UTC25m
2026-05-14 CSN5399 SZX → NKG May 14, 06:20 UTCMay 14, 06:35 UTC15m
2026-05-13 CSN3323 CAN → ZHA May 13, 22:50 UTCMay 13, 23:10 UTC20m
2026-05-13 CSN3634 HRB → SZX May 13, 14:20 UTCMay 13, 14:35 UTC15m
2026-05-13 CSN3633 SZX → HRB May 13, 04:15 UTCMay 13, 04:25 UTC10m
2026-05-12 CSN8283 SZX → HET May 12, 12:25 UTCMay 12, 12:35 UTC10m
2026-05-12 CSN6386 SHE → SZX May 12, 09:25 UTCMay 12, 09:40 UTC15m
2026-05-11 CSN8698 SYX → SZX May 11, 10:45 UTCMay 11, 11:00 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-9917 page for operator, model, and routing details .

Mode-S 7809FB frequently asked

What is Mode-S code 7809FB?
7809FB is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-9917.
Where is Mode-S 7809FB registered?
Mode-S code 7809FB is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7809FB 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 7809FB, octal 36004773, decimal 7,866,875.
What flights does 7809FB operate?
Mode-S 7809FB has broadcast 20 distinct callsigns, including CSN5149, CSN3315, CSN8819, CSN8697, CSN8576.