Apparatus

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sensors Mode-S transponder

7800C2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6657 · AIRBUS A-321

Hex
7800C2
Octal
36000302
Decimal
7,864,514
Country
CN
Tail
B-6657
Type
A321
No current signal · last broadcast 5h ago
Flights observed
131
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 7800C2.

Country allocation

The ICAO 24-bit address 7800C2 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
CSN8466 China Southern Airlines 7 2026-05-20
CSN8465 China Southern Airlines 6 2026-05-20
CSN3191 China Southern Airlines 5 2026-05-28
CSN3151 China Southern Airlines 5 2026-05-28
CSN8323 China Southern Airlines 3 2026-04-16
CSN8283 China Southern Airlines 3 2026-05-25
CSN8083 China Southern Airlines 3 2026-05-26
CSN8076 China Southern Airlines 3 2026-05-03
CSN8075 China Southern Airlines 3 2026-05-03
CSN3192 China Southern Airlines 3 2026-05-29
CSN3188 China Southern Airlines 3 2026-05-27
CSN3155 China Southern Airlines 3 2026-05-30
CSN3152 China Southern Airlines 3 2026-05-24
CSN8965 - 2 2026-05-12
CSN8504 China Southern Airlines 2 2026-05-05
CSN8503 China Southern Airlines 2 2026-05-04
CSN8158 China Southern Airlines 2 2026-04-26
CSN8157 China Southern Airlines 2 2026-04-26
CSN6752 China Southern Airlines 2 2026-05-17
CSN6552 China Southern Airlines 2 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN3155 SZX → PEK May 30, 11:40 UTCMay 30, 11:55 UTC15m
2026-05-30 CSN6386 SHE → SZX May 30, 09:20 UTCMay 30, 09:45 UTC25m
2026-05-30 CSN6386 SHE → SZX May 30, 07:05 UTCMay 30, 07:15 UTC10m
2026-05-30 CSN6385 SZX → SHE May 30, 01:20 UTCMay 30, 01:35 UTC15m
2026-05-29 CSN3174 PKX → SZX May 29, 15:25 UTCMay 29, 15:35 UTC10m
2026-05-29 CSN3153 SZX → PEK May 29, 06:55 UTCMay 29, 07:10 UTC15m
2026-05-29 CSN3192 PEK → SZX May 29, 04:40 UTCMay 29, 05:00 UTC20m
2026-05-28 CSN3191 SZX → PEK May 28, 09:40 UTCMay 28, 10:00 UTC20m
2026-05-28 CSN3151 SZX → PEK May 28, 00:45 UTCMay 28, 01:00 UTC15m
2026-05-27 CSN3188 PKX → SZX May 27, 11:55 UTCMay 27, 12:05 UTC10m
2026-05-26 CSN3155 SZX → PEK May 26, 11:50 UTCMay 26, 12:05 UTC15m
2026-05-26 CSN8083 SZX → HAN May 26, 04:54 UTCMay 26, 05:10 UTC15m
2026-05-26 CSN8284 HET → SZX May 26, 02:00 UTCMay 26, 02:24 UTC25m
2026-05-25 CSN8283 SZX → HET May 25, 13:35 UTCMay 25, 13:50 UTC15m
2026-05-25 CSN8083 SZX → HAN May 25, 04:50 UTCMay 25, 05:05 UTC15m
2026-05-25 CSN6444 HAK → SZX May 25, 02:25 UTCMay 25, 02:40 UTC15m
2026-05-24 CSN6443 SZX → HAK May 24, 23:00 UTCMay 24, 23:15 UTC15m
2026-05-24 CSN8498 NGB → SZX May 24, 15:25 UTCMay 24, 15:50 UTC25m
2026-05-24 CSN8497 SZX → NGB May 24, 11:15 UTCMay 24, 11:25 UTC10m
2026-05-24 CSN3152 PEK → SZX May 24, 09:10 UTCMay 24, 09:30 UTC20m
2026-05-24 CSN3151 SZX → PEK May 24, 01:00 UTCMay 24, 01:10 UTC10m
2026-05-20 CSN3236 CAN → KWL May 20, 19:25 UTCMay 20, 19:40 UTC15m
2026-05-20 CSN8466 SGN → SZX May 20, 09:50 UTCMay 20, 10:15 UTC25m
2026-05-20 CSN8465 SZX → SGN May 20, 04:05 UTCMay 20, 04:15 UTC10m
2026-05-20 CSN3366 HGH → SZX May 20, 01:50 UTCMay 20, 02:15 UTC25m
2026-05-19 CSN3365 SZX → HGH May 19, 13:20 UTCMay 19, 13:30 UTC10m
2026-05-19 CSN8465 SZX → SGN May 19, 03:45 UTCMay 19, 03:55 UTC10m
2026-05-18 CSN6969 SZX → NAO May 18, 00:25 UTCMay 18, 00:40 UTC15m
2026-05-17 CSN6752 PVG → SZX May 17, 13:05 UTCMay 17, 13:15 UTC10m
2026-05-17 CSN6752 PVG → SZX May 17, 08:50 UTCMay 17, 12:30 UTC3h 40m
2026-05-17 CSN3192 PEK → SZX May 17, 04:40 UTCMay 17, 05:00 UTC20m
2026-05-16 CSN3191 SZX → PEK May 16, 11:11 UTCMay 16, 11:21 UTC10m
2026-05-16 CSN3152 PEK → SZX May 16, 09:25 UTCMay 16, 09:40 UTC15m
2026-05-16 CSN3151 SZX → PEK May 16, 00:40 UTCMay 16, 00:55 UTC15m
2026-05-15 CSN5842 XIY → SZX May 15, 15:30 UTCMay 15, 15:40 UTC10m
2026-05-15 CSN5841 SZX → XIY May 15, 07:55 UTCMay 15, 08:15 UTC20m
2026-05-15 CSN6921 SZX → HIA May 15, 00:20 UTCMay 15, 00:30 UTC10m
2026-05-14 CSN8598 HGH → SZX May 14, 13:10 UTCMay 14, 13:30 UTC20m
2026-05-13 CSN8283 SZX → HET May 13, 12:35 UTCMay 13, 12:50 UTC15m
2026-05-13 CSN8466 SGN → SZX May 13, 09:50 UTCMay 13, 10:00 UTC10m
2026-05-13 CSN8465 SZX → SGN May 13, 03:55 UTCMay 13, 04:05 UTC10m
2026-05-12 CSN8577 SZX → WUH May 12, 13:15 UTCMay 12, 13:30 UTC15m
2026-05-12 CSN8965 - May 12, 04:55 UTCMay 12, 05:10 UTC15m
2026-05-11 CSN3558 SHA → SZX May 11, 12:35 UTCMay 11, 13:05 UTC30m
2026-05-11 CSN3557 SZX → PVG May 11, 07:15 UTCMay 11, 07:25 UTC10m
2026-05-11 CSN5862 CTU → SZX May 11, 04:40 UTCMay 11, 04:50 UTC10m
2026-05-10 CSN5861 SZX → CTU May 10, 23:19 UTCMay 10, 23:39 UTC20m
2026-05-10 CSN3452 KMG → SZX May 10, 11:25 UTCMay 10, 11:35 UTC10m
2026-05-10 CSN3451 SZX → KMG May 10, 06:04 UTCMay 10, 06:25 UTC20m
2026-05-09 CSN5861 SZX → CTU May 9, 23:20 UTCMay 9, 23:35 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-6657 page for operator, model, and routing details .

Mode-S 7800C2 frequently asked

What is Mode-S code 7800C2?
7800C2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6657.
Where is Mode-S 7800C2 registered?
Mode-S code 7800C2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7800C2 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7800C2, octal 36000302, decimal 7,864,514.
What flights does 7800C2 operate?
Mode-S 7800C2 has broadcast 20 distinct callsigns, including CSN8466, CSN8465, CSN3191, CSN3151, CSN8323.