Apparatus

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sensors Mode-S transponder

7804C4

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6378 · AIRBUS A-321

Hex
7804C4
Octal
36002304
Decimal
7,865,540
Country
CN
Tail
B-6378
Type
A321
No current signal · last broadcast 1h ago
Flights observed
260
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 7804C4.

Country allocation

The ICAO 24-bit address 7804C4 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
CSN6969 - 6 2026-07-09
CSN6386 - 6 2026-06-21
CSN8697 - 5 2026-06-30
CSN8495 - 5 2026-07-11
CSN6621 China Southern Airlines 5 2026-07-22
CSN6970 - 4 2026-07-09
CSN6253 - 4 2026-06-14
CSN3578 China Southern Airlines 4 2026-06-03
CSN3562 China Southern Airlines 4 2026-07-19
CSN3351 - 4 2026-07-21
CSN8965 - 3 2026-06-28
CSN8819 China Southern Airlines 3 2026-07-21
CSN8797 - 3 2026-07-17
CSN8712 - 3 2026-06-20
CSN8711 - 3 2026-06-20
CSN8595 - 3 2026-07-10
CSN6480 - 3 2026-07-10
CSN6479 - 3 2026-06-24
CSN5820 China Southern Airlines 3 2026-07-23
CSN5819 China Southern Airlines 3 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CSN8575 SZX → HFE Jul 24, 09:45 UTCJul 24, 09:55 UTC10m
2026-07-24 CSN3570 HGH → SZX Jul 24, 07:00 UTCJul 24, 07:30 UTC30m
2026-07-24 CSN3569 SZX → HGH Jul 24, 02:45 UTCJul 24, 02:55 UTC10m
2026-07-23 CSN5820 TSN → SZX Jul 23, 09:25 UTCJul 23, 09:40 UTC15m
2026-07-23 CSN5819 SZX → TSN Jul 23, 01:50 UTCJul 23, 02:05 UTC15m
2026-07-22 CSN3434 CTU → SZX Jul 22, 16:05 UTCJul 22, 16:15 UTC10m
2026-07-22 CSN6621 SZX → XIY Jul 22, 02:10 UTCJul 22, 02:25 UTC15m
2026-07-21 CSN8503 - Jul 21, 14:45 UTCJul 21, 14:55 UTC10m
2026-07-21 CSN8820 KMG → SZX Jul 21, 13:20 UTCJul 21, 13:30 UTC10m
2026-07-21 CSN8819 SZX → KMG Jul 21, 08:10 UTCJul 21, 08:55 UTC45m
2026-07-21 CSN3352 - Jul 21, 06:10 UTCJul 21, 06:30 UTC20m
2026-07-21 CSN3351 - Jul 21, 00:30 UTCJul 21, 00:40 UTC10m
2026-07-20 CSN3433 - Jul 20, 10:10 UTCJul 20, 10:25 UTC15m
2026-07-20 CSN3622 TFU → SZX Jul 20, 07:30 UTCJul 20, 07:40 UTC10m
2026-07-20 CSN3621 SZX → TFU Jul 20, 01:50 UTCJul 20, 02:05 UTC15m
2026-07-19 CSN3562 SHA → SZX Jul 19, 17:05 UTCJul 19, 17:20 UTC15m
2026-07-19 CSN3562 SHA → SZX Jul 19, 07:20 UTCJul 19, 16:30 UTC9h 10m
2026-07-19 CSN3561 - Jul 19, 06:05 UTCJul 19, 06:15 UTC10m
2026-07-18 CSN3626 KHN → CAN Jul 18, 11:10 UTCJul 18, 12:05 UTC55m
2026-07-18 CSN3625 - Jul 18, 06:55 UTCJul 18, 07:05 UTC10m
2026-07-18 CSN6592 - Jul 18, 04:35 UTCJul 18, 04:45 UTC10m
2026-07-17 CSN6591 - Jul 17, 23:45 UTCJul 17, 23:55 UTC10m
2026-07-17 CSN5387 - Jul 17, 08:25 UTCJul 17, 08:40 UTC15m
2026-07-17 CSN8797 - Jul 17, 00:30 UTCJul 17, 00:40 UTC10m
2026-07-16 CSN6922 - Jul 16, 16:35 UTCJul 16, 17:05 UTC30m
2026-07-16 CSN6921 - Jul 16, 11:54 UTCJul 16, 12:09 UTC15m
2026-07-16 CSN3256 - Jul 16, 09:50 UTCJul 16, 10:29 UTC40m
2026-07-16 CSN3255 - Jul 16, 03:20 UTCJul 16, 03:30 UTC10m
2026-07-15 CSN6549 - Jul 15, 14:25 UTCJul 15, 14:35 UTC10m
2026-07-15 CSN3562 - Jul 15, 12:05 UTCJul 15, 13:00 UTC55m
2026-07-15 CSN3352 - Jul 15, 04:15 UTCJul 15, 04:30 UTC15m
2026-07-14 CSN3351 - Jul 14, 23:20 UTCJul 14, 23:30 UTC10m
2026-07-14 CSN6153 - Jul 14, 10:45 UTCJul 14, 15:40 UTC4h 55m
2026-07-14 CSN5820 - Jul 14, 08:35 UTCJul 14, 09:00 UTC25m
2026-07-14 CSN5819 - Jul 14, 01:50 UTCJul 14, 02:00 UTC10m
2026-07-13 CSN3167 - Jul 13, 06:25 UTCJul 13, 06:40 UTC15m
2026-07-13 CSN3156 - Jul 13, 04:35 UTCJul 13, 05:01 UTC25m
2026-07-12 CSN3155 - Jul 12, 13:40 UTCJul 12, 14:01 UTC20m
2026-07-12 CSN3552 - Jul 12, 06:20 UTCJul 12, 12:05 UTC5h 45m
2026-07-12 CSN3551 - Jul 12, 05:05 UTCJul 12, 05:15 UTC10m
2026-07-12 CSN5846 - Jul 12, 02:01 UTCJul 12, 02:15 UTC15m
2026-07-11 CSN5845 - Jul 11, 12:35 UTCJul 11, 12:55 UTC20m
2026-07-11 CSN8496 - Jul 11, 10:40 UTCJul 11, 10:50 UTC10m
2026-07-11 CSN8495 - Jul 11, 04:30 UTCJul 11, 04:50 UTC20m
2026-07-11 CSN8596 - Jul 11, 00:00 UTCJul 11, 00:15 UTC15m
2026-07-10 CSN8595 - Jul 10, 14:05 UTCJul 10, 14:15 UTC10m
2026-07-10 CSN6480 - Jul 10, 12:00 UTCJul 10, 12:40 UTC40m
2026-07-10 CSN3352 - Jul 10, 05:10 UTCJul 10, 05:30 UTC20m
2026-07-09 CSN3351 - Jul 9, 23:20 UTCJul 9, 23:30 UTC10m
2026-07-09 CSN6970 - Jul 9, 17:15 UTCJul 9, 17:25 UTC10m

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-6378 page for operator, model, and routing details .

Mode-S 7804C4 frequently asked

What is Mode-S code 7804C4?
7804C4 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6378.
Where is Mode-S 7804C4 registered?
Mode-S code 7804C4 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7804C4 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7804C4, octal 36002304, decimal 7,865,540.
What flights does 7804C4 operate?
Mode-S 7804C4 has broadcast 20 distinct callsigns, including CSN6969, CSN6386, CSN8697, CSN8495, CSN6621.