Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

780C3F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1831 · AIRBUS A-321

Hex
780C3F
Octal
36006077
Decimal
7,867,455
Country
CN
Tail
B-1831
Type
A321
No current signal · last broadcast 15h ago
Flights observed
106
Distinct callsigns
20
Country
CN
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 780C3F.

Country allocation

The ICAO 24-bit address 780C3F 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
CSN3560 - 7 2026-07-08
CSN3559 - 6 2026-07-08
CSN8099 - 5 2026-07-14
CSN5841 China Southern Airlines 5 2026-06-13
CSN8712 China Southern Airlines 3 2026-06-05
CSN8711 China Southern Airlines 3 2026-06-14
CSN8100 - 3 2026-07-14
CSN6358 China Southern Airlines 3 2026-05-22
CSN5624 China Southern Airlines 3 2026-04-30
CSN8819 China Southern Airlines 2 2026-06-08
CSN8798 - 2 2026-07-09
CSN8797 - 2 2026-07-09
CSN8323 - 2 2026-07-06
CSN8075 - 2 2026-07-07
CSN6547 - 2 2026-07-09
CSN6357 China Southern Airlines 2 2026-05-23
CSN5842 China Southern Airlines 2 2026-05-20
CSN3864 China Southern Airlines 2 2026-06-14
CSN3584 China Southern Airlines 2 2026-06-09
CSN3583 China Southern Airlines 2 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN8100 - Jul 14, 06:55 UTCJul 14, 07:10 UTC15m
2026-07-14 CSN8099 - Jul 14, 05:05 UTCJul 14, 05:15 UTC10m
2026-07-14 CSN8099 - Jul 14, 03:05 UTCJul 14, 03:15 UTC10m
2026-07-14 CSN3994 - Jul 14, 01:05 UTCJul 14, 01:15 UTC10m
2026-07-11 CSN8178 - Jul 11, 12:55 UTCJul 11, 13:15 UTC20m
2026-07-11 CSN8177 - Jul 11, 09:55 UTCJul 11, 11:05 UTC1h 10m
2026-07-10 CSN3878 - Jul 10, 11:15 UTCJul 10, 11:25 UTC10m
2026-07-09 CSN6547 - Jul 9, 10:40 UTCJul 9, 10:55 UTC15m
2026-07-09 CSN8798 - Jul 9, 07:50 UTCJul 9, 08:00 UTC10m
2026-07-09 CSN8797 - Jul 9, 00:05 UTCJul 9, 00:15 UTC10m
2026-07-08 CSN3956 - Jul 8, 17:10 UTCJul 8, 17:35 UTC25m
2026-07-08 CSN3955 - Jul 8, 14:10 UTCJul 8, 14:25 UTC15m
2026-07-08 CSN3560 - Jul 8, 09:30 UTCJul 8, 09:45 UTC15m
2026-07-08 CSN3559 - Jul 8, 00:30 UTCJul 8, 00:40 UTC10m
2026-07-07 CSN8076 - Jul 7, 10:15 UTCJul 7, 11:40 UTC1h 25m
2026-07-07 CSN8075 - Jul 7, 07:15 UTCJul 7, 08:50 UTC1h 35m
2026-07-07 CSN8075 - Jul 7, 06:30 UTCJul 7, 06:40 UTC10m
2026-07-06 CSN8324 - Jul 6, 12:15 UTCJul 6, 13:10 UTC55m
2026-07-06 CSN8323 - Jul 6, 09:55 UTCJul 6, 10:50 UTC55m
2026-07-06 CSN8323 - Jul 6, 08:25 UTCJul 6, 08:40 UTC15m
2026-07-06 CSN5861 - Jul 6, 00:10 UTCJul 6, 00:25 UTC15m
2026-07-05 CSN3670 - Jul 5, 18:15 UTCJul 5, 18:30 UTC15m
2026-07-05 CSN3669 - Jul 5, 13:00 UTCJul 5, 13:10 UTC10m
2026-07-05 CSN3798 - Jul 5, 08:35 UTCJul 5, 08:55 UTC20m
2026-07-03 CSN8100 - Jul 3, 07:15 UTCJul 3, 13:00 UTC5h 45m
2026-07-03 CSN8099 - Jul 3, 03:55 UTCJul 3, 05:25 UTC1h 30m
2026-07-02 CSN6568 - Jul 2, 11:05 UTCJul 2, 11:15 UTC10m
2026-07-01 CSN3234 - Jul 1, 16:35 UTCJul 1, 16:45 UTC10m
2026-07-01 CSN8100 - Jul 1, 06:55 UTCJul 1, 08:20 UTC1h 25m
2026-07-01 CSN8099 - Jul 1, 05:05 UTCJul 1, 05:15 UTC10m
2026-07-01 CSN8099 - Jul 1, 03:10 UTCJul 1, 04:00 UTC50m
2026-06-27 CSN3493 - Jun 27, 02:20 UTCJun 27, 03:09 UTC50m
2026-06-25 CSN6373 - Jun 25, 05:25 UTCJun 25, 13:09 UTC7h 45m
2026-06-23 CSN6738 - Jun 23, 11:40 UTCJun 23, 11:54 UTC15m
2026-06-14 CSN3864 HGH → CAN Jun 14, 10:10 UTCJun 14, 10:25 UTC15m
2026-06-14 CSN8711 SZX → HGH Jun 14, 02:30 UTCJun 14, 02:40 UTC10m
2026-06-13 CSN5841 SZX → XIY Jun 13, 09:05 UTCJun 13, 09:20 UTC15m
2026-06-13 CSN3465 - Jun 13, 00:35 UTCJun 13, 00:55 UTC20m
2026-06-12 CSN5841 SZX → XIY Jun 12, 07:10 UTCJun 12, 07:25 UTC15m
2026-06-12 CSN3560 NKG → SZX Jun 12, 05:25 UTCJun 12, 05:40 UTC15m
2026-06-12 CSN3559 SZX → NKG Jun 12, 00:30 UTCJun 12, 00:40 UTC10m
2026-06-11 CSN8798 TNA → SZX Jun 11, 06:10 UTCJun 11, 06:25 UTC15m
2026-06-11 CSN8797 SZX → TNA Jun 11, 00:05 UTCJun 11, 00:15 UTC10m
2026-06-09 CSN3584 KHN → SZX Jun 9, 10:10 UTCJun 9, 10:25 UTC15m
2026-06-09 CSN3583 SZX → KHN Jun 9, 03:10 UTCJun 9, 03:20 UTC10m
2026-06-08 CSN8819 SZX → KMG Jun 8, 08:10 UTCJun 8, 08:45 UTC35m
2026-06-08 CSN8819 SZX → KMG Jun 8, 07:30 UTCJun 8, 07:40 UTC10m
2026-06-08 CSN3560 NKG → SZX Jun 8, 05:30 UTCJun 8, 05:40 UTC10m
2026-06-07 CSN5841 SZX → XIY Jun 7, 07:55 UTCJun 7, 08:15 UTC20m
2026-06-07 CSN3560 NKG → SZX Jun 7, 05:10 UTCJun 7, 05:30 UTC20m

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-1831 page for operator, model, and routing details .

Mode-S 780C3F frequently asked

What is Mode-S code 780C3F?
780C3F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1831.
Where is Mode-S 780C3F registered?
Mode-S code 780C3F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780C3F broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780C3F, octal 36006077, decimal 7,867,455.
What flights does 780C3F operate?
Mode-S 780C3F has broadcast 20 distinct callsigns, including CSN3560, CSN3559, CSN8099, CSN5841, CSN8712.