Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781BF6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-324R · AIRBUS A-350-900

Hex
781BF6
Octal
36015766
Decimal
7,871,478
Country
CN
Tail
B-324R
Type
A359
No current signal · last broadcast 18h ago
Flights observed
109
Distinct callsigns
13
Country
CN
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 781BF6.

Country allocation

The ICAO 24-bit address 781BF6 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 13 distinct

Callsign Airline Flights Last seen
CSN322 China Southern Airlines 27 2026-05-25
CSN302 China Southern Airlines 16 2026-05-27
CSN321 China Southern Airlines 15 2026-05-24
CSN301 China Southern Airlines 9 2026-05-27
CSN346 China Southern Airlines 7 2026-05-16
CSN674 China Southern Airlines 6 2026-05-29
CSN345 China Southern Airlines 6 2026-05-16
CSN306 China Southern Airlines 6 2026-05-26
CSN673 China Southern Airlines 5 2026-05-28
CSN350 China Southern Airlines 4 2026-05-21
CSN305 China Southern Airlines 4 2026-05-25
CSN349 China Southern Airlines 3 2026-05-21
CSN3100 China Southern Airlines 1 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSN674 LHR → PKX May 29, 05:20 UTCMay 29, 05:35 UTC15m
2026-05-28 CSN674 LHR → PKX May 28, 20:20 UTCMay 29, 03:00 UTC6h 40m
2026-05-28 CSN673 PKX → LHR May 28, 06:40 UTCMay 28, 16:30 UTC9h 50m
2026-05-27 CSN302 SYD → CAN May 27, 19:55 UTCMay 27, 20:20 UTC25m
2026-05-27 CSN302 SYD → CAN May 27, 11:45 UTCMay 27, 19:05 UTC7h 20m
2026-05-27 CSN301 CAN → SYD May 27, 00:19 UTCMay 27, 08:40 UTC8h 21m
2026-05-26 CSN306 AKL → CAN May 26, 09:29 UTCMay 26, 20:40 UTC11h 10m
2026-05-25 CSN305 CAN → AKL May 25, 17:20 UTCMay 26, 03:00 UTC9h 39m
2026-05-25 CSN322 MEL → CAN May 25, 09:05 UTCMay 25, 09:20 UTC15m
2026-05-25 CSN322 MEL → CAN May 25, 04:30 UTCMay 25, 08:10 UTC3h 40m
2026-05-24 CSN321 CAN → MEL May 24, 13:45 UTCMay 24, 21:45 UTC8h 0m
2026-05-24 CSN322 MEL → CAN May 24, 09:15 UTCMay 24, 09:30 UTC15m
2026-05-24 CSN322 MEL → CAN May 24, 00:40 UTCMay 24, 08:25 UTC7h 45m
2026-05-23 CSN321 CAN → MEL May 23, 14:35 UTCMay 23, 22:35 UTC8h 0m
2026-05-23 CSN322 MEL → CAN May 23, 09:25 UTCMay 23, 09:50 UTC25m
2026-05-23 CSN322 MEL → CAN May 23, 00:35 UTCMay 23, 08:35 UTC8h 0m
2026-05-22 CSN321 CAN → MEL May 22, 13:50 UTCMay 22, 21:55 UTC8h 5m
2026-05-22 CSN322 MEL → CAN May 22, 10:30 UTCMay 22, 10:45 UTC15m
2026-05-22 CSN322 MEL → CAN May 22, 02:05 UTCMay 22, 09:40 UTC7h 35m
2026-05-21 CSN321 CAN → MEL May 21, 16:40 UTCMay 22, 00:00 UTC7h 20m
2026-05-21 CSN350 KUL → CAN May 21, 09:25 UTCMay 21, 09:40 UTC15m
2026-05-21 CSN350 KUL → CAN May 21, 06:00 UTCMay 21, 06:10 UTC10m
2026-05-21 CSN349 CAN → KUL May 21, 03:20 UTCMay 21, 04:00 UTC40m
2026-05-20 CSN306 AKL → CAN May 20, 09:35 UTCMay 20, 19:40 UTC10h 5m
2026-05-19 CSN305 CAN → AKL May 19, 17:10 UTCMay 20, 03:10 UTC10h 0m
2026-05-19 CSN322 MEL → CAN May 19, 09:05 UTCMay 19, 09:25 UTC20m
2026-05-19 CSN322 MEL → CAN May 19, 00:35 UTCMay 19, 08:15 UTC7h 40m
2026-05-18 CSN321 CAN → MEL May 18, 13:40 UTCMay 18, 21:40 UTC7h 59m
2026-05-18 CSN350 KUL → CAN May 18, 06:10 UTCMay 18, 06:25 UTC15m
2026-05-17 CSN3100 PEK → CAN May 17, 11:01 UTCMay 18, 04:11 UTC17h 10m
2026-05-16 CSN346 AMS → PKX May 16, 19:50 UTCMay 17, 01:45 UTC5h 55m
2026-05-16 CSN345 PEK → AMS May 16, 09:35 UTCMay 16, 15:55 UTC6h 20m
2026-05-15 CSN302 SYD → CAN May 15, 20:20 UTCMay 15, 20:40 UTC20m
2026-05-15 CSN302 SYD → CAN May 15, 11:50 UTCMay 15, 19:30 UTC7h 39m
2026-05-15 CSN301 CAN → SYD May 15, 01:40 UTCMay 15, 08:55 UTC7h 15m
2026-05-15 CSN301 CAN → SYD May 15, 00:30 UTCMay 15, 00:40 UTC10m
2026-05-14 CSN322 MEL → CAN May 14, 00:45 UTCMay 14, 07:55 UTC7h 10m
2026-05-13 CSN321 CAN → MEL May 13, 13:45 UTCMay 13, 22:40 UTC8h 55m
2026-05-13 CSN322 MEL → CAN May 13, 08:45 UTCMay 13, 09:00 UTC15m
2026-05-13 CSN322 MEL → CAN May 13, 00:40 UTCMay 13, 07:55 UTC7h 15m
2026-05-12 CSN321 CAN → MEL May 12, 13:40 UTCMay 12, 22:15 UTC8h 35m
2026-05-12 CSN322 MEL → CAN May 12, 08:50 UTCMay 12, 09:05 UTC15m
2026-05-12 CSN322 MEL → CAN May 12, 04:10 UTCMay 12, 08:00 UTC3h 50m
2026-05-11 CSN321 CAN → MEL May 11, 13:45 UTCMay 11, 22:00 UTC8h 16m
2026-05-10 CSN306 AKL → CAN May 10, 20:25 UTCMay 10, 20:54 UTC30m
2026-05-10 CSN306 AKL → CAN May 10, 09:35 UTCMay 10, 19:40 UTC10h 5m
2026-05-09 CSN305 CAN → AKL May 9, 17:20 UTCMay 10, 03:14 UTC9h 55m
2026-05-09 CSN322 MEL → CAN May 9, 09:15 UTCMay 9, 09:40 UTC25m
2026-05-09 CSN322 MEL → CAN May 9, 00:35 UTCMay 9, 08:20 UTC7h 45m
2026-05-08 CSN321 CAN → MEL May 8, 14:05 UTCMay 8, 22:35 UTC8h 30m

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-324R page for operator, model, and routing details .

Mode-S 781BF6 frequently asked

What is Mode-S code 781BF6?
781BF6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-324R.
Where is Mode-S 781BF6 registered?
Mode-S code 781BF6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781BF6 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781BF6, octal 36015766, decimal 7,871,478.
What flights does 781BF6 operate?
Mode-S 781BF6 has broadcast 13 distinct callsigns, including CSN322, CSN302, CSN321, CSN301, CSN346.