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 Jul 26, 02:35 UTC
Flights observed
184
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 02:35 UTC

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 20 distinct

Callsign Airline Flights Last seen
CSN322 - 31 2026-06-29
CSN302 China Southern Airlines 25 2026-07-25
CSN321 China Southern Airlines 17 2026-06-28
CSN301 China Southern Airlines 15 2026-07-25
CSN655 - 14 2026-07-16
CSN656 - 10 2026-07-17
CSN346 - 9 2026-07-20
CSN306 China Southern Airlines 8 2026-06-01
CSN674 - 7 2026-07-21
CSN673 China Southern Airlines 7 2026-07-21
CSN345 - 7 2026-07-19
CSN350 - 6 2026-06-25
CSN349 - 5 2026-06-25
CSN305 China Southern Airlines 5 2026-05-31
CSN338 - 3 2026-06-30
CSN6902 China Southern Airlines 2 2026-06-11
CSN6901 China Southern Airlines 2 2026-06-12
CSN348 China Southern Airlines 2 2026-06-27
CSN347 China Southern Airlines 2 2026-06-26
CSN316 China Southern Airlines 2 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN3529 CAN → TYN Jul 26, 02:00 UTCJul 26, 02:35 UTC35m
2026-07-25 CSN302 SYD → CAN Jul 25, 12:00 UTCJul 25, 19:45 UTC7h 45m
2026-07-25 CSN301 CAN → SYD Jul 25, 01:55 UTCJul 25, 09:10 UTC7h 15m
2026-07-25 CSN301 CAN → SYD Jul 25, 00:40 UTCJul 25, 00:50 UTC10m
2026-07-24 CSN316 ICN → PKX Jul 24, 01:00 UTCJul 24, 01:25 UTC25m
2026-07-23 CSN315 PKX → ICN Jul 23, 12:30 UTCJul 23, 12:50 UTC20m
2026-07-21 CSN674 - Jul 21, 20:30 UTCJul 22, 02:55 UTC6h 25m
2026-07-21 CSN673 PKX → LHR Jul 21, 09:45 UTCJul 21, 16:25 UTC6h 40m
2026-07-21 CSN673 PKX → LHR Jul 21, 06:40 UTCJul 21, 06:50 UTC10m
2026-07-20 CSN346 - Jul 20, 04:45 UTCJul 20, 04:55 UTC10m
2026-07-19 CSN346 - Jul 19, 20:10 UTCJul 20, 02:10 UTC6h 0m
2026-07-19 CSN345 - Jul 19, 06:35 UTCJul 19, 16:00 UTC9h 25m
2026-07-19 CSN316 ICN → PKX Jul 19, 00:45 UTCJul 19, 01:15 UTC30m
2026-07-17 CSN656 - Jul 17, 19:30 UTCJul 18, 12:45 UTC17h 16m
2026-07-17 CSN656 - Jul 17, 18:40 UTCJul 17, 19:00 UTC20m
2026-07-16 CSN655 CAN → SVO Jul 16, 21:40 UTCJul 17, 15:40 UTC18h 0m
2026-07-16 CSN655 CAN → SVO Jul 16, 19:35 UTCJul 17, 15:40 UTC20h 5m
2026-07-16 CSN655 CAN → SVO Jul 16, 18:34 UTCJul 17, 15:40 UTC21h 5m
2026-07-16 CSN655 - Jul 16, 11:10 UTCJul 16, 15:40 UTC4h 30m
2026-07-15 CSN302 - Jul 15, 20:00 UTCJul 15, 20:15 UTC15m
2026-07-15 CSN302 - Jul 15, 11:50 UTCJul 15, 19:10 UTC7h 20m
2026-07-15 CSN301 - Jul 15, 00:35 UTCJul 15, 09:05 UTC8h 30m
2026-07-14 CSN3114 - Jul 14, 13:50 UTCJul 14, 14:05 UTC15m
2026-07-13 CSN656 - Jul 13, 20:20 UTCJul 13, 22:20 UTC2h 0m
2026-07-13 CSN656 - Jul 13, 18:40 UTCJul 13, 18:55 UTC15m
2026-07-13 CSN655 - Jul 13, 15:10 UTCJul 13, 15:50 UTC40m
2026-07-13 CSN655 - Jul 13, 11:15 UTCJul 13, 13:35 UTC2h 20m
2026-07-11 CSN656 - Jul 11, 19:00 UTCJul 11, 22:50 UTC3h 50m
2026-07-11 CSN655 - Jul 11, 11:10 UTCJul 11, 15:10 UTC4h 0m
2026-07-10 CSN656 - Jul 10, 18:45 UTCJul 10, 22:35 UTC3h 50m
2026-07-10 CSN655 - Jul 10, 15:25 UTCJul 10, 15:35 UTC10m
2026-07-09 CSN656 - Jul 9, 19:25 UTCJul 10, 11:50 UTC16h 25m
2026-07-09 CSN655 - Jul 9, 16:40 UTCJul 9, 16:55 UTC15m
2026-07-09 CSN655 - Jul 9, 12:25 UTCJul 9, 14:40 UTC2h 15m
2026-07-08 CSN656 - Jul 8, 18:45 UTCJul 8, 22:40 UTC3h 55m
2026-07-08 CSN655 - Jul 8, 11:55 UTCJul 8, 16:20 UTC4h 25m
2026-07-06 CSN656 - Jul 6, 18:40 UTCJul 6, 22:40 UTC4h 0m
2026-07-06 CSN655 - Jul 6, 15:30 UTCJul 6, 15:40 UTC10m
2026-07-06 CSN655 - Jul 6, 11:10 UTCJul 6, 11:55 UTC45m
2026-07-05 CSN302 SYD → CAN Jul 5, 20:15 UTCJul 5, 20:35 UTC20m
2026-07-05 CSN302 SYD → CAN Jul 5, 12:00 UTCJul 5, 19:25 UTC7h 25m
2026-07-05 CSN301 - Jul 5, 00:45 UTCJul 5, 09:20 UTC8h 35m
2026-07-04 CSN302 SYD → CAN Jul 4, 20:35 UTCJul 4, 20:45 UTC10m
2026-07-04 CSN302 SYD → CAN Jul 4, 12:05 UTCJul 4, 19:40 UTC7h 35m
2026-07-04 CSN301 - Jul 4, 00:55 UTCJul 4, 09:05 UTC8h 10m
2026-07-03 CSN302 SYD → CAN Jul 3, 20:35 UTCJul 3, 20:50 UTC15m
2026-07-03 CSN302 SYD → CAN Jul 3, 12:00 UTCJul 3, 19:40 UTC7h 40m
2026-07-03 CSN301 - Jul 3, 00:35 UTCJul 3, 09:00 UTC8h 25m
2026-07-01 CSN656 - Jul 1, 18:30 UTCJul 1, 22:20 UTC3h 50m
2026-07-01 CSN655 - Jul 1, 11:10 UTCJul 1, 15:15 UTC4h 5m

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 Jul 26, 02:35 UTC.
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 20 distinct callsigns, including CSN322, CSN302, CSN321, CSN301, CSN655.