Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781BF7

ICAO 24-bit transponder address · allocated to China

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

Hex
781BF7
Octal
36015767
Decimal
7,871,479
Country
CN
Tail
B-324S
Type
A359
No current signal · last broadcast 1h ago
Flights observed
104
Distinct callsigns
13
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 781BF7.

Country allocation

The ICAO 24-bit address 781BF7 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
CSN302 China Southern Airlines 14 2026-05-24
CSN322 China Southern Airlines 13 2026-05-29
CSN674 China Southern Airlines 11 2026-05-27
CSN321 China Southern Airlines 11 2026-05-28
CSN306 China Southern Airlines 11 2026-05-21
CSN305 China Southern Airlines 11 2026-05-30
CSN301 China Southern Airlines 8 2026-05-24
CSN673 China Southern Airlines 7 2026-05-26
CSN350 China Southern Airlines 7 2026-05-19
CSN349 China Southern Airlines 4 2026-05-19
CSN346 China Southern Airlines 4 2026-05-05
CSN345 China Southern Airlines 2 2026-05-04
CSN6916 China Southern Airlines 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN305 CAN → AKL May 30, 01:30 UTCMay 30, 03:45 UTC2h 15m
2026-05-29 CSN305 CAN → AKL May 29, 18:00 UTCMay 30, 01:10 UTC7h 10m
2026-05-29 CSN322 MEL → CAN May 29, 08:50 UTCMay 29, 09:10 UTC20m
2026-05-29 CSN322 MEL → CAN May 29, 00:35 UTCMay 29, 08:05 UTC7h 30m
2026-05-28 CSN321 CAN → MEL May 28, 13:50 UTCMay 28, 22:10 UTC8h 20m
2026-05-27 CSN6916 PKX → URC May 27, 10:00 UTCMay 27, 10:10 UTC10m
2026-05-27 CSN674 LHR → PKX May 27, 04:49 UTCMay 27, 05:04 UTC15m
2026-05-26 CSN674 LHR → PKX May 26, 20:15 UTCMay 27, 02:24 UTC6h 10m
2026-05-26 CSN673 PKX → LHR May 26, 09:45 UTCMay 26, 16:40 UTC6h 55m
2026-05-26 CSN673 PKX → LHR May 26, 06:34 UTCMay 26, 06:49 UTC15m
2026-05-24 CSN302 SYD → CAN May 24, 20:45 UTCMay 24, 21:00 UTC15m
2026-05-24 CSN302 SYD → CAN May 24, 11:45 UTCMay 24, 19:55 UTC8h 10m
2026-05-24 CSN301 CAN → SYD May 24, 00:35 UTCMay 24, 08:35 UTC8h 0m
2026-05-23 CSN302 SYD → CAN May 23, 20:40 UTCMay 23, 20:55 UTC15m
2026-05-23 CSN302 SYD → CAN May 23, 11:55 UTCMay 23, 19:50 UTC7h 55m
2026-05-23 CSN301 CAN → SYD May 23, 00:50 UTCMay 23, 08:50 UTC7h 59m
2026-05-22 CSN302 SYD → CAN May 22, 11:40 UTCMay 22, 20:25 UTC8h 45m
2026-05-22 CSN301 CAN → SYD May 22, 00:40 UTCMay 22, 09:10 UTC8h 30m
2026-05-21 CSN306 AKL → CAN May 21, 09:35 UTCMay 21, 20:35 UTC11h 0m
2026-05-20 CSN305 CAN → AKL May 20, 17:25 UTCMay 21, 03:30 UTC10h 5m
2026-05-20 CSN322 MEL → CAN May 20, 08:50 UTCMay 20, 09:10 UTC20m
2026-05-20 CSN322 MEL → CAN May 20, 00:30 UTCMay 20, 08:00 UTC7h 31m
2026-05-19 CSN321 CAN → MEL May 19, 13:50 UTCMay 19, 22:15 UTC8h 25m
2026-05-19 CSN350 KUL → CAN May 19, 06:15 UTCMay 19, 06:25 UTC10m
2026-05-19 CSN349 CAN → KUL May 19, 03:45 UTCMay 19, 04:15 UTC30m
2026-05-18 CSN302 SYD → CAN May 18, 20:50 UTCMay 18, 21:15 UTC25m
2026-05-18 CSN302 SYD → CAN May 18, 11:55 UTCMay 18, 20:00 UTC8h 4m
2026-05-18 CSN301 CAN → SYD May 18, 00:30 UTCMay 18, 08:30 UTC8h 0m
2026-05-17 CSN302 SYD → CAN May 17, 20:35 UTCMay 17, 20:50 UTC15m
2026-05-17 CSN302 SYD → CAN May 17, 11:55 UTCMay 17, 19:45 UTC7h 50m
2026-05-17 CSN301 CAN → SYD May 17, 01:55 UTCMay 17, 09:15 UTC7h 20m
2026-05-14 CSN674 LHR → PKX May 14, 21:00 UTCMay 15, 03:20 UTC6h 20m
2026-05-14 CSN673 PKX → LHR May 14, 09:55 UTCMay 14, 17:00 UTC7h 5m
2026-05-12 CSN674 LHR → PKX May 12, 20:15 UTCMay 13, 02:30 UTC6h 15m
2026-05-12 CSN673 PKX → LHR May 12, 09:55 UTCMay 12, 16:50 UTC6h 55m
2026-05-10 CSN674 LHR → PKX May 10, 20:20 UTCMay 11, 02:25 UTC6h 5m
2026-05-10 CSN673 PKX → LHR May 10, 09:00 UTCMay 10, 17:30 UTC8h 30m
2026-05-09 CSN674 LHR → PKX May 9, 04:50 UTCMay 9, 05:00 UTC10m
2026-05-08 CSN674 LHR → PKX May 8, 20:20 UTCMay 9, 02:25 UTC6h 5m
2026-05-08 CSN673 PKX → LHR May 8, 06:39 UTCMay 8, 17:15 UTC10h 35m
2026-05-05 CSN346 AMS → PKX May 5, 04:10 UTCMay 5, 04:25 UTC15m
2026-05-04 CSN346 AMS → PKX May 4, 20:05 UTCMay 5, 01:45 UTC5h 40m
2026-05-04 CSN345 PEK → AMS May 4, 06:35 UTCMay 4, 16:50 UTC10h 15m
2026-05-03 CSN674 LHR → PKX May 3, 05:30 UTCMay 3, 05:40 UTC10m
2026-05-02 CSN674 LHR → PKX May 2, 20:55 UTCMay 3, 03:05 UTC6h 10m
2026-05-02 CSN673 PKX → LHR May 2, 07:00 UTCMay 2, 17:15 UTC10h 15m
2026-05-01 CSN346 AMS → PKX May 1, 04:30 UTCMay 1, 04:45 UTC15m
2026-04-30 CSN346 AMS → PKX Apr 30, 19:55 UTCMay 1, 02:00 UTC6h 5m
2026-04-30 CSN345 PEK → AMS Apr 30, 06:35 UTCApr 30, 16:10 UTC9h 35m
2026-04-29 CSN302 SYD → CAN Apr 29, 20:10 UTCApr 29, 20:30 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-324S page for operator, model, and routing details .

Mode-S 781BF7 frequently asked

What is Mode-S code 781BF7?
781BF7 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-324S.
Where is Mode-S 781BF7 registered?
Mode-S code 781BF7 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781BF7 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 781BF7, octal 36015767, decimal 7,871,479.
What flights does 781BF7 operate?
Mode-S 781BF7 has broadcast 13 distinct callsigns, including CSN302, CSN322, CSN674, CSN321, CSN306.