Apparatus

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sensors Mode-S transponder

781935

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30EV · AIRBUS A-321neo

Hex
781935
Octal
36014465
Decimal
7,870,773
Country
CN
Tail
B-30EV
Type
A21N
No current signal · last broadcast 18d ago
Flights observed
105
Distinct callsigns
20
Country
CN
Last broadcast
18d ago

Last known position

Most recent position reported by Mode-S 781935.

Country allocation

The ICAO 24-bit address 781935 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
CSN8048 China Southern Airlines 4 2026-05-05
CSN8047 China Southern Airlines 4 2026-05-05
CSN8353 China Southern Airlines 3 2026-04-25
CSN6621 China Southern Airlines 3 2026-05-11
CSN3366 China Southern Airlines 3 2026-05-02
CSN8492 China Southern Airlines 2 2026-04-19
CSN8354 China Southern Airlines 2 2026-04-25
CSN6622 China Southern Airlines 2 2026-04-25
CSN6386 China Southern Airlines 2 2026-04-29
CSN5846 China Southern Airlines 2 2026-05-03
CSN5845 China Southern Airlines 2 2026-05-02
CSN5032 China Southern Airlines 2 2026-04-26
CSN5031 China Southern Airlines 2 2026-04-26
CSN3633 China Southern Airlines 2 2026-05-03
CSN3613 China Southern Airlines 2 2026-05-06
CSN3590 China Southern Airlines 2 2026-04-30
CSN3578 China Southern Airlines 2 2026-04-28
CSN3577 China Southern Airlines 2 2026-04-27
CSN3570 China Southern Airlines 2 2026-05-09
CSN3569 China Southern Airlines 2 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-12 CSN3167 SZX → PKX May 12, 05:55 UTCMay 12, 06:05 UTC10m
2026-05-12 CSN3576 SHA → SZX May 12, 04:05 UTCMay 12, 04:30 UTC25m
2026-05-11 CSN3433 SZX → CTU May 11, 10:10 UTCMay 11, 10:25 UTC15m
2026-05-11 CSN6621 SZX → XIY May 11, 02:25 UTCMay 11, 02:40 UTC15m
2026-05-10 CSN3370 CGQ → SZX May 10, 13:25 UTCMay 10, 13:40 UTC15m
2026-05-10 CSN3369 SZX → CGQ May 10, 03:55 UTCMay 10, 04:09 UTC15m
2026-05-10 CSN8738 NGB → SZX May 10, 01:20 UTCMay 10, 01:30 UTC10m
2026-05-09 CSN8737 SZX → NGB May 9, 13:30 UTCMay 9, 13:40 UTC10m
2026-05-09 CSN8698 SYX → SZX May 9, 10:50 UTCMay 9, 11:05 UTC15m
2026-05-09 CSN8697 SZX → DLU May 9, 07:30 UTCMay 9, 07:50 UTC20m
2026-05-09 CSN3570 HGH → SZX May 9, 05:25 UTCMay 9, 05:45 UTC20m
2026-05-09 CSN3569 SZX → HGH May 9, 00:30 UTCMay 9, 00:40 UTC10m
2026-05-08 CSN5820 TSN → SZX May 8, 08:59 UTCMay 8, 09:09 UTC10m
2026-05-08 CSN5819 SZX → TSN May 8, 01:49 UTCMay 8, 02:04 UTC15m
2026-05-07 CSN3558 SHA → SZX May 7, 12:35 UTCMay 7, 12:55 UTC20m
2026-05-07 CSN3557 SZX → PVG May 7, 08:15 UTCMay 7, 11:45 UTC3h 30m
2026-05-07 CSN3557 SZX → PVG May 7, 07:20 UTCMay 7, 07:30 UTC10m
2026-05-07 CSN3570 HGH → SZX May 7, 05:20 UTCMay 7, 05:45 UTC25m
2026-05-07 CSN3569 SZX → HGH May 7, 00:35 UTCMay 7, 00:45 UTC10m
2026-05-06 CSN3614 CGQ → SZX May 6, 09:25 UTCMay 6, 09:40 UTC15m
2026-05-06 CSN3613 SZX → CGQ May 6, 02:55 UTCMay 6, 06:55 UTC4h 0m
2026-05-06 CSN3613 SZX → CGQ May 6, 00:35 UTCMay 6, 00:46 UTC10m
2026-05-05 CSN8048 SIN → SZX May 5, 16:45 UTCMay 5, 17:05 UTC20m
2026-05-05 CSN8048 SIN → SZX May 5, 13:35 UTCMay 5, 13:50 UTC15m
2026-05-05 CSN8047 SZX → SIN May 5, 10:55 UTCMay 5, 11:25 UTC30m
2026-05-05 CSN8047 SZX → SIN May 5, 07:55 UTCMay 5, 08:05 UTC10m
2026-05-05 CSN5102 YIW → SZX May 5, 06:25 UTCMay 5, 06:35 UTC10m
2026-05-05 CSN5101 SZX → YIW May 5, 02:25 UTCMay 5, 02:35 UTC10m
2026-05-04 CSN3225 SZX → XIY May 4, 08:35 UTCMay 4, 08:45 UTC10m
2026-05-04 CSN3176 PKX → SZX May 4, 06:45 UTCMay 4, 06:55 UTC10m
2026-05-03 CSN3633 SZX → HRB May 3, 09:05 UTCMay 3, 09:20 UTC15m
2026-05-03 CSN3633 SZX → HRB May 3, 06:45 UTCMay 3, 06:55 UTC10m
2026-05-03 CSN5846 TYN → SZX May 3, 02:30 UTCMay 3, 02:40 UTC10m
2026-05-02 CSN5845 SZX → TYN May 2, 12:40 UTCMay 2, 12:50 UTC10m
2026-05-02 CSN3552 SHA → SZX May 2, 09:25 UTCMay 2, 09:45 UTC20m
2026-05-02 CSN3551 SZX → SHA May 2, 04:10 UTCMay 2, 04:25 UTC15m
2026-05-02 CSN3366 HGH → SZX May 2, 01:25 UTCMay 2, 02:05 UTC40m
2026-05-01 CSN8598 HGH → SZX May 1, 10:10 UTCMay 1, 10:30 UTC20m
2026-05-01 CSN8597 SZX → HGH May 1, 05:15 UTCMay 1, 05:25 UTC10m
2026-05-01 CSN5846 TYN → SZX May 1, 02:05 UTCMay 1, 02:45 UTC40m
2026-04-30 CSN5845 SZX → TYN Apr 30, 12:35 UTCApr 30, 12:45 UTC10m
2026-04-30 CSN8965 - Apr 30, 04:55 UTCApr 30, 05:05 UTC10m
2026-04-30 CSN3590 SHA → SZX Apr 30, 02:25 UTCApr 30, 02:35 UTC10m
2026-04-29 CSN6386 SHE → SZX Apr 29, 10:40 UTCApr 29, 10:50 UTC10m
2026-04-29 CSN6386 SHE → SZX Apr 29, 01:25 UTCApr 29, 07:59 UTC6h 35m
2026-04-28 CSN5844 TAO → SZX Apr 28, 11:15 UTCApr 28, 11:30 UTC15m
2026-04-28 CSN5843 SZX → TAO Apr 28, 03:55 UTCApr 28, 04:10 UTC15m
2026-04-28 CSN3578 NKG → SZX Apr 28, 02:15 UTCApr 28, 02:25 UTC10m
2026-04-27 CSN3577 SZX → NKG Apr 27, 13:50 UTCApr 27, 14:00 UTC10m
2026-04-27 CSN3562 SHA → SZX Apr 27, 11:50 UTCApr 27, 12:10 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-30EV page for operator, model, and routing details .

Mode-S 781935 frequently asked

What is Mode-S code 781935?
781935 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30EV.
Where is Mode-S 781935 registered?
Mode-S code 781935 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781935 broadcasting right now?
No active broadcast right now. Last signal was 18d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781935, octal 36014465, decimal 7,870,773.
What flights does 781935 operate?
Mode-S 781935 has broadcast 20 distinct callsigns, including CSN8048, CSN8047, CSN8353, CSN6621, CSN3366.