Apparatus

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sensors Mode-S transponder

781809

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30CD · AIRBUS A-320neo

Hex
781809
Octal
36014011
Decimal
7,870,473
Country
CN
Tail
B-30CD
Type
A20N
Broadcasting now · callsign CSN6091 · 30,000 ft
Flights observed
50
Distinct callsigns
16
Country
CN
Last broadcast
11m ago

Current position

781809 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781809 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 16 distinct

Callsign Airline Flights Last seen
CSN3033 China Southern Airlines 11 2026-05-27
CSN3034 China Southern Airlines 10 2026-05-28
CSN3035 China Southern Airlines 5 2026-05-29
CSN3036 China Southern Airlines 4 2026-05-29
CSN8149 China Southern Airlines 2 2026-05-02
CSN8080 China Southern Airlines 2 2026-05-12
CSN8079 China Southern Airlines 2 2026-05-12
CSN6090 China Southern Airlines 2 2026-05-02
CSN6089 China Southern Airlines 2 2026-05-02
CSN6059 China Southern Airlines 2 2026-05-06
CSN3415 China Southern Airlines 2 2026-04-18
CSN6091 China Southern Airlines 1 2026-06-03
CSN3952 China Southern Airlines 1 2026-05-03
CSN3900 - 1 2026-04-24
CSN3619 China Southern Airlines 1 2026-05-11
CSN3258 - 1 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 CSN6091 CAN → VTE Jun 3, 05:40 UTCJun 3, 06:15 UTC35m
2026-05-29 CSN3036 BKK → CAN May 29, 20:20 UTCMay 29, 21:55 UTC1h 35m
2026-05-29 CSN3035 CAN → BKK May 29, 05:10 UTCMay 29, 18:40 UTC13h 30m
2026-05-28 CSN3034 CNX → CAN May 28, 11:55 UTCMay 28, 13:25 UTC1h 30m
2026-05-27 CSN3033 CAN → CNX May 27, 20:20 UTCMay 28, 10:15 UTC13h 55m
2026-05-27 CSN3035 CAN → BKK May 27, 05:09 UTCMay 27, 18:20 UTC13h 10m
2026-05-25 CSN3034 CNX → CAN May 25, 11:55 UTCMay 25, 12:35 UTC40m
2026-05-25 CSN3033 CAN → CNX May 25, 10:05 UTCMay 25, 10:35 UTC30m
2026-05-21 CSN3036 BKK → CAN May 21, 20:25 UTCMay 21, 20:50 UTC25m
2026-05-21 CSN3035 CAN → BKK May 21, 18:45 UTCMay 21, 19:15 UTC30m
2026-05-18 CSN3034 CNX → CAN May 18, 11:50 UTCMay 18, 12:10 UTC20m
2026-05-18 CSN3033 CAN → CNX May 18, 10:05 UTCMay 18, 10:30 UTC25m
2026-05-15 CSN3036 BKK → CAN May 15, 20:25 UTCMay 15, 21:00 UTC35m
2026-05-15 CSN3035 CAN → BKK May 15, 11:55 UTCMay 15, 18:15 UTC6h 19m
2026-05-15 CSN3033 CAN → CNX May 15, 08:20 UTCMay 15, 10:40 UTC2h 20m
2026-05-13 CSN3034 CNX → CAN May 13, 12:00 UTCMay 13, 12:20 UTC20m
2026-05-13 CSN3033 CAN → CNX May 13, 10:10 UTCMay 13, 10:50 UTC40m
2026-05-12 CSN8080 BKK → CAN May 12, 06:05 UTCMay 12, 10:20 UTC4h 15m
2026-05-12 CSN8079 CAN → BKK May 12, 03:40 UTCMay 12, 04:20 UTC40m
2026-05-11 CSN3619 CGO → CAN May 11, 02:45 UTCMay 11, 02:55 UTC10m
2026-05-11 - - May 11, 01:00 UTCMay 11, 01:10 UTC10m
2026-05-06 CSN6059 CAN → PNH May 6, 05:15 UTCMay 7, 03:35 UTC22h 19m
2026-05-05 CSN6059 CAN → PNH May 5, 05:20 UTCMay 5, 05:30 UTC10m
2026-05-03 CSN3952 KWL → SZX May 3, 15:15 UTCMay 3, 15:25 UTC10m
2026-05-02 CSN6090 SGN → CAN May 2, 21:45 UTCMay 2, 22:05 UTC20m
2026-05-02 CSN6089 CAN → SGN May 2, 15:55 UTCMay 2, 16:05 UTC10m
2026-05-02 CSN3034 CNX → CAN May 2, 11:50 UTCMay 2, 12:05 UTC15m
2026-05-02 CSN3033 CAN → CNX May 2, 10:05 UTCMay 2, 10:35 UTC30m
2026-05-02 CSN8149 CAN → VTE May 2, 01:50 UTCMay 2, 02:10 UTC20m
2026-05-01 CSN8080 BKK → CAN May 1, 07:10 UTCMay 1, 07:40 UTC30m
2026-05-01 CSN8079 CAN → BKK May 1, 04:00 UTCMay 1, 04:35 UTC35m
2026-04-30 CSN3036 BKK → CAN Apr 30, 20:50 UTCApr 30, 21:20 UTC30m
2026-04-30 CSN3035 CAN → BKK Apr 30, 17:55 UTCApr 30, 18:35 UTC40m
2026-04-30 CSN3034 CNX → CAN Apr 30, 11:55 UTCApr 30, 12:15 UTC20m
2026-04-30 CSN3033 CAN → CNX Apr 30, 08:25 UTCApr 30, 10:45 UTC2h 20m
2026-04-28 CSN3034 CNX → CAN Apr 28, 13:25 UTCApr 28, 13:45 UTC20m
2026-04-28 CSN3033 CAN → CNX Apr 28, 09:40 UTCApr 28, 12:05 UTC2h 25m
2026-04-26 CSN6090 SGN → CAN Apr 26, 22:00 UTCApr 26, 22:25 UTC25m
2026-04-26 CSN6089 CAN → SGN Apr 26, 15:55 UTCApr 26, 16:05 UTC10m
2026-04-26 CSN3034 CNX → CAN Apr 26, 12:00 UTCApr 26, 12:10 UTC10m
2026-04-26 CSN3033 CAN → CNX Apr 26, 08:20 UTCApr 26, 10:50 UTC2h 30m
2026-04-25 CSN3034 CNX → CAN Apr 25, 11:50 UTCApr 25, 12:10 UTC20m
2026-04-25 CSN3033 CAN → CNX Apr 25, 10:30 UTCApr 25, 10:55 UTC25m
2026-04-25 CSN3033 CAN → CNX Apr 25, 08:20 UTCApr 25, 08:35 UTC15m
2026-04-25 CSN8149 CAN → VTE Apr 25, 01:30 UTCApr 25, 01:45 UTC15m
2026-04-24 CSN3900 - Apr 24, 15:50 UTCApr 24, 16:00 UTC10m
2026-04-24 CSN3258 - Apr 24, 06:50 UTCApr 24, 07:00 UTC10m
2026-04-18 CSN3415 CAN → CKG Apr 18, 03:40 UTCApr 18, 03:50 UTC10m
2026-04-17 CSN3034 CNX → CAN Apr 17, 12:05 UTCApr 17, 12:15 UTC10m
2026-04-15 CSN3415 CAN → CKG Apr 15, 03:25 UTCApr 15, 03:35 UTC10m

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-30CD page for operator, model, and routing details .

Mode-S 781809 frequently asked

What is Mode-S code 781809?
781809 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30CD.
Where is Mode-S 781809 registered?
Mode-S code 781809 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781809 broadcasting right now?
Yes. Mode-S 781809 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781809, octal 36014011, decimal 7,870,473.
What flights does 781809 operate?
Mode-S 781809 has broadcast 16 distinct callsigns, including CSN3033, CSN3034, CSN3035, CSN3036, CSN8149.