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
No current signal · last broadcast Jul 26, 13:15 UTC
Flights observed
124
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:15 UTC

Last known position

Most recent position reported by Mode-S 781809.

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 20 distinct

Callsign Airline Flights Last seen
CSN3033 China Southern Airlines 19 2026-07-26
CSN3034 China Southern Airlines 18 2026-07-26
CSN8080 - 13 2026-07-11
CSN8079 - 13 2026-07-11
CSN6090 - 6 2026-07-19
CSN6059 China Southern Airlines 6 2026-07-25
CSN6092 - 5 2026-07-16
CSN3035 China Southern Airlines 5 2026-05-29
CSN8150 - 4 2026-07-20
CSN6089 - 4 2026-07-14
CSN3036 China Southern Airlines 4 2026-05-29
CSN8327 China Southern Airlines 2 2026-07-22
CSN8149 China Southern Airlines 2 2026-05-02
CSN6091 - 2 2026-07-07
CSN6060 - 2 2026-06-25
CSN3499 - 2 2026-07-05
CSN3415 China Southern Airlines 2 2026-04-18
CSN8328 - 1 2026-07-18
CSN3952 China Southern Airlines 1 2026-05-03
CSN3900 - 1 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN3034 CNX → CAN Jul 26, 11:50 UTCJul 26, 13:15 UTC1h 25m
2026-07-26 CSN3033 CAN → CNX Jul 26, 02:00 UTCJul 26, 10:25 UTC8h 26m
2026-07-25 CSN6059 CAN → PNH Jul 25, 06:00 UTCJul 25, 06:10 UTC10m
2026-07-25 - - Jul 25, 04:05 UTCJul 25, 04:15 UTC10m
2026-07-24 CSN3034 CNX → CAN Jul 24, 12:05 UTCJul 24, 13:30 UTC1h 25m
2026-07-24 CSN3033 CAN → CNX Jul 24, 08:35 UTCJul 24, 10:50 UTC2h 15m
2026-07-24 - - Jul 24, 06:25 UTCJul 24, 06:40 UTC15m
2026-07-23 CSN3800 - Jul 23, 12:50 UTCJul 23, 13:00 UTC10m
2026-07-22 CSN8327 CAN → CNX Jul 22, 04:20 UTCJul 22, 05:25 UTC1h 5m
2026-07-21 CSN6059 CAN → PNH Jul 21, 06:10 UTCJul 21, 06:20 UTC10m
2026-07-20 CSN8150 - Jul 20, 05:00 UTCJul 20, 05:15 UTC15m
2026-07-19 CSN6090 - Jul 19, 21:50 UTCJul 19, 22:20 UTC30m
2026-07-19 CSN3034 - Jul 19, 11:50 UTCJul 19, 13:15 UTC1h 25m
2026-07-19 CSN3033 - Jul 19, 08:20 UTCJul 19, 10:25 UTC2h 5m
2026-07-19 CSN8150 - Jul 19, 01:30 UTCJul 19, 05:20 UTC3h 50m
2026-07-18 CSN8328 - Jul 18, 07:10 UTCJul 18, 08:35 UTC1h 25m
2026-07-18 CSN8327 - Jul 18, 03:30 UTCJul 18, 05:40 UTC2h 10m
2026-07-16 CSN6092 - Jul 16, 10:35 UTCJul 16, 10:55 UTC20m
2026-07-15 CSN3034 - Jul 15, 11:50 UTCJul 15, 13:10 UTC1h 20m
2026-07-15 CSN3033 - Jul 15, 01:35 UTCJul 15, 10:30 UTC8h 55m
2026-07-14 CSN6090 - Jul 14, 21:55 UTCJul 14, 22:15 UTC20m
2026-07-14 CSN6089 - Jul 14, 16:10 UTCJul 14, 16:20 UTC10m
2026-07-14 CSN3034 - Jul 14, 12:05 UTCJul 14, 13:25 UTC1h 20m
2026-07-14 CSN3033 - Jul 14, 08:45 UTCJul 14, 11:05 UTC2h 20m
2026-07-14 CSN8150 - Jul 14, 05:40 UTCJul 14, 06:00 UTC20m
2026-07-12 CSN3714 - Jul 12, 02:40 UTCJul 12, 03:20 UTC40m
2026-07-11 CSN8080 - Jul 11, 05:50 UTCJul 11, 06:10 UTC20m
2026-07-11 CSN8079 - Jul 11, 02:20 UTCJul 11, 04:35 UTC2h 15m
2026-07-10 CSN6092 - Jul 10, 06:05 UTCJul 10, 09:45 UTC3h 40m
2026-07-09 CSN8080 - Jul 9, 06:20 UTCJul 10, 06:05 UTC23h 45m
2026-07-09 CSN8079 - Jul 9, 02:05 UTCJul 9, 04:35 UTC2h 30m
2026-07-08 CSN8080 - Jul 8, 07:35 UTCJul 8, 07:45 UTC10m
2026-07-08 CSN8080 - Jul 8, 06:15 UTCJul 8, 06:40 UTC25m
2026-07-08 CSN8079 - Jul 8, 04:25 UTCJul 8, 04:55 UTC30m
2026-07-07 CSN6090 - Jul 7, 22:00 UTCJul 7, 22:30 UTC30m
2026-07-07 CSN6091 - Jul 7, 05:50 UTCJul 7, 09:55 UTC4h 5m
2026-07-06 CSN3034 - Jul 6, 14:50 UTCJul 6, 16:05 UTC1h 15m
2026-07-06 CSN3033 - Jul 6, 11:55 UTCJul 6, 13:25 UTC1h 30m
2026-07-06 - - Jul 6, 06:40 UTCJul 6, 06:50 UTC10m
2026-07-06 CSN8150 - Jul 6, 01:50 UTCJul 6, 05:30 UTC3h 40m
2026-07-05 CSN3499 - Jul 5, 10:45 UTCJul 5, 11:45 UTC1h 0m
2026-07-03 CSN6059 - Jul 3, 05:25 UTCJul 3, 10:45 UTC5h 20m
2026-07-02 CSN8080 - Jul 2, 06:00 UTCJul 2, 07:30 UTC1h 30m
2026-07-02 CSN8079 - Jul 2, 02:25 UTCJul 2, 04:35 UTC2h 10m
2026-07-01 CSN6090 - Jul 1, 21:50 UTCJul 1, 22:15 UTC25m
2026-07-01 CSN6089 - Jul 1, 16:15 UTCJul 1, 16:25 UTC10m
2026-07-01 CSN3034 - Jul 1, 11:45 UTCJul 1, 13:05 UTC1h 20m
2026-07-01 CSN3033 - Jul 1, 09:05 UTCJul 1, 10:30 UTC1h 25m
2026-07-01 CSN3200 - Jul 1, 06:35 UTCJul 1, 06:45 UTC10m
2026-06-30 CSN8080 - Jun 30, 06:10 UTCJun 30, 07:40 UTC1h 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-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?
No active broadcast right now. Last signal was Jul 26, 13:15 UTC.
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 20 distinct callsigns, including CSN3033, CSN3034, CSN8080, CSN8079, CSN6090.