Apparatus

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sensors Mode-S transponder

780509

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6398 · AIRBUS A-321

Hex
780509
Octal
36002411
Decimal
7,865,609
Country
CN
Tail
B-6398
Type
A321
No current signal · last broadcast 1d ago
Flights observed
30
Distinct callsigns
13
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 780509.

Country allocation

The ICAO 24-bit address 780509 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
CSN6082 China Southern Airlines 5 2026-05-10
CSN6081 China Southern Airlines 5 2026-05-10
CSN316 China Southern Airlines 4 2026-05-19
CSN315 China Southern Airlines 3 2026-05-18
CSN8958 China Southern Airlines 2 2026-05-29
CSN6102 China Southern Airlines 2 2026-04-21
CSN3168 China Southern Airlines 2 2026-05-25
CSN3157 China Southern Airlines 2 2026-05-25
CSN8974 - 1 2026-05-27
CSN8930 China Southern Airlines 1 2026-04-19
CSN6101 China Southern Airlines 1 2026-04-21
CSN3194 China Southern Airlines 1 2026-05-17
CSN3193 China Southern Airlines 1 2026-05-17

Recent flights last 30

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSN8958 XMN → PKX May 29, 05:40 UTCMay 29, 05:50 UTC10m
2026-05-27 CSN8974 - May 27, 12:40 UTCMay 27, 13:00 UTC20m
2026-05-25 CSN3157 SZX → PKX May 25, 08:40 UTCMay 25, 08:55 UTC15m
2026-05-25 CSN3168 PKX → SZX May 25, 05:45 UTCMay 25, 06:05 UTC20m
2026-05-19 CSN316 ICN → PKX May 19, 00:40 UTCMay 19, 01:05 UTC25m
2026-05-18 CSN315 PKX → ICN May 18, 12:25 UTCMay 18, 12:50 UTC25m
2026-05-17 CSN3193 SZX → PKX May 17, 04:40 UTCMay 17, 04:50 UTC10m
2026-05-17 CSN3194 PKX → SZX May 17, 02:50 UTCMay 17, 03:00 UTC10m
2026-05-10 CSN6082 MFM → PKX May 10, 08:05 UTCMay 10, 08:20 UTC15m
2026-05-10 CSN6081 PKX → MFM May 10, 06:25 UTCMay 10, 06:35 UTC10m
2026-05-03 CSN6082 MFM → PKX May 3, 08:25 UTCMay 3, 08:45 UTC20m
2026-05-03 CSN6081 PKX → MFM May 3, 06:35 UTCMay 3, 06:45 UTC10m
2026-04-28 CSN6082 MFM → PKX Apr 28, 08:10 UTCApr 28, 08:30 UTC20m
2026-04-28 CSN6081 PKX → MFM Apr 28, 06:35 UTCApr 28, 06:45 UTC10m
2026-04-28 CSN316 ICN → PKX Apr 28, 01:00 UTCApr 28, 01:15 UTC15m
2026-04-27 CSN315 PKX → ICN Apr 27, 12:15 UTCApr 27, 12:35 UTC20m
2026-04-27 CSN316 ICN → PKX Apr 27, 00:45 UTCApr 27, 01:00 UTC15m
2026-04-26 CSN315 PKX → ICN Apr 26, 12:20 UTCApr 26, 12:45 UTC25m
2026-04-23 CSN8958 XMN → PKX Apr 23, 05:30 UTCApr 23, 05:40 UTC10m
2026-04-22 CSN3157 SZX → PKX Apr 22, 08:55 UTCApr 22, 09:10 UTC15m
2026-04-22 CSN3168 PKX → SZX Apr 22, 05:50 UTCApr 22, 06:05 UTC15m
2026-04-21 CSN6102 PKX → SHE Apr 21, 13:35 UTCApr 21, 13:45 UTC10m
2026-04-21 CSN6101 SHE → PKX Apr 21, 01:10 UTCApr 21, 01:20 UTC10m
2026-04-20 CSN6102 PKX → SHE Apr 20, 13:35 UTCApr 20, 13:50 UTC15m
2026-04-20 CSN6082 MFM → PKX Apr 20, 08:00 UTCApr 20, 08:20 UTC20m
2026-04-20 CSN6081 PKX → MFM Apr 20, 06:15 UTCApr 20, 06:40 UTC25m
2026-04-19 CSN8930 LHW → PKX Apr 19, 04:50 UTCApr 19, 05:05 UTC15m
2026-04-13 CSN6082 - Apr 13, 08:20 UTCApr 13, 08:35 UTC15m
2026-04-13 CSN6081 - Apr 13, 06:15 UTCApr 13, 06:45 UTC30m
2026-04-13 CSN316 ICN → PKX Apr 13, 00:55 UTCApr 13, 01:15 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-6398 page for operator, model, and routing details .

Mode-S 780509 frequently asked

What is Mode-S code 780509?
780509 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6398.
Where is Mode-S 780509 registered?
Mode-S code 780509 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780509 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780509, octal 36002411, decimal 7,865,609.
What flights does 780509 operate?
Mode-S 780509 has broadcast 13 distinct callsigns, including CSN6082, CSN6081, CSN316, CSN315, CSN8958.