Apparatus

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sensors Mode-S transponder

780BD1

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1918 · BOEING 737-800

Hex
780BD1
Octal
36005721
Decimal
7,867,345
Country
CN
Tail
B-1918
Type
B738
No current signal · last broadcast 1h ago
Flights observed
46
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 780BD1.

Country allocation

The ICAO 24-bit address 780BD1 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
CSN8356 - 7 2026-05-17
CSN8355 - 6 2026-05-17
CSN6704 China Southern Airlines 4 2026-05-23
CSN6703 China Southern Airlines 3 2026-05-23
CSN3875 China Southern Airlines 3 2026-05-30
CSN6195 - 2 2026-05-20
CSN3884 China Southern Airlines 2 2026-05-01
CSN3876 China Southern Airlines 2 2026-05-03
CSN3857 - 2 2026-05-27
CSN3274 China Southern Airlines 2 2026-05-16
CSN8540 - 1 2026-05-28
CSN8539 - 1 2026-05-28
CSN6742 - 1 2026-04-15
CSN6196 - 1 2026-04-16
CSN3950 China Southern Airlines 1 2026-04-24
CSN3886 China Southern Airlines 1 2026-04-26
CSN3883 China Southern Airlines 1 2026-04-21
CSN3880 - 1 2026-04-22
CSN3865 - 1 2026-05-05
CSN3825 China Southern Airlines 1 2026-05-26

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN3875 YIW → SZX May 30, 00:00 UTCMay 30, 00:10 UTC10m
2026-05-28 CSN8540 - May 28, 11:45 UTCMay 28, 12:05 UTC20m
2026-05-28 CSN8539 - May 28, 06:45 UTCMay 28, 06:55 UTC10m
2026-05-27 CSN3857 - May 27, 23:40 UTCMay 28, 05:05 UTC5h 25m
2026-05-26 CSN3825 WUH → TAO May 26, 07:34 UTCMay 26, 07:45 UTC10m
2026-05-23 CSN6704 ZUH → YIW May 23, 08:35 UTCMay 23, 08:50 UTC15m
2026-05-23 CSN6703 YIW → ZUH May 23, 00:40 UTCMay 23, 00:55 UTC15m
2026-05-20 CSN6195 - May 20, 23:45 UTCMay 21, 03:40 UTC3h 55m
2026-05-18 CSN3857 - May 18, 23:50 UTCMay 19, 12:00 UTC12h 10m
2026-05-17 CSN8356 - May 17, 05:20 UTCMay 17, 14:15 UTC8h 55m
2026-05-17 CSN8355 - May 17, 01:25 UTCMay 17, 03:50 UTC2h 25m
2026-05-16 CSN3274 SZX → NNG May 16, 13:46 UTCMay 16, 14:16 UTC30m
2026-05-05 CSN3865 - May 5, 00:40 UTCMay 5, 06:05 UTC5h 25m
2026-05-03 CSN3876 SZX → YIW May 3, 03:30 UTCMay 3, 03:40 UTC10m
2026-05-03 CSN3875 YIW → SZX May 3, 00:50 UTCMay 3, 01:10 UTC20m
2026-05-01 CSN3884 YIW → CAN May 1, 07:10 UTCMay 1, 07:40 UTC30m
2026-04-29 CSN3303 YIW → CAN Apr 29, 17:05 UTCApr 29, 17:20 UTC15m
2026-04-29 CSN3884 YIW → CAN Apr 29, 09:15 UTCApr 29, 09:30 UTC15m
2026-04-28 CSN3876 SZX → YIW Apr 28, 03:15 UTCApr 28, 03:30 UTC15m
2026-04-28 CSN3875 YIW → SZX Apr 28, 00:40 UTCApr 28, 01:00 UTC20m
2026-04-26 CSN3886 CAN → YIW Apr 26, 14:30 UTCApr 26, 14:40 UTC10m
2026-04-26 CSN6704 ZUH → YIW Apr 26, 08:20 UTCApr 26, 08:35 UTC15m
2026-04-25 CSN8356 - Apr 25, 05:40 UTCApr 25, 07:50 UTC2h 10m
2026-04-25 CSN8355 - Apr 25, 01:35 UTCApr 25, 04:15 UTC2h 40m
2026-04-24 CSN3742 XMN → CAN Apr 24, 07:40 UTCApr 24, 07:50 UTC10m
2026-04-24 CSN3950 CKG → CAN Apr 24, 01:20 UTCApr 24, 02:25 UTC1h 5m
2026-04-22 CSN3880 - Apr 22, 13:00 UTCApr 22, 13:10 UTC10m
2026-04-21 CSN3304 CAN → YIW Apr 21, 09:20 UTCApr 21, 09:30 UTC10m
2026-04-21 CSN3883 CAN → YIW Apr 21, 03:35 UTCApr 21, 03:45 UTC10m
2026-04-20 CSN6704 ZUH → YIW Apr 20, 09:50 UTCApr 20, 10:05 UTC15m
2026-04-20 CSN6703 YIW → ZUH Apr 20, 01:40 UTCApr 20, 01:55 UTC15m
2026-04-19 CSN6704 ZUH → YIW Apr 19, 08:30 UTCApr 19, 08:40 UTC10m
2026-04-19 CSN6703 YIW → ZUH Apr 19, 01:30 UTCApr 19, 01:50 UTC20m
2026-04-18 CSN8356 - Apr 18, 07:35 UTCApr 18, 07:55 UTC20m
2026-04-18 CSN8356 - Apr 18, 05:45 UTCApr 18, 07:55 UTC2h 10m
2026-04-18 CSN8355 - Apr 18, 04:05 UTCApr 18, 04:20 UTC15m
2026-04-18 CSN8355 - Apr 18, 01:45 UTCApr 18, 02:10 UTC25m
2026-04-16 CSN6196 - Apr 16, 03:24 UTCApr 16, 03:39 UTC15m
2026-04-15 CSN6195 - Apr 15, 23:45 UTCApr 15, 23:55 UTC10m
2026-04-15 CSN6742 - Apr 15, 12:45 UTCApr 15, 12:55 UTC10m
2026-04-14 CSN3274 SZX → NNG Apr 14, 14:10 UTCApr 14, 14:35 UTC25m
2026-04-14 CSN8356 - Apr 14, 07:25 UTCApr 14, 07:45 UTC20m
2026-04-14 CSN8356 - Apr 14, 05:35 UTCApr 14, 05:50 UTC15m
2026-04-13 CSN8356 - Apr 13, 05:30 UTCApr 13, 07:50 UTC2h 20m
2026-04-13 CSN8355 - Apr 13, 03:25 UTCApr 13, 03:50 UTC25m
2026-04-13 CSN8355 - Apr 13, 01:15 UTCApr 13, 01:45 UTC30m

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-1918 page for operator, model, and routing details .

Mode-S 780BD1 frequently asked

What is Mode-S code 780BD1?
780BD1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1918.
Where is Mode-S 780BD1 registered?
Mode-S code 780BD1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780BD1 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 780BD1, octal 36005721, decimal 7,867,345.
What flights does 780BD1 operate?
Mode-S 780BD1 has broadcast 20 distinct callsigns, including CSN8356, CSN8355, CSN6704, CSN6703, CSN3875.