Apparatus

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sensors Mode-S transponder

780673

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6683 · AIRBUS A-321

Hex
780673
Octal
36003163
Decimal
7,865,971
Country
CN
Tail
B-6683
Type
A321
No current signal · last broadcast Jul 26, 14:35 UTC
Flights observed
102
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:35 UTC

Last known position

Most recent position reported by Mode-S 780673.

Country allocation

The ICAO 24-bit address 780673 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
CSN6734 - 9 2026-06-26
CSN3836 - 9 2026-07-17
CSN6753 China Southern Airlines 7 2026-07-18
CSN6754 China Southern Airlines 6 2026-07-18
CSN6744 - 5 2026-07-19
CSN6740 China Southern Airlines 5 2026-06-12
CSN6781 - 4 2026-07-18
CSN6782 - 3 2026-07-15
CSN6758 - 3 2026-07-12
CSN6718 China Southern Airlines 3 2026-07-26
CSN6716 China Southern Airlines 3 2026-07-24
CSN6630 - 3 2026-07-04
CSN6624 - 3 2026-07-11
CSN6732 - 2 2026-07-12
CSN6712 China Southern Airlines 2 2026-07-25
CSN6629 China Southern Airlines 2 2026-05-17
CSN5885 China Southern Airlines 2 2026-06-11
CSN3516 China Southern Airlines 2 2026-04-29
CSN8920 - 1 2026-07-14
CSN8752 China Southern Airlines 1 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6718 PKX → SYX Jul 26, 03:45 UTCJul 26, 14:35 UTC10h 51m
2026-07-25 CSN6718 PKX → SYX Jul 25, 11:00 UTCJul 26, 06:40 UTC19h 41m
2026-07-25 CSN6718 PKX → SYX Jul 25, 08:45 UTCJul 26, 06:40 UTC21h 56m
2026-07-25 CSN6712 PKX → SYX Jul 25, 05:50 UTCJul 25, 06:00 UTC10m
2026-07-24 CSN6716 PKX → SYX Jul 24, 12:05 UTCJul 25, 04:10 UTC16h 5m
2026-07-24 CSN6715 SYX → PKX Jul 24, 09:35 UTCJul 24, 10:00 UTC25m
2026-07-22 CSN8601 PKX → HGH Jul 22, 03:15 UTCJul 22, 03:30 UTC15m
2026-07-20 CSN6712 - Jul 20, 06:55 UTCJul 20, 07:10 UTC15m
2026-07-19 CSN6744 - Jul 19, 10:40 UTCJul 19, 10:55 UTC15m
2026-07-18 CSN6781 - Jul 18, 11:05 UTCJul 19, 05:45 UTC18h 40m
2026-07-18 CSN6754 PVG → SYX Jul 18, 07:55 UTCJul 19, 05:45 UTC21h 50m
2026-07-18 CSN6753 SYX → PVG Jul 18, 01:05 UTCJul 18, 21:40 UTC20h 36m
2026-07-17 CSN6753 SYX → PVG Jul 17, 15:55 UTCJul 18, 11:20 UTC19h 26m
2026-07-17 CSN6735 SYX → CAN Jul 17, 13:55 UTCJul 17, 14:04 UTC10m
2026-07-17 CSN3836 - Jul 17, 05:10 UTCJul 17, 10:55 UTC5h 45m
2026-07-16 CSN6744 - Jul 16, 10:50 UTCJul 17, 10:44 UTC23h 55m
2026-07-15 CSN6782 - Jul 15, 14:45 UTCJul 16, 06:25 UTC15h 40m
2026-07-15 CSN6781 - Jul 15, 09:35 UTCJul 16, 06:25 UTC20h 50m
2026-07-15 CSN6781 - Jul 15, 06:05 UTCJul 16, 01:25 UTC19h 20m
2026-07-14 CSN6781 - Jul 14, 14:20 UTCJul 15, 09:55 UTC19h 34m
2026-07-14 CSN8920 - Jul 14, 10:15 UTCJul 15, 06:25 UTC20h 9m
2026-07-14 CSN6754 - Jul 14, 06:50 UTCJul 15, 06:25 UTC23h 34m
2026-07-14 CSN6754 - Jul 14, 01:45 UTCJul 14, 14:35 UTC12h 50m
2026-07-13 CSN6754 - Jul 13, 11:50 UTCJul 14, 10:20 UTC22h 30m
2026-07-13 CSN6753 - Jul 13, 07:05 UTCJul 14, 06:45 UTC23h 40m
2026-07-13 CSN6753 - Jul 13, 04:10 UTCJul 14, 02:40 UTC22h 30m
2026-07-12 CSN6758 - Jul 12, 15:35 UTCJul 12, 15:55 UTC20m
2026-07-12 CSN6732 - Jul 12, 02:10 UTCJul 12, 10:01 UTC7h 50m
2026-07-11 CSN6624 - Jul 11, 05:45 UTCJul 11, 14:15 UTC8h 30m
2026-07-10 CSN6624 - Jul 10, 09:30 UTCJul 11, 06:10 UTC20h 40m
2026-07-10 CSN6624 - Jul 10, 06:50 UTCJul 11, 06:10 UTC23h 20m
2026-07-10 CSN6753 - Jul 10, 01:20 UTCJul 10, 10:20 UTC9h 0m
2026-07-09 CSN6753 - Jul 9, 08:10 UTCJul 10, 06:45 UTC22h 35m
2026-07-08 CSN6758 - Jul 8, 15:45 UTCJul 8, 16:10 UTC25m
2026-07-08 CSN6757 - Jul 8, 13:50 UTCJul 8, 14:05 UTC15m
2026-07-08 CSN6936 - Jul 8, 10:15 UTCJul 8, 10:45 UTC30m
2026-07-07 CSN6716 PKX → SYX Jul 7, 16:50 UTCJul 7, 17:10 UTC20m
2026-07-07 CSN6716 PKX → SYX Jul 7, 14:15 UTCJul 7, 14:25 UTC10m
2026-07-06 CSN6717 - Jul 6, 10:50 UTCJul 6, 11:10 UTC20m
2026-07-05 CSN6782 - Jul 5, 17:15 UTCJul 6, 09:00 UTC15h 45m
2026-07-05 CSN6782 - Jul 5, 09:20 UTCJul 6, 08:45 UTC23h 25m
2026-07-04 CSN6630 - Jul 4, 14:15 UTCJul 5, 09:25 UTC19h 10m
2026-07-03 CSN6630 - Jul 3, 22:55 UTCJul 4, 14:35 UTC15h 40m
2026-07-02 CSN6744 - Jul 2, 11:00 UTCJul 2, 11:10 UTC10m
2026-07-02 CSN6699 - Jul 2, 00:10 UTCJul 2, 08:20 UTC8h 10m
2026-06-30 CSN3836 - Jun 30, 05:05 UTCJun 30, 10:45 UTC5h 40m
2026-06-28 CSN6744 - Jun 28, 13:55 UTCJun 28, 14:04 UTC10m
2026-06-28 CSN6743 SYX → CAN Jun 28, 11:04 UTCJun 28, 12:09 UTC1h 5m
2026-06-28 CSN8752 TFU → SYX Jun 28, 01:04 UTCJun 28, 06:15 UTC5h 10m
2026-06-27 CSN6228 - Jun 27, 04:15 UTCJun 28, 01:34 UTC21h 20m

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-6683 page for operator, model, and routing details .

Mode-S 780673 frequently asked

What is Mode-S code 780673?
780673 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6683.
Where is Mode-S 780673 registered?
Mode-S code 780673 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780673 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780673, octal 36003163, decimal 7,865,971.
What flights does 780673 operate?
Mode-S 780673 has broadcast 20 distinct callsigns, including CSN6734, CSN3836, CSN6753, CSN6754, CSN6744.