Apparatus

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sensors Mode-S transponder

780F79

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8423 · AIRBUS A-321

Hex
780F79
Octal
36007571
Decimal
7,868,281
Country
CN
Tail
B-8423
Type
A321
No current signal · last broadcast Jul 26, 11:15 UTC
Flights observed
118
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 11:15 UTC

Last known position

Most recent position reported by Mode-S 780F79.

Country allocation

The ICAO 24-bit address 780F79 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
CSN6782 - 12 2026-07-12
CSN8752 - 9 2026-07-15
CSN3836 - 9 2026-07-21
CSN6629 China Southern Airlines 8 2026-07-19
CSN6624 - 7 2026-07-18
CSN3835 - 6 2026-07-14
CSN8920 China Southern Airlines 5 2026-06-25
CSN6744 - 5 2026-07-09
CSN6623 - 5 2026-07-07
CSN6936 China Southern Airlines 4 2026-07-26
CSN6754 - 4 2026-07-17
CSN6734 - 4 2026-06-28
CSN6732 China Southern Airlines 4 2026-07-25
CSN6190 - 4 2026-07-23
CSN6189 - 4 2026-07-06
CSN6630 - 3 2026-07-19
CSN6514 - 3 2026-06-30
CSN6758 - 2 2026-06-23
CSN6743 - 2 2026-07-09
CSN3978 China Southern Airlines 2 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6936 XIY → SYX Jul 26, 02:00 UTCJul 26, 11:15 UTC9h 16m
2026-07-25 CSN6936 XIY → SYX Jul 25, 14:00 UTCJul 26, 11:15 UTC21h 16m
2026-07-25 CSN6936 XIY → SYX Jul 25, 10:00 UTCJul 26, 06:20 UTC20h 20m
2026-07-25 CSN6732 CAN → SYX Jul 25, 02:35 UTCJul 26, 02:15 UTC23h 40m
2026-07-24 CSN6244 CGO → SYX Jul 24, 01:10 UTCJul 24, 14:50 UTC13h 40m
2026-07-23 CSN6190 - Jul 23, 11:30 UTCJul 24, 06:30 UTC19h 0m
2026-07-23 CSN6190 - Jul 23, 07:10 UTCJul 24, 01:30 UTC18h 20m
2026-07-22 CSN6190 - Jul 22, 17:15 UTCJul 23, 11:40 UTC18h 25m
2026-07-22 CSN6190 - Jul 22, 13:10 UTCJul 23, 11:40 UTC22h 30m
2026-07-22 CSN3978 SZX → SYX Jul 22, 02:40 UTCJul 22, 02:50 UTC10m
2026-07-21 CSN6757 - Jul 21, 16:25 UTCJul 21, 16:35 UTC10m
2026-07-21 CSN3836 - Jul 21, 06:30 UTCJul 21, 11:55 UTC5h 25m
2026-07-19 CSN6630 - Jul 19, 12:05 UTCJul 20, 04:45 UTC16h 40m
2026-07-19 CSN6629 SYX → HGH Jul 19, 06:55 UTCJul 20, 04:45 UTC21h 50m
2026-07-19 CSN6629 SYX → HGH Jul 19, 00:40 UTCJul 19, 12:15 UTC11h 35m
2026-07-18 CSN6629 SYX → HGH Jul 18, 15:15 UTCJul 19, 12:15 UTC21h 0m
2026-07-18 CSN6629 SYX → HGH Jul 18, 10:55 UTCJul 19, 07:10 UTC20h 15m
2026-07-18 CSN6624 - Jul 18, 07:00 UTCJul 19, 04:10 UTC21h 10m
2026-07-17 CSN6754 - Jul 17, 01:09 UTCJul 17, 07:05 UTC5h 55m
2026-07-16 CSN6754 - Jul 16, 10:20 UTCJul 17, 07:05 UTC20h 45m
2026-07-16 CSN3836 - Jul 16, 09:40 UTCJul 17, 07:05 UTC21h 25m
2026-07-15 CSN3836 - Jul 15, 13:45 UTCJul 16, 10:50 UTC21h 5m
2026-07-15 CSN8752 - Jul 15, 05:50 UTCJul 15, 06:05 UTC15m
2026-07-14 CSN3835 - Jul 14, 05:20 UTCJul 14, 10:45 UTC5h 25m
2026-07-13 CSN3835 - Jul 13, 11:10 UTCJul 14, 05:30 UTC18h 20m
2026-07-12 CSN6782 - Jul 12, 13:35 UTCJul 13, 06:15 UTC16h 40m
2026-07-12 CSN6782 - Jul 12, 08:55 UTCJul 13, 06:15 UTC21h 20m
2026-07-12 CSN6782 - Jul 12, 05:45 UTCJul 12, 14:45 UTC9h 0m
2026-07-11 CSN6624 - Jul 11, 10:35 UTCJul 12, 09:35 UTC23h 0m
2026-07-11 CSN6754 - Jul 11, 00:55 UTCJul 11, 06:55 UTC6h 0m
2026-07-09 CSN6744 - Jul 9, 13:05 UTCJul 10, 02:35 UTC13h 30m
2026-07-09 CSN6743 - Jul 9, 10:45 UTCJul 9, 11:10 UTC25m
2026-07-08 CSN6717 - Jul 8, 10:20 UTCJul 8, 10:50 UTC30m
2026-07-08 CSN6624 - Jul 8, 06:20 UTCJul 8, 06:35 UTC15m
2026-07-07 CSN6624 - Jul 7, 10:20 UTCJul 8, 06:35 UTC20h 15m
2026-07-07 CSN6623 - Jul 7, 09:25 UTCJul 8, 06:35 UTC21h 10m
2026-07-06 CSN6189 - Jul 6, 07:00 UTCJul 6, 07:20 UTC20m
2026-07-05 CSN6733 - Jul 5, 05:45 UTCJul 5, 05:55 UTC10m
2026-07-03 CSN3836 - Jul 3, 22:55 UTCJul 4, 11:05 UTC12h 10m
2026-07-03 CSN6629 - Jul 3, 06:25 UTCJul 4, 05:30 UTC23h 5m
2026-07-02 CSN6782 - Jul 2, 14:15 UTCJul 3, 07:15 UTC17h 0m
2026-07-02 CSN6782 - Jul 2, 09:25 UTCJul 3, 07:15 UTC21h 50m
2026-07-02 CSN6782 - Jul 2, 05:45 UTCJul 2, 15:25 UTC9h 40m
2026-07-01 CSN6623 - Jul 1, 09:35 UTCJul 2, 05:55 UTC20h 20m
2026-06-30 CSN6514 - Jun 30, 13:00 UTCJun 30, 13:15 UTC15m
2026-06-29 CSN6189 - Jun 29, 00:14 UTCJun 29, 12:39 UTC12h 25m
2026-06-28 CSN6189 - Jun 28, 16:45 UTCJun 29, 12:39 UTC19h 55m
2026-06-28 CSN6189 - Jun 28, 10:44 UTCJun 29, 07:34 UTC20h 50m
2026-06-28 CSN6734 - Jun 28, 08:19 UTCJun 28, 09:05 UTC45m
2026-06-27 CSN6624 - Jun 27, 05:59 UTCJun 27, 06:15 UTC15m

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-8423 page for operator, model, and routing details .

Mode-S 780F79 frequently asked

What is Mode-S code 780F79?
780F79 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8423.
Where is Mode-S 780F79 registered?
Mode-S code 780F79 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780F79 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780F79, octal 36007571, decimal 7,868,281.
What flights does 780F79 operate?
Mode-S 780F79 has broadcast 20 distinct callsigns, including CSN6782, CSN8752, CSN3836, CSN6629, CSN6624.