Apparatus

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sensors Mode-S transponder

780F7A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8425 · AIRBUS A-321

Hex
780F7A
Octal
36007572
Decimal
7,868,282
Country
CN
Tail
B-8425
Type
A321
No current signal · last broadcast 1h ago
Flights observed
102
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 780F7A.

Country allocation

The ICAO 24-bit address 780F7A 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
CSN3836 - 17 2026-07-13
CSN6624 - 9 2026-07-05
CSN8919 - 6 2026-07-01
CSN6757 - 5 2026-06-30
CSN3978 - 5 2026-07-13
CSN6782 - 4 2026-07-07
CSN6758 - 4 2026-06-30
CSN6668 - 4 2026-07-12
CSN6630 China Southern Airlines 4 2026-06-10
CSN6629 China Southern Airlines 4 2026-06-09
CSN6744 - 3 2026-07-13
CSN3835 - 3 2026-07-08
CSN8920 - 2 2026-07-05
CSN8276 - 2 2026-06-28
CSN8208 China Southern Airlines 2 2026-06-18
CSN6781 - 2 2026-07-06
CSN6754 China Southern Airlines 2 2026-05-10
CSN6739 China Southern Airlines 2 2026-06-08
CSN6623 - 2 2026-07-02
CSN6359 - 2 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CSN6744 - Jul 13, 16:35 UTCJul 14, 14:05 UTC21h 30m
2026-07-13 CSN3836 - Jul 13, 10:35 UTCJul 14, 06:05 UTC19h 30m
2026-07-13 CSN3836 - Jul 13, 05:25 UTCJul 13, 16:35 UTC11h 10m
2026-07-13 CSN3978 - Jul 13, 01:40 UTCJul 13, 01:55 UTC15m
2026-07-12 CSN3977 - Jul 12, 23:45 UTCJul 13, 00:01 UTC15m
2026-07-12 CSN6668 - Jul 12, 00:30 UTCJul 12, 12:35 UTC12h 5m
2026-07-11 CSN3836 - Jul 11, 02:05 UTCJul 11, 10:25 UTC8h 20m
2026-07-10 CSN3836 - Jul 10, 11:15 UTCJul 11, 10:25 UTC23h 10m
2026-07-09 CSN3978 - Jul 9, 03:05 UTCJul 9, 03:15 UTC10m
2026-07-08 CSN3835 - Jul 8, 05:25 UTCJul 8, 10:40 UTC5h 15m
2026-07-07 CSN6782 - Jul 7, 13:20 UTCJul 8, 10:40 UTC21h 20m
2026-07-07 CSN6782 - Jul 7, 09:15 UTCJul 8, 05:35 UTC20h 20m
2026-07-07 CSN3978 - Jul 7, 04:40 UTCJul 7, 04:50 UTC10m
2026-07-06 CSN6781 - Jul 6, 09:40 UTCJul 6, 15:40 UTC6h 0m
2026-07-05 CSN6624 - Jul 5, 09:25 UTCJul 6, 06:05 UTC20h 40m
2026-07-05 CSN8920 - Jul 5, 05:55 UTCJul 5, 09:30 UTC3h 35m
2026-07-04 CSN6732 - Jul 4, 04:45 UTCJul 4, 05:00 UTC15m
2026-07-03 CSN6624 - Jul 3, 06:35 UTCJul 3, 06:50 UTC15m
2026-07-02 CSN6623 - Jul 2, 09:20 UTCJul 3, 06:50 UTC21h 30m
2026-07-01 CSN8919 - Jul 1, 23:40 UTCJul 2, 10:15 UTC10h 35m
2026-07-01 CSN8919 - Jul 1, 07:25 UTCJul 2, 06:00 UTC22h 35m
2026-07-01 CSN8919 - Jul 1, 00:55 UTCJul 2, 00:10 UTC23h 15m
2026-06-30 CSN6758 - Jun 30, 15:30 UTCJun 30, 15:45 UTC15m
2026-06-30 CSN6757 - Jun 30, 13:55 UTCJun 30, 14:10 UTC15m
2026-06-29 CSN6758 - Jun 29, 15:39 UTCJun 29, 15:54 UTC15m
2026-06-29 CSN6757 - Jun 29, 13:54 UTCJun 29, 14:14 UTC20m
2026-06-28 CSN8276 - Jun 28, 05:29 UTCJun 28, 10:19 UTC4h 50m
2026-06-27 CSN6758 - Jun 27, 16:39 UTCJun 27, 16:49 UTC10m
2026-06-27 CSN6757 - Jun 27, 13:49 UTCJun 27, 14:05 UTC15m
2026-06-27 CSN6935 - Jun 27, 04:00 UTCJun 27, 10:54 UTC6h 55m
2026-06-26 CSN6758 - Jun 26, 16:14 UTCJun 26, 16:30 UTC15m
2026-06-26 CSN8276 WUH → SYX Jun 26, 02:24 UTCJun 26, 10:20 UTC7h 55m
2026-06-25 CSN6360 - Jun 25, 10:25 UTCJun 25, 10:35 UTC10m
2026-06-24 CSN6359 - Jun 24, 14:24 UTCJun 25, 06:44 UTC16h 20m
2026-06-24 CSN6359 - Jun 24, 09:09 UTCJun 25, 06:44 UTC21h 35m
2026-06-24 CSN6624 - Jun 24, 05:44 UTCJun 25, 01:54 UTC20h 10m
2026-06-23 CSN6624 - Jun 23, 14:35 UTCJun 24, 14:29 UTC23h 55m
2026-06-23 CSN8752 TFU → SYX Jun 23, 01:00 UTCJun 23, 14:39 UTC13h 40m
2026-06-22 CSN5786 WUH → SYX Jun 22, 14:40 UTCJun 22, 14:55 UTC15m
2026-06-21 CSN6624 - Jun 21, 13:39 UTCJun 22, 06:49 UTC17h 10m
2026-06-21 CSN6624 - Jun 21, 09:04 UTCJun 22, 06:49 UTC21h 45m
2026-06-20 CSN8919 SYX → XIY Jun 20, 23:55 UTCJun 21, 13:39 UTC13h 45m
2026-06-20 CSN8919 SYX → XIY Jun 20, 14:29 UTCJun 21, 09:15 UTC18h 45m
2026-06-19 CSN5786 WUH → SYX Jun 19, 06:44 UTCJun 19, 14:54 UTC8h 10m
2026-06-18 CSN8208 HGH → HAK Jun 18, 15:05 UTCJun 19, 09:55 UTC18h 49m
2026-06-18 CSN8208 HGH → HAK Jun 18, 10:50 UTCJun 19, 09:55 UTC23h 4m
2026-06-17 CSN6794 CAN → HAK Jun 17, 17:15 UTCJun 17, 17:30 UTC15m
2026-06-17 CSN6793 HAK → CAN Jun 17, 15:30 UTCJun 17, 15:40 UTC10m
2026-06-14 CSN6733 SYX → CAN Jun 14, 04:10 UTCJun 14, 04:20 UTC10m
2026-06-13 CSN6624 NKG → SYX Jun 13, 06:35 UTCJun 13, 07:20 UTC45m

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-8425 page for operator, model, and routing details .

Mode-S 780F7A frequently asked

What is Mode-S code 780F7A?
780F7A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8425.
Where is Mode-S 780F7A registered?
Mode-S code 780F7A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780F7A 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 780F7A, octal 36007572, decimal 7,868,282.
What flights does 780F7A operate?
Mode-S 780F7A has broadcast 20 distinct callsigns, including CSN3836, CSN6624, CSN8919, CSN6757, CSN3978.