Apparatus

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sensors Mode-S transponder

78109A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8675 · AIRBUS A-321

Hex
78109A
Octal
36010232
Decimal
7,868,570
Country
CN
Tail
B-8675
Type
A321
No current signal · last broadcast 58m ago
Flights observed
42
Distinct callsigns
20
Country
CN
Last broadcast
58m ago

Last known position

Most recent position reported by Mode-S 78109A.

Country allocation

The ICAO 24-bit address 78109A 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
CSN5120 China Southern Airlines 3 2026-05-21
CSN5119 China Southern Airlines 3 2026-05-21
CSN3516 China Southern Airlines 3 2026-05-22
CSN8993 China Southern Airlines 2 2026-05-19
CSN8208 China Southern Airlines 2 2026-04-30
CSN6794 China Southern Airlines 2 2026-04-27
CSN6786 China Southern Airlines 2 2026-05-21
CSN6778 China Southern Airlines 2 2026-04-29
CSN6766 China Southern Airlines 2 2026-05-05
CSN5457 China Southern Airlines 2 2026-05-19
CSN3565 China Southern Airlines 2 2026-05-17
CSN3271 China Southern Airlines 2 2026-04-27
CSN6793 China Southern Airlines 1 2026-04-26
CSN6792 China Southern Airlines 1 2026-04-26
CSN6776 China Southern Airlines 1 2026-04-24
CSN6774 China Southern Airlines 1 2026-05-03
CSN6725 China Southern Airlines 1 2026-04-28
CSN6700 China Southern Airlines 1 2026-05-30
CSN6443 China Southern Airlines 1 2026-05-19
CSN5919 China Southern Airlines 1 2026-05-13

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN6700 KMG → SYX May 30, 00:00 UTCMay 30, 04:30 UTC4h 30m
2026-05-29 CSN3836 PVG → SYX May 29, 05:15 UTCMay 29, 11:25 UTC6h 10m
2026-05-22 CSN3516 PVG → HAK May 22, 01:25 UTCMay 22, 06:55 UTC5h 30m
2026-05-21 CSN5120 HAK → SZX May 21, 12:50 UTCMay 21, 13:15 UTC25m
2026-05-21 CSN5119 SZX → HAK May 21, 09:30 UTCMay 21, 09:45 UTC15m
2026-05-21 CSN6786 CAN → HAK May 21, 03:50 UTCMay 21, 04:05 UTC15m
2026-05-19 CSN6443 SZX → HAK May 19, 23:05 UTCMay 19, 23:15 UTC10m
2026-05-19 CSN5458 WUH → SZX May 19, 14:55 UTCMay 19, 15:10 UTC15m
2026-05-19 CSN5457 SZX → WUH May 19, 10:30 UTCMay 19, 10:45 UTC15m
2026-05-19 CSN8993 SZX → CTU May 19, 01:35 UTCMay 19, 01:45 UTC10m
2026-05-18 CSN5457 SZX → WUH May 18, 08:01 UTCMay 18, 08:10 UTC10m
2026-05-18 CSN3465 SZX → CKG May 18, 00:20 UTCMay 18, 00:35 UTC15m
2026-05-17 CSN3565 SZX → HFE May 17, 01:15 UTCMay 17, 01:25 UTC10m
2026-05-16 CSN8993 SZX → CTU May 16, 03:25 UTCMay 16, 03:35 UTC10m
2026-05-14 CSN5120 HAK → SZX May 14, 08:50 UTCMay 14, 09:05 UTC15m
2026-05-13 CSN5919 SZX → CKG May 13, 09:10 UTCMay 13, 09:25 UTC15m
2026-05-13 CSN5119 SZX → HAK May 13, 06:30 UTCMay 13, 06:50 UTC20m
2026-05-05 CSN6766 PVG → HAK May 5, 11:35 UTCMay 5, 16:55 UTC5h 20m
2026-05-03 CSN6774 CAN → HAK May 3, 02:15 UTCMay 3, 02:25 UTC10m
2026-05-02 CSN6766 PVG → HAK May 2, 09:40 UTCMay 2, 15:20 UTC5h 40m
2026-05-01 CSN5624 HGH → HAK May 1, 07:45 UTCMay 1, 12:35 UTC4h 50m
2026-04-30 CSN8208 HGH → HAK Apr 30, 14:40 UTCMay 1, 12:35 UTC21h 55m
2026-04-30 CSN8208 HGH → HAK Apr 30, 09:45 UTCMay 1, 07:55 UTC22h 10m
2026-04-29 CSN6778 XIY → HAK Apr 29, 11:05 UTCApr 29, 11:20 UTC15m
2026-04-28 CSN6725 HAK → XIY Apr 28, 02:25 UTCApr 28, 07:40 UTC5h 15m
2026-04-27 CSN6794 CAN → HAK Apr 27, 15:35 UTCApr 27, 15:50 UTC15m
2026-04-27 CSN3271 SZX → CGO Apr 27, 08:00 UTCApr 27, 08:20 UTC20m
2026-04-27 CSN3565 SZX → HFE Apr 27, 02:00 UTCApr 27, 02:10 UTC10m
2026-04-26 CSN6793 HAK → CAN Apr 26, 13:50 UTCApr 26, 14:10 UTC20m
2026-04-26 CSN6792 CAN → HAK Apr 26, 11:00 UTCApr 26, 11:10 UTC10m
2026-04-25 CSN6778 XIY → HAK Apr 25, 08:55 UTCApr 25, 09:05 UTC10m
2026-04-24 CSN6776 CAN → HAK Apr 24, 22:50 UTCApr 24, 23:00 UTC10m
2026-04-18 CSN3516 PVG → HAK Apr 18, 06:40 UTCApr 18, 07:00 UTC20m
2026-04-18 CSN3515 HAK → PVG Apr 18, 01:00 UTCApr 18, 01:20 UTC20m
2026-04-17 CSN5120 HAK → SZX Apr 17, 14:00 UTCApr 17, 14:15 UTC15m
2026-04-17 CSN5119 SZX → HAK Apr 17, 12:20 UTCApr 17, 12:30 UTC10m
2026-04-15 CSN3516 PVG → HAK Apr 15, 06:45 UTCApr 15, 06:55 UTC10m
2026-04-14 CSN6794 - Apr 14, 15:40 UTCApr 14, 15:55 UTC15m
2026-04-14 CSN3272 - Apr 14, 13:25 UTCApr 14, 13:50 UTC25m
2026-04-14 CSN3271 - Apr 14, 08:05 UTCApr 14, 08:20 UTC15m
2026-04-14 CSN3466 - Apr 14, 06:05 UTCApr 14, 06:20 UTC15m
2026-04-13 CSN6786 CAN → HAK Apr 13, 04:05 UTCApr 13, 04:15 UTC10m

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-8675 page for operator, model, and routing details .

Mode-S 78109A frequently asked

What is Mode-S code 78109A?
78109A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8675.
Where is Mode-S 78109A registered?
Mode-S code 78109A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78109A broadcasting right now?
No active broadcast right now. Last signal was 58m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78109A, octal 36010232, decimal 7,868,570.
What flights does 78109A operate?
Mode-S 78109A has broadcast 20 distinct callsigns, including CSN5120, CSN5119, CSN3516, CSN8993, CSN8208.