Apparatus

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sensors Mode-S transponder

78109C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8677 · AIRBUS A-321

Hex
78109C
Octal
36010234
Decimal
7,868,572
Country
CN
Tail
B-8677
Type
A321
No current signal · last broadcast Jul 26, 12:50 UTC
Flights observed
118
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 12:50 UTC

Last known position

Most recent position reported by Mode-S 78109C.

Country allocation

The ICAO 24-bit address 78109C 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 China Southern Airlines 18 2026-07-23
CSN3836 China Southern Airlines 16 2026-07-24
CSN6630 - 7 2026-07-02
CSN6936 - 6 2026-07-05
CSN6732 - 6 2026-07-09
CSN6795 China Southern Airlines 5 2026-07-25
CSN6754 - 5 2026-07-13
CSN6734 - 5 2026-07-16
CSN6624 - 5 2026-07-04
CSN6796 China Southern Airlines 4 2026-07-26
CSN6744 - 4 2026-06-19
CSN6629 - 4 2026-06-30
CSN6623 - 3 2026-07-22
CSN8920 - 2 2026-06-26
CSN8752 China Southern Airlines 2 2026-06-18
CSN8276 China Southern Airlines 2 2026-05-30
CSN6781 China Southern Airlines 2 2026-05-27
CSN6757 China Southern Airlines 2 2026-07-24
CSN6712 - 2 2026-07-07
CSN6668 China Southern Airlines 2 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6796 KWE → SYX Jul 26, 00:30 UTCJul 26, 12:50 UTC12h 21m
2026-07-25 CSN6796 KWE → SYX Jul 25, 12:25 UTCJul 26, 04:20 UTC15h 55m
2026-07-25 CSN6795 SYX → KWE Jul 25, 04:25 UTCJul 26, 00:50 UTC20h 25m
2026-07-25 CSN6227 SYX → CKG Jul 25, 00:35 UTCJul 25, 12:30 UTC11h 55m
2026-07-24 CSN6758 - Jul 24, 16:10 UTCJul 24, 16:25 UTC15m
2026-07-24 CSN6757 SYX → SZX Jul 24, 14:45 UTCJul 24, 14:55 UTC10m
2026-07-24 CSN3836 PVG → SYX Jul 24, 05:30 UTCJul 24, 11:25 UTC5h 55m
2026-07-24 CSN3978 SZX → SYX Jul 24, 02:05 UTCJul 24, 02:25 UTC20m
2026-07-23 CSN3977 SYX → SZX Jul 23, 23:45 UTCJul 24, 00:05 UTC20m
2026-07-23 CSN6782 PVG → SYX Jul 23, 06:50 UTCJul 23, 16:45 UTC9h 55m
2026-07-22 CSN6623 - Jul 22, 11:10 UTCJul 23, 11:00 UTC23h 50m
2026-07-22 CSN6623 - Jul 22, 01:05 UTCJul 22, 12:00 UTC10h 55m
2026-07-21 CSN6782 - Jul 21, 15:05 UTCJul 22, 12:00 UTC20h 55m
2026-07-21 CSN6782 - Jul 21, 14:30 UTCJul 22, 12:00 UTC21h 30m
2026-07-21 CSN6782 - Jul 21, 09:55 UTCJul 22, 01:15 UTC15h 20m
2026-07-21 CSN6782 - Jul 21, 04:50 UTCJul 22, 01:15 UTC20h 25m
2026-07-20 CSN3836 - Jul 20, 06:30 UTCJul 20, 10:45 UTC4h 15m
2026-07-16 CSN6734 - Jul 16, 06:25 UTCJul 16, 09:55 UTC3h 30m
2026-07-15 CSN6190 - Jul 15, 06:55 UTCJul 15, 11:50 UTC4h 55m
2026-07-14 CSN6782 - Jul 14, 13:35 UTCJul 15, 11:50 UTC22h 14m
2026-07-14 CSN6782 - Jul 14, 09:35 UTCJul 15, 07:00 UTC21h 24m
2026-07-13 CSN6754 - Jul 13, 05:45 UTCJul 13, 10:15 UTC4h 30m
2026-07-12 CSN6754 - Jul 12, 14:50 UTCJul 13, 10:15 UTC19h 25m
2026-07-12 CSN6754 - Jul 12, 09:05 UTCJul 13, 06:55 UTC21h 50m
2026-07-11 - - Jul 11, 00:05 UTCJul 11, 11:45 UTC11h 40m
2026-07-10 CSN6782 - Jul 10, 15:05 UTCJul 11, 11:45 UTC20h 40m
2026-07-10 CSN6782 - Jul 10, 14:15 UTCJul 11, 11:45 UTC21h 30m
2026-07-10 CSN6782 - Jul 10, 06:50 UTCJul 11, 00:10 UTC17h 20m
2026-07-09 CSN6623 - Jul 9, 10:00 UTCJul 10, 06:55 UTC20h 55m
2026-07-09 CSN6732 - Jul 9, 02:35 UTCJul 9, 10:10 UTC7h 35m
2026-07-07 CSN6712 - Jul 7, 13:10 UTCJul 8, 08:40 UTC19h 30m
2026-07-07 CSN6712 - Jul 7, 10:20 UTCJul 8, 08:40 UTC22h 20m
2026-07-06 CSN6743 - Jul 6, 13:40 UTCJul 6, 13:50 UTC10m
2026-07-05 CSN6936 - Jul 5, 11:35 UTCJul 6, 08:15 UTC20h 40m
2026-07-04 CSN6936 XIY → SYX Jul 4, 14:45 UTCJul 5, 11:50 UTC21h 5m
2026-07-04 CSN6624 - Jul 4, 06:05 UTCJul 4, 14:45 UTC8h 40m
2026-07-03 CSN6624 - Jul 3, 13:40 UTCJul 4, 06:20 UTC16h 40m
2026-07-02 CSN6630 - Jul 2, 12:00 UTCJul 3, 04:40 UTC16h 40m
2026-07-02 CSN6630 - Jul 2, 07:10 UTCJul 3, 04:40 UTC21h 30m
2026-07-02 CSN6630 - Jul 2, 03:45 UTCJul 3, 00:20 UTC20h 35m
2026-07-02 CSN6795 - Jul 2, 00:25 UTCJul 2, 12:25 UTC12h 0m
2026-07-01 CSN6795 - Jul 1, 11:45 UTCJul 2, 07:20 UTC19h 35m
2026-07-01 CSN6795 - Jul 1, 07:05 UTCJul 2, 03:45 UTC20h 40m
2026-07-01 CSN6795 - Jul 1, 06:55 UTCJul 2, 03:45 UTC20h 50m
2026-06-30 CSN6629 - Jun 30, 10:15 UTCJul 1, 07:10 UTC20h 55m
2026-06-30 CSN6935 - Jun 30, 04:45 UTCJun 30, 10:20 UTC5h 35m
2026-06-28 CSN6936 XIY → SYX Jun 28, 15:05 UTCJun 29, 10:44 UTC19h 40m
2026-06-28 CSN6782 - Jun 28, 14:25 UTCJun 29, 10:44 UTC20h 20m
2026-06-28 CSN6782 - Jun 28, 11:09 UTCJun 29, 10:44 UTC23h 35m
2026-06-28 CSN6782 - Jun 28, 09:20 UTCJun 28, 15:40 UTC6h 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-8677 page for operator, model, and routing details .

Mode-S 78109C frequently asked

What is Mode-S code 78109C?
78109C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8677.
Where is Mode-S 78109C registered?
Mode-S code 78109C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78109C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78109C, octal 36010234, decimal 7,868,572.
What flights does 78109C operate?
Mode-S 78109C has broadcast 20 distinct callsigns, including CSN6782, CSN3836, CSN6630, CSN6936, CSN6732.