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
- Flights observed
- 30
- Distinct callsigns
- 16
- Country
- CN
- Last broadcast
- 17h ago
Last known position
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 16 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN3836 | China Southern Airlines | 4 | 2026-06-02 |
| CSN6734 | China Southern Airlines | 3 | 2026-05-08 |
| CSN6732 | China Southern Airlines | 3 | 2026-05-24 |
| CSN6630 | China Southern Airlines | 3 | 2026-04-30 |
| CSN8276 | China Southern Airlines | 2 | 2026-05-30 |
| CSN6782 | China Southern Airlines | 2 | 2026-04-22 |
| CSN6781 | China Southern Airlines | 2 | 2026-05-27 |
| CSN6754 | China Southern Airlines | 2 | 2026-05-08 |
| CSN6668 | China Southern Airlines | 2 | 2026-06-01 |
| CSN6757 | China Southern Airlines | 1 | 2026-05-29 |
| CSN6744 | China Southern Airlines | 1 | 2026-04-15 |
| CSN6629 | China Southern Airlines | 1 | 2026-04-27 |
| CSN6360 | China Southern Airlines | 1 | 2026-05-03 |
| CSN6359 | China Southern Airlines | 1 | 2026-05-03 |
| CSN5786 | - | 1 | 2026-05-31 |
| CSN3835 | China Southern Airlines | 1 | 2026-04-16 |
Recent flights last 30
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | CSN3836 | PVG → SYX | Jun 2, 04:35 UTC | Jun 2, 10:40 UTC | 6h 5m |
| 2026-06-01 | CSN6668 | NKG → SYX | Jun 1, 12:10 UTC | Jun 2, 10:40 UTC | 22h 30m |
| 2026-06-01 | CSN6668 | NKG → SYX | Jun 1, 07:30 UTC | Jun 2, 05:15 UTC | 21h 45m |
| 2026-05-31 | CSN5786 | - | May 31, 01:11 UTC | May 31, 14:40 UTC | 13h 29m |
| 2026-05-30 | CSN8276 | WUH → SYX | May 30, 01:40 UTC | May 30, 10:10 UTC | 8h 30m |
| 2026-05-29 | CSN6757 | SYX → SZX | May 29, 16:45 UTC | May 29, 17:05 UTC | 20m |
| 2026-05-29 | CSN8276 | WUH → SYX | May 29, 02:10 UTC | May 29, 10:25 UTC | 8h 15m |
| 2026-05-27 | CSN6781 | SYX → PVG | May 27, 09:00 UTC | May 27, 14:30 UTC | 5h 30m |
| 2026-05-24 | CSN6732 | CAN → SYX | May 24, 02:10 UTC | May 24, 02:20 UTC | 10m |
| 2026-05-21 | CSN3836 | PVG → SYX | May 21, 10:40 UTC | May 21, 11:05 UTC | 25m |
| 2026-05-08 | CSN6734 | CAN → SYX | May 8, 16:00 UTC | May 9, 06:35 UTC | 14h 35m |
| 2026-05-08 | CSN6754 | PVG → SYX | May 8, 01:29 UTC | May 8, 07:09 UTC | 5h 40m |
| 2026-05-04 | CSN6754 | PVG → SYX | May 4, 15:55 UTC | May 5, 07:00 UTC | 15h 6m |
| 2026-05-04 | CSN3836 | PVG → SYX | May 4, 05:05 UTC | May 4, 10:45 UTC | 5h 40m |
| 2026-05-03 | CSN6360 | HRB → WUH | May 3, 10:20 UTC | May 3, 10:30 UTC | 10m |
| 2026-05-03 | CSN6359 | WUH → HRB | May 3, 06:25 UTC | May 3, 06:45 UTC | 20m |
| 2026-05-01 | CSN6781 | SYX → PVG | May 1, 09:05 UTC | May 1, 14:40 UTC | 5h 35m |
| 2026-04-30 | CSN6630 | CGQ → HGH | Apr 30, 12:35 UTC | May 1, 09:15 UTC | 20h 40m |
| 2026-04-30 | CSN6630 | CGQ → HGH | Apr 30, 07:25 UTC | Apr 30, 12:55 UTC | 5h 30m |
| 2026-04-29 | CSN6734 | CAN → SYX | Apr 29, 06:55 UTC | Apr 29, 07:10 UTC | 15m |
| 2026-04-28 | CSN6734 | CAN → SYX | Apr 28, 08:35 UTC | Apr 28, 08:45 UTC | 10m |
| 2026-04-27 | CSN6629 | SYX → HGH | Apr 27, 08:15 UTC | Apr 27, 13:40 UTC | 5h 25m |
| 2026-04-26 | CSN6732 | CAN → SYX | Apr 26, 02:20 UTC | Apr 26, 02:35 UTC | 15m |
| 2026-04-22 | CSN6782 | PVG → SYX | Apr 22, 02:20 UTC | Apr 22, 15:45 UTC | 13h 25m |
| 2026-04-20 | CSN6782 | PVG → SYX | Apr 20, 09:45 UTC | Apr 20, 14:50 UTC | 5h 5m |
| 2026-04-18 | CSN6732 | CAN → SYX | Apr 18, 03:35 UTC | Apr 18, 03:45 UTC | 10m |
| 2026-04-17 | CSN6630 | CGQ → HGH | Apr 17, 11:35 UTC | Apr 17, 12:35 UTC | 1h 0m |
| 2026-04-16 | CSN3836 | PVG → SYX | Apr 16, 15:30 UTC | Apr 16, 15:40 UTC | 10m |
| 2026-04-16 | CSN3835 | SYX → PVG | Apr 16, 05:09 UTC | Apr 16, 05:20 UTC | 10m |
| 2026-04-15 | CSN6744 | CAN → SYX | Apr 15, 10:40 UTC | Apr 15, 10:55 UTC | 15m |
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 .