sensors Mode-S transponder
781120
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8966 · AIRBUS A-321
- Hex
- 781120
- Octal
- 36010440
- Decimal
- 7,868,704
- Country
- CN
- Tail
- B-8966
- Type
- A321
- Flights observed
- 22
- Distinct callsigns
- 8
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 781120 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 8 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN6373 | China Southern Airlines | 5 | 2026-06-01 |
| CSN313 | China Southern Airlines | 5 | 2026-05-23 |
| CSN314 | China Southern Airlines | 4 | 2026-05-23 |
| CSN6509 | China Southern Airlines | 3 | 2026-05-13 |
| CSN6209 | China Southern Airlines | 2 | 2026-05-24 |
| CSN6543 | China Southern Airlines | 1 | 2026-05-31 |
| CSN6437 | China Southern Airlines | 1 | 2026-05-21 |
| CSN5872 | China Southern Airlines | 1 | 2026-05-14 |
Recent flights last 22
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | CSN6373 | CGQ → PVG | Jun 1, 04:10 UTC | Jun 1, 12:50 UTC | 8h 40m |
| 2026-05-31 | CSN6543 | CGQ → PVG | May 31, 12:55 UTC | Jun 1, 04:35 UTC | 15h 40m |
| 2026-05-29 | CSN6373 | CGQ → PVG | May 29, 04:50 UTC | May 29, 13:20 UTC | 8h 30m |
| 2026-05-28 | CSN6373 | CGQ → PVG | May 28, 12:25 UTC | May 29, 04:50 UTC | 16h 25m |
| 2026-05-24 | CSN6209 | HRB → PVG | May 24, 03:50 UTC | May 24, 04:25 UTC | 35m |
| 2026-05-23 | CSN314 | ICN → PVG | May 23, 04:05 UTC | May 24, 03:55 UTC | 23h 50m |
| 2026-05-23 | CSN314 | ICN → PVG | May 23, 03:55 UTC | May 23, 04:20 UTC | 25m |
| 2026-05-23 | CSN313 | PVG → ICN | May 23, 01:35 UTC | May 23, 02:05 UTC | 30m |
| 2026-05-21 | CSN6437 | SYX → HGH | May 21, 12:45 UTC | May 21, 13:30 UTC | 45m |
| 2026-05-20 | CSN314 | ICN → PVG | May 20, 03:50 UTC | May 20, 12:55 UTC | 9h 6m |
| 2026-05-19 | CSN313 | PVG → ICN | May 19, 12:55 UTC | May 20, 02:10 UTC | 13h 15m |
| 2026-05-19 | CSN313 | PVG → ICN | May 19, 04:35 UTC | May 20, 02:10 UTC | 21h 35m |
| 2026-05-19 | CSN313 | PVG → ICN | May 19, 04:00 UTC | May 20, 02:00 UTC | 22h 0m |
| 2026-05-15 | CSN6373 | CGQ → PVG | May 15, 04:15 UTC | May 15, 13:00 UTC | 8h 45m |
| 2026-05-14 | CSN5872 | PVG → CGQ | May 14, 10:50 UTC | May 15, 04:45 UTC | 17h 55m |
| 2026-05-13 | CSN6509 | SHE → PVG | May 13, 12:05 UTC | May 14, 11:15 UTC | 23h 10m |
| 2026-05-12 | CSN6509 | SHE → PVG | May 12, 14:20 UTC | May 12, 14:40 UTC | 20m |
| 2026-05-11 | CSN6509 | SHE → PVG | May 11, 04:00 UTC | May 11, 13:45 UTC | 9h 45m |
| 2026-05-01 | CSN6373 | CGQ → PVG | May 1, 12:30 UTC | May 1, 13:05 UTC | 35m |
| 2026-04-24 | CSN6209 | HRB → PVG | Apr 24, 03:40 UTC | Apr 24, 12:55 UTC | 9h 15m |
| 2026-04-19 | CSN314 | ICN → PVG | Apr 19, 03:50 UTC | Apr 19, 12:55 UTC | 9h 5m |
| 2026-04-18 | CSN313 | PVG → ICN | Apr 18, 12:30 UTC | Apr 19, 02:25 UTC | 13h 55m |
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-8966 page for operator, model, and routing details .