sensors Mode-S transponder
780809
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6836 · AIRBUS A-321
- Hex
- 780809
- Octal
- 36004011
- Decimal
- 7,866,377
- Country
- CN
- Tail
- B-6836
- Type
- A321
- Flights observed
- 33
- Distinct callsigns
- 16
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 780809 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 |
|---|---|---|---|
| CSC3707 | Sichuan Airlines | 6 | 2026-05-20 |
| CSC3708 | Sichuan Airlines | 5 | 2026-05-20 |
| CSC3912 | Sichuan Airlines | 3 | 2026-06-01 |
| CSC8708 | Sichuan Airlines | 2 | 2026-04-21 |
| CSC8707 | Sichuan Airlines | 2 | 2026-04-21 |
| CSC3974 | Sichuan Airlines | 2 | 2026-06-02 |
| CSC3973 | Sichuan Airlines | 2 | 2026-06-02 |
| CSC3932 | Sichuan Airlines | 2 | 2026-05-28 |
| CSC3911 | Sichuan Airlines | 2 | 2026-05-31 |
| CSC8923 | Sichuan Airlines | 1 | 2026-04-16 |
| CSC8709 | Sichuan Airlines | 1 | 2026-05-08 |
| CSC8706 | Sichuan Airlines | 1 | 2026-04-15 |
| CSC8704 | Sichuan Airlines | 1 | 2026-05-08 |
| CSC8471 | Sichuan Airlines | 1 | 2026-04-20 |
| CSC6796 | Sichuan Airlines | 1 | 2026-05-08 |
| CSC3931 | Sichuan Airlines | 1 | 2026-05-27 |
Recent flights last 33
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | CSC3974 | ICN → TFU | Jun 2, 06:20 UTC | Jun 2, 06:40 UTC | 20m |
| 2026-06-02 | CSC3973 | TFU → ICN | Jun 2, 04:00 UTC | Jun 2, 04:20 UTC | 20m |
| 2026-06-01 | CSC3912 | PEN → TFU | Jun 1, 14:00 UTC | Jun 1, 19:20 UTC | 5h 20m |
| 2026-05-31 | CSC3912 | PEN → TFU | May 31, 18:20 UTC | Jun 1, 18:15 UTC | 23h 55m |
| 2026-05-31 | CSC3912 | PEN → TFU | May 31, 18:05 UTC | Jun 1, 15:10 UTC | 21h 5m |
| 2026-05-31 | CSC3911 | TFU → PEN | May 31, 13:55 UTC | May 31, 15:50 UTC | 1h 55m |
| 2026-05-28 | CSC3932 | HKT → TFU | May 28, 02:25 UTC | May 28, 14:20 UTC | 11h 55m |
| 2026-05-27 | CSC3931 | TFU → HKT | May 27, 13:05 UTC | May 28, 10:20 UTC | 21h 15m |
| 2026-05-26 | CSC3974 | ICN → TFU | May 26, 06:10 UTC | May 26, 06:25 UTC | 15m |
| 2026-05-26 | CSC3973 | TFU → ICN | May 26, 03:55 UTC | May 26, 04:15 UTC | 20m |
| 2026-05-25 | CSC3911 | TFU → PEN | May 25, 13:45 UTC | May 26, 03:00 UTC | 13h 15m |
| 2026-05-22 | CSC3932 | HKT → TFU | May 22, 08:55 UTC | May 22, 14:00 UTC | 5h 5m |
| 2026-05-20 | CSC3708 | ICN → DYG | May 20, 20:35 UTC | May 20, 21:05 UTC | 30m |
| 2026-05-20 | CSC3707 | DYG → ICN | May 20, 18:45 UTC | May 20, 19:10 UTC | 25m |
| 2026-05-19 | CSC3708 | ICN → DYG | May 19, 12:40 UTC | May 19, 13:00 UTC | 20m |
| 2026-05-19 | CSC3707 | DYG → ICN | May 19, 10:50 UTC | May 19, 10:55 UTC | 5m |
| 2026-05-19 | CSC3707 | DYG → ICN | May 19, 10:25 UTC | May 19, 10:45 UTC | 20m |
| 2026-05-18 | CSC3708 | ICN → DYG | May 18, 12:35 UTC | May 18, 13:00 UTC | 25m |
| 2026-05-18 | CSC3707 | DYG → ICN | May 18, 10:25 UTC | May 18, 10:45 UTC | 20m |
| 2026-05-17 | CSC3708 | ICN → DYG | May 17, 12:35 UTC | May 17, 12:55 UTC | 20m |
| 2026-05-17 | CSC3707 | DYG → ICN | May 17, 10:35 UTC | May 17, 10:55 UTC | 20m |
| 2026-05-16 | CSC3708 | ICN → DYG | May 16, 12:40 UTC | May 16, 13:01 UTC | 20m |
| 2026-05-16 | CSC3707 | DYG → ICN | May 16, 10:31 UTC | May 16, 10:55 UTC | 25m |
| 2026-05-08 | CSC6796 | SZX → TFU | May 8, 23:15 UTC | May 8, 23:30 UTC | 15m |
| 2026-05-08 | CSC8709 | CTU → SZX | May 8, 13:25 UTC | May 8, 13:35 UTC | 10m |
| 2026-05-08 | CSC8704 | SZX → CTU | May 8, 07:50 UTC | May 8, 08:05 UTC | 15m |
| 2026-04-21 | CSC8708 | SZX → CTU | Apr 21, 11:35 UTC | Apr 21, 11:45 UTC | 10m |
| 2026-04-21 | CSC8707 | CTU → SZX | Apr 21, 09:45 UTC | Apr 21, 10:00 UTC | 15m |
| 2026-04-20 | CSC8471 | CTU → HRB | Apr 20, 01:30 UTC | Apr 20, 01:40 UTC | 10m |
| 2026-04-19 | CSC8708 | SZX → CTU | Apr 19, 11:55 UTC | Apr 19, 12:05 UTC | 10m |
| 2026-04-19 | CSC8707 | CTU → SZX | Apr 19, 09:35 UTC | Apr 19, 09:45 UTC | 10m |
| 2026-04-16 | CSC8923 | CTU → XMN | Apr 16, 02:04 UTC | Apr 16, 02:15 UTC | 10m |
| 2026-04-15 | CSC8706 | SZX → CTU | Apr 15, 09:05 UTC | Apr 15, 09:25 UTC | 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-6836 page for operator, model, and routing details .