sensors Mode-S transponder
7804D9
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6387 · AIRBUS A-321
- Hex
- 7804D9
- Octal
- 36002331
- Decimal
- 7,865,561
- Country
- CN
- Tail
- B-6387
- Type
- A321
- Flights observed
- 31
- Distinct callsigns
- 15
- Country
- CN
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 7804D9 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3343 | Sichuan Airlines | 6 | 2026-05-28 |
| CSC6796 | Sichuan Airlines | 3 | 2026-05-02 |
| CSC3911 | Sichuan Airlines | 3 | 2026-05-04 |
| CSC3708 | Sichuan Airlines | 3 | 2026-05-11 |
| CSC3344 | Sichuan Airlines | 3 | 2026-05-27 |
| CSC6788 | Sichuan Airlines | 2 | 2026-05-02 |
| CSC8894 | Sichuan Airlines | 1 | 2026-05-21 |
| CSC8706 | Sichuan Airlines | 1 | 2026-05-31 |
| CSC8704 | Sichuan Airlines | 1 | 2026-04-18 |
| CSC8703 | Sichuan Airlines | 1 | 2026-04-18 |
| CSC6880 | Sichuan Airlines | 1 | 2026-05-07 |
| CSC6879 | Sichuan Airlines | 1 | 2026-05-06 |
| CSC6461 | Sichuan Airlines | 1 | 2026-05-18 |
| CSC3974 | Sichuan Airlines | 1 | 2026-05-19 |
| CSC3973 | Sichuan Airlines | 1 | 2026-05-19 |
Recent flights last 31
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-31 | CSC8706 | SZX → CTU | May 31, 08:55 UTC | May 31, 09:10 UTC | 15m |
| 2026-05-28 | CSC3343 | HRB → WUH | May 28, 01:35 UTC | May 28, 12:10 UTC | 10h 35m |
| 2026-05-27 | CSC3344 | WUH → HRB | May 27, 11:45 UTC | May 28, 01:50 UTC | 14h 5m |
| 2026-05-27 | CSC3343 | HRB → WUH | May 27, 01:29 UTC | May 27, 12:00 UTC | 10h 30m |
| 2026-05-26 | CSC3343 | HRB → WUH | May 26, 11:50 UTC | May 27, 01:44 UTC | 13h 55m |
| 2026-05-26 | CSC3343 | HRB → WUH | May 26, 01:30 UTC | May 26, 12:00 UTC | 10h 30m |
| 2026-05-25 | CSC3344 | WUH → HRB | May 25, 12:20 UTC | May 26, 12:00 UTC | 23h 39m |
| 2026-05-25 | CSC3344 | WUH → HRB | May 25, 12:05 UTC | May 26, 01:44 UTC | 13h 40m |
| 2026-05-21 | CSC8894 | PEK → CTU | May 21, 04:00 UTC | May 21, 04:20 UTC | 20m |
| 2026-05-19 | CSC3974 | ICN → TFU | May 19, 06:25 UTC | May 19, 06:45 UTC | 20m |
| 2026-05-19 | CSC3973 | TFU → ICN | May 19, 04:10 UTC | May 19, 04:30 UTC | 20m |
| 2026-05-18 | CSC6461 | TFU → SHE | May 18, 07:40 UTC | May 19, 03:15 UTC | 19h 34m |
| 2026-05-11 | CSC3708 | ICN → DYG | May 11, 13:05 UTC | May 11, 13:20 UTC | 15m |
| 2026-05-11 | - | - | May 11, 11:00 UTC | May 11, 11:10 UTC | 10m |
| 2026-05-10 | CSC3708 | ICN → DYG | May 10, 12:59 UTC | May 10, 13:14 UTC | 15m |
| 2026-05-09 | CSC3708 | ICN → DYG | May 9, 12:55 UTC | May 9, 13:10 UTC | 15m |
| 2026-05-07 | CSC6880 | PEK → TFU | May 7, 00:35 UTC | May 7, 00:55 UTC | 20m |
| 2026-05-06 | CSC6879 | TFU → PEK | May 6, 14:40 UTC | May 6, 15:05 UTC | 25m |
| 2026-05-04 | CSC3911 | TFU → PEN | May 4, 14:35 UTC | May 5, 08:35 UTC | 18h 1m |
| 2026-05-04 | CSC3911 | TFU → PEN | May 4, 14:10 UTC | May 5, 08:35 UTC | 18h 26m |
| 2026-05-02 | CSC6796 | SZX → TFU | May 2, 23:50 UTC | May 3, 00:01 UTC | 10m |
| 2026-05-02 | CSC6788 | ZUH → TFU | May 2, 04:05 UTC | May 2, 04:15 UTC | 10m |
| 2026-05-01 | CSC3343 | HRB → WUH | May 1, 01:30 UTC | May 1, 01:40 UTC | 10m |
| 2026-04-29 | CSC3343 | HRB → WUH | Apr 29, 01:20 UTC | Apr 29, 12:45 UTC | 11h 26m |
| 2026-04-24 | CSC6788 | ZUH → TFU | Apr 24, 04:45 UTC | Apr 24, 05:00 UTC | 15m |
| 2026-04-20 | CSC6796 | SZX → TFU | Apr 20, 23:20 UTC | Apr 20, 23:40 UTC | 20m |
| 2026-04-19 | CSC3911 | TFU → PEN | Apr 19, 13:55 UTC | Apr 19, 19:15 UTC | 5h 20m |
| 2026-04-18 | CSC6796 | SZX → TFU | Apr 18, 23:15 UTC | Apr 18, 23:25 UTC | 10m |
| 2026-04-18 | - | - | Apr 18, 14:15 UTC | Apr 18, 14:25 UTC | 10m |
| 2026-04-18 | CSC8704 | SZX → CTU | Apr 18, 08:35 UTC | Apr 18, 08:50 UTC | 15m |
| 2026-04-18 | CSC8703 | CTU → SZX | Apr 18, 06:35 UTC | Apr 18, 06:45 UTC | 10m |
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-6387 page for operator, model, and routing details .