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
- 66
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1d 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3244 | - | 7 | 2026-07-04 |
| CSC3343 | Sichuan Airlines | 6 | 2026-05-28 |
| CSC3911 | Sichuan Airlines | 5 | 2026-06-03 |
| CSC3243 | - | 5 | 2026-07-04 |
| CSC6796 | - | 4 | 2026-06-24 |
| CSC6880 | - | 3 | 2026-06-27 |
| CSC3973 | Sichuan Airlines | 3 | 2026-06-11 |
| CSC3904 | Sichuan Airlines | 3 | 2026-06-12 |
| CSC3903 | Sichuan Airlines | 3 | 2026-06-11 |
| CSC3708 | Sichuan Airlines | 3 | 2026-05-11 |
| CSC3344 | Sichuan Airlines | 3 | 2026-05-27 |
| CSC6788 | Sichuan Airlines | 2 | 2026-05-02 |
| CSC6727 | - | 2 | 2026-06-28 |
| CSC3974 | Sichuan Airlines | 2 | 2026-06-11 |
| CSC3311 | - | 2 | 2026-07-16 |
| 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 |
| CSC6879 | Sichuan Airlines | 1 | 2026-05-06 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-16 | CSC3311 | - | Jul 16, 09:25 UTC | Jul 17, 05:25 UTC | 20h 0m |
| 2026-07-15 | CSC3311 | - | Jul 15, 12:35 UTC | Jul 16, 09:55 UTC | 21h 20m |
| 2026-07-12 | - | - | Jul 12, 23:40 UTC | Jul 13, 05:05 UTC | 5h 25m |
| 2026-07-11 | CSC3248 | - | Jul 11, 00:40 UTC | Jul 11, 13:10 UTC | 12h 30m |
| 2026-07-07 | CSC6795 | - | Jul 7, 19:00 UTC | Jul 7, 19:15 UTC | 15m |
| 2026-07-04 | CSC3244 | - | Jul 4, 11:15 UTC | Jul 4, 11:30 UTC | 15m |
| 2026-07-04 | CSC3243 | - | Jul 4, 08:15 UTC | Jul 4, 08:30 UTC | 15m |
| 2026-07-03 | CSC3244 | - | Jul 3, 09:55 UTC | Jul 3, 10:10 UTC | 15m |
| 2026-07-02 | CSC3243 | - | Jul 2, 16:20 UTC | Jul 3, 06:45 UTC | 14h 25m |
| 2026-07-02 | CSC3244 | - | Jul 2, 11:15 UTC | Jul 2, 11:30 UTC | 15m |
| 2026-07-01 | CSC3243 | - | Jul 1, 14:00 UTC | Jul 2, 08:25 UTC | 18h 25m |
| 2026-07-01 | CSC3244 | - | Jul 1, 09:40 UTC | Jul 1, 09:55 UTC | 15m |
| 2026-07-01 | CSC3243 | - | Jul 1, 01:50 UTC | Jul 1, 06:25 UTC | 4h 35m |
| 2026-06-30 | CSC3244 | - | Jun 30, 16:55 UTC | Jun 30, 17:15 UTC | 20m |
| 2026-06-30 | CSC3244 | - | Jun 30, 11:20 UTC | Jun 30, 11:30 UTC | 10m |
| 2026-06-29 | CSC3243 | - | Jun 29, 14:25 UTC | Jun 30, 08:40 UTC | 18h 16m |
| 2026-06-29 | CSC3244 | - | Jun 29, 09:14 UTC | Jun 29, 09:34 UTC | 20m |
| 2026-06-28 | CSC6727 | - | Jun 28, 15:05 UTC | Jun 29, 06:29 UTC | 15h 25m |
| 2026-06-28 | CSC6727 | - | Jun 28, 00:30 UTC | Jun 28, 15:34 UTC | 15h 5m |
| 2026-06-27 | CSC6880 | - | Jun 27, 00:39 UTC | Jun 27, 01:00 UTC | 20m |
| 2026-06-26 | CSC6880 | - | Jun 26, 00:35 UTC | Jun 26, 00:55 UTC | 20m |
| 2026-06-24 | CSC6796 | - | Jun 24, 22:49 UTC | Jun 24, 23:00 UTC | 10m |
| 2026-06-13 | CSC3906 | HAN → TFU | Jun 13, 02:25 UTC | Jun 13, 02:40 UTC | 15m |
| 2026-06-12 | CSC3904 | SGN → TFU | Jun 12, 02:25 UTC | Jun 12, 15:00 UTC | 12h 35m |
| 2026-06-11 | CSC3903 | TFU → SGN | Jun 11, 13:30 UTC | Jun 12, 03:00 UTC | 13h 31m |
| 2026-06-11 | CSC3974 | ICN → TFU | Jun 11, 06:20 UTC | Jun 11, 06:40 UTC | 20m |
| 2026-06-11 | CSC3973 | TFU → ICN | Jun 11, 04:05 UTC | Jun 11, 04:30 UTC | 25m |
| 2026-06-09 | CSC3904 | SGN → TFU | Jun 9, 13:05 UTC | Jun 10, 03:15 UTC | 14h 10m |
| 2026-06-09 | CSC3904 | SGN → TFU | Jun 9, 06:00 UTC | Jun 10, 03:15 UTC | 21h 15m |
| 2026-06-09 | CSC3973 | TFU → ICN | Jun 9, 03:55 UTC | Jun 9, 04:15 UTC | 20m |
| 2026-06-05 | CSC3903 | TFU → SGN | Jun 5, 13:05 UTC | Jun 6, 02:55 UTC | 13h 50m |
| 2026-06-05 | CSC3903 | TFU → SGN | Jun 5, 00:40 UTC | Jun 5, 13:45 UTC | 13h 5m |
| 2026-06-03 | CSC3912 | PEN → TFU | Jun 3, 17:40 UTC | Jun 3, 19:35 UTC | 1h 55m |
| 2026-06-03 | CSC3911 | TFU → PEN | Jun 3, 15:30 UTC | Jun 3, 15:50 UTC | 20m |
| 2026-06-03 | CSC3911 | TFU → PEN | Jun 3, 13:55 UTC | Jun 3, 15:00 UTC | 1h 5m |
| 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 |
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 .