sensors Mode-S transponder
7811E4
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8685 · AIRBUS A-320
- Hex
- 7811E4
- Octal
- 36010744
- Decimal
- 7,868,900
- Country
- CN
- Tail
- B-8685
- Type
- A320
- Flights observed
- 35
- Distinct callsigns
- 19
- Country
- CN
- Last broadcast
- Jul 24, 11:05 UTC
Last known position
Country allocation
The ICAO 24-bit address 7811E4 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 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC8775 | Sichuan Airlines | 5 | 2026-06-20 |
| CSC8776 | Sichuan Airlines | 4 | 2026-06-20 |
| CSC3532 | - | 3 | 2026-07-06 |
| CSC3531 | - | 3 | 2026-07-07 |
| CSC3126 | - | 3 | 2026-07-06 |
| CSC3125 | - | 3 | 2026-07-05 |
| CSC3348 | Sichuan Airlines | 2 | 2026-05-03 |
| CSC8837 | - | 1 | 2026-07-07 |
| CSC8760 | Sichuan Airlines | 1 | 2026-06-28 |
| CSC8237 | - | 1 | 2026-07-10 |
| CSC6980 | - | 1 | 2026-06-23 |
| CSC6728 | Sichuan Airlines | 1 | 2026-06-21 |
| CSC6727 | Sichuan Airlines | 1 | 2026-06-21 |
| CSC3960 | Sichuan Airlines | 1 | 2026-07-24 |
| CSC3959 | Sichuan Airlines | 1 | 2026-07-24 |
| CSC3906 | - | 1 | 2026-06-27 |
| CSC3905 | Sichuan Airlines | 1 | 2026-06-26 |
| CSC3651 | - | 1 | 2026-06-15 |
| CSC3343 | Sichuan Airlines | 1 | 2026-05-02 |
Recent flights last 35
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | CSC3960 | HKG → TFU | Jul 24, 10:45 UTC | Jul 24, 11:05 UTC | 20m |
| 2026-07-24 | CSC3959 | TFU → HKG | Jul 24, 08:30 UTC | Jul 24, 09:10 UTC | 40m |
| 2026-07-10 | CSC8237 | - | Jul 10, 06:40 UTC | Jul 10, 07:00 UTC | 20m |
| 2026-07-07 | CSC8837 | - | Jul 7, 22:50 UTC | Jul 7, 23:10 UTC | 20m |
| 2026-07-07 | CSC3531 | - | Jul 7, 13:10 UTC | Jul 7, 13:40 UTC | 30m |
| 2026-07-06 | CSC3532 | - | Jul 6, 14:35 UTC | Jul 6, 14:55 UTC | 20m |
| 2026-07-06 | CSC3126 | - | Jul 6, 12:45 UTC | Jul 6, 13:05 UTC | 20m |
| 2026-07-05 | CSC3125 | - | Jul 5, 23:50 UTC | Jul 6, 00:15 UTC | 25m |
| 2026-07-05 | CSC3531 | - | Jul 5, 12:40 UTC | Jul 5, 13:05 UTC | 25m |
| 2026-07-04 | CSC3532 | - | Jul 4, 14:35 UTC | Jul 4, 14:55 UTC | 20m |
| 2026-07-04 | CSC3126 | - | Jul 4, 10:25 UTC | Jul 4, 10:40 UTC | 15m |
| 2026-07-03 | CSC3125 | - | Jul 3, 23:55 UTC | Jul 4, 00:20 UTC | 25m |
| 2026-07-03 | CSC3531 | - | Jul 3, 13:30 UTC | Jul 3, 14:05 UTC | 35m |
| 2026-07-02 | CSC3532 | - | Jul 2, 14:25 UTC | Jul 2, 14:45 UTC | 20m |
| 2026-07-02 | CSC3126 | - | Jul 2, 10:30 UTC | Jul 2, 10:55 UTC | 25m |
| 2026-07-01 | CSC3125 | - | Jul 1, 23:50 UTC | Jul 2, 00:15 UTC | 25m |
| 2026-06-28 | CSC8760 | SYX → CTU | Jun 28, 13:59 UTC | Jun 28, 14:14 UTC | 15m |
| 2026-06-27 | CSC3906 | - | Jun 27, 02:39 UTC | Jun 27, 14:09 UTC | 11h 30m |
| 2026-06-26 | CSC3905 | TFU → HAN | Jun 26, 14:44 UTC | Jun 26, 15:05 UTC | 20m |
| 2026-06-23 | CSC6980 | - | Jun 23, 11:45 UTC | Jun 23, 11:59 UTC | 15m |
| 2026-06-21 | CSC6728 | SYX → TFU | Jun 21, 23:55 UTC | Jun 22, 00:20 UTC | 25m |
| 2026-06-21 | CSC6727 | TFU → SYX | Jun 21, 13:44 UTC | Jun 21, 14:15 UTC | 30m |
| 2026-06-20 | CSC8776 | HAK → CTU | Jun 20, 05:29 UTC | Jun 20, 05:44 UTC | 15m |
| 2026-06-20 | CSC8775 | CTU → HAK | Jun 20, 03:04 UTC | Jun 20, 03:34 UTC | 30m |
| 2026-06-19 | CSC8776 | HAK → CTU | Jun 19, 05:30 UTC | Jun 20, 03:34 UTC | 22h 5m |
| 2026-06-19 | CSC8775 | CTU → HAK | Jun 19, 03:15 UTC | Jun 19, 03:39 UTC | 25m |
| 2026-06-17 | CSC8775 | CTU → HAK | Jun 17, 03:25 UTC | Jun 17, 05:50 UTC | 2h 25m |
| 2026-06-15 | CSC3651 | - | Jun 15, 02:50 UTC | Jun 15, 03:05 UTC | 15m |
| 2026-06-14 | CSC8776 | HAK → CTU | Jun 14, 05:25 UTC | Jun 14, 05:35 UTC | 10m |
| 2026-06-14 | CSC8775 | CTU → HAK | Jun 14, 03:15 UTC | Jun 14, 03:25 UTC | 10m |
| 2026-06-11 | CSC8776 | HAK → CTU | Jun 11, 05:15 UTC | Jun 11, 05:30 UTC | 15m |
| 2026-06-11 | CSC8775 | CTU → HAK | Jun 11, 03:05 UTC | Jun 11, 03:20 UTC | 15m |
| 2026-05-03 | CSC3348 | CGO → HRB | May 3, 13:00 UTC | May 3, 13:20 UTC | 20m |
| 2026-05-02 | CSC3343 | HRB → WUH | May 2, 01:30 UTC | May 2, 12:00 UTC | 10h 30m |
| 2026-05-01 | CSC3348 | CGO → HRB | May 1, 13:05 UTC | May 2, 12:00 UTC | 22h 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-8685 page for operator, model, and routing details .