sensors Mode-S transponder
7803E4
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6323 · AIRBUS A-320
- Hex
- 7803E4
- Octal
- 36001744
- Decimal
- 7,865,316
- Country
- CN
- Tail
- B-6323
- Type
- A320
- Flights observed
- 21
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 7803E4 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3960 | - | 2 | 2026-06-30 |
| CSC3959 | - | 2 | 2026-06-30 |
| CSC3939 | - | 2 | 2026-06-29 |
| CSC3905 | - | 2 | 2026-07-02 |
| CSC8834 | Sichuan Airlines | 1 | 2026-06-05 |
| CSC8833 | Sichuan Airlines | 1 | 2026-06-05 |
| CSC8832 | Sichuan Airlines | 1 | 2026-06-04 |
| CSC8710 | Sichuan Airlines | 1 | 2026-05-06 |
| CSC8709 | - | 1 | 2026-06-27 |
| CSC8704 | Sichuan Airlines | 1 | 2026-05-05 |
| CSC8471 | Sichuan Airlines | 1 | 2026-05-04 |
| CSC8451 | Sichuan Airlines | 1 | 2026-05-02 |
| CSC8237 | Sichuan Airlines | 1 | 2026-05-27 |
| CSC6796 | - | 1 | 2026-06-27 |
| CSC3906 | - | 1 | 2026-07-03 |
| CSC3348 | - | 1 | 2026-06-19 |
| CSC3264 | - | 1 | 2026-07-01 |
Recent flights last 21
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-03 | CSC3906 | - | Jul 3, 02:30 UTC | Jul 3, 02:50 UTC | 20m |
| 2026-07-02 | CSC3905 | - | Jul 2, 01:00 UTC | Jul 2, 15:20 UTC | 14h 20m |
| 2026-07-01 | CSC3264 | - | Jul 1, 08:10 UTC | Jul 2, 03:35 UTC | 19h 25m |
| 2026-06-30 | CSC3960 | - | Jun 30, 10:55 UTC | Jun 30, 11:10 UTC | 15m |
| 2026-06-30 | CSC3959 | - | Jun 30, 08:35 UTC | Jun 30, 09:10 UTC | 35m |
| 2026-06-29 | CSC3939 | - | Jun 29, 09:20 UTC | Jun 30, 01:50 UTC | 16h 30m |
| 2026-06-29 | CSC3939 | - | Jun 29, 02:25 UTC | Jun 29, 14:14 UTC | 11h 50m |
| 2026-06-28 | CSC3905 | - | Jun 28, 17:34 UTC | Jun 28, 18:00 UTC | 25m |
| 2026-06-27 | CSC6796 | - | Jun 27, 23:34 UTC | Jun 27, 23:45 UTC | 10m |
| 2026-06-27 | CSC8709 | - | Jun 27, 14:29 UTC | Jun 27, 15:24 UTC | 55m |
| 2026-06-19 | CSC3348 | - | Jun 19, 12:54 UTC | Jun 19, 13:14 UTC | 20m |
| 2026-06-05 | CSC8834 | PEK → CKG | Jun 5, 15:10 UTC | Jun 5, 15:35 UTC | 25m |
| 2026-06-05 | CSC8833 | CKG → PEK | Jun 5, 11:15 UTC | Jun 5, 11:25 UTC | 10m |
| 2026-06-04 | CSC8832 | PEK → CKG | Jun 4, 11:15 UTC | Jun 4, 11:40 UTC | 25m |
| 2026-05-27 | CSC8237 | CGO → HRB | May 27, 04:39 UTC | May 27, 04:55 UTC | 15m |
| 2026-05-17 | CSC3960 | HKG → TFU | May 17, 10:50 UTC | May 17, 11:01 UTC | 10m |
| 2026-05-17 | CSC3959 | TFU → HKG | May 17, 08:35 UTC | May 17, 09:15 UTC | 40m |
| 2026-05-06 | CSC8710 | SZX → CTU | May 6, 00:40 UTC | May 6, 00:50 UTC | 10m |
| 2026-05-05 | CSC8704 | SZX → CTU | May 5, 07:45 UTC | May 5, 08:00 UTC | 15m |
| 2026-05-04 | CSC8471 | CTU → HRB | May 4, 01:00 UTC | May 4, 01:20 UTC | 20m |
| 2026-05-02 | CSC8451 | CTU → CGQ | May 2, 01:15 UTC | May 2, 01:30 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-6323 page for operator, model, and routing details .