sensors Mode-S transponder
780DDF
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1661 · AIRBUS A-320
- Hex
- 780DDF
- Octal
- 36006737
- Decimal
- 7,867,871
- Country
- CN
- Tail
- B-1661
- Type
- A320
- Flights observed
- 25
- Distinct callsigns
- 8
- Country
- CN
- Last broadcast
- 14h ago
Last known position
Country allocation
The ICAO 24-bit address 780DDF 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 8 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3307 | - | 12 | 2026-05-02 |
| CSC3348 | Sichuan Airlines | 3 | 2026-04-23 |
| CSC8710 | Sichuan Airlines | 2 | 2026-05-19 |
| CSC8706 | Sichuan Airlines | 2 | 2026-05-24 |
| CSC8704 | Sichuan Airlines | 2 | 2026-05-18 |
| CSC3308 | - | 2 | 2026-04-28 |
| CSC3350 | Sichuan Airlines | 1 | 2026-04-25 |
| CSC3344 | Sichuan Airlines | 1 | 2026-06-02 |
Recent flights last 25
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | CSC3344 | WUH → HRB | Jun 2, 11:50 UTC | Jun 2, 12:05 UTC | 15m |
| 2026-05-24 | CSC8706 | SZX → CTU | May 24, 08:50 UTC | May 24, 09:00 UTC | 10m |
| 2026-05-19 | CSC8710 | SZX → CTU | May 19, 00:30 UTC | May 19, 00:40 UTC | 10m |
| 2026-05-18 | CSC8704 | SZX → CTU | May 18, 07:35 UTC | May 18, 07:45 UTC | 10m |
| 2026-05-17 | CSC8710 | SZX → CTU | May 17, 00:20 UTC | May 17, 00:35 UTC | 15m |
| 2026-05-16 | CSC8704 | SZX → CTU | May 16, 09:35 UTC | May 16, 09:45 UTC | 10m |
| 2026-05-14 | CSC8706 | SZX → CTU | May 14, 11:25 UTC | May 14, 11:35 UTC | 10m |
| 2026-05-02 | CSC3307 | - | May 2, 00:15 UTC | May 2, 05:20 UTC | 5h 6m |
| 2026-04-28 | CSC3308 | - | Apr 28, 08:00 UTC | Apr 29, 02:40 UTC | 18h 40m |
| 2026-04-28 | CSC3307 | - | Apr 28, 05:05 UTC | Apr 29, 02:40 UTC | 21h 35m |
| 2026-04-28 | CSC3307 | - | Apr 28, 00:00 UTC | Apr 28, 08:20 UTC | 8h 20m |
| 2026-04-27 | CSC3307 | - | Apr 27, 10:35 UTC | Apr 28, 08:20 UTC | 21h 45m |
| 2026-04-27 | CSC3307 | - | Apr 27, 00:55 UTC | Apr 27, 05:30 UTC | 4h 35m |
| 2026-04-26 | CSC3307 | - | Apr 26, 00:50 UTC | Apr 26, 08:15 UTC | 7h 25m |
| 2026-04-25 | CSC3350 | XIY → HRB | Apr 25, 13:10 UTC | Apr 26, 00:40 UTC | 11h 30m |
| 2026-04-24 | CSC3307 | - | Apr 24, 04:05 UTC | Apr 24, 11:35 UTC | 7h 30m |
| 2026-04-23 | CSC3348 | CGO → HRB | Apr 23, 13:00 UTC | Apr 24, 00:55 UTC | 11h 55m |
| 2026-04-20 | CSC3307 | - | Apr 20, 04:55 UTC | Apr 20, 05:20 UTC | 25m |
| 2026-04-19 | CSC3348 | - | Apr 19, 12:50 UTC | Apr 20, 00:25 UTC | 11h 35m |
| 2026-04-17 | CSC3348 | - | Apr 17, 14:05 UTC | Apr 18, 13:05 UTC | 23h 0m |
| 2026-04-17 | CSC3307 | - | Apr 17, 04:25 UTC | Apr 17, 05:15 UTC | 51m |
| 2026-04-17 | CSC3307 | - | Apr 17, 00:10 UTC | Apr 17, 00:44 UTC | 35m |
| 2026-04-15 | CSC3307 | - | Apr 15, 05:00 UTC | Apr 15, 05:20 UTC | 20m |
| 2026-04-13 | CSC3308 | - | Apr 13, 09:05 UTC | Apr 13, 09:15 UTC | 10m |
| 2026-04-13 | CSC3307 | - | Apr 13, 06:10 UTC | Apr 13, 06:40 UTC | 30m |
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-1661 page for operator, model, and routing details .