sensors Mode-S transponder
780DDA
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1677 · AIRBUS A-321
- Hex
- 780DDA
- Octal
- 36006732
- Decimal
- 7,867,866
- Country
- CN
- Tail
- B-1677
- Type
- A321
- Flights observed
- 43
- Distinct callsigns
- 18
- Country
- CN
- Last broadcast
- 58m ago
Last known position
Country allocation
The ICAO 24-bit address 780DDA 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3707 | Sichuan Airlines | 5 | 2026-04-20 |
| CSC3350 | Sichuan Airlines | 5 | 2026-05-05 |
| CSC3311 | - | 5 | 2026-07-16 |
| CSC3344 | - | 4 | 2026-07-07 |
| CSC3936 | Sichuan Airlines | 3 | 2026-05-26 |
| CSC3935 | Sichuan Airlines | 3 | 2026-05-26 |
| CSC3708 | Sichuan Airlines | 3 | 2026-04-20 |
| CSC3343 | - | 3 | 2026-07-17 |
| CSC8708 | Sichuan Airlines | 2 | 2026-05-19 |
| CSC8704 | Sichuan Airlines | 2 | 2026-05-11 |
| CSC8894 | Sichuan Airlines | 1 | 2026-05-09 |
| CSC8710 | Sichuan Airlines | 1 | 2026-05-11 |
| CSC6835 | Sichuan Airlines | 1 | 2026-06-08 |
| CSC6733 | Sichuan Airlines | 1 | 2026-06-05 |
| CSC6459 | - | 1 | 2026-04-23 |
| CSC3974 | Sichuan Airlines | 1 | 2026-06-04 |
| CSC3973 | Sichuan Airlines | 1 | 2026-06-04 |
| CSC3340 | - | 1 | 2026-06-30 |
Recent flights last 43
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CSC3343 | - | Jul 17, 05:04 UTC | Jul 18, 01:45 UTC | 20h 40m |
| 2026-07-16 | CSC3311 | - | Jul 16, 12:14 UTC | Jul 17, 05:10 UTC | 16h 55m |
| 2026-07-14 | CSC3311 | - | Jul 14, 12:30 UTC | Jul 15, 00:30 UTC | 11h 59m |
| 2026-07-14 | CSC3311 | - | Jul 14, 01:45 UTC | Jul 15, 00:30 UTC | 22h 44m |
| 2026-07-13 | CSC3343 | - | Jul 13, 13:40 UTC | Jul 14, 12:30 UTC | 22h 50m |
| 2026-07-07 | CSC3344 | - | Jul 7, 13:10 UTC | Jul 8, 12:30 UTC | 23h 20m |
| 2026-07-07 | CSC3343 | - | Jul 7, 01:30 UTC | Jul 7, 13:20 UTC | 11h 50m |
| 2026-07-05 | CSC3311 | - | Jul 5, 23:50 UTC | Jul 6, 00:25 UTC | 35m |
| 2026-06-30 | CSC3340 | - | Jun 30, 07:30 UTC | Jun 30, 07:55 UTC | 25m |
| 2026-06-27 | CSC3311 | - | Jun 27, 23:50 UTC | Jun 28, 04:35 UTC | 4h 45m |
| 2026-06-22 | CSC3344 | - | Jun 22, 01:40 UTC | Jun 22, 12:00 UTC | 10h 20m |
| 2026-06-20 | CSC3344 | WUH → HRB | Jun 20, 11:49 UTC | Jun 20, 12:04 UTC | 15m |
| 2026-06-19 | CSC3344 | WUH → HRB | Jun 19, 11:54 UTC | Jun 19, 12:09 UTC | 15m |
| 2026-06-08 | CSC6835 | TFU → TSN | Jun 8, 07:20 UTC | Jun 8, 07:30 UTC | 10m |
| 2026-06-05 | CSC6733 | CGO → CGQ | Jun 5, 06:50 UTC | Jun 5, 07:05 UTC | 15m |
| 2026-06-04 | CSC3974 | ICN → TFU | Jun 4, 06:15 UTC | Jun 4, 06:45 UTC | 30m |
| 2026-06-04 | CSC3973 | TFU → ICN | Jun 4, 03:55 UTC | Jun 4, 04:15 UTC | 20m |
| 2026-05-26 | CSC3936 | BKK → TFU | May 26, 11:20 UTC | May 26, 12:14 UTC | 55m |
| 2026-05-26 | CSC3935 | TFU → BKK | May 26, 08:34 UTC | May 26, 09:29 UTC | 55m |
| 2026-05-24 | CSC3936 | BKK → TFU | May 24, 11:15 UTC | May 24, 12:10 UTC | 55m |
| 2026-05-24 | CSC3935 | TFU → BKK | May 24, 08:30 UTC | May 24, 09:25 UTC | 55m |
| 2026-05-23 | CSC3936 | BKK → TFU | May 23, 11:10 UTC | May 24, 09:25 UTC | 22h 15m |
| 2026-05-23 | CSC3935 | TFU → BKK | May 23, 08:40 UTC | May 23, 09:35 UTC | 55m |
| 2026-05-19 | CSC8708 | SZX → CTU | May 19, 12:05 UTC | May 19, 12:15 UTC | 10m |
| 2026-05-18 | CSC8708 | SZX → CTU | May 18, 11:30 UTC | May 18, 11:40 UTC | 10m |
| 2026-05-11 | CSC8704 | SZX → CTU | May 11, 07:40 UTC | May 11, 07:50 UTC | 10m |
| 2026-05-11 | CSC8710 | SZX → CTU | May 11, 00:19 UTC | May 11, 00:30 UTC | 10m |
| 2026-05-10 | CSC8704 | SZX → CTU | May 10, 07:50 UTC | May 10, 08:05 UTC | 15m |
| 2026-05-09 | CSC8894 | PEK → CTU | May 9, 03:55 UTC | May 9, 04:15 UTC | 20m |
| 2026-05-05 | CSC3350 | XIY → HRB | May 5, 13:25 UTC | May 5, 13:45 UTC | 20m |
| 2026-05-04 | CSC3350 | XIY → HRB | May 4, 13:30 UTC | May 4, 13:45 UTC | 15m |
| 2026-05-01 | CSC3350 | XIY → HRB | May 1, 13:20 UTC | May 1, 13:35 UTC | 15m |
| 2026-04-26 | CSC3350 | XIY → HRB | Apr 26, 13:15 UTC | Apr 26, 13:30 UTC | 15m |
| 2026-04-23 | CSC3350 | XIY → HRB | Apr 23, 14:35 UTC | Apr 24, 13:50 UTC | 23h 14m |
| 2026-04-23 | CSC6459 | - | Apr 23, 06:25 UTC | Apr 23, 14:35 UTC | 8h 10m |
| 2026-04-20 | CSC3708 | ICN → DYG | Apr 20, 13:00 UTC | Apr 20, 13:15 UTC | 15m |
| 2026-04-20 | CSC3707 | DYG → ICN | Apr 20, 10:35 UTC | Apr 20, 10:55 UTC | 20m |
| 2026-04-19 | CSC3707 | DYG → ICN | Apr 19, 11:00 UTC | Apr 19, 11:10 UTC | 10m |
| 2026-04-18 | CSC3708 | ICN → DYG | Apr 18, 12:45 UTC | Apr 18, 13:00 UTC | 15m |
| 2026-04-18 | CSC3707 | DYG → ICN | Apr 18, 10:50 UTC | Apr 18, 11:05 UTC | 15m |
| 2026-04-17 | CSC3708 | ICN → DYG | Apr 17, 12:45 UTC | Apr 17, 12:55 UTC | 10m |
| 2026-04-17 | CSC3707 | DYG → ICN | Apr 17, 10:55 UTC | Apr 17, 11:05 UTC | 10m |
| 2026-04-16 | CSC3707 | DYG → ICN | Apr 16, 10:45 UTC | Apr 16, 10:59 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-1677 page for operator, model, and routing details .