sensors Mode-S transponder
781C2D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-325J · AIRBUS A-350-900
- Hex
- 781C2D
- Octal
- 36016055
- Decimal
- 7,871,533
- Country
- CN
- Tail
- B-325J
- Type
- A359
- Flights observed
- 80
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 781C2D 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3887 | Sichuan Airlines | 23 | 2026-05-29 |
| CSC3837 | Sichuan Airlines | 10 | 2026-05-26 |
| CSC3838 | Sichuan Airlines | 9 | 2026-05-27 |
| CSC3815 | Sichuan Airlines | 9 | 2026-05-16 |
| CSC3804 | Sichuan Airlines | 6 | 2026-05-25 |
| CSC3803 | Sichuan Airlines | 6 | 2026-05-24 |
| CSC3816 | Sichuan Airlines | 5 | 2026-05-17 |
| CSC3888 | Sichuan Airlines | 3 | 2026-05-23 |
| CSC3860 | Sichuan Airlines | 3 | 2026-05-22 |
| CSC3896 | Sichuan Airlines | 2 | 2026-05-07 |
| CSC3895 | Sichuan Airlines | 2 | 2026-05-06 |
| CSC3859 | Sichuan Airlines | 2 | 2026-05-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CSC3887 | TFU → SVO | May 29, 12:50 UTC | May 29, 23:30 UTC | 10h 40m |
| 2026-05-27 | CSC3838 | LAX → TFU | May 27, 06:34 UTC | May 27, 19:35 UTC | 13h 1m |
| 2026-05-26 | CSC3837 | TFU → LAX | May 26, 17:20 UTC | May 27, 03:20 UTC | 10h 0m |
| 2026-05-25 | CSC3804 | MAD → TFU | May 25, 09:30 UTC | May 25, 17:45 UTC | 8h 15m |
| 2026-05-24 | CSC3803 | TFU → MAD | May 24, 21:30 UTC | May 25, 05:10 UTC | 7h 40m |
| 2026-05-23 | CSC3803 | TFU → MAD | May 23, 23:20 UTC | May 24, 23:15 UTC | 23h 55m |
| 2026-05-23 | CSC3888 | SVO → TFU | May 23, 21:55 UTC | May 23, 23:35 UTC | 1h 40m |
| 2026-05-23 | CSC3888 | SVO → TFU | May 23, 19:45 UTC | May 23, 20:20 UTC | 35m |
| 2026-05-23 | CSC3887 | TFU → SVO | May 23, 12:45 UTC | May 23, 15:40 UTC | 2h 55m |
| 2026-05-22 | CSC3887 | TFU → SVO | May 22, 17:40 UTC | May 23, 15:40 UTC | 21h 59m |
| 2026-05-22 | CSC3860 | YVR → TFU | May 22, 16:25 UTC | May 23, 15:15 UTC | 22h 50m |
| 2026-05-22 | CSC3860 | YVR → TFU | May 22, 07:50 UTC | May 22, 18:30 UTC | 10h 40m |
| 2026-05-21 | CSC3859 | TFU → YVR | May 21, 20:20 UTC | May 22, 05:00 UTC | 8h 40m |
| 2026-05-20 | CSC3838 | LAX → TFU | May 20, 06:20 UTC | May 20, 18:15 UTC | 11h 55m |
| 2026-05-19 | CSC3837 | TFU → LAX | May 19, 17:00 UTC | May 20, 03:15 UTC | 10h 15m |
| 2026-05-18 | CSC3837 | TFU → LAX | May 18, 20:45 UTC | May 19, 18:35 UTC | 21h 50m |
| 2026-05-18 | CSC3887 | TFU → SVO | May 18, 12:50 UTC | May 18, 21:00 UTC | 8h 9m |
| 2026-05-17 | CSC3887 | TFU → SVO | May 17, 23:20 UTC | May 18, 21:00 UTC | 21h 39m |
| 2026-05-17 | CSC3887 | TFU → SVO | May 17, 20:50 UTC | May 18, 15:55 UTC | 19h 5m |
| 2026-05-17 | CSC3816 | LED → TFU | May 17, 16:01 UTC | May 18, 14:40 UTC | 22h 40m |
| 2026-05-17 | CSC3816 | LED → TFU | May 17, 13:20 UTC | May 18, 13:15 UTC | 23h 55m |
| 2026-05-17 | CSC3816 | LED → TFU | May 17, 13:05 UTC | May 17, 23:45 UTC | 10h 40m |
| 2026-05-16 | CSC3816 | LED → TFU | May 16, 23:20 UTC | May 17, 21:15 UTC | 21h 56m |
| 2026-05-16 | CSC3815 | TFU → LED | May 16, 15:31 UTC | May 17, 13:35 UTC | 22h 5m |
| 2026-05-16 | CSC3815 | TFU → LED | May 16, 12:50 UTC | May 16, 23:45 UTC | 10h 55m |
| 2026-05-15 | CSC3815 | TFU → LED | May 15, 21:45 UTC | May 16, 15:45 UTC | 18h 1m |
| 2026-05-15 | CSC3815 | TFU → LED | May 15, 20:50 UTC | May 16, 15:45 UTC | 18h 56m |
| 2026-05-15 | CSC3815 | TFU → LED | May 15, 14:20 UTC | May 16, 13:15 UTC | 22h 55m |
| 2026-05-15 | CSC3887 | TFU → SVO | May 15, 12:40 UTC | May 15, 21:50 UTC | 9h 9m |
| 2026-05-15 | CSC3887 | TFU → SVO | May 15, 00:10 UTC | May 15, 21:50 UTC | 21h 39m |
| 2026-05-14 | CSC3887 | TFU → SVO | May 14, 15:30 UTC | May 15, 14:30 UTC | 23h 0m |
| 2026-05-14 | CSC3887 | TFU → SVO | May 14, 13:20 UTC | May 15, 13:05 UTC | 23h 45m |
| 2026-05-14 | CSC3815 | TFU → LED | May 14, 12:50 UTC | May 15, 00:30 UTC | 11h 40m |
| 2026-05-13 | CSC3838 | LAX → TFU | May 13, 16:35 UTC | May 14, 13:25 UTC | 20h 50m |
| 2026-05-13 | CSC3838 | LAX → TFU | May 13, 06:25 UTC | May 13, 18:25 UTC | 12h 0m |
| 2026-05-12 | CSC3837 | TFU → LAX | May 12, 17:05 UTC | May 13, 03:00 UTC | 9h 55m |
| 2026-05-11 | CSC3837 | TFU → LAX | May 11, 21:00 UTC | May 12, 18:30 UTC | 21h 30m |
| 2026-05-11 | CSC3887 | TFU → SVO | May 11, 12:35 UTC | May 11, 21:10 UTC | 8h 35m |
| 2026-05-10 | CSC3887 | TFU → SVO | May 10, 15:35 UTC | May 11, 14:25 UTC | 22h 50m |
| 2026-05-10 | CSC3887 | TFU → SVO | May 10, 14:34 UTC | May 11, 13:00 UTC | 22h 25m |
| 2026-05-09 | CSC3838 | LAX → TFU | May 9, 17:20 UTC | May 10, 16:00 UTC | 22h 40m |
| 2026-05-09 | CSC3838 | LAX → TFU | May 9, 06:35 UTC | May 9, 19:05 UTC | 12h 30m |
| 2026-05-08 | CSC3837 | TFU → LAX | May 8, 17:00 UTC | May 9, 02:55 UTC | 9h 55m |
| 2026-05-07 | CSC3837 | TFU → LAX | May 7, 17:55 UTC | May 8, 17:15 UTC | 23h 20m |
| 2026-05-07 | CSC3896 | FCO → TFU | May 7, 11:45 UTC | May 7, 18:05 UTC | 6h 20m |
| 2026-05-06 | CSC3895 | TFU → FCO | May 6, 21:20 UTC | May 7, 04:40 UTC | 7h 20m |
| 2026-05-05 | CSC3860 | YVR → TFU | May 5, 07:50 UTC | May 5, 18:15 UTC | 10h 25m |
| 2026-05-04 | CSC3859 | TFU → YVR | May 4, 19:10 UTC | May 5, 05:00 UTC | 9h 50m |
| 2026-05-03 | CSC3816 | LED → TFU | May 3, 23:30 UTC | May 4, 19:25 UTC | 19h 56m |
| 2026-05-03 | CSC3815 | TFU → LED | May 3, 13:00 UTC | May 3, 23:50 UTC | 10h 50m |
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-325J page for operator, model, and routing details .