sensors Mode-S transponder
781EC1
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32D2 · AIRBUS A-330-300
- Hex
- 781EC1
- Octal
- 36017301
- Decimal
- 7,872,193
- Country
- CN
- Tail
- B-32D2
- Type
- A333
- Flights observed
- 213
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 26, 14:25 UTC
Last known position
Country allocation
The ICAO 24-bit address 781EC1 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC9605 | - | 19 | 2026-07-14 |
| CSC9647 | - | 17 | 2026-07-05 |
| CSC9606 | - | 16 | 2026-07-14 |
| CSC9648 | - | 15 | 2026-06-28 |
| CSC9611 | - | 15 | 2026-07-20 |
| CSC9619 | - | 12 | 2026-07-19 |
| CSC9620 | - | 10 | 2026-07-26 |
| CSC9612 | Sichuan Airlines | 10 | 2026-07-20 |
| CSC9609 | Sichuan Airlines | 10 | 2026-06-03 |
| CSC9651 | Sichuan Airlines | 8 | 2026-05-27 |
| CSC9643 | Sichuan Airlines | 8 | 2026-07-25 |
| CSC9613 | - | 8 | 2026-06-27 |
| CSC9821 | Sichuan Airlines | 7 | 2026-05-21 |
| CSC9641 | - | 7 | 2026-04-27 |
| CSC9656 | Sichuan Airlines | 6 | 2026-07-23 |
| CSC9610 | Sichuan Airlines | 6 | 2026-06-03 |
| CSC9644 | - | 5 | 2026-05-03 |
| CSC9614 | - | 5 | 2026-06-27 |
| CSC9639 | - | 4 | 2026-07-02 |
| CSC9802 | - | 3 | 2026-07-03 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CSC9620 | - | Jul 26, 13:40 UTC | Jul 26, 14:25 UTC | 45m |
| 2026-07-25 | CSC9643 | TFU → MAA | Jul 25, 08:45 UTC | Jul 26, 02:00 UTC | 17h 15m |
| 2026-07-23 | CSC9656 | DEL → TFU | Jul 23, 12:00 UTC | Jul 23, 12:35 UTC | 35m |
| 2026-07-23 | CSC9656 | DEL → TFU | Jul 23, 09:45 UTC | Jul 23, 11:55 UTC | 2h 10m |
| 2026-07-22 | CSC9655 | TFU → DEL | Jul 22, 13:50 UTC | Jul 23, 07:25 UTC | 17h 35m |
| 2026-07-22 | CSC9655 | TFU → DEL | Jul 22, 10:20 UTC | Jul 23, 07:25 UTC | 21h 5m |
| 2026-07-22 | CSC9620 | - | Jul 22, 01:40 UTC | Jul 22, 14:25 UTC | 12h 45m |
| 2026-07-20 | CSC9612 | FRA → TFU | Jul 20, 15:25 UTC | Jul 20, 19:15 UTC | 3h 50m |
| 2026-07-20 | CSC9611 | HEL → FRA | Jul 20, 10:30 UTC | Jul 20, 12:35 UTC | 2h 5m |
| 2026-07-19 | CSC9620 | - | Jul 19, 12:30 UTC | Jul 20, 04:20 UTC | 15h 50m |
| 2026-07-19 | CSC9619 | - | Jul 19, 06:20 UTC | Jul 19, 06:25 UTC | 5m |
| 2026-07-19 | CSC9619 | - | Jul 19, 01:30 UTC | Jul 19, 04:35 UTC | 3h 5m |
| 2026-07-17 | CSC9620 | - | Jul 17, 09:40 UTC | Jul 17, 14:15 UTC | 4h 35m |
| 2026-07-17 | CSC9619 | - | Jul 17, 01:59 UTC | Jul 17, 02:45 UTC | 45m |
| 2026-07-15 | CSC9638 | - | Jul 15, 13:25 UTC | Jul 15, 16:05 UTC | 2h 40m |
| 2026-07-14 | CSC9606 | - | Jul 14, 14:35 UTC | Jul 15, 09:45 UTC | 19h 9m |
| 2026-07-14 | CSC9605 | - | Jul 14, 10:15 UTC | Jul 14, 12:20 UTC | 2h 5m |
| 2026-07-14 | CSC9605 | SVO → SVO | Jul 14, 08:45 UTC | Jul 14, 09:25 UTC | 40m |
| 2026-07-14 | CSC9605 | - | Jul 14, 01:40 UTC | Jul 14, 02:10 UTC | 30m |
| 2026-07-12 | CSC9620 | - | Jul 12, 09:55 UTC | Jul 12, 10:40 UTC | 45m |
| 2026-07-12 | CSC9619 | - | Jul 12, 06:30 UTC | Jul 12, 06:35 UTC | 5m |
| 2026-07-12 | CSC9619 | - | Jul 12, 01:40 UTC | Jul 12, 02:15 UTC | 35m |
| 2026-07-08 | CSC9620 | - | Jul 8, 13:45 UTC | Jul 8, 18:25 UTC | 4h 40m |
| 2026-07-08 | CSC9619 | - | Jul 8, 06:30 UTC | Jul 8, 06:40 UTC | 10m |
| 2026-07-07 | CSC9612 | - | Jul 7, 07:50 UTC | Jul 8, 02:15 UTC | 18h 25m |
| 2026-07-07 | CSC9611 | HEL → FRA | Jul 7, 02:50 UTC | Jul 7, 05:00 UTC | 2h 10m |
| 2026-07-06 | CSC9611 | - | Jul 6, 18:35 UTC | Jul 6, 19:05 UTC | 30m |
| 2026-07-05 | CSC9647 | - | Jul 5, 04:35 UTC | Jul 5, 07:45 UTC | 3h 10m |
| 2026-07-03 | CSC9802 | - | Jul 3, 13:25 UTC | Jul 3, 14:50 UTC | 1h 25m |
| 2026-07-02 | CSC9640 | - | Jul 2, 13:05 UTC | Jul 3, 01:30 UTC | 12h 25m |
| 2026-07-02 | CSC9639 | - | Jul 2, 07:30 UTC | Jul 2, 09:30 UTC | 2h 0m |
| 2026-07-01 | CSC9639 | - | Jul 1, 10:20 UTC | Jul 2, 09:30 UTC | 23h 10m |
| 2026-07-01 | CSC9620 | - | Jul 1, 09:45 UTC | Jul 2, 08:15 UTC | 22h 30m |
| 2026-07-01 | CSC9619 | - | Jul 1, 06:15 UTC | Jul 1, 06:30 UTC | 15m |
| 2026-07-01 | CSC9619 | - | Jul 1, 01:25 UTC | Jul 1, 02:05 UTC | 40m |
| 2026-06-29 | CSC9612 | - | Jun 29, 11:29 UTC | Jun 29, 13:34 UTC | 2h 5m |
| 2026-06-29 | CSC9611 | HEL → FRA | Jun 29, 06:40 UTC | Jun 29, 08:54 UTC | 2h 15m |
| 2026-06-29 | CSC9611 | - | Jun 29, 05:00 UTC | Jun 29, 05:09 UTC | 10m |
| 2026-06-28 | CSC9648 | - | Jun 28, 11:55 UTC | Jun 29, 00:44 UTC | 12h 50m |
| 2026-06-28 | CSC9647 | - | Jun 28, 08:34 UTC | Jun 28, 08:55 UTC | 20m |
| 2026-06-27 | CSC9614 | - | Jun 27, 12:55 UTC | Jun 28, 07:14 UTC | 18h 20m |
| 2026-06-27 | CSC9613 | HEL → FRA | Jun 27, 07:45 UTC | Jun 27, 09:50 UTC | 2h 5m |
| 2026-06-26 | CSC9620 | - | Jun 26, 09:35 UTC | Jun 27, 01:15 UTC | 15h 40m |
| 2026-06-26 | CSC9619 | HEL → HEL | Jun 26, 06:19 UTC | Jun 26, 06:25 UTC | 5m |
| 2026-06-25 | CSC9656 | - | Jun 25, 09:25 UTC | Jun 26, 02:05 UTC | 16h 40m |
| 2026-06-24 | CSC9655 | TFU → DEL | Jun 24, 17:14 UTC | Jun 25, 06:50 UTC | 13h 35m |
| 2026-06-24 | CSC9637 | - | Jun 24, 11:20 UTC | Jun 24, 12:54 UTC | 1h 35m |
| 2026-06-23 | CSC9606 | - | Jun 23, 14:25 UTC | Jun 24, 12:54 UTC | 22h 30m |
| 2026-06-23 | CSC9605 | SVO → BRU | Jun 23, 08:39 UTC | Jun 23, 12:09 UTC | 3h 30m |
| 2026-06-23 | CSC9605 | - | Jun 23, 01:20 UTC | Jun 23, 01:45 UTC | 25m |
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-32D2 page for operator, model, and routing details .