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
- 195
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 4h ago
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 |
|---|---|---|---|
| CSC9647 | - | 17 | 2026-07-05 |
| CSC9605 | - | 17 | 2026-07-14 |
| CSC9648 | - | 15 | 2026-06-28 |
| CSC9606 | - | 15 | 2026-06-23 |
| CSC9611 | - | 14 | 2026-07-07 |
| CSC9609 | Sichuan Airlines | 10 | 2026-06-03 |
| CSC9619 | - | 9 | 2026-07-12 |
| CSC9612 | - | 9 | 2026-07-07 |
| CSC9651 | Sichuan Airlines | 8 | 2026-05-27 |
| CSC9613 | - | 8 | 2026-06-27 |
| CSC9821 | Sichuan Airlines | 7 | 2026-05-21 |
| CSC9643 | Sichuan Airlines | 7 | 2026-05-02 |
| CSC9641 | - | 7 | 2026-04-27 |
| CSC9620 | - | 6 | 2026-07-12 |
| CSC9610 | Sichuan Airlines | 6 | 2026-06-03 |
| CSC9644 | - | 5 | 2026-05-03 |
| CSC9614 | - | 5 | 2026-06-27 |
| CSC9656 | - | 4 | 2026-06-25 |
| CSC9639 | - | 4 | 2026-07-02 |
| CSC9802 | - | 3 | 2026-07-03 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 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 |
| 2026-06-22 | CSC9620 | - | Jun 22, 01:25 UTC | Jun 22, 02:04 UTC | 40m |
| 2026-06-21 | CSC9619 | - | Jun 21, 17:45 UTC | Jun 21, 18:14 UTC | 30m |
| 2026-06-20 | CSC9614 | - | Jun 20, 14:29 UTC | Jun 20, 16:34 UTC | 2h 5m |
| 2026-06-20 | CSC9613 | HEL → FRA | Jun 20, 09:19 UTC | Jun 20, 11:25 UTC | 2h 5m |
| 2026-06-20 | CSC9613 | HEL → FRA | Jun 20, 07:54 UTC | Jun 20, 08:05 UTC | 10m |
| 2026-06-19 | CSC9606 | - | Jun 19, 09:14 UTC | Jun 20, 03:34 UTC | 18h 20m |
| 2026-06-18 | CSC9605 | LED → LED | Jun 18, 10:40 UTC | Jun 18, 11:10 UTC | 30m |
| 2026-06-17 | CSC9620 | - | Jun 17, 10:35 UTC | Jun 18, 02:20 UTC | 15h 45m |
| 2026-06-17 | CSC9619 | - | Jun 17, 06:55 UTC | Jun 17, 07:05 UTC | 10m |
| 2026-06-17 | CSC9619 | - | Jun 17, 02:20 UTC | Jun 17, 05:50 UTC | 3h 30m |
| 2026-06-16 | CSC9802 | BRU → BRU | Jun 16, 04:20 UTC | Jun 17, 02:55 UTC | 22h 36m |
| 2026-06-16 | CSC9802 | BRU → BRU | Jun 16, 04:10 UTC | Jun 16, 05:34 UTC | 1h 25m |
| 2026-06-15 | CSC9801 | SVO → BRU | Jun 15, 06:49 UTC | Jun 16, 00:40 UTC | 17h 50m |
| 2026-06-15 | CSC9661 | - | Jun 15, 03:19 UTC | Jun 15, 04:15 UTC | 55m |
| 2026-06-12 | CSC9648 | BOM → TFU | Jun 12, 12:30 UTC | Jun 12, 13:20 UTC | 50m |
| 2026-06-12 | CSC9648 | BOM → TFU | Jun 12, 10:35 UTC | Jun 12, 10:50 UTC | 15m |
| 2026-06-12 | CSC9647 | TFU → BOM | Jun 12, 07:20 UTC | Jun 12, 07:30 UTC | 10m |
| 2026-06-11 | CSC9606 | BRU → BRU | Jun 11, 13:50 UTC | Jun 12, 05:40 UTC | 15h 51m |
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 .