sensors Mode-S transponder
781FDA
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32FE · AIRBUS A-330-300
- Hex
- 781FDA
- Octal
- 36017732
- Decimal
- 7,872,474
- Country
- CN
- Tail
- B-32FE
- Type
- A333
- Flights observed
- 55
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 34m ago
Last known position
Country allocation
The ICAO 24-bit address 781FDA 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 |
|---|---|---|---|
| CBJ677 | - | 12 | 2026-05-31 |
| CBJ678 | - | 10 | 2026-06-02 |
| CBJ651 | - | 8 | 2026-05-16 |
| CBJ689 | - | 5 | 2026-05-28 |
| CBJ690 | - | 4 | 2026-06-01 |
| CBJ681 | - | 3 | 2026-05-15 |
| CBJ660 | - | 3 | 2026-05-07 |
| CBJ652 | - | 3 | 2026-05-13 |
| CBJ685 | - | 2 | 2026-05-20 |
| CBJ683 | - | 2 | 2026-04-24 |
| CBJ654 | - | 2 | 2026-05-05 |
| CBJ684 | - | 1 | 2026-04-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | CBJ678 | - | Jun 2, 19:10 UTC | Jun 2, 20:30 UTC | 1h 20m |
| 2026-06-01 | CBJ690 | - | Jun 1, 15:25 UTC | Jun 2, 09:00 UTC | 17h 35m |
| 2026-05-31 | CBJ678 | - | May 31, 16:35 UTC | Jun 1, 16:30 UTC | 23h 55m |
| 2026-05-31 | CBJ678 | - | May 31, 16:05 UTC | May 31, 17:40 UTC | 1h 35m |
| 2026-05-31 | CBJ677 | - | May 31, 10:20 UTC | May 31, 13:15 UTC | 2h 55m |
| 2026-05-30 | CBJ677 | - | May 30, 16:35 UTC | May 31, 13:15 UTC | 20h 40m |
| 2026-05-29 | CBJ690 | - | May 29, 18:35 UTC | May 30, 14:30 UTC | 19h 55m |
| 2026-05-29 | CBJ690 | - | May 29, 12:35 UTC | May 29, 20:40 UTC | 8h 5m |
| 2026-05-28 | CBJ689 | - | May 28, 21:40 UTC | May 29, 20:30 UTC | 22h 50m |
| 2026-05-28 | CBJ689 | - | May 28, 19:45 UTC | May 29, 18:30 UTC | 22h 45m |
| 2026-05-28 | CBJ678 | - | May 28, 16:45 UTC | May 29, 14:25 UTC | 21h 40m |
| 2026-05-28 | CBJ677 | - | May 28, 07:25 UTC | May 28, 11:00 UTC | 3h 35m |
| 2026-05-26 | CBJ678 | - | May 26, 21:25 UTC | May 27, 02:39 UTC | 5h 15m |
| 2026-05-25 | CBJ689 | - | May 25, 16:45 UTC | May 26, 11:44 UTC | 19h 0m |
| 2026-05-24 | CBJ678 | - | May 24, 16:15 UTC | May 24, 17:40 UTC | 1h 25m |
| 2026-05-24 | CBJ677 | - | May 24, 06:00 UTC | May 24, 13:35 UTC | 7h 35m |
| 2026-05-22 | CBJ690 | - | May 22, 18:40 UTC | May 22, 19:05 UTC | 25m |
| 2026-05-21 | CBJ678 | - | May 21, 17:05 UTC | May 21, 20:05 UTC | 3h 0m |
| 2026-05-21 | CBJ677 | - | May 21, 14:30 UTC | May 21, 14:50 UTC | 20m |
| 2026-05-21 | CBJ677 | - | May 21, 10:40 UTC | May 21, 12:10 UTC | 1h 30m |
| 2026-05-20 | CBJ677 | - | May 20, 15:10 UTC | May 21, 12:10 UTC | 21h 0m |
| 2026-05-20 | CBJ685 | - | May 20, 12:30 UTC | May 20, 12:50 UTC | 20m |
| 2026-05-19 | CBJ678 | - | May 19, 21:30 UTC | May 20, 02:55 UTC | 5h 25m |
| 2026-05-19 | CBJ677 | - | May 19, 11:40 UTC | May 19, 18:50 UTC | 7h 10m |
| 2026-05-18 | CBJ677 | - | May 18, 21:50 UTC | May 19, 18:50 UTC | 21h 0m |
| 2026-05-18 | CBJ689 | - | May 18, 15:05 UTC | May 19, 12:05 UTC | 20h 59m |
| 2026-05-17 | CBJ678 | - | May 17, 20:35 UTC | May 18, 15:45 UTC | 19h 10m |
| 2026-05-17 | CBJ678 | - | May 17, 20:15 UTC | May 18, 15:45 UTC | 19h 30m |
| 2026-05-17 | CBJ677 | - | May 17, 10:00 UTC | May 17, 17:25 UTC | 7h 25m |
| 2026-05-16 | CBJ677 | - | May 16, 18:50 UTC | May 17, 17:25 UTC | 22h 35m |
| 2026-05-16 | CBJ677 | - | May 16, 18:20 UTC | May 17, 16:30 UTC | 22h 10m |
| 2026-05-16 | CBJ651 | - | May 16, 09:06 UTC | May 16, 16:35 UTC | 7h 30m |
| 2026-05-16 | CBJ685 | - | May 16, 06:10 UTC | May 16, 06:35 UTC | 25m |
| 2026-05-15 | CBJ681 | - | May 15, 03:10 UTC | May 15, 21:20 UTC | 18h 9m |
| 2026-05-15 | CBJ651 | - | May 15, 00:30 UTC | May 15, 01:15 UTC | 45m |
| 2026-05-13 | CBJ652 | - | May 13, 17:40 UTC | May 13, 18:30 UTC | 50m |
| 2026-05-13 | CBJ651 | - | May 13, 14:55 UTC | May 13, 15:50 UTC | 55m |
| 2026-05-12 | CBJ651 | - | May 12, 16:35 UTC | May 13, 15:50 UTC | 23h 15m |
| 2026-05-12 | CBJ652 | - | May 12, 16:00 UTC | May 12, 16:45 UTC | 45m |
| 2026-05-11 | CBJ681 | - | May 11, 18:40 UTC | May 12, 14:10 UTC | 19h 30m |
| 2026-05-07 | CBJ660 | - | May 7, 20:40 UTC | May 7, 21:20 UTC | 40m |
| 2026-05-07 | CBJ651 | - | May 7, 17:30 UTC | May 7, 18:30 UTC | 1h 0m |
| 2026-05-06 | CBJ652 | - | May 6, 16:00 UTC | May 6, 16:25 UTC | 25m |
| 2026-05-05 | CBJ654 | - | May 5, 21:25 UTC | May 6, 13:45 UTC | 16h 20m |
| 2026-05-01 | CBJ660 | - | May 1, 01:55 UTC | May 1, 02:40 UTC | 45m |
| 2026-04-30 | CBJ651 | - | Apr 30, 21:20 UTC | Apr 30, 22:25 UTC | 1h 5m |
| 2026-04-28 | CBJ681 | - | Apr 28, 23:05 UTC | Apr 29, 05:30 UTC | 6h 25m |
| 2026-04-24 | CBJ683 | - | Apr 24, 15:35 UTC | Apr 24, 22:35 UTC | 7h 0m |
| 2026-04-21 | CBJ689 | - | Apr 21, 13:30 UTC | Apr 21, 21:05 UTC | 7h 35m |
| 2026-04-16 | CBJ684 | - | Apr 16, 21:34 UTC | Apr 16, 23:10 UTC | 1h 35m |
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-32FE page for operator, model, and routing details .