sensors Mode-S transponder
781025
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8609 · AIRBUS A-320
- Hex
- 781025
- Octal
- 36010045
- Decimal
- 7,868,453
- Country
- CN
- Tail
- B-8609
- Type
- A320
- Flights observed
- 25
- Distinct callsigns
- 16
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 781025 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 16 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| UEA1869 | - | 5 | 2026-04-24 |
| UEA2449 | United Eagle Airlines | 3 | 2026-05-09 |
| UEA2713 | United Eagle Airlines | 2 | 2026-05-27 |
| UEA2450 | United Eagle Airlines | 2 | 2026-05-09 |
| UEA2227 | - | 2 | 2026-04-25 |
| UEA2714 | United Eagle Airlines | 1 | 2026-06-01 |
| UEA2442 | United Eagle Airlines | 1 | 2026-05-01 |
| UEA2303 | United Eagle Airlines | 1 | 2026-05-21 |
| UEA2287 | - | 1 | 2026-04-13 |
| UEA2264 | United Eagle Airlines | 1 | 2026-05-25 |
| UEA2244 | - | 1 | 2026-06-03 |
| UEA2208 | United Eagle Airlines | 1 | 2026-06-06 |
| UEA2207 | United Eagle Airlines | 1 | 2026-06-06 |
| UEA1873 | United Eagle Airlines | 1 | 2026-04-30 |
| UEA1870 | - | 1 | 2026-04-22 |
| UEA1821 | - | 1 | 2026-05-19 |
Recent flights last 25
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-06 | UEA2208 | SYX → CTU | Jun 6, 15:10 UTC | Jun 6, 15:25 UTC | 15m |
| 2026-06-06 | UEA2207 | CTU → SYX | Jun 6, 12:40 UTC | Jun 6, 13:00 UTC | 20m |
| 2026-06-03 | UEA2244 | - | Jun 3, 06:20 UTC | Jun 3, 06:30 UTC | 10m |
| 2026-06-01 | UEA2714 | SYX → HFE | Jun 1, 06:10 UTC | Jun 1, 09:35 UTC | 3h 25m |
| 2026-05-27 | UEA2713 | SHE → HFE | May 27, 01:54 UTC | May 27, 13:00 UTC | 11h 6m |
| 2026-05-26 | UEA2713 | SHE → HFE | May 26, 13:54 UTC | May 27, 13:00 UTC | 23h 6m |
| 2026-05-25 | UEA2264 | HGH → HAK | May 25, 06:35 UTC | May 25, 09:55 UTC | 3h 20m |
| 2026-05-21 | UEA2303 | HFE → HRB | May 21, 06:35 UTC | May 21, 11:05 UTC | 4h 30m |
| 2026-05-19 | UEA1821 | - | May 19, 13:20 UTC | May 19, 13:35 UTC | 15m |
| 2026-05-09 | UEA2450 | HRB → HFE | May 9, 09:55 UTC | May 10, 03:14 UTC | 17h 20m |
| 2026-05-09 | UEA2449 | TFU → HFE | May 9, 05:50 UTC | May 10, 03:14 UTC | 21h 25m |
| 2026-05-07 | UEA2450 | HRB → HFE | May 7, 09:50 UTC | May 8, 06:54 UTC | 21h 5m |
| 2026-05-07 | UEA2449 | TFU → HFE | May 7, 05:50 UTC | May 8, 03:14 UTC | 21h 25m |
| 2026-05-05 | UEA2449 | TFU → HFE | May 5, 05:45 UTC | May 5, 10:00 UTC | 4h 15m |
| 2026-05-01 | UEA2442 | CSX → SHE | May 1, 12:15 UTC | May 2, 06:05 UTC | 17h 50m |
| 2026-04-30 | UEA1873 | CSX → SHE | Apr 30, 14:05 UTC | May 1, 12:15 UTC | 22h 10m |
| 2026-04-25 | UEA2227 | - | Apr 25, 05:35 UTC | Apr 25, 13:20 UTC | 7h 45m |
| 2026-04-24 | UEA1869 | - | Apr 24, 08:25 UTC | Apr 25, 01:30 UTC | 17h 5m |
| 2026-04-24 | UEA1869 | - | Apr 24, 04:05 UTC | Apr 25, 01:30 UTC | 21h 25m |
| 2026-04-23 | UEA1869 | - | Apr 23, 14:20 UTC | Apr 24, 11:30 UTC | 21h 10m |
| 2026-04-23 | UEA1869 | - | Apr 23, 11:01 UTC | Apr 24, 08:50 UTC | 21h 49m |
| 2026-04-23 | UEA2227 | - | Apr 23, 04:25 UTC | Apr 23, 06:01 UTC | 1h 35m |
| 2026-04-22 | UEA1870 | - | Apr 22, 12:20 UTC | Apr 23, 01:30 UTC | 13h 10m |
| 2026-04-22 | UEA1869 | - | Apr 22, 01:30 UTC | Apr 22, 05:45 UTC | 4h 15m |
| 2026-04-13 | UEA2287 | - | Apr 13, 03:10 UTC | Apr 13, 03:25 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-8609 page for operator, model, and routing details .