sensors Mode-S transponder
781FA3
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32ES · AIRBUS A-320neo
- Hex
- 781FA3
- Octal
- 36017643
- Decimal
- 7,872,419
- Country
- CN
- Tail
- B-32ES
- Type
- A20N
- Flights observed
- 27
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 11d ago
Last known position
Country allocation
The ICAO 24-bit address 781FA3 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 |
|---|---|---|---|
| UEA2413 | - | 3 | 2026-07-01 |
| UEA2207 | United Eagle Airlines | 2 | 2026-06-14 |
| UEA1873 | United Eagle Airlines | 2 | 2026-05-03 |
| UEA1823 | - | 2 | 2026-04-28 |
| UEA2868 | United Eagle Airlines | 1 | 2026-06-11 |
| UEA2867 | United Eagle Airlines | 1 | 2026-06-11 |
| UEA2863 | United Eagle Airlines | 1 | 2026-06-09 |
| UEA2862 | United Eagle Airlines | 1 | 2026-04-26 |
| UEA2861 | United Eagle Airlines | 1 | 2026-04-26 |
| UEA2818 | United Eagle Airlines | 1 | 2026-04-30 |
| UEA2817 | United Eagle Airlines | 1 | 2026-04-30 |
| UEA2713 | United Eagle Airlines | 1 | 2026-05-05 |
| UEA2414 | United Eagle Airlines | 1 | 2026-06-19 |
| UEA2288 | - | 1 | 2026-07-18 |
| UEA2245 | - | 1 | 2026-07-12 |
| UEA1886 | United Eagle Airlines | 1 | 2026-06-06 |
| UEA1858 | United Eagle Airlines | 1 | 2026-06-07 |
| UEA1848 | - | 1 | 2026-05-01 |
| UEA1847 | - | 1 | 2026-05-01 |
| UEA1842 | - | 1 | 2026-07-11 |
Recent flights last 27
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-18 | UEA2288 | - | Jul 18, 03:10 UTC | Jul 18, 07:40 UTC | 4h 30m |
| 2026-07-12 | UEA2245 | - | Jul 12, 23:35 UTC | Jul 12, 23:45 UTC | 10m |
| 2026-07-11 | UEA1842 | - | Jul 11, 04:45 UTC | Jul 11, 05:01 UTC | 15m |
| 2026-07-01 | UEA2413 | - | Jul 1, 00:45 UTC | Jul 1, 01:00 UTC | 15m |
| 2026-06-19 | UEA2414 | HAK → TFU | Jun 19, 04:00 UTC | Jun 19, 04:14 UTC | 15m |
| 2026-06-19 | UEA2413 | TFU → HAK | Jun 19, 01:34 UTC | Jun 19, 01:50 UTC | 15m |
| 2026-06-14 | UEA2207 | CTU → SYX | Jun 14, 12:30 UTC | Jun 14, 15:25 UTC | 2h 55m |
| 2026-06-12 | - | - | Jun 12, 14:50 UTC | Jun 12, 15:00 UTC | 10m |
| 2026-06-11 | UEA2868 | BKK → TFU | Jun 11, 14:35 UTC | Jun 11, 15:00 UTC | 25m |
| 2026-06-11 | UEA2867 | TFU → BKK | Jun 11, 12:15 UTC | Jun 11, 13:10 UTC | 55m |
| 2026-06-09 | UEA2413 | TFU → HAK | Jun 9, 15:45 UTC | Jun 10, 04:10 UTC | 12h 25m |
| 2026-06-09 | UEA2863 | TFU → HAN | Jun 9, 13:40 UTC | Jun 9, 14:00 UTC | 20m |
| 2026-06-07 | UEA1858 | WUH → SHE | Jun 7, 12:20 UTC | Jun 7, 12:35 UTC | 15m |
| 2026-06-06 | UEA1886 | CGO → SHE | Jun 6, 12:04 UTC | Jun 6, 12:20 UTC | 15m |
| 2026-05-30 | UEA2207 | CTU → SYX | May 30, 12:35 UTC | May 30, 15:20 UTC | 2h 45m |
| 2026-05-28 | UEA1822 | - | May 28, 13:20 UTC | May 28, 15:15 UTC | 1h 55m |
| 2026-05-05 | UEA2713 | SHE → HFE | May 5, 01:30 UTC | May 5, 13:35 UTC | 12h 5m |
| 2026-05-03 | UEA1873 | CSX → SHE | May 3, 13:55 UTC | May 3, 14:10 UTC | 15m |
| 2026-05-02 | UEA1873 | CSX → SHE | May 2, 13:40 UTC | May 2, 13:55 UTC | 15m |
| 2026-05-01 | UEA1847 | - | May 1, 09:35 UTC | May 1, 09:45 UTC | 10m |
| 2026-05-01 | UEA1848 | - | May 1, 00:35 UTC | May 1, 00:55 UTC | 20m |
| 2026-04-30 | UEA2818 | WUT → SHE | Apr 30, 09:40 UTC | Apr 30, 09:50 UTC | 10m |
| 2026-04-30 | UEA2817 | SHE → WUT | Apr 30, 00:20 UTC | Apr 30, 00:30 UTC | 10m |
| 2026-04-28 | UEA1823 | - | Apr 28, 02:55 UTC | Apr 28, 03:05 UTC | 10m |
| 2026-04-26 | UEA2862 | CNX → TFU | Apr 26, 15:00 UTC | Apr 26, 15:25 UTC | 25m |
| 2026-04-26 | UEA2861 | TFU → CNX | Apr 26, 13:25 UTC | Apr 26, 13:55 UTC | 30m |
| 2026-04-25 | UEA1823 | - | Apr 25, 02:40 UTC | Apr 25, 02:50 UTC | 10m |
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-32ES page for operator, model, and routing details .