sensors Mode-S transponder
781EEE
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32DC · AIRBUS A-320neo
- Hex
- 781EEE
- Octal
- 36017356
- Decimal
- 7,872,238
- Country
- CN
- Tail
- B-32DC
- Type
- A20N
- Flights observed
- 22
- Distinct callsigns
- 14
- Country
- CN
- Last broadcast
- 20h ago
Last known position
Country allocation
The ICAO 24-bit address 781EEE 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| UEA2720 | United Eagle Airlines | 4 | 2026-07-17 |
| UEA2862 | United Eagle Airlines | 2 | 2026-05-08 |
| UEA2861 | United Eagle Airlines | 2 | 2026-05-08 |
| UEA2713 | - | 2 | 2026-07-07 |
| UEA2249 | - | 2 | 2026-07-15 |
| UEA2757 | United Eagle Airlines | 1 | 2026-05-06 |
| UEA2714 | - | 1 | 2026-07-07 |
| UEA2442 | United Eagle Airlines | 1 | 2026-04-18 |
| UEA2303 | United Eagle Airlines | 1 | 2026-05-28 |
| UEA2288 | - | 1 | 2026-07-04 |
| UEA2254 | - | 1 | 2026-07-08 |
| UEA2218 | United Eagle Airlines | 1 | 2026-06-13 |
| UEA1848 | - | 1 | 2026-07-04 |
| UEA1823 | - | 1 | 2026-05-09 |
Recent flights last 22
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | UEA2720 | ZUH → TFU | Jul 17, 11:10 UTC | Jul 17, 11:25 UTC | 15m |
| 2026-07-15 | UEA2249 | - | Jul 15, 04:50 UTC | Jul 15, 05:05 UTC | 15m |
| 2026-07-12 | UEA2720 | - | Jul 12, 11:01 UTC | Jul 12, 11:15 UTC | 15m |
| 2026-07-08 | UEA2254 | - | Jul 8, 07:15 UTC | Jul 8, 07:25 UTC | 10m |
| 2026-07-07 | UEA2714 | - | Jul 7, 07:10 UTC | Jul 8, 00:55 UTC | 17h 45m |
| 2026-07-07 | UEA2713 | - | Jul 7, 02:50 UTC | Jul 8, 00:55 UTC | 22h 5m |
| 2026-07-06 | UEA2713 | - | Jul 6, 15:20 UTC | Jul 7, 10:50 UTC | 19h 30m |
| 2026-07-04 | UEA1848 | - | Jul 4, 08:10 UTC | Jul 5, 02:10 UTC | 18h 0m |
| 2026-07-04 | UEA2288 | - | Jul 4, 03:05 UTC | Jul 4, 08:40 UTC | 5h 35m |
| 2026-07-03 | UEA2720 | - | Jul 3, 13:35 UTC | Jul 3, 13:45 UTC | 10m |
| 2026-07-01 | UEA2249 | - | Jul 1, 04:15 UTC | Jul 1, 04:25 UTC | 10m |
| 2026-06-28 | UEA2720 | - | Jun 28, 13:59 UTC | Jun 28, 14:09 UTC | 10m |
| 2026-06-13 | UEA2218 | SZX → CTU | Jun 13, 03:45 UTC | Jun 13, 04:00 UTC | 14m |
| 2026-05-28 | UEA2303 | HFE → HRB | May 28, 06:25 UTC | May 28, 06:45 UTC | 20m |
| 2026-05-09 | - | - | May 9, 12:35 UTC | May 9, 12:45 UTC | 10m |
| 2026-05-09 | UEA1823 | - | May 9, 02:25 UTC | May 9, 02:50 UTC | 25m |
| 2026-05-08 | UEA2862 | CNX → TFU | May 8, 15:20 UTC | May 8, 15:35 UTC | 15m |
| 2026-05-08 | UEA2861 | TFU → CNX | May 8, 13:20 UTC | May 8, 13:50 UTC | 30m |
| 2026-05-06 | UEA2757 | CTU → SHE | May 6, 07:45 UTC | May 6, 08:01 UTC | 15m |
| 2026-05-03 | UEA2862 | CNX → TFU | May 3, 14:55 UTC | May 3, 15:15 UTC | 20m |
| 2026-05-03 | UEA2861 | TFU → CNX | May 3, 13:15 UTC | May 3, 13:50 UTC | 35m |
| 2026-04-18 | UEA2442 | CSX → SHE | Apr 18, 14:00 UTC | Apr 19, 06:35 UTC | 16h 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-32DC page for operator, model, and routing details .