sensors Mode-S transponder
781117
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-7826 · BOEING 737-800
- Hex
- 781117
- Octal
- 36010427
- Decimal
- 7,868,695
- Country
- CN
- Tail
- B-7826
- Type
- B738
- Flights observed
- 31
- Distinct callsigns
- 18
- Country
- CN
- Last broadcast
- 14h ago
Last known position
Country allocation
The ICAO 24-bit address 781117 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CXA8781 | Xiamen Airlines | 4 | 2026-05-16 |
| CXA8088 | Xiamen Airlines | 4 | 2026-04-23 |
| CXA8818 | Xiamen Airlines | 3 | 2026-05-24 |
| CXA8048 | - | 3 | 2026-05-12 |
| CXA8523 | - | 2 | 2026-06-02 |
| CXA8375 | Xiamen Airlines | 2 | 2026-05-02 |
| CXA8341 | - | 2 | 2026-06-04 |
| CXA8827 | Xiamen Airlines | 1 | 2026-06-01 |
| CXA8782 | Xiamen Airlines | 1 | 2026-05-16 |
| CXA8616 | - | 1 | 2026-05-27 |
| CXA8555 | Xiamen Airlines | 1 | 2026-05-21 |
| CXA8526 | - | 1 | 2026-06-04 |
| CXA8376 | Xiamen Airlines | 1 | 2026-05-02 |
| CXA8366 | Xiamen Airlines | 1 | 2026-06-08 |
| CXA8344 | Xiamen Airlines | 1 | 2026-06-01 |
| CXA8221 | - | 1 | 2026-05-05 |
| CXA8080 | Xiamen Airlines | 1 | 2026-04-29 |
| CXA8050 | Xiamen Airlines | 1 | 2026-05-23 |
Recent flights last 31
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-08 | CXA8366 | SZX → TSN | Jun 8, 14:45 UTC | Jun 8, 14:55 UTC | 10m |
| 2026-06-04 | CXA8341 | - | Jun 4, 05:30 UTC | Jun 4, 08:45 UTC | 3h 15m |
| 2026-06-04 | CXA8526 | - | Jun 4, 01:50 UTC | Jun 4, 02:25 UTC | 35m |
| 2026-06-02 | CXA8523 | - | Jun 2, 14:05 UTC | Jun 3, 08:00 UTC | 17h 55m |
| 2026-06-01 | CXA8344 | SZX → HGH | Jun 1, 14:05 UTC | Jun 1, 14:20 UTC | 15m |
| 2026-06-01 | CXA8827 | XMN → ZUH | Jun 1, 12:05 UTC | Jun 1, 12:30 UTC | 25m |
| 2026-06-01 | CXA8341 | - | Jun 1, 01:40 UTC | Jun 1, 08:50 UTC | 7h 10m |
| 2026-05-30 | CXA8523 | - | May 30, 13:55 UTC | May 30, 14:15 UTC | 20m |
| 2026-05-27 | CXA8616 | - | May 27, 11:30 UTC | May 28, 04:15 UTC | 16h 45m |
| 2026-05-24 | CXA8818 | HRB → HGH | May 24, 16:55 UTC | May 25, 09:55 UTC | 17h 0m |
| 2026-05-24 | CXA8818 | HRB → HGH | May 24, 10:05 UTC | May 25, 09:30 UTC | 23h 25m |
| 2026-05-24 | CXA8818 | HRB → HGH | May 24, 00:35 UTC | May 24, 16:55 UTC | 16h 20m |
| 2026-05-23 | CXA8050 | SHE → HGH | May 23, 04:20 UTC | May 24, 01:20 UTC | 21h 1m |
| 2026-05-21 | CXA8555 | PKX → PVG | May 21, 00:40 UTC | May 21, 01:15 UTC | 35m |
| 2026-05-16 | CXA8782 | SYX → FOC | May 16, 08:05 UTC | May 17, 01:25 UTC | 17h 20m |
| 2026-05-16 | CXA8781 | SHE → FOC | May 16, 04:00 UTC | May 17, 01:25 UTC | 21h 25m |
| 2026-05-15 | CXA8781 | SHE → FOC | May 15, 23:30 UTC | May 16, 08:16 UTC | 8h 46m |
| 2026-05-12 | CXA8048 | - | May 12, 11:25 UTC | May 12, 13:51 UTC | 2h 25m |
| 2026-05-11 | CXA8048 | - | May 11, 12:30 UTC | May 12, 11:35 UTC | 23h 6m |
| 2026-05-05 | CXA8221 | - | May 5, 05:35 UTC | May 5, 05:45 UTC | 10m |
| 2026-05-02 | CXA8376 | NNG → XMN | May 2, 07:05 UTC | May 2, 07:15 UTC | 10m |
| 2026-05-02 | CXA8375 | XMN → NNG | May 2, 04:00 UTC | May 2, 04:20 UTC | 20m |
| 2026-04-29 | CXA8375 | XMN → NNG | Apr 29, 23:55 UTC | Apr 30, 03:05 UTC | 3h 10m |
| 2026-04-29 | CXA8080 | DLC → XMN | Apr 29, 09:25 UTC | Apr 29, 09:45 UTC | 20m |
| 2026-04-24 | CXA8781 | SHE → FOC | Apr 24, 23:45 UTC | Apr 25, 09:15 UTC | 9h 30m |
| 2026-04-24 | CXA8781 | SHE → FOC | Apr 24, 09:00 UTC | Apr 25, 05:00 UTC | 20h 0m |
| 2026-04-23 | CXA8088 | SHE → HGH | Apr 23, 23:50 UTC | Apr 24, 23:45 UTC | 23h 55m |
| 2026-04-23 | CXA8088 | SHE → HGH | Apr 23, 23:20 UTC | Apr 24, 09:00 UTC | 9h 40m |
| 2026-04-23 | CXA8088 | SHE → HGH | Apr 23, 09:05 UTC | Apr 23, 23:50 UTC | 14h 45m |
| 2026-04-22 | CXA8088 | SHE → HGH | Apr 22, 23:50 UTC | Apr 23, 23:25 UTC | 23h 35m |
| 2026-04-21 | CXA8048 | - | Apr 21, 11:20 UTC | Apr 21, 14:05 UTC | 2h 45m |
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-7826 page for operator, model, and routing details .