sensors Mode-S transponder
7818C7
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-20EA · BOEING 737 MAX 8
- Hex
- 7818C7
- Octal
- 36014307
- Decimal
- 7,870,663
- Country
- CN
- Tail
- B-20EA
- Type
- B38M
- Flights observed
- 73
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 7818C7 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 |
|---|---|---|---|
| CXA892 | Xiamen Airlines | 8 | 2026-05-19 |
| CXA823 | Xiamen Airlines | 6 | 2026-05-27 |
| CXA824 | Xiamen Airlines | 5 | 2026-05-28 |
| CXA868 | Xiamen Airlines | 4 | 2026-05-29 |
| CXA8372 | Xiamen Airlines | 4 | 2026-05-12 |
| CXA891 | Xiamen Airlines | 3 | 2026-04-14 |
| CXA8882 | Xiamen Airlines | 3 | 2026-05-05 |
| CXA8881 | Xiamen Airlines | 3 | 2026-05-05 |
| CXA848 | Xiamen Airlines | 3 | 2026-05-20 |
| CXA898 | Xiamen Airlines | 2 | 2026-04-30 |
| CXA897 | Xiamen Airlines | 2 | 2026-04-30 |
| CXA867 | Xiamen Airlines | 2 | 2026-05-29 |
| CXA866 | Xiamen Airlines | 2 | 2026-05-01 |
| CXA865 | Xiamen Airlines | 2 | 2026-05-01 |
| CXA847 | Xiamen Airlines | 2 | 2026-05-16 |
| CXA8379 | Xiamen Airlines | 2 | 2026-05-30 |
| CXA8375 | Xiamen Airlines | 2 | 2026-05-22 |
| CXA8371 | Xiamen Airlines | 2 | 2026-05-05 |
| CXA8032 | Xiamen Airlines | 2 | 2026-05-10 |
| CXA8828 | Xiamen Airlines | 1 | 2026-05-07 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | CXA8380 | SZX → TSN | May 30, 04:15 UTC | May 30, 04:25 UTC | 10m |
| 2026-05-30 | CXA8379 | TSN → SZX | May 30, 02:10 UTC | May 30, 02:20 UTC | 10m |
| 2026-05-29 | CXA868 | CGK → XMN | May 29, 11:45 UTC | May 29, 12:10 UTC | 25m |
| 2026-05-29 | CXA868 | CGK → XMN | May 29, 07:00 UTC | May 29, 08:25 UTC | 1h 25m |
| 2026-05-29 | CXA867 | XMN → CGK | May 29, 02:35 UTC | May 29, 03:05 UTC | 30m |
| 2026-05-28 | CXA824 | KUL → XMN | May 28, 00:05 UTC | May 28, 00:25 UTC | 20m |
| 2026-05-27 | CXA823 | XMN → KUL | May 27, 16:00 UTC | May 27, 16:35 UTC | 35m |
| 2026-05-27 | CXA824 | KUL → XMN | May 27, 00:14 UTC | May 27, 00:39 UTC | 25m |
| 2026-05-25 | CXA823 | XMN → KUL | May 25, 23:14 UTC | May 26, 16:20 UTC | 17h 5m |
| 2026-05-24 | CXA824 | KUL → XMN | May 24, 00:15 UTC | May 24, 14:15 UTC | 14h 0m |
| 2026-05-23 | CXA823 | XMN → KUL | May 23, 12:40 UTC | May 23, 15:50 UTC | 3h 10m |
| 2026-05-22 | CXA8375 | XMN → NNG | May 22, 23:40 UTC | May 23, 00:00 UTC | 20m |
| 2026-05-22 | CXA8375 | XMN → NNG | May 22, 03:05 UTC | May 23, 00:00 UTC | 20h 55m |
| 2026-05-22 | CXA824 | KUL → XMN | May 22, 00:10 UTC | May 22, 23:45 UTC | 23h 35m |
| 2026-05-21 | CXA823 | XMN → KUL | May 21, 12:15 UTC | May 21, 15:30 UTC | 3h 15m |
| 2026-05-21 | CXA8550 | SHA → FOC | May 21, 09:50 UTC | May 21, 10:10 UTC | 20m |
| 2026-05-20 | CXA848 | KUL → XMN | May 20, 06:40 UTC | May 20, 07:10 UTC | 30m |
| 2026-05-19 | CXA892 | DPS → XMN | May 19, 10:30 UTC | May 20, 05:00 UTC | 18h 31m |
| 2026-05-19 | CXA8536 | - | May 19, 07:05 UTC | May 19, 07:40 UTC | 35m |
| 2026-05-16 | CXA848 | KUL → XMN | May 16, 06:55 UTC | May 16, 07:16 UTC | 20m |
| 2026-05-16 | CXA847 | XMN → KUL | May 16, 01:40 UTC | May 16, 05:15 UTC | 3h 35m |
| 2026-05-12 | CXA8318 | SZX → SHA | May 12, 13:10 UTC | May 12, 13:25 UTC | 15m |
| 2026-05-12 | CXA8317 | SHA → SZX | May 12, 11:15 UTC | May 12, 11:35 UTC | 20m |
| 2026-05-12 | CXA8372 | SZX → SHA | May 12, 04:05 UTC | May 12, 04:15 UTC | 10m |
| 2026-05-11 | CXA848 | KUL → XMN | May 11, 07:05 UTC | May 11, 07:30 UTC | 25m |
| 2026-05-11 | CXA847 | XMN → KUL | May 11, 04:45 UTC | May 11, 05:05 UTC | 20m |
| 2026-05-10 | CXA892 | DPS → XMN | May 10, 12:30 UTC | May 10, 20:50 UTC | 8h 20m |
| 2026-05-10 | CXA8032 | SHE → XMN | May 10, 07:40 UTC | May 10, 08:10 UTC | 30m |
| 2026-05-09 | CXA824 | KUL → XMN | May 9, 00:05 UTC | May 9, 00:25 UTC | 20m |
| 2026-05-08 | CXA823 | XMN → KUL | May 8, 12:10 UTC | May 8, 15:25 UTC | 3h 15m |
| 2026-05-07 | CXA8828 | ZUH → XMN | May 7, 14:00 UTC | May 7, 14:10 UTC | 10m |
| 2026-05-07 | CXA8827 | XMN → ZUH | May 7, 11:50 UTC | May 7, 12:05 UTC | 15m |
| 2026-05-05 | CXA8882 | ZUH → SHA | May 5, 11:25 UTC | May 5, 11:35 UTC | 10m |
| 2026-05-05 | CXA8881 | SHA → ZUH | May 5, 09:35 UTC | May 5, 09:50 UTC | 15m |
| 2026-05-05 | CXA8372 | SZX → SHA | May 5, 04:15 UTC | May 5, 04:25 UTC | 10m |
| 2026-05-05 | CXA8371 | SHA → SZX | May 5, 02:25 UTC | May 5, 02:45 UTC | 20m |
| 2026-05-03 | CXA8882 | ZUH → SHA | May 3, 11:35 UTC | May 3, 11:45 UTC | 10m |
| 2026-05-03 | CXA8881 | SHA → ZUH | May 3, 09:45 UTC | May 3, 10:00 UTC | 15m |
| 2026-05-03 | CXA8372 | SZX → SHA | May 3, 05:05 UTC | May 3, 05:15 UTC | 10m |
| 2026-05-03 | CXA8371 | SHA → SZX | May 3, 02:20 UTC | May 3, 02:40 UTC | 20m |
| 2026-05-02 | CXA8882 | ZUH → SHA | May 2, 11:40 UTC | May 2, 11:50 UTC | 10m |
| 2026-05-02 | CXA8881 | SHA → ZUH | May 2, 09:30 UTC | May 2, 09:55 UTC | 25m |
| 2026-05-02 | CXA8372 | SZX → SHA | May 2, 04:05 UTC | May 2, 04:15 UTC | 10m |
| 2026-05-02 | CXA8379 | TSN → SZX | May 2, 02:05 UTC | May 2, 02:30 UTC | 25m |
| 2026-05-01 | CXA866 | SIN → FOC | May 1, 08:25 UTC | May 1, 08:50 UTC | 25m |
| 2026-05-01 | CXA865 | FOC → SIN | May 1, 02:35 UTC | May 1, 05:50 UTC | 3h 15m |
| 2026-04-30 | CXA898 | KUL → FOC | Apr 30, 10:05 UTC | May 1, 05:50 UTC | 19h 45m |
| 2026-04-30 | CXA897 | FOC → KUL | Apr 30, 07:50 UTC | Apr 30, 08:20 UTC | 30m |
| 2026-04-26 | CXA868 | CGK → XMN | Apr 26, 07:50 UTC | Apr 26, 09:15 UTC | 1h 25m |
| 2026-04-26 | CXA868 | CGK → XMN | Apr 26, 06:45 UTC | Apr 26, 07:00 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-20EA page for operator, model, and routing details .