sensors Mode-S transponder
7810B3
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1580 · BOEING 737-800
- Hex
- 7810B3
- Octal
- 36010263
- Decimal
- 7,868,595
- Country
- CN
- Tail
- B-1580
- Type
- B738
- Flights observed
- 38
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 7h ago
Last known position
Country allocation
The ICAO 24-bit address 7810B3 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 |
|---|---|---|---|
| CXA8781 | Xiamen Airlines | 6 | 2026-06-09 |
| CXA8818 | Xiamen Airlines | 2 | 2026-05-21 |
| CXA8697 | Xiamen Airlines | 2 | 2026-05-17 |
| CXA8523 | - | 2 | 2026-05-22 |
| CXA8044 | Xiamen Airlines | 2 | 2026-06-11 |
| CXA895 | Xiamen Airlines | 1 | 2026-06-10 |
| CXA8902 | - | 1 | 2026-05-01 |
| CXA8901 | - | 1 | 2026-05-01 |
| CXA8871 | - | 1 | 2026-06-02 |
| CXA8791 | Xiamen Airlines | 1 | 2026-06-19 |
| CXA8727 | Xiamen Airlines | 1 | 2026-05-16 |
| CXA8698 | Xiamen Airlines | 1 | 2026-05-25 |
| CXA8692 | - | 1 | 2026-05-12 |
| CXA8691 | - | 1 | 2026-05-12 |
| CXA869 | Xiamen Airlines | 1 | 2026-05-18 |
| CXA8623 | - | 1 | 2026-06-02 |
| CXA8526 | - | 1 | 2026-05-17 |
| CXA8365 | Xiamen Airlines | 1 | 2026-04-21 |
| CXA8346 | Xiamen Airlines | 1 | 2026-06-02 |
| CXA8344 | Xiamen Airlines | 1 | 2026-06-19 |
Recent flights last 38
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-19 | CXA8344 | SZX → HGH | Jun 19, 14:34 UTC | Jun 19, 14:44 UTC | 10m |
| 2026-06-19 | CXA8791 | FOC → HAK | Jun 19, 12:34 UTC | Jun 19, 13:04 UTC | 30m |
| 2026-06-17 | CXA8070 | - | Jun 17, 11:25 UTC | Jun 17, 12:00 UTC | 35m |
| 2026-06-11 | CXA8044 | CGQ → HGH | Jun 11, 07:15 UTC | Jun 11, 07:30 UTC | 15m |
| 2026-06-10 | CXA895 | XMN → PNH | Jun 10, 07:50 UTC | Jun 10, 08:00 UTC | 10m |
| 2026-06-09 | CXA8781 | SHE → FOC | Jun 9, 04:15 UTC | Jun 9, 08:10 UTC | 3h 55m |
| 2026-06-09 | CXA8781 | SHE → FOC | Jun 9, 01:35 UTC | Jun 9, 02:05 UTC | 30m |
| 2026-06-08 | CXA8781 | SHE → FOC | Jun 8, 04:25 UTC | Jun 8, 08:55 UTC | 4h 30m |
| 2026-06-07 | CXA8781 | SHE → FOC | Jun 7, 00:14 UTC | Jun 7, 08:05 UTC | 7h 50m |
| 2026-06-06 | CXA8781 | SHE → FOC | Jun 6, 07:40 UTC | Jun 7, 04:30 UTC | 20h 50m |
| 2026-06-06 | CXA8781 | SHE → FOC | Jun 6, 04:50 UTC | Jun 7, 04:30 UTC | 23h 40m |
| 2026-06-02 | CXA8346 | SZX → HGH | Jun 2, 14:45 UTC | Jun 2, 14:55 UTC | 10m |
| 2026-06-02 | CXA8871 | - | Jun 2, 07:10 UTC | Jun 2, 07:20 UTC | 10m |
| 2026-06-02 | CXA8623 | - | Jun 2, 01:35 UTC | Jun 2, 01:45 UTC | 10m |
| 2026-06-01 | CXA8088 | SHE → HGH | Jun 1, 00:00 UTC | Jun 1, 13:55 UTC | 13h 55m |
| 2026-05-31 | CXA8096 | SHE → PVG | May 31, 09:15 UTC | Jun 1, 00:00 UTC | 14h 45m |
| 2026-05-30 | CXA8044 | CGQ → HGH | May 30, 07:00 UTC | May 30, 07:25 UTC | 25m |
| 2026-05-29 | CXA820 | MNL → XMN | May 29, 16:10 UTC | May 29, 17:45 UTC | 1h 35m |
| 2026-05-29 | CXA819 | XMN → MNL | May 29, 07:35 UTC | May 29, 15:05 UTC | 7h 30m |
| 2026-05-28 | CXA8230 | TSN → HGH | May 28, 03:55 UTC | May 28, 12:30 UTC | 8h 35m |
| 2026-05-25 | CXA8698 | HAN → FOC | May 25, 10:40 UTC | May 25, 10:55 UTC | 15m |
| 2026-05-22 | CXA8523 | - | May 22, 13:55 UTC | May 22, 14:20 UTC | 25m |
| 2026-05-21 | CXA8818 | HRB → HGH | May 21, 09:40 UTC | May 22, 07:00 UTC | 21h 20m |
| 2026-05-21 | CXA8079 | XMN → DLC | May 21, 00:25 UTC | May 21, 09:55 UTC | 9h 30m |
| 2026-05-18 | CXA869 | XMN → HAN | May 18, 06:01 UTC | May 18, 10:10 UTC | 4h 10m |
| 2026-05-17 | CXA8526 | - | May 17, 13:50 UTC | May 18, 02:05 UTC | 12h 15m |
| 2026-05-17 | CXA8697 | FOC → HAN | May 17, 07:10 UTC | May 17, 11:01 UTC | 3h 50m |
| 2026-05-17 | CXA8697 | FOC → HAN | May 17, 02:20 UTC | May 17, 02:30 UTC | 10m |
| 2026-05-16 | CXA8727 | TAO → FOC | May 16, 04:50 UTC | May 17, 02:30 UTC | 21h 40m |
| 2026-05-15 | CXA8523 | - | May 15, 13:45 UTC | May 16, 05:05 UTC | 15h 19m |
| 2026-05-12 | CXA8692 | - | May 12, 04:35 UTC | May 12, 04:50 UTC | 15m |
| 2026-05-12 | CXA8691 | - | May 12, 02:55 UTC | May 12, 03:10 UTC | 15m |
| 2026-05-07 | - | - | May 7, 00:55 UTC | May 7, 09:15 UTC | 8h 20m |
| 2026-05-05 | CXA8818 | HRB → HGH | May 5, 09:05 UTC | May 5, 14:40 UTC | 5h 35m |
| 2026-05-04 | CXA8051 | - | May 4, 15:30 UTC | May 5, 14:40 UTC | 23h 11m |
| 2026-05-01 | CXA8902 | - | May 1, 05:40 UTC | May 1, 06:05 UTC | 25m |
| 2026-05-01 | CXA8901 | - | May 1, 02:45 UTC | May 1, 03:25 UTC | 40m |
| 2026-04-21 | CXA8365 | TSN → SZX | Apr 21, 10:20 UTC | Apr 21, 10:30 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-1580 page for operator, model, and routing details .