sensors Mode-S transponder
7812BD
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1357 · BOEING 787-9 Dreamliner
- Hex
- 7812BD
- Octal
- 36011275
- Decimal
- 7,869,117
- Country
- CN
- Tail
- B-1357
- Type
- B789
- Flights observed
- 77
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- 10d ago
Last known position
Country allocation
The ICAO 24-bit address 7812BD 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CXA804 | Xiamen Airlines | 10 | 2026-05-10 |
| CXA803 | - | 8 | 2026-05-09 |
| CXA802 | - | 8 | 2026-04-29 |
| CXA812 | - | 7 | 2026-05-04 |
| CXA801 | - | 6 | 2026-04-28 |
| CXA849 | Xiamen Airlines | 5 | 2026-05-18 |
| CXA829 | - | 5 | 2026-04-30 |
| CXA811 | - | 5 | 2026-05-03 |
| CXA806 | - | 5 | 2026-04-14 |
| CXA850 | Xiamen Airlines | 3 | 2026-05-18 |
| CXA830 | Xiamen Airlines | 3 | 2026-05-01 |
| CXA825 | - | 3 | 2026-05-06 |
| CXA826 | - | 2 | 2026-05-07 |
| CXA816 | Xiamen Airlines | 2 | 2026-05-02 |
| CXA815 | Xiamen Airlines | 2 | 2026-05-02 |
| CXA809 | Xiamen Airlines | 2 | 2026-05-17 |
| CXA805 | - | 1 | 2026-04-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-18 | CXA850 | HGH → FOC | May 18, 18:45 UTC | May 19, 08:55 UTC | 14h 10m |
| 2026-05-18 | CXA849 | FOC → JFK | May 18, 02:55 UTC | May 18, 16:20 UTC | 13h 25m |
| 2026-05-17 | CXA849 | FOC → JFK | May 17, 07:20 UTC | May 18, 04:25 UTC | 21h 5m |
| 2026-05-17 | CXA849 | FOC → JFK | May 17, 06:45 UTC | May 18, 04:25 UTC | 21h 40m |
| 2026-05-17 | CXA809 | FOC → NRT | May 17, 03:10 UTC | May 17, 04:35 UTC | 1h 25m |
| 2026-05-16 | CXA809 | FOC → NRT | May 16, 07:20 UTC | May 17, 04:35 UTC | 21h 15m |
| 2026-05-15 | CXA850 | HGH → FOC | May 15, 18:50 UTC | May 16, 08:31 UTC | 13h 41m |
| 2026-05-15 | CXA849 | FOC → JFK | May 15, 03:05 UTC | May 15, 16:30 UTC | 13h 24m |
| 2026-05-12 | CXA850 | HGH → FOC | May 12, 02:45 UTC | May 12, 13:45 UTC | 11h 0m |
| 2026-05-11 | CXA849 | FOC → JFK | May 11, 06:55 UTC | May 11, 20:40 UTC | 13h 46m |
| 2026-05-10 | CXA804 | MEL → XMN | May 10, 01:55 UTC | May 10, 10:35 UTC | 8h 40m |
| 2026-05-09 | CXA803 | - | May 9, 14:20 UTC | May 9, 22:45 UTC | 8h 25m |
| 2026-05-09 | CXA804 | MEL → XMN | May 9, 01:40 UTC | May 9, 10:30 UTC | 8h 50m |
| 2026-05-08 | CXA803 | - | May 8, 14:55 UTC | May 8, 22:55 UTC | 8h 0m |
| 2026-05-07 | CXA826 | - | May 7, 16:10 UTC | May 8, 15:15 UTC | 23h 5m |
| 2026-05-07 | CXA826 | - | May 7, 10:50 UTC | May 7, 16:50 UTC | 6h 0m |
| 2026-05-06 | CXA825 | - | May 6, 09:20 UTC | May 7, 04:40 UTC | 19h 19m |
| 2026-05-06 | CXA825 | - | May 6, 08:45 UTC | May 7, 04:40 UTC | 19h 54m |
| 2026-05-06 | CXA825 | - | May 6, 05:35 UTC | May 7, 04:40 UTC | 23h 4m |
| 2026-05-06 | CXA804 | MEL → XMN | May 6, 01:45 UTC | May 7, 01:15 UTC | 23h 29m |
| 2026-05-05 | CXA803 | DRW → MEL | May 5, 05:30 UTC | May 5, 23:50 UTC | 18h 20m |
| 2026-05-05 | CXA804 | MEL → XMN | May 5, 01:50 UTC | May 5, 23:50 UTC | 22h 0m |
| 2026-05-04 | CXA803 | - | May 4, 16:50 UTC | May 5, 00:15 UTC | 7h 26m |
| 2026-05-04 | CXA803 | - | May 4, 01:20 UTC | May 5, 00:15 UTC | 22h 56m |
| 2026-05-04 | CXA812 | - | May 4, 00:50 UTC | May 4, 20:40 UTC | 19h 51m |
| 2026-05-03 | CXA812 | - | May 3, 21:20 UTC | May 4, 20:40 UTC | 23h 21m |
| 2026-05-03 | CXA812 | - | May 3, 19:50 UTC | May 4, 17:20 UTC | 21h 30m |
| 2026-05-03 | CXA811 | - | May 3, 09:55 UTC | May 3, 16:50 UTC | 6h 55m |
| 2026-05-02 | CXA816 | NRT → XMN | May 2, 06:15 UTC | May 2, 07:40 UTC | 1h 25m |
| 2026-05-02 | CXA815 | XMN → NRT | May 2, 03:00 UTC | May 2, 04:20 UTC | 1h 20m |
| 2026-05-01 | CXA830 | LAX → XMN | May 1, 07:10 UTC | May 1, 19:20 UTC | 12h 10m |
| 2026-04-30 | CXA829 | - | Apr 30, 15:00 UTC | May 1, 02:25 UTC | 11h 25m |
| 2026-04-30 | CXA804 | MEL → XMN | Apr 30, 03:35 UTC | Apr 30, 11:50 UTC | 8h 15m |
| 2026-04-29 | CXA803 | - | Apr 29, 08:34 UTC | Apr 30, 02:00 UTC | 17h 25m |
| 2026-04-29 | CXA802 | - | Apr 29, 01:45 UTC | Apr 29, 22:25 UTC | 20h 41m |
| 2026-04-28 | CXA801 | - | Apr 28, 14:55 UTC | Apr 28, 23:29 UTC | 8h 35m |
| 2026-04-27 | CXA830 | LAX → XMN | Apr 27, 07:05 UTC | Apr 27, 19:25 UTC | 12h 20m |
| 2026-04-26 | CXA829 | - | Apr 26, 09:20 UTC | Apr 27, 03:35 UTC | 18h 15m |
| 2026-04-26 | CXA829 | - | Apr 26, 08:25 UTC | Apr 27, 03:35 UTC | 19h 10m |
| 2026-04-26 | CXA829 | - | Apr 26, 05:20 UTC | Apr 27, 03:35 UTC | 22h 15m |
| 2026-04-26 | CXA804 | MEL → XMN | Apr 26, 01:45 UTC | Apr 26, 18:10 UTC | 16h 25m |
| 2026-04-25 | CXA804 | MEL → XMN | Apr 25, 05:20 UTC | Apr 25, 23:15 UTC | 17h 55m |
| 2026-04-25 | CXA804 | MEL → XMN | Apr 25, 01:40 UTC | Apr 25, 23:15 UTC | 21h 35m |
| 2026-04-24 | CXA803 | - | Apr 24, 09:30 UTC | Apr 24, 23:40 UTC | 14h 10m |
| 2026-04-24 | CXA804 | MEL → XMN | Apr 24, 02:40 UTC | Apr 24, 23:40 UTC | 21h 0m |
| 2026-04-23 | CXA803 | - | Apr 23, 16:25 UTC | Apr 24, 00:50 UTC | 8h 24m |
| 2026-04-23 | CXA816 | NRT → XMN | Apr 23, 06:10 UTC | Apr 23, 07:40 UTC | 1h 30m |
| 2026-04-23 | CXA815 | XMN → NRT | Apr 23, 03:10 UTC | Apr 23, 04:20 UTC | 1h 10m |
| 2026-04-22 | CXA830 | LAX → XMN | Apr 22, 07:15 UTC | Apr 22, 21:20 UTC | 14h 5m |
| 2026-04-21 | CXA829 | - | Apr 21, 16:40 UTC | Apr 22, 02:40 UTC | 10h 0m |
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-1357 page for operator, model, and routing details .