sensors Mode-S transponder
781209
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1301 · BOEING 737-800
- Hex
- 781209
- Octal
- 36011011
- Decimal
- 7,868,937
- Country
- CN
- Tail
- B-1301
- Type
- B738
- Flights observed
- 23
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 781209 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 |
|---|---|---|---|
| CXA878 | Xiamen Airlines | 2 | 2026-04-21 |
| CXA8605 | Xiamen Airlines | 2 | 2026-04-20 |
| CXA8221 | - | 2 | 2026-05-26 |
| CXA8867 | - | 1 | 2026-05-29 |
| CXA8828 | Xiamen Airlines | 1 | 2026-05-31 |
| CXA8790 | - | 1 | 2026-04-27 |
| CXA877 | Xiamen Airlines | 1 | 2026-04-21 |
| CXA870 | Xiamen Airlines | 1 | 2026-05-14 |
| CXA8692 | - | 1 | 2026-05-23 |
| CXA8691 | - | 1 | 2026-05-23 |
| CXA8666 | Xiamen Airlines | 1 | 2026-05-03 |
| CXA8665 | Xiamen Airlines | 1 | 2026-05-03 |
| CXA8606 | Xiamen Airlines | 1 | 2026-04-15 |
| CXA8555 | Xiamen Airlines | 1 | 2026-05-01 |
| CXA8536 | - | 1 | 2026-04-29 |
| CXA8343 | - | 1 | 2026-05-31 |
| CXA8222 | - | 1 | 2026-05-12 |
| CXA820 | Xiamen Airlines | 1 | 2026-06-02 |
| CXA819 | Xiamen Airlines | 1 | 2026-06-02 |
| CXA8044 | Xiamen Airlines | 1 | 2026-05-16 |
Recent flights last 23
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | CXA820 | MNL → XMN | Jun 2, 14:10 UTC | Jun 2, 15:25 UTC | 1h 15m |
| 2026-06-02 | CXA819 | XMN → MNL | Jun 2, 11:05 UTC | Jun 2, 12:25 UTC | 1h 20m |
| 2026-05-31 | CXA8828 | ZUH → XMN | May 31, 14:05 UTC | May 31, 14:25 UTC | 20m |
| 2026-05-31 | CXA8343 | - | May 31, 12:05 UTC | May 31, 12:30 UTC | 25m |
| 2026-05-29 | CXA8867 | - | May 29, 00:50 UTC | May 29, 01:10 UTC | 20m |
| 2026-05-26 | CXA8221 | - | May 26, 05:40 UTC | May 26, 05:49 UTC | 10m |
| 2026-05-23 | CXA8692 | - | May 23, 06:10 UTC | May 23, 06:30 UTC | 20m |
| 2026-05-23 | CXA8691 | - | May 23, 04:10 UTC | May 23, 04:40 UTC | 30m |
| 2026-05-18 | CXA8221 | - | May 18, 05:45 UTC | May 18, 05:55 UTC | 10m |
| 2026-05-16 | CXA8044 | CGQ → HGH | May 16, 06:45 UTC | May 16, 07:16 UTC | 30m |
| 2026-05-14 | CXA870 | HAN → XMN | May 14, 09:55 UTC | May 15, 02:20 UTC | 16h 25m |
| 2026-05-12 | CXA8222 | - | May 12, 03:50 UTC | May 12, 04:00 UTC | 10m |
| 2026-05-03 | CXA8666 | KHH → XMN | May 3, 12:25 UTC | May 3, 12:40 UTC | 15m |
| 2026-05-03 | CXA8665 | XMN → KHH | May 3, 10:50 UTC | May 3, 11:15 UTC | 25m |
| 2026-05-01 | CXA8555 | PKX → PVG | May 1, 00:30 UTC | May 1, 10:10 UTC | 9h 40m |
| 2026-04-29 | CXA8536 | - | Apr 29, 08:45 UTC | Apr 30, 01:15 UTC | 16h 30m |
| 2026-04-27 | CXA8790 | - | Apr 27, 01:50 UTC | Apr 27, 07:20 UTC | 5h 30m |
| 2026-04-21 | CXA878 | ICN → FOC | Apr 21, 12:20 UTC | Apr 22, 07:35 UTC | 19h 15m |
| 2026-04-21 | CXA878 | ICN → FOC | Apr 21, 12:10 UTC | Apr 22, 07:35 UTC | 19h 25m |
| 2026-04-21 | CXA877 | FOC → ICN | Apr 21, 08:50 UTC | Apr 21, 09:20 UTC | 30m |
| 2026-04-20 | CXA8605 | FOC → NNG | Apr 20, 13:05 UTC | Apr 20, 16:25 UTC | 3h 20m |
| 2026-04-15 | CXA8606 | NNG → FOC | Apr 15, 15:05 UTC | Apr 15, 15:15 UTC | 10m |
| 2026-04-15 | CXA8605 | FOC → NNG | Apr 15, 12:05 UTC | Apr 15, 12:30 UTC | 25m |
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-1301 page for operator, model, and routing details .