sensors Mode-S transponder
7809E2
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5739 · BOEING 737-800
- Hex
- 7809E2
- Octal
- 36004742
- Decimal
- 7,866,850
- Country
- CN
- Tail
- B-5739
- Type
- B738
- Flights observed
- 64
- Distinct callsigns
- 19
- Country
- CN
- Last broadcast
- Jul 26, 11:20 UTC
Last known position
Country allocation
The ICAO 24-bit address 7809E2 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 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN3094 | China Southern Airlines | 14 | 2026-07-26 |
| CSN3093 | China Southern Airlines | 14 | 2026-07-26 |
| CSN3356 | China Southern Airlines | 5 | 2026-06-21 |
| CSN3355 | - | 4 | 2026-06-21 |
| CSN8666 | - | 3 | 2026-06-23 |
| CSN8464 | China Southern Airlines | 3 | 2026-06-12 |
| CSN8463 | China Southern Airlines | 3 | 2026-06-11 |
| CSN3845 | China Southern Airlines | 3 | 2026-07-25 |
| CSN8318 | - | 2 | 2026-07-11 |
| CSN8317 | China Southern Airlines | 2 | 2026-05-11 |
| CSN3780 | China Southern Airlines | 2 | 2026-07-24 |
| CSN3631 | China Southern Airlines | 2 | 2026-06-04 |
| CSN8665 | - | 1 | 2026-06-22 |
| CSN8280 | China Southern Airlines | 1 | 2026-04-28 |
| CSN8279 | China Southern Airlines | 1 | 2026-04-25 |
| CSN8269 | - | 1 | 2026-07-06 |
| CSN3774 | China Southern Airlines | 1 | 2026-04-19 |
| CSN3773 | China Southern Airlines | 1 | 2026-04-19 |
| CSN3347 | China Southern Airlines | 1 | 2026-06-15 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CSN3094 | KHH → WUH | Jul 26, 04:15 UTC | Jul 26, 11:20 UTC | 7h 6m |
| 2026-07-26 | CSN3093 | WUH → KHH | Jul 26, 01:00 UTC | Jul 26, 02:15 UTC | 1h 15m |
| 2026-07-25 | CSN3845 | WUH → ZUH | Jul 25, 01:35 UTC | Jul 25, 01:55 UTC | 20m |
| 2026-07-24 | CSN3845 | WUH → ZUH | Jul 24, 04:55 UTC | Jul 25, 01:55 UTC | 21h 0m |
| 2026-07-24 | CSN3780 | NGB → CAN | Jul 24, 01:15 UTC | Jul 24, 05:15 UTC | 4h 0m |
| 2026-07-16 | CSN3094 | - | Jul 16, 04:05 UTC | Jul 16, 04:45 UTC | 40m |
| 2026-07-16 | CSN3093 | - | Jul 16, 01:30 UTC | Jul 16, 02:30 UTC | 1h 0m |
| 2026-07-14 | CSN3094 | - | Jul 14, 04:10 UTC | Jul 14, 09:55 UTC | 5h 45m |
| 2026-07-14 | CSN3093 | - | Jul 14, 01:40 UTC | Jul 14, 02:45 UTC | 1h 5m |
| 2026-07-11 | CSN8318 | - | Jul 11, 04:20 UTC | Jul 11, 21:00 UTC | 16h 40m |
| 2026-07-11 | CSN8318 | - | Jul 11, 01:05 UTC | Jul 11, 21:00 UTC | 19h 55m |
| 2026-07-06 | CSN8269 | - | Jul 6, 07:05 UTC | Jul 6, 07:20 UTC | 15m |
| 2026-07-02 | CSN3094 | - | Jul 2, 04:00 UTC | Jul 2, 04:50 UTC | 50m |
| 2026-07-01 | CSN3093 | - | Jul 1, 09:40 UTC | Jul 2, 02:30 UTC | 16h 50m |
| 2026-06-27 | CSN3780 | - | Jun 27, 01:09 UTC | Jun 27, 04:34 UTC | 3h 25m |
| 2026-06-23 | CSN8666 | - | Jun 23, 04:00 UTC | Jun 23, 08:39 UTC | 4h 40m |
| 2026-06-22 | CSN8666 | - | Jun 22, 08:35 UTC | Jun 23, 08:30 UTC | 23h 55m |
| 2026-06-22 | CSN8666 | - | Jun 22, 08:25 UTC | Jun 23, 04:14 UTC | 19h 50m |
| 2026-06-22 | CSN8665 | - | Jun 22, 03:50 UTC | Jun 22, 08:50 UTC | 5h 0m |
| 2026-06-21 | CSN3356 | SZX → WUH | Jun 21, 11:20 UTC | Jun 21, 11:30 UTC | 10m |
| 2026-06-21 | CSN3355 | - | Jun 21, 09:15 UTC | Jun 21, 09:29 UTC | 15m |
| 2026-06-21 | CSN3094 | - | Jun 21, 04:10 UTC | Jun 21, 05:10 UTC | 1h 0m |
| 2026-06-21 | CSN3093 | - | Jun 21, 01:14 UTC | Jun 21, 02:10 UTC | 55m |
| 2026-06-18 | CSN3356 | SZX → WUH | Jun 18, 15:15 UTC | Jun 18, 15:30 UTC | 15m |
| 2026-06-18 | CSN3355 | - | Jun 18, 12:30 UTC | Jun 18, 12:50 UTC | 20m |
| 2026-06-18 | CSN3094 | - | Jun 18, 03:55 UTC | Jun 18, 04:45 UTC | 50m |
| 2026-06-18 | CSN3093 | - | Jun 18, 01:30 UTC | Jun 18, 02:30 UTC | 1h 0m |
| 2026-06-16 | CSN3094 | - | Jun 16, 04:00 UTC | Jun 16, 05:05 UTC | 1h 5m |
| 2026-06-16 | CSN3093 | - | Jun 16, 01:15 UTC | Jun 16, 02:09 UTC | 55m |
| 2026-06-15 | CSN3347 | WUH → CAN | Jun 15, 15:19 UTC | Jun 15, 15:30 UTC | 10m |
| 2026-06-12 | CSN8464 | SZX → WUH | Jun 12, 00:20 UTC | Jun 12, 00:35 UTC | 15m |
| 2026-06-11 | CSN8463 | WUH → SZX | Jun 11, 16:25 UTC | Jun 11, 16:50 UTC | 25m |
| 2026-06-11 | CSN3355 | WUH → SZX | Jun 11, 09:05 UTC | Jun 11, 09:20 UTC | 15m |
| 2026-06-11 | CSN3094 | KHH → WUH | Jun 11, 04:00 UTC | Jun 11, 05:05 UTC | 1h 5m |
| 2026-06-11 | CSN3093 | WUH → KHH | Jun 11, 01:25 UTC | Jun 11, 02:25 UTC | 1h 0m |
| 2026-06-07 | CSN3356 | SZX → WUH | Jun 7, 14:25 UTC | Jun 7, 14:35 UTC | 10m |
| 2026-06-07 | CSN3094 | KHH → WUH | Jun 7, 04:05 UTC | Jun 7, 04:55 UTC | 50m |
| 2026-06-06 | CSN3093 | WUH → KHH | Jun 6, 09:55 UTC | Jun 7, 02:25 UTC | 16h 30m |
| 2026-06-05 | CSN8464 | SZX → WUH | Jun 5, 00:25 UTC | Jun 5, 00:35 UTC | 10m |
| 2026-06-04 | CSN8463 | WUH → SZX | Jun 4, 17:15 UTC | Jun 4, 17:35 UTC | 20m |
| 2026-06-04 | CSN3631 | SZX → HZA | Jun 4, 00:50 UTC | Jun 4, 05:40 UTC | 4h 50m |
| 2026-05-28 | CSN8464 | SZX → WUH | May 28, 00:20 UTC | May 28, 00:30 UTC | 10m |
| 2026-05-27 | CSN8463 | WUH → SZX | May 27, 14:25 UTC | May 27, 14:45 UTC | 20m |
| 2026-05-21 | CSN3356 | SZX → WUH | May 21, 17:15 UTC | May 21, 17:25 UTC | 10m |
| 2026-05-21 | CSN3355 | WUH → SZX | May 21, 14:25 UTC | May 21, 14:55 UTC | 30m |
| 2026-05-21 | CSN3094 | KHH → WUH | May 21, 04:10 UTC | May 21, 04:50 UTC | 40m |
| 2026-05-21 | CSN3093 | WUH → KHH | May 21, 01:20 UTC | May 21, 02:10 UTC | 50m |
| 2026-05-14 | CSN3356 | SZX → WUH | May 14, 14:30 UTC | May 14, 14:40 UTC | 10m |
| 2026-05-14 | CSN3094 | KHH → WUH | May 14, 04:05 UTC | May 14, 04:51 UTC | 45m |
| 2026-05-14 | CSN3093 | WUH → KHH | May 14, 01:15 UTC | May 14, 02:15 UTC | 1h 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-5739 page for operator, model, and routing details .