sensors Mode-S transponder
781099
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8673 · AIRBUS A-320neo
- Hex
- 781099
- Octal
- 36010231
- Decimal
- 7,868,569
- Country
- CN
- Tail
- B-8673
- Type
- A20N
- Flights observed
- 36
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- 8h ago
Last known position
Country allocation
The ICAO 24-bit address 781099 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 |
|---|---|---|---|
| CSN6483 | China Southern Airlines | 7 | 2026-05-19 |
| CSN6465 | China Southern Airlines | 3 | 2026-04-30 |
| CSN6304 | China Southern Airlines | 3 | 2026-05-29 |
| CSN6484 | China Southern Airlines | 2 | 2026-05-07 |
| CSN6456 | China Southern Airlines | 2 | 2026-06-09 |
| CSN6403 | China Southern Airlines | 2 | 2026-06-03 |
| CSN6367 | China Southern Airlines | 2 | 2026-06-07 |
| CSN6347 | China Southern Airlines | 2 | 2026-05-02 |
| CSN6339 | China Southern Airlines | 2 | 2026-06-05 |
| CSN6315 | China Southern Airlines | 2 | 2026-06-08 |
| CSN6310 | China Southern Airlines | 2 | 2026-04-22 |
| CSN6303 | China Southern Airlines | 2 | 2026-05-29 |
| CSN6518 | China Southern Airlines | 1 | 2026-06-01 |
| CSN6466 | China Southern Airlines | 1 | 2026-04-24 |
| CSN6312 | China Southern Airlines | 1 | 2026-05-13 |
| CSN6309 | China Southern Airlines | 1 | 2026-04-22 |
| CSN5386 | China Southern Airlines | 1 | 2026-05-06 |
Recent flights last 36
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-09 | CSN6456 | XIY → SHE | Jun 9, 01:55 UTC | Jun 9, 14:35 UTC | 12h 40m |
| 2026-06-08 | CSN6315 | SHE → CAN | Jun 8, 06:20 UTC | Jun 9, 01:55 UTC | 19h 35m |
| 2026-06-07 | CSN6315 | SHE → CAN | Jun 7, 10:05 UTC | Jun 8, 06:30 UTC | 20h 25m |
| 2026-06-07 | CSN6367 | SHE → CAN | Jun 7, 02:50 UTC | Jun 7, 10:15 UTC | 7h 25m |
| 2026-06-05 | CSN6339 | SHE → CAN | Jun 5, 11:30 UTC | Jun 6, 02:35 UTC | 15h 5m |
| 2026-06-05 | CSN6339 | SHE → CAN | Jun 5, 00:30 UTC | Jun 5, 11:55 UTC | 11h 25m |
| 2026-06-03 | CSN6403 | SHE → CKG | Jun 3, 14:40 UTC | Jun 4, 01:35 UTC | 10h 55m |
| 2026-06-01 | CSN6518 | XMN → SHE | Jun 1, 07:30 UTC | Jun 1, 07:40 UTC | 10m |
| 2026-05-29 | CSN6304 | SZX → SHE | May 29, 14:40 UTC | May 29, 14:50 UTC | 10m |
| 2026-05-29 | CSN6303 | SHE → SZX | May 29, 11:00 UTC | May 29, 11:25 UTC | 25m |
| 2026-05-29 | CSN6303 | SHE → SZX | May 29, 08:30 UTC | May 29, 08:45 UTC | 15m |
| 2026-05-27 | CSN6456 | XIY → SHE | May 27, 14:30 UTC | May 28, 03:10 UTC | 12h 40m |
| 2026-05-26 | CSN6403 | SHE → CKG | May 26, 01:30 UTC | May 26, 07:24 UTC | 5h 55m |
| 2026-05-25 | CSN6304 | SZX → SHE | May 25, 13:30 UTC | May 25, 13:40 UTC | 10m |
| 2026-05-21 | CSN6367 | SHE → CAN | May 21, 02:55 UTC | May 21, 03:20 UTC | 25m |
| 2026-05-19 | CSN6483 | SHE → SYX | May 19, 02:10 UTC | May 19, 02:30 UTC | 20m |
| 2026-05-13 | CSN6312 | SZX → SHE | May 13, 05:55 UTC | May 13, 06:05 UTC | 10m |
| 2026-05-11 | CSN6304 | SZX → SHE | May 11, 13:15 UTC | May 11, 13:30 UTC | 15m |
| 2026-05-08 | CSN6483 | SHE → SYX | May 8, 12:39 UTC | May 9, 02:30 UTC | 13h 50m |
| 2026-05-07 | CSN6484 | SYX → SHE | May 7, 10:35 UTC | May 7, 10:45 UTC | 10m |
| 2026-05-06 | CSN5386 | SZX → SYX | May 6, 14:15 UTC | May 6, 14:30 UTC | 15m |
| 2026-05-04 | CSN6484 | SYX → SHE | May 4, 10:25 UTC | May 5, 03:05 UTC | 16h 41m |
| 2026-05-04 | CSN6483 | SHE → SYX | May 4, 01:55 UTC | May 4, 10:30 UTC | 8h 35m |
| 2026-05-03 | CSN6483 | SHE → SYX | May 3, 10:30 UTC | May 4, 02:15 UTC | 15h 45m |
| 2026-05-03 | CSN6483 | SHE → SYX | May 3, 01:55 UTC | May 3, 10:35 UTC | 8h 39m |
| 2026-05-02 | CSN6483 | SHE → SYX | May 2, 11:20 UTC | May 3, 02:15 UTC | 14h 55m |
| 2026-05-02 | CSN6347 | SHE → CAN | May 2, 04:20 UTC | May 3, 02:15 UTC | 21h 55m |
| 2026-05-01 | CSN6347 | SHE → CAN | May 1, 10:15 UTC | May 2, 04:40 UTC | 18h 25m |
| 2026-04-30 | CSN6483 | SHE → SYX | Apr 30, 14:50 UTC | May 1, 10:15 UTC | 19h 25m |
| 2026-04-30 | CSN6465 | SHE → CKG | Apr 30, 08:50 UTC | May 1, 02:10 UTC | 17h 20m |
| 2026-04-30 | CSN6465 | SHE → CKG | Apr 30, 02:55 UTC | May 1, 02:10 UTC | 23h 15m |
| 2026-04-24 | CSN6466 | CKG → SHE | Apr 24, 15:40 UTC | Apr 25, 04:35 UTC | 12h 55m |
| 2026-04-24 | CSN6465 | SHE → CKG | Apr 24, 09:55 UTC | Apr 25, 04:35 UTC | 18h 40m |
| 2026-04-22 | CSN6310 | SZX → SHE | Apr 22, 13:15 UTC | Apr 23, 03:05 UTC | 13h 50m |
| 2026-04-22 | CSN6310 | SZX → SHE | Apr 22, 10:55 UTC | Apr 22, 11:05 UTC | 10m |
| 2026-04-22 | CSN6309 | SHE → SZX | Apr 22, 09:20 UTC | Apr 22, 09:30 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-8673 page for operator, model, and routing details .