sensors Mode-S transponder
781157
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8996 · AIRBUS A-321
- Hex
- 781157
- Octal
- 36010527
- Decimal
- 7,868,759
- Country
- CN
- Tail
- B-8996
- Type
- A321
- Flights observed
- 37
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 781157 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 |
|---|---|---|---|
| CSN3744 | China Southern Airlines | 5 | 2026-05-21 |
| CSN5824 | China Southern Airlines | 4 | 2026-05-05 |
| CSN5970 | China Southern Airlines | 3 | 2026-05-03 |
| CSN5823 | China Southern Airlines | 3 | 2026-05-07 |
| CSN6307 | China Southern Airlines | 2 | 2026-04-26 |
| CSN6220 | China Southern Airlines | 2 | 2026-06-07 |
| CSN5919 | China Southern Airlines | 2 | 2026-05-20 |
| CSN3743 | China Southern Airlines | 2 | 2026-05-20 |
| CSN8711 | China Southern Airlines | 1 | 2026-05-17 |
| CSN8636 | China Southern Airlines | 1 | 2026-06-05 |
| CSN8635 | China Southern Airlines | 1 | 2026-06-05 |
| CSN8315 | China Southern Airlines | 1 | 2026-04-29 |
| CSN6499 | China Southern Airlines | 1 | 2026-04-25 |
| CSN6259 | China Southern Airlines | 1 | 2026-06-05 |
| CSN6202 | China Southern Airlines | 1 | 2026-06-04 |
| CSN5920 | China Southern Airlines | 1 | 2026-05-15 |
| CSN5819 | China Southern Airlines | 1 | 2026-05-16 |
| CSN3905 | China Southern Airlines | 1 | 2026-04-29 |
| CSN3634 | China Southern Airlines | 1 | 2026-05-03 |
| CSN3616 | China Southern Airlines | 1 | 2026-04-20 |
Recent flights last 37
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-07 | CSN6220 | PKX → HRB | Jun 7, 04:20 UTC | Jun 7, 10:55 UTC | 6h 35m |
| 2026-06-05 | CSN8636 | HGH → HRB | Jun 5, 15:40 UTC | Jun 6, 09:30 UTC | 17h 50m |
| 2026-06-05 | CSN8635 | HRB → HGH | Jun 5, 10:00 UTC | Jun 6, 09:30 UTC | 23h 30m |
| 2026-06-05 | CSN6259 | HRB → HGH | Jun 5, 01:10 UTC | Jun 5, 15:45 UTC | 14h 35m |
| 2026-06-04 | CSN6202 | PKX → HRB | Jun 4, 14:45 UTC | Jun 5, 10:45 UTC | 20h 0m |
| 2026-05-21 | CSN3744 | SZX → HRB | May 21, 18:35 UTC | May 21, 18:50 UTC | 15m |
| 2026-05-21 | CSN3744 | SZX → HRB | May 21, 16:20 UTC | May 21, 16:35 UTC | 15m |
| 2026-05-21 | CSN3566 | HFE → SZX | May 21, 13:30 UTC | May 21, 13:40 UTC | 10m |
| 2026-05-21 | CSN3565 | SZX → HFE | May 21, 01:20 UTC | May 21, 01:35 UTC | 15m |
| 2026-05-20 | CSN5919 | SZX → CKG | May 20, 09:30 UTC | May 20, 09:40 UTC | 10m |
| 2026-05-20 | CSN3743 | HRB → SZX | May 20, 04:30 UTC | May 20, 04:40 UTC | 11m |
| 2026-05-17 | CSN3744 | SZX → HRB | May 17, 11:55 UTC | May 17, 12:05 UTC | 10m |
| 2026-05-17 | CSN8711 | SZX → HGH | May 17, 02:45 UTC | May 17, 03:00 UTC | 15m |
| 2026-05-16 | CSN5819 | SZX → TSN | May 16, 01:55 UTC | May 16, 02:05 UTC | 10m |
| 2026-05-15 | CSN5920 | CKG → SZX | May 15, 17:00 UTC | May 15, 17:10 UTC | 10m |
| 2026-05-15 | CSN5919 | SZX → CKG | May 15, 09:25 UTC | May 15, 09:35 UTC | 10m |
| 2026-05-09 | CSN3744 | SZX → HRB | May 9, 12:00 UTC | May 9, 12:20 UTC | 20m |
| 2026-05-09 | CSN3744 | SZX → HRB | May 9, 09:35 UTC | May 9, 09:50 UTC | 15m |
| 2026-05-09 | CSN3743 | HRB → SZX | May 9, 04:35 UTC | May 9, 04:45 UTC | 10m |
| 2026-05-07 | CSN5823 | HRB → WUH | May 7, 02:00 UTC | May 7, 06:45 UTC | 4h 45m |
| 2026-05-06 | CSN5823 | HRB → WUH | May 6, 10:05 UTC | May 7, 06:45 UTC | 20h 39m |
| 2026-05-06 | CSN5823 | HRB → WUH | May 6, 04:50 UTC | May 7, 02:15 UTC | 21h 24m |
| 2026-05-05 | CSN5824 | WUH → HRB | May 5, 01:45 UTC | May 5, 10:50 UTC | 9h 5m |
| 2026-05-04 | CSN5824 | WUH → HRB | May 4, 13:40 UTC | May 5, 10:50 UTC | 21h 11m |
| 2026-05-04 | CSN6220 | PKX → HRB | May 4, 04:29 UTC | May 5, 02:01 UTC | 21h 31m |
| 2026-05-03 | CSN3634 | HRB → SZX | May 3, 14:15 UTC | May 3, 14:25 UTC | 10m |
| 2026-05-03 | CSN5970 | XIY → HRB | May 3, 07:10 UTC | May 3, 11:45 UTC | 4h 35m |
| 2026-05-02 | CSN5970 | XIY → HRB | May 2, 07:05 UTC | May 2, 07:25 UTC | 20m |
| 2026-05-01 | CSN5970 | XIY → HRB | May 1, 10:50 UTC | May 2, 07:25 UTC | 20h 35m |
| 2026-05-01 | CSN5824 | WUH → HRB | May 1, 02:10 UTC | May 1, 11:00 UTC | 8h 50m |
| 2026-04-30 | CSN5824 | WUH → HRB | Apr 30, 10:30 UTC | May 1, 07:05 UTC | 20h 35m |
| 2026-04-29 | CSN3905 | CAN → HRB | Apr 29, 15:50 UTC | Apr 30, 10:30 UTC | 18h 39m |
| 2026-04-29 | CSN8315 | CAN → HAN | Apr 29, 07:55 UTC | Apr 30, 02:05 UTC | 18h 10m |
| 2026-04-26 | CSN6307 | SHE → CAN | Apr 26, 03:55 UTC | Apr 26, 07:50 UTC | 3h 55m |
| 2026-04-25 | CSN6499 | CAN → LUM | Apr 25, 07:10 UTC | Apr 26, 04:05 UTC | 20h 55m |
| 2026-04-22 | CSN6307 | SHE → CAN | Apr 22, 08:10 UTC | Apr 22, 08:35 UTC | 25m |
| 2026-04-20 | CSN3616 | HRB → CAN | Apr 20, 03:00 UTC | Apr 20, 07:50 UTC | 4h 50m |
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-8996 page for operator, model, and routing details .