sensors Mode-S transponder
780508
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6397 · AIRBUS A-321
- Hex
- 780508
- Octal
- 36002410
- Decimal
- 7,865,608
- Country
- CN
- Tail
- B-6397
- Type
- A321
- Flights observed
- 38
- Distinct callsigns
- 19
- Country
- CN
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 780508 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 |
|---|---|---|---|
| CSN6668 | China Southern Airlines | 6 | 2026-05-11 |
| CSN6754 | China Southern Airlines | 4 | 2026-05-07 |
| CSN6753 | China Southern Airlines | 4 | 2026-05-06 |
| CSN6792 | China Southern Airlines | 3 | 2026-05-23 |
| CSN6766 | China Southern Airlines | 3 | 2026-05-03 |
| CSN3836 | China Southern Airlines | 3 | 2026-05-12 |
| CSN6734 | China Southern Airlines | 2 | 2026-04-26 |
| CSN3516 | China Southern Airlines | 2 | 2026-05-17 |
| CSN6786 | China Southern Airlines | 1 | 2026-05-25 |
| CSN6784 | China Southern Airlines | 1 | 2026-05-24 |
| CSN6774 | China Southern Airlines | 1 | 2026-04-18 |
| CSN6765 | China Southern Airlines | 1 | 2026-05-29 |
| CSN6736 | China Southern Airlines | 1 | 2026-04-14 |
| CSN6638 | China Southern Airlines | 1 | 2026-04-28 |
| CSN5120 | China Southern Airlines | 1 | 2026-05-30 |
| CSN5119 | China Southern Airlines | 1 | 2026-05-30 |
| CSN3879 | - | 1 | 2026-04-17 |
| CSN3518 | China Southern Airlines | 1 | 2026-05-10 |
| CSN3515 | China Southern Airlines | 1 | 2026-05-21 |
Recent flights last 38
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | CSN5120 | HAK → SZX | May 30, 08:40 UTC | May 30, 08:55 UTC | 15m |
| 2026-05-30 | CSN5119 | SZX → HAK | May 30, 06:35 UTC | May 30, 06:50 UTC | 15m |
| 2026-05-29 | CSN6765 | HAK → PVG | May 29, 10:10 UTC | May 29, 16:00 UTC | 5h 50m |
| 2026-05-25 | CSN6786 | CAN → HAK | May 25, 03:45 UTC | May 25, 04:00 UTC | 15m |
| 2026-05-24 | CSN6784 | CAN → HAK | May 24, 12:40 UTC | May 24, 13:00 UTC | 20m |
| 2026-05-23 | CSN6792 | CAN → HAK | May 23, 10:55 UTC | May 23, 11:15 UTC | 20m |
| 2026-05-21 | CSN3515 | HAK → PVG | May 21, 01:25 UTC | May 21, 06:55 UTC | 5h 30m |
| 2026-05-17 | CSN3516 | PVG → HAK | May 17, 01:20 UTC | May 17, 14:50 UTC | 13h 30m |
| 2026-05-12 | CSN3836 | PVG → SYX | May 12, 05:05 UTC | May 12, 10:40 UTC | 5h 35m |
| 2026-05-11 | CSN3836 | PVG → SYX | May 11, 12:25 UTC | May 12, 10:40 UTC | 22h 16m |
| 2026-05-11 | CSN6668 | NKG → SYX | May 11, 07:10 UTC | May 12, 05:40 UTC | 22h 31m |
| 2026-05-10 | CSN6792 | CAN → HAK | May 10, 10:49 UTC | May 10, 11:00 UTC | 10m |
| 2026-05-10 | CSN3518 | NGB → CAN | May 10, 08:00 UTC | May 10, 09:10 UTC | 1h 10m |
| 2026-05-08 | CSN3516 | PVG → HAK | May 8, 01:04 UTC | May 8, 07:14 UTC | 6h 10m |
| 2026-05-07 | CSN6754 | PVG → SYX | May 7, 06:35 UTC | May 8, 02:04 UTC | 19h 30m |
| 2026-05-06 | CSN6754 | PVG → SYX | May 6, 09:35 UTC | May 7, 06:55 UTC | 21h 19m |
| 2026-05-06 | CSN6753 | SYX → PVG | May 6, 01:01 UTC | May 6, 06:50 UTC | 5h 50m |
| 2026-05-04 | CSN6668 | NKG → SYX | May 4, 07:10 UTC | May 4, 12:35 UTC | 5h 25m |
| 2026-05-03 | CSN6766 | PVG → HAK | May 3, 09:55 UTC | May 3, 15:35 UTC | 5h 40m |
| 2026-04-28 | CSN6638 | HAK → PKX | Apr 28, 10:40 UTC | Apr 28, 10:55 UTC | 15m |
| 2026-04-26 | CSN6734 | CAN → SYX | Apr 26, 06:15 UTC | Apr 26, 06:30 UTC | 15m |
| 2026-04-24 | CSN6766 | PVG → HAK | Apr 24, 16:15 UTC | Apr 25, 07:05 UTC | 14h 50m |
| 2026-04-24 | CSN6766 | PVG → HAK | Apr 24, 10:40 UTC | Apr 25, 07:05 UTC | 20h 25m |
| 2026-04-24 | CSN6734 | CAN → SYX | Apr 24, 07:00 UTC | Apr 25, 01:30 UTC | 18h 30m |
| 2026-04-23 | CSN3836 | PVG → SYX | Apr 23, 07:20 UTC | Apr 23, 12:15 UTC | 4h 55m |
| 2026-04-22 | CSN6668 | NKG → SYX | Apr 22, 12:35 UTC | Apr 23, 12:01 UTC | 23h 25m |
| 2026-04-22 | CSN6668 | NKG → SYX | Apr 22, 07:35 UTC | Apr 22, 12:55 UTC | 5h 20m |
| 2026-04-21 | CSN6668 | NKG → SYX | Apr 21, 12:40 UTC | Apr 22, 07:40 UTC | 19h 0m |
| 2026-04-21 | CSN6668 | NKG → SYX | Apr 21, 07:15 UTC | Apr 21, 13:05 UTC | 5h 50m |
| 2026-04-19 | CSN6753 | SYX → PVG | Apr 19, 12:15 UTC | Apr 20, 07:25 UTC | 19h 10m |
| 2026-04-19 | CSN6753 | SYX → PVG | Apr 19, 07:20 UTC | Apr 20, 02:05 UTC | 18h 45m |
| 2026-04-18 | CSN6774 | CAN → HAK | Apr 18, 02:05 UTC | Apr 18, 02:15 UTC | 10m |
| 2026-04-17 | CSN3879 | - | Apr 17, 06:30 UTC | Apr 17, 06:40 UTC | 10m |
| 2026-04-15 | CSN6792 | CAN → HAK | Apr 15, 10:45 UTC | Apr 15, 10:55 UTC | 10m |
| 2026-04-14 | CSN6736 | CAN → SYX | Apr 14, 15:30 UTC | Apr 14, 15:50 UTC | 20m |
| 2026-04-14 | CSN6754 | - | Apr 14, 06:50 UTC | Apr 14, 07:10 UTC | 20m |
| 2026-04-13 | CSN6754 | - | Apr 13, 06:45 UTC | Apr 13, 07:00 UTC | 15m |
| 2026-04-13 | CSN6753 | - | Apr 13, 01:00 UTC | Apr 13, 01:15 UTC | 15m |
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-6397 page for operator, model, and routing details .