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
- 62
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 10h 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN6668 | China Southern Airlines | 6 | 2026-05-11 |
| CSN6792 | - | 4 | 2026-07-04 |
| CSN6754 | China Southern Airlines | 4 | 2026-05-07 |
| CSN6753 | China Southern Airlines | 4 | 2026-05-06 |
| CSN6766 | China Southern Airlines | 3 | 2026-05-03 |
| CSN5120 | - | 3 | 2026-07-05 |
| CSN5119 | - | 3 | 2026-07-05 |
| CSN3836 | China Southern Airlines | 3 | 2026-05-12 |
| CSN3516 | - | 3 | 2026-07-09 |
| CSN6790 | - | 2 | 2026-07-07 |
| CSN6784 | China Southern Airlines | 2 | 2026-07-17 |
| CSN6774 | - | 2 | 2026-07-07 |
| CSN6734 | China Southern Airlines | 2 | 2026-04-26 |
| CSN5519 | - | 2 | 2026-07-14 |
| CSN3515 | - | 2 | 2026-07-10 |
| CSN6794 | - | 1 | 2026-07-08 |
| CSN6793 | - | 1 | 2026-07-08 |
| CSN6786 | China Southern Airlines | 1 | 2026-05-25 |
| CSN677X | - | 1 | 2026-07-04 |
| CSN6778 | - | 1 | 2026-07-08 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CSN6784 | CAN → HAK | Jul 17, 13:45 UTC | Jul 17, 13:55 UTC | 10m |
| 2026-07-16 | CSN6716 | - | Jul 16, 11:54 UTC | Jul 16, 14:45 UTC | 2h 50m |
| 2026-07-15 | CSN6717 | - | Jul 15, 10:20 UTC | Jul 15, 10:50 UTC | 30m |
| 2026-07-14 | CSN5520 | - | Jul 14, 14:05 UTC | Jul 14, 14:20 UTC | 15m |
| 2026-07-14 | CSN5519 | - | Jul 14, 08:45 UTC | Jul 14, 12:05 UTC | 3h 20m |
| 2026-07-13 | CSN5519 | - | Jul 13, 14:25 UTC | Jul 14, 12:05 UTC | 21h 40m |
| 2026-07-13 | CSN6715 | - | Jul 13, 03:40 UTC | Jul 13, 14:25 UTC | 10h 45m |
| 2026-07-11 | CSN6712 | - | Jul 11, 08:20 UTC | Jul 11, 08:40 UTC | 20m |
| 2026-07-10 | CSN3515 | - | Jul 10, 01:45 UTC | Jul 10, 07:05 UTC | 5h 20m |
| 2026-07-09 | CSN3516 | - | Jul 9, 01:35 UTC | Jul 9, 17:00 UTC | 15h 25m |
| 2026-07-08 | CSN6794 | - | Jul 8, 16:05 UTC | Jul 8, 16:20 UTC | 15m |
| 2026-07-08 | CSN6793 | - | Jul 8, 14:45 UTC | Jul 8, 14:55 UTC | 10m |
| 2026-07-08 | CSN6778 | - | Jul 8, 12:05 UTC | Jul 8, 12:15 UTC | 10m |
| 2026-07-07 | CSN6790 | - | Jul 7, 08:25 UTC | Jul 7, 08:40 UTC | 15m |
| 2026-07-07 | CSN6774 | - | Jul 7, 02:00 UTC | Jul 7, 02:10 UTC | 10m |
| 2026-07-06 | CSN3119 | - | Jul 6, 01:05 UTC | Jul 6, 01:25 UTC | 20m |
| 2026-07-05 | CSN6720 | - | Jul 5, 16:45 UTC | Jul 5, 17:05 UTC | 20m |
| 2026-07-05 | CSN5120 | - | Jul 5, 10:55 UTC | Jul 5, 11:15 UTC | 20m |
| 2026-07-05 | CSN5119 | - | Jul 5, 09:25 UTC | Jul 5, 09:40 UTC | 15m |
| 2026-07-04 | CSN6792 | - | Jul 4, 15:50 UTC | Jul 4, 16:10 UTC | 20m |
| 2026-07-04 | CSN6790 | - | Jul 4, 10:55 UTC | Jul 4, 11:15 UTC | 20m |
| 2026-07-04 | CSN677X | - | Jul 4, 00:10 UTC | Jul 4, 00:25 UTC | 15m |
| 2026-06-22 | CSN5120 | - | Jun 22, 08:54 UTC | Jun 22, 09:14 UTC | 20m |
| 2026-06-22 | CSN5119 | - | Jun 22, 06:39 UTC | Jun 22, 06:54 UTC | 15m |
| 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 |
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 .