sensors Mode-S transponder
78102F
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8638 · AIRBUS A-321
- Hex
- 78102F
- Octal
- 36010057
- Decimal
- 7,868,463
- Country
- CN
- Tail
- B-8638
- Type
- A321
- Flights observed
- 42
- Distinct callsigns
- 13
- Country
- CN
- Last broadcast
- 12h ago
Last known position
Country allocation
The ICAO 24-bit address 78102F 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 13 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN6630 | China Southern Airlines | 8 | 2026-05-28 |
| CSN3836 | China Southern Airlines | 7 | 2026-05-09 |
| CSN6629 | China Southern Airlines | 6 | 2026-05-29 |
| CSN6624 | China Southern Airlines | 6 | 2026-05-10 |
| CSN3835 | China Southern Airlines | 4 | 2026-05-09 |
| CSN6732 | China Southern Airlines | 3 | 2026-04-24 |
| CSN6736 | China Southern Airlines | 2 | 2026-05-02 |
| CSN6758 | China Southern Airlines | 1 | 2026-05-04 |
| CSN6744 | China Southern Airlines | 1 | 2026-05-25 |
| CSN6733 | China Southern Airlines | 1 | 2026-05-23 |
| CSN6711 | China Southern Airlines | 1 | 2026-05-30 |
| CSN3978 | China Southern Airlines | 1 | 2026-05-05 |
| CSN3977 | China Southern Airlines | 1 | 2026-05-04 |
Recent flights last 42
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | CSN6711 | SYX → PKX | May 30, 00:25 UTC | May 30, 08:20 UTC | 7h 55m |
| 2026-05-29 | CSN6629 | SYX → HGH | May 29, 07:05 UTC | May 30, 00:40 UTC | 17h 35m |
| 2026-05-28 | CSN6630 | CGQ → HGH | May 28, 11:55 UTC | May 29, 07:15 UTC | 19h 20m |
| 2026-05-28 | CSN6630 | CGQ → HGH | May 28, 06:55 UTC | May 29, 00:45 UTC | 17h 50m |
| 2026-05-27 | CSN6629 | SYX → HGH | May 27, 11:55 UTC | May 28, 07:10 UTC | 19h 15m |
| 2026-05-27 | CSN6629 | SYX → HGH | May 27, 02:14 UTC | May 27, 12:35 UTC | 10h 20m |
| 2026-05-25 | CSN6744 | CAN → SYX | May 25, 10:50 UTC | May 26, 06:20 UTC | 19h 30m |
| 2026-05-23 | CSN6733 | SYX → CAN | May 23, 04:00 UTC | May 23, 04:10 UTC | 10m |
| 2026-05-22 | CSN6629 | SYX → HGH | May 22, 07:05 UTC | May 22, 12:55 UTC | 5h 50m |
| 2026-05-10 | CSN6624 | NKG → SYX | May 10, 13:44 UTC | May 11, 05:50 UTC | 16h 5m |
| 2026-05-10 | CSN6624 | NKG → SYX | May 10, 09:05 UTC | May 11, 05:50 UTC | 20h 45m |
| 2026-05-09 | CSN3836 | PVG → SYX | May 9, 10:20 UTC | May 10, 09:20 UTC | 23h 0m |
| 2026-05-09 | CSN3835 | SYX → PVG | May 9, 05:00 UTC | May 9, 10:35 UTC | 5h 35m |
| 2026-05-08 | CSN3836 | PVG → SYX | May 8, 11:49 UTC | May 9, 10:35 UTC | 22h 45m |
| 2026-05-08 | CSN3836 | PVG → SYX | May 8, 11:25 UTC | May 9, 06:00 UTC | 18h 35m |
| 2026-05-08 | CSN3835 | SYX → PVG | May 8, 05:49 UTC | May 9, 05:10 UTC | 23h 20m |
| 2026-05-05 | CSN3978 | SZX → SYX | May 5, 01:50 UTC | May 5, 10:35 UTC | 8h 45m |
| 2026-05-04 | CSN3977 | SYX → SZX | May 4, 23:50 UTC | May 5, 00:05 UTC | 15m |
| 2026-05-04 | CSN6758 | SZX → SYX | May 4, 15:40 UTC | May 4, 16:00 UTC | 20m |
| 2026-05-02 | CSN6736 | CAN → SYX | May 2, 15:50 UTC | May 3, 01:15 UTC | 9h 25m |
| 2026-05-02 | CSN6624 | NKG → SYX | May 2, 05:55 UTC | May 2, 06:15 UTC | 20m |
| 2026-05-01 | CSN6624 | NKG → SYX | May 1, 09:15 UTC | May 2, 06:15 UTC | 21h 0m |
| 2026-05-01 | CSN6624 | NKG → SYX | May 1, 05:35 UTC | May 1, 09:25 UTC | 3h 50m |
| 2026-04-30 | CSN6624 | NKG → SYX | Apr 30, 09:25 UTC | May 1, 05:50 UTC | 20h 25m |
| 2026-04-29 | CSN6630 | CGQ → HGH | Apr 29, 12:10 UTC | Apr 30, 09:25 UTC | 21h 14m |
| 2026-04-29 | CSN6630 | CGQ → HGH | Apr 29, 07:20 UTC | Apr 29, 12:30 UTC | 5h 11m |
| 2026-04-27 | CSN6736 | CAN → SYX | Apr 27, 15:40 UTC | Apr 27, 15:50 UTC | 10m |
| 2026-04-24 | CSN6732 | CAN → SYX | Apr 24, 02:25 UTC | Apr 24, 02:35 UTC | 10m |
| 2026-04-21 | CSN6630 | CGQ → HGH | Apr 21, 12:10 UTC | Apr 21, 12:25 UTC | 15m |
| 2026-04-20 | CSN6630 | CGQ → HGH | Apr 20, 07:00 UTC | Apr 20, 12:15 UTC | 5h 15m |
| 2026-04-19 | CSN6630 | CGQ → HGH | Apr 19, 11:55 UTC | Apr 20, 07:10 UTC | 19h 15m |
| 2026-04-19 | CSN6630 | CGQ → HGH | Apr 19, 07:00 UTC | Apr 19, 12:15 UTC | 5h 15m |
| 2026-04-18 | CSN6629 | SYX → HGH | Apr 18, 11:50 UTC | Apr 19, 07:10 UTC | 19h 20m |
| 2026-04-18 | CSN3836 | PVG → SYX | Apr 18, 11:30 UTC | Apr 19, 07:10 UTC | 19h 40m |
| 2026-04-18 | CSN3836 | PVG → SYX | Apr 18, 05:15 UTC | Apr 18, 11:50 UTC | 6h 35m |
| 2026-04-17 | CSN3836 | PVG → SYX | Apr 17, 10:45 UTC | Apr 17, 11:05 UTC | 20m |
| 2026-04-17 | CSN3835 | SYX → PVG | Apr 17, 05:55 UTC | Apr 17, 06:10 UTC | 15m |
| 2026-04-16 | CSN6732 | CAN → SYX | Apr 16, 02:19 UTC | Apr 16, 02:34 UTC | 15m |
| 2026-04-15 | CSN6629 | SYX → HGH | Apr 15, 08:20 UTC | Apr 15, 08:35 UTC | 15m |
| 2026-04-13 | CSN3836 | - | Apr 13, 11:35 UTC | Apr 13, 11:50 UTC | 15m |
| 2026-04-13 | CSN3835 | - | Apr 13, 06:20 UTC | Apr 13, 06:30 UTC | 10m |
| 2026-04-13 | CSN6732 | CAN → SYX | Apr 13, 03:05 UTC | Apr 13, 03:20 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-8638 page for operator, model, and routing details .