sensors Mode-S transponder
78161F
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-306H · AIRBUS A-321neo
- Hex
- 78161F
- Octal
- 36013037
- Decimal
- 7,869,983
- Country
- CN
- Tail
- B-306H
- Type
- A21N
- Flights observed
- 44
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 7h ago
Last known position
Country allocation
The ICAO 24-bit address 78161F 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 | 4 | 2026-05-27 |
| CSN3743 | China Southern Airlines | 4 | 2026-05-27 |
| CSN5300 | China Southern Airlines | 3 | 2026-04-26 |
| CSN8819 | China Southern Airlines | 2 | 2026-06-03 |
| CSN6148 | China Southern Airlines | 2 | 2026-05-08 |
| CSN6085 | China Southern Airlines | 2 | 2026-05-10 |
| CSN3623 | China Southern Airlines | 2 | 2026-04-23 |
| CSN3616 | China Southern Airlines | 2 | 2026-04-24 |
| CSN3615 | China Southern Airlines | 2 | 2026-04-28 |
| CSN8636 | China Southern Airlines | 1 | 2026-05-04 |
| CSN8325 | China Southern Airlines | 1 | 2026-04-22 |
| CSN6851 | China Southern Airlines | 1 | 2026-04-27 |
| CSN6667 | China Southern Airlines | 1 | 2026-04-29 |
| CSN6549 | China Southern Airlines | 1 | 2026-06-03 |
| CSN6378 | China Southern Airlines | 1 | 2026-04-27 |
| CSN6257 | China Southern Airlines | 1 | 2026-05-28 |
| CSN6251 | China Southern Airlines | 1 | 2026-05-13 |
| CSN6086 | China Southern Airlines | 1 | 2026-05-10 |
| CSN5974 | China Southern Airlines | 1 | 2026-05-07 |
| CSN5919 | China Southern Airlines | 1 | 2026-05-31 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-04 | CSN3167 | SZX → PKX | Jun 4, 05:45 UTC | Jun 4, 05:55 UTC | 10m |
| 2026-06-03 | CSN6549 | SZX → NAO | Jun 3, 14:20 UTC | Jun 3, 14:30 UTC | 10m |
| 2026-06-03 | CSN8819 | SZX → KMG | Jun 3, 08:30 UTC | Jun 3, 08:40 UTC | 10m |
| 2026-06-03 | CSN8819 | SZX → KMG | Jun 3, 07:45 UTC | Jun 3, 08:00 UTC | 15m |
| 2026-06-03 | CSN3465 | SZX → CKG | Jun 3, 00:30 UTC | Jun 3, 00:40 UTC | 10m |
| 2026-06-02 | CSN3564 | HGH → SZX | Jun 2, 13:20 UTC | Jun 2, 14:10 UTC | 50m |
| 2026-06-02 | CSN3563 | SZX → HGH | Jun 2, 08:10 UTC | Jun 2, 08:25 UTC | 15m |
| 2026-06-02 | CSN5102 | YIW → SZX | Jun 2, 06:20 UTC | Jun 2, 06:35 UTC | 15m |
| 2026-06-02 | CSN5101 | SZX → YIW | Jun 2, 02:25 UTC | Jun 2, 02:40 UTC | 15m |
| 2026-06-01 | CSN3151 | SZX → PEK | Jun 1, 00:40 UTC | Jun 1, 00:55 UTC | 15m |
| 2026-05-31 | CSN5919 | SZX → CKG | May 31, 09:10 UTC | May 31, 09:25 UTC | 15m |
| 2026-05-28 | CSN6257 | HRB → PVG | May 28, 00:20 UTC | May 28, 09:25 UTC | 9h 5m |
| 2026-05-27 | CSN3744 | SZX → HRB | May 27, 12:00 UTC | May 28, 09:25 UTC | 21h 25m |
| 2026-05-27 | CSN3744 | SZX → HRB | May 27, 09:40 UTC | May 27, 09:55 UTC | 15m |
| 2026-05-27 | CSN3743 | HRB → SZX | May 27, 07:20 UTC | May 27, 07:35 UTC | 15m |
| 2026-05-27 | CSN3743 | HRB → SZX | May 27, 04:45 UTC | May 27, 04:59 UTC | 15m |
| 2026-05-13 | CSN6251 | HRB → PVG | May 13, 08:40 UTC | May 13, 09:10 UTC | 30m |
| 2026-05-10 | CSN6086 | NRT → HRB | May 10, 04:04 UTC | May 10, 15:15 UTC | 11h 10m |
| 2026-05-10 | CSN6085 | HRB → NRT | May 10, 01:45 UTC | May 10, 02:34 UTC | 50m |
| 2026-05-09 | CSN6085 | HRB → NRT | May 9, 06:10 UTC | May 10, 02:34 UTC | 20h 25m |
| 2026-05-08 | CSN6148 | HRB → SYX | May 8, 09:19 UTC | May 9, 06:25 UTC | 21h 5m |
| 2026-05-07 | CSN6148 | HRB → SYX | May 7, 13:00 UTC | May 8, 09:44 UTC | 20h 45m |
| 2026-05-07 | CSN5974 | CSX → HRB | May 7, 01:15 UTC | May 7, 13:15 UTC | 12h 0m |
| 2026-05-05 | CSN3744 | SZX → HRB | May 5, 12:05 UTC | May 5, 12:20 UTC | 15m |
| 2026-05-05 | CSN3744 | SZX → HRB | May 5, 09:30 UTC | May 5, 09:40 UTC | 10m |
| 2026-05-05 | CSN3743 | HRB → SZX | May 5, 07:00 UTC | May 5, 07:10 UTC | 10m |
| 2026-05-04 | CSN3743 | HRB → SZX | May 4, 10:25 UTC | May 5, 04:35 UTC | 18h 11m |
| 2026-05-04 | CSN8636 | HGH → HRB | May 4, 01:35 UTC | May 4, 15:40 UTC | 14h 5m |
| 2026-05-03 | CSN5299 | PKX → JHG | May 3, 13:10 UTC | May 4, 10:25 UTC | 21h 15m |
| 2026-04-29 | CSN6667 | SYX → NKG | Apr 29, 08:10 UTC | Apr 29, 12:50 UTC | 4h 41m |
| 2026-04-28 | CSN3615 | CAN → HRB | Apr 28, 02:55 UTC | Apr 28, 07:10 UTC | 4h 15m |
| 2026-04-27 | CSN6851 | CGQ → CAN | Apr 27, 07:30 UTC | Apr 28, 03:05 UTC | 19h 35m |
| 2026-04-27 | CSN6378 | CAN → CGQ | Apr 27, 03:15 UTC | Apr 27, 07:45 UTC | 4h 30m |
| 2026-04-26 | CSN5300 | JHG → PKX | Apr 26, 05:55 UTC | Apr 27, 03:30 UTC | 21h 35m |
| 2026-04-25 | CSN3615 | CAN → HRB | Apr 25, 03:10 UTC | Apr 25, 03:20 UTC | 10m |
| 2026-04-24 | CSN3616 | HRB → CAN | Apr 24, 07:15 UTC | Apr 25, 03:20 UTC | 20h 5m |
| 2026-04-23 | CSN3616 | HRB → CAN | Apr 23, 09:50 UTC | Apr 24, 07:35 UTC | 21h 45m |
| 2026-04-23 | CSN3623 | CAN → HRB | Apr 23, 02:25 UTC | Apr 23, 09:55 UTC | 7h 31m |
| 2026-04-22 | CSN8325 | CAN → HRB | Apr 22, 13:05 UTC | Apr 23, 09:55 UTC | 20h 50m |
| 2026-04-22 | CSN5300 | JHG → PKX | Apr 22, 06:01 UTC | Apr 23, 02:35 UTC | 20h 35m |
| 2026-04-21 | CSN5300 | JHG → PKX | Apr 21, 09:30 UTC | Apr 22, 06:20 UTC | 20h 50m |
| 2026-04-20 | CSN3623 | CAN → HRB | Apr 20, 08:45 UTC | Apr 20, 09:00 UTC | 15m |
| 2026-04-19 | CSN3497 | CAN → KMG | Apr 19, 23:25 UTC | Apr 19, 23:35 UTC | 10m |
| 2026-04-18 | CSN3676 | - | Apr 18, 18:00 UTC | Apr 18, 18:10 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-306H page for operator, model, and routing details .