sensors Mode-S transponder
781FA7
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32EU · AIRBUS A-320neo
- Hex
- 781FA7
- Octal
- 36017647
- Decimal
- 7,872,423
- Country
- CN
- Tail
- B-32EU
- Type
- A20N
- Flights observed
- 41
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 12h ago
Last known position
Country allocation
The ICAO 24-bit address 781FA7 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 |
|---|---|---|---|
| CSN8313 | China Southern Airlines | 6 | 2026-05-27 |
| CSN3081 | China Southern Airlines | 4 | 2026-05-21 |
| CSN6063 | China Southern Airlines | 3 | 2026-05-25 |
| CSN3082 | China Southern Airlines | 3 | 2026-05-21 |
| CSN8024 | China Southern Airlines | 2 | 2026-05-29 |
| CSN8023 | China Southern Airlines | 2 | 2026-05-29 |
| CSN6499 | China Southern Airlines | 2 | 2026-05-11 |
| CSN6498 | - | 2 | 2026-04-13 |
| CSN323 | China Southern Airlines | 2 | 2026-05-24 |
| CSN8819 | China Southern Airlines | 1 | 2026-04-14 |
| CSN8598 | - | 1 | 2026-04-13 |
| CSN8597 | - | 1 | 2026-04-13 |
| CSN8177 | China Southern Airlines | 1 | 2026-05-26 |
| CSN6970 | China Southern Airlines | 1 | 2026-04-14 |
| CSN6497 | - | 1 | 2026-04-13 |
| CSN6307 | China Southern Airlines | 1 | 2026-05-01 |
| CSN6254 | - | 1 | 2026-04-13 |
| CSN6253 | China Southern Airlines | 1 | 2026-04-13 |
| CSN5840 | China Southern Airlines | 1 | 2026-04-25 |
| CSN3923 | China Southern Airlines | 1 | 2026-05-29 |
Recent flights last 41
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CSN8024 | BKK → CAN | May 29, 11:05 UTC | May 29, 12:40 UTC | 1h 35m |
| 2026-05-29 | CSN8023 | CAN → BKK | May 29, 07:30 UTC | May 29, 09:35 UTC | 2h 5m |
| 2026-05-29 | CSN3923 | CAN → ACX | May 29, 01:35 UTC | May 29, 01:45 UTC | 10m |
| 2026-05-27 | CSN8313 | CAN → PNH | May 27, 01:09 UTC | May 27, 01:24 UTC | 15m |
| 2026-05-26 | CSN8177 | CAN → HAN | May 26, 10:05 UTC | May 26, 10:14 UTC | 10m |
| 2026-05-25 | CSN6063 | CAN → HKT | May 25, 06:45 UTC | May 25, 11:25 UTC | 4h 40m |
| 2026-05-24 | CSN323 | CAN → PNH | May 24, 14:30 UTC | May 24, 14:40 UTC | 10m |
| 2026-05-24 | - | - | May 24, 07:35 UTC | May 24, 07:45 UTC | 10m |
| 2026-05-21 | CSN3082 | BKK → CAN | May 21, 11:35 UTC | May 21, 11:45 UTC | 10m |
| 2026-05-21 | CSN3082 | BKK → CAN | May 21, 09:10 UTC | May 21, 09:40 UTC | 30m |
| 2026-05-21 | CSN3081 | CAN → BKK | May 21, 05:00 UTC | May 21, 07:20 UTC | 2h 20m |
| 2026-05-20 | CSN3081 | CAN → BKK | May 20, 09:10 UTC | May 21, 07:20 UTC | 22h 10m |
| 2026-05-20 | CSN3081 | CAN → BKK | May 20, 04:50 UTC | May 20, 07:00 UTC | 2h 10m |
| 2026-05-14 | CSN8313 | CAN → PNH | May 14, 01:20 UTC | May 14, 01:30 UTC | 10m |
| 2026-05-13 | CSN3049 | CAN → HAN | May 13, 01:35 UTC | May 13, 10:00 UTC | 8h 25m |
| 2026-05-11 | CSN6499 | CAN → LUM | May 11, 07:05 UTC | May 11, 07:20 UTC | 15m |
| 2026-05-10 | CSN8313 | CAN → PNH | May 10, 01:14 UTC | May 10, 01:24 UTC | 10m |
| 2026-05-09 | CSN3082 | BKK → CAN | May 9, 09:10 UTC | May 9, 09:50 UTC | 40m |
| 2026-05-09 | CSN3081 | CAN → BKK | May 9, 05:00 UTC | May 9, 07:20 UTC | 2h 20m |
| 2026-05-07 | CSN8024 | BKK → CAN | May 7, 11:25 UTC | May 7, 12:05 UTC | 40m |
| 2026-05-07 | CSN8023 | CAN → BKK | May 7, 07:25 UTC | May 7, 09:50 UTC | 2h 25m |
| 2026-05-05 | CSN8313 | CAN → PNH | May 5, 01:20 UTC | May 5, 11:55 UTC | 10h 35m |
| 2026-05-04 | CSN3708 | TNA → CAN | May 4, 15:35 UTC | May 4, 15:50 UTC | 15m |
| 2026-05-02 | CSN323 | CAN → PNH | May 2, 14:10 UTC | May 2, 14:20 UTC | 10m |
| 2026-05-01 | CSN6307 | SHE → CAN | May 1, 03:50 UTC | May 1, 07:55 UTC | 4h 5m |
| 2026-04-29 | CSN8313 | CAN → PNH | Apr 29, 01:25 UTC | Apr 29, 01:35 UTC | 10m |
| 2026-04-28 | CSN8313 | CAN → PNH | Apr 28, 01:45 UTC | Apr 28, 02:00 UTC | 15m |
| 2026-04-27 | CSN6499 | CAN → LUM | Apr 27, 07:10 UTC | Apr 27, 07:25 UTC | 15m |
| 2026-04-25 | CSN3800 | TAO → CAN | Apr 25, 11:50 UTC | Apr 25, 12:00 UTC | 10m |
| 2026-04-25 | CSN5840 | WHA → CAN | Apr 25, 03:30 UTC | Apr 25, 03:45 UTC | 15m |
| 2026-04-23 | CSN6063 | CAN → HKT | Apr 23, 10:50 UTC | Apr 23, 15:10 UTC | 4h 20m |
| 2026-04-22 | CSN6063 | CAN → HKT | Apr 22, 14:15 UTC | Apr 23, 11:50 UTC | 21h 35m |
| 2026-04-14 | CSN8819 | SZX → KMG | Apr 14, 07:30 UTC | Apr 14, 07:45 UTC | 15m |
| 2026-04-14 | CSN6970 | NAO → SZX | Apr 14, 05:55 UTC | Apr 14, 06:05 UTC | 10m |
| 2026-04-13 | CSN6498 | - | Apr 13, 16:15 UTC | Apr 13, 16:30 UTC | 15m |
| 2026-04-13 | CSN6498 | - | Apr 13, 16:10 UTC | Apr 13, 16:30 UTC | 20m |
| 2026-04-13 | CSN6497 | - | Apr 13, 12:30 UTC | Apr 13, 12:50 UTC | 20m |
| 2026-04-13 | CSN8598 | - | Apr 13, 10:10 UTC | Apr 13, 10:35 UTC | 25m |
| 2026-04-13 | CSN8597 | - | Apr 13, 05:00 UTC | Apr 13, 05:15 UTC | 15m |
| 2026-04-13 | CSN6254 | - | Apr 13, 03:00 UTC | Apr 13, 03:20 UTC | 20m |
| 2026-04-13 | CSN6253 | SZX → HAK | Apr 13, 00:10 UTC | Apr 13, 00:25 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-32EU page for operator, model, and routing details .