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
- 82
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 2d 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 |
|---|---|---|---|
| CSN8315 | - | 7 | 2026-06-27 |
| CSN8313 | - | 7 | 2026-07-11 |
| CSN6063 | - | 7 | 2026-07-10 |
| CSN8316 | - | 5 | 2026-06-28 |
| CSN3081 | - | 5 | 2026-07-02 |
| CSN8024 | China Southern Airlines | 4 | 2026-06-14 |
| CSN8023 | - | 4 | 2026-06-14 |
| CSN323 | - | 4 | 2026-07-02 |
| CSN3082 | - | 4 | 2026-07-02 |
| CSN6499 | - | 3 | 2026-06-20 |
| CSN6064 | - | 3 | 2026-07-03 |
| CSN8314 | - | 2 | 2026-06-29 |
| CSN6498 | - | 2 | 2026-04-13 |
| CSN6307 | - | 2 | 2026-07-01 |
| CSN8819 | China Southern Airlines | 1 | 2026-04-14 |
| CSN8598 | - | 1 | 2026-04-13 |
| CSN8597 | - | 1 | 2026-04-13 |
| CSN8479 | China Southern Airlines | 1 | 2026-06-08 |
| CSN8177 | China Southern Airlines | 1 | 2026-05-26 |
| CSN6970 | China Southern Airlines | 1 | 2026-04-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-11 | CSN8313 | - | Jul 11, 01:40 UTC | Jul 11, 06:35 UTC | 4h 55m |
| 2026-07-10 | CSN6063 | - | Jul 10, 07:05 UTC | Jul 10, 11:00 UTC | 3h 55m |
| 2026-07-10 | CSN3870 | - | Jul 10, 03:40 UTC | Jul 10, 03:55 UTC | 15m |
| 2026-07-06 | CSN3068 | - | Jul 6, 18:05 UTC | Jul 6, 20:05 UTC | 2h 0m |
| 2026-07-06 | CSN3067 | - | Jul 6, 13:25 UTC | Jul 6, 16:50 UTC | 3h 25m |
| 2026-07-04 | CSN6332 | - | Jul 4, 05:35 UTC | Jul 4, 16:20 UTC | 10h 45m |
| 2026-07-03 | CSN6064 | - | Jul 3, 10:20 UTC | Jul 4, 05:40 UTC | 19h 20m |
| 2026-07-03 | CSN6064 | - | Jul 3, 07:50 UTC | Jul 4, 05:40 UTC | 21h 50m |
| 2026-07-03 | CSN6063 | - | Jul 3, 06:15 UTC | Jul 4, 05:40 UTC | 23h 25m |
| 2026-07-03 | CSN6063 | - | Jul 3, 05:35 UTC | Jul 3, 11:10 UTC | 5h 35m |
| 2026-07-02 | CSN323 | - | Jul 2, 14:25 UTC | Jul 3, 02:20 UTC | 11h 55m |
| 2026-07-02 | CSN323 | - | Jul 2, 14:10 UTC | Jul 2, 14:20 UTC | 10m |
| 2026-07-02 | CSN3082 | - | Jul 2, 09:20 UTC | Jul 2, 10:55 UTC | 1h 35m |
| 2026-07-02 | CSN3081 | - | Jul 2, 05:45 UTC | Jul 2, 07:20 UTC | 1h 35m |
| 2026-07-01 | CSN6307 | - | Jul 1, 03:45 UTC | Jul 1, 08:10 UTC | 4h 25m |
| 2026-06-29 | CSN8314 | - | Jun 29, 01:39 UTC | Jun 29, 06:24 UTC | 4h 45m |
| 2026-06-28 | CSN8316 | - | Jun 28, 10:55 UTC | Jun 28, 11:19 UTC | 25m |
| 2026-06-27 | CSN8315 | - | Jun 27, 14:14 UTC | Jun 28, 08:25 UTC | 18h 10m |
| 2026-06-26 | CSN8316 | HAN → CAN | Jun 26, 09:05 UTC | Jun 26, 09:24 UTC | 20m |
| 2026-06-26 | CSN8315 | - | Jun 26, 07:00 UTC | Jun 26, 07:35 UTC | 35m |
| 2026-06-24 | CSN8316 | HAN → CAN | Jun 24, 09:00 UTC | Jun 24, 09:24 UTC | 25m |
| 2026-06-24 | CSN8315 | - | Jun 24, 06:39 UTC | Jun 24, 07:24 UTC | 45m |
| 2026-06-21 | CSN3415 | - | Jun 21, 03:30 UTC | Jun 21, 04:24 UTC | 55m |
| 2026-06-20 | CSN6499 | - | Jun 20, 07:39 UTC | Jun 20, 08:05 UTC | 25m |
| 2026-06-19 | CSN3501 | - | Jun 19, 07:25 UTC | Jun 19, 07:39 UTC | 15m |
| 2026-06-18 | CSN8316 | HAN → CAN | Jun 18, 12:05 UTC | Jun 18, 12:30 UTC | 25m |
| 2026-06-18 | CSN8315 | - | Jun 18, 10:05 UTC | Jun 18, 10:40 UTC | 35m |
| 2026-06-17 | CSN8316 | HAN → CAN | Jun 17, 09:35 UTC | Jun 17, 09:55 UTC | 20m |
| 2026-06-17 | CSN8315 | - | Jun 17, 07:15 UTC | Jun 17, 08:00 UTC | 45m |
| 2026-06-16 | CSN8315 | - | Jun 16, 09:04 UTC | Jun 17, 07:45 UTC | 22h 41m |
| 2026-06-16 | CSN8315 | - | Jun 16, 07:05 UTC | Jun 16, 07:40 UTC | 35m |
| 2026-06-15 | CSN8314 | PNH → CAN | Jun 15, 06:00 UTC | Jun 15, 06:20 UTC | 20m |
| 2026-06-14 | CSN8024 | BKK → CAN | Jun 14, 11:20 UTC | Jun 14, 12:55 UTC | 1h 35m |
| 2026-06-14 | CSN8023 | - | Jun 14, 08:05 UTC | Jun 14, 09:40 UTC | 1h 35m |
| 2026-06-12 | CSN8024 | BKK → CAN | Jun 12, 11:05 UTC | Jun 12, 12:45 UTC | 1h 40m |
| 2026-06-12 | CSN8023 | CAN → BKK | Jun 12, 07:35 UTC | Jun 12, 09:45 UTC | 2h 10m |
| 2026-06-08 | CSN8479 | CAN → TNA | Jun 8, 07:00 UTC | Jun 8, 07:10 UTC | 10m |
| 2026-06-06 | CSN3240 | SZX → KWL | Jun 6, 04:25 UTC | Jun 6, 04:35 UTC | 10m |
| 2026-06-02 | CSN6063 | CAN → HKT | Jun 2, 05:15 UTC | Jun 2, 12:10 UTC | 6h 55m |
| 2026-06-02 | - | - | Jun 2, 01:05 UTC | Jun 2, 01:15 UTC | 10m |
| 2026-05-31 | CSN6064 | HKT → CAN | May 31, 11:00 UTC | May 31, 12:45 UTC | 1h 45m |
| 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 |
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 .