sensors Mode-S transponder
7800F7
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5676 · BOEING 737-800
- Hex
- 7800F7
- Octal
- 36000367
- Decimal
- 7,864,567
- Country
- CN
- Tail
- B-5676
- Type
- B738
- Flights observed
- 39
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 19h ago
Last known position
Country allocation
The ICAO 24-bit address 7800F7 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN3280 | - | 12 | 2026-07-17 |
| CSN3279 | - | 12 | 2026-07-18 |
| CSN3793 | China Southern Airlines | 5 | 2026-06-06 |
| CSN3794 | China Southern Airlines | 2 | 2026-06-06 |
| CSN8825 | China Southern Airlines | 1 | 2026-06-10 |
| CSN8824 | - | 1 | 2026-07-11 |
| CSN8823 | - | 1 | 2026-07-11 |
| CSN3866 | - | 1 | 2026-06-20 |
| CSN3865 | - | 1 | 2026-06-19 |
| CSN3825 | - | 1 | 2026-06-16 |
| CSN3712 | China Southern Airlines | 1 | 2026-04-20 |
| CSN3232 | China Southern Airlines | 1 | 2026-04-24 |
Recent flights last 39
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-18 | CSN3279 | - | Jul 18, 03:25 UTC | Jul 18, 03:45 UTC | 20m |
| 2026-07-17 | CSN3279 | - | Jul 17, 03:14 UTC | Jul 17, 03:25 UTC | 10m |
| 2026-07-17 | CSN3280 | - | Jul 17, 01:29 UTC | Jul 17, 01:45 UTC | 15m |
| 2026-07-14 | CSN3280 | - | Jul 14, 02:05 UTC | Jul 14, 02:15 UTC | 10m |
| 2026-07-11 | CSN8824 | - | Jul 11, 10:00 UTC | Jul 11, 10:10 UTC | 10m |
| 2026-07-11 | CSN8823 | - | Jul 11, 05:20 UTC | Jul 11, 05:31 UTC | 10m |
| 2026-07-08 | CSN3279 | - | Jul 8, 05:05 UTC | Jul 8, 05:20 UTC | 15m |
| 2026-07-08 | CSN3280 | - | Jul 8, 02:00 UTC | Jul 8, 02:10 UTC | 10m |
| 2026-07-03 | CSN3279 | - | Jul 3, 03:25 UTC | Jul 3, 03:40 UTC | 15m |
| 2026-07-03 | CSN3280 | - | Jul 3, 01:50 UTC | Jul 3, 02:05 UTC | 15m |
| 2026-07-01 | CSN3280 | - | Jul 1, 01:50 UTC | Jul 1, 02:00 UTC | 10m |
| 2026-06-22 | CSN3279 | - | Jun 22, 03:19 UTC | Jun 22, 03:30 UTC | 10m |
| 2026-06-20 | CSN3866 | - | Jun 20, 00:34 UTC | Jun 20, 06:45 UTC | 6h 10m |
| 2026-06-19 | CSN3865 | - | Jun 19, 07:34 UTC | Jun 20, 05:44 UTC | 22h 10m |
| 2026-06-16 | CSN3825 | - | Jun 16, 07:34 UTC | Jun 16, 16:00 UTC | 8h 25m |
| 2026-06-10 | CSN8825 | PKX → XIY | Jun 10, 13:30 UTC | Jun 10, 13:40 UTC | 10m |
| 2026-06-06 | CSN3793 | SZX → XIY | Jun 6, 16:24 UTC | Jun 6, 16:34 UTC | 10m |
| 2026-06-06 | CSN3794 | XIY → SZX | Jun 6, 14:04 UTC | Jun 6, 14:14 UTC | 10m |
| 2026-06-05 | CSN3279 | SZX → XIY | Jun 5, 03:15 UTC | Jun 5, 03:25 UTC | 10m |
| 2026-06-05 | CSN3280 | XIY → SZX | Jun 5, 01:40 UTC | Jun 5, 01:50 UTC | 10m |
| 2026-06-01 | CSN3793 | SZX → XIY | Jun 1, 14:25 UTC | Jun 1, 14:35 UTC | 10m |
| 2026-05-26 | CSN3280 | XIY → SZX | May 26, 01:34 UTC | May 26, 01:44 UTC | 10m |
| 2026-05-25 | CSN3793 | SZX → XIY | May 25, 14:25 UTC | May 25, 14:35 UTC | 10m |
| 2026-05-25 | CSN3794 | XIY → SZX | May 25, 12:20 UTC | May 25, 12:35 UTC | 15m |
| 2026-05-23 | CSN3279 | SZX → XIY | May 23, 04:15 UTC | May 23, 04:35 UTC | 20m |
| 2026-05-23 | CSN3280 | XIY → SZX | May 23, 02:05 UTC | May 23, 02:20 UTC | 15m |
| 2026-05-22 | CSN3793 | SZX → XIY | May 22, 15:10 UTC | May 22, 15:20 UTC | 10m |
| 2026-05-20 | CSN3279 | SZX → XIY | May 20, 03:15 UTC | May 20, 03:25 UTC | 10m |
| 2026-05-17 | CSN3280 | XIY → SZX | May 17, 01:35 UTC | May 17, 01:50 UTC | 15m |
| 2026-05-15 | CSN3279 | SZX → XIY | May 15, 03:20 UTC | May 15, 03:30 UTC | 10m |
| 2026-05-15 | CSN3280 | XIY → SZX | May 15, 01:20 UTC | May 15, 01:30 UTC | 10m |
| 2026-05-13 | CSN3279 | SZX → XIY | May 13, 03:25 UTC | May 13, 03:35 UTC | 10m |
| 2026-04-30 | CSN3279 | SZX → XIY | Apr 30, 03:20 UTC | Apr 30, 03:30 UTC | 10m |
| 2026-04-25 | CSN3280 | XIY → SZX | Apr 25, 01:35 UTC | Apr 25, 01:50 UTC | 15m |
| 2026-04-24 | CSN3232 | XIY → CAN | Apr 24, 10:20 UTC | Apr 24, 10:35 UTC | 15m |
| 2026-04-22 | CSN3280 | XIY → SZX | Apr 22, 01:40 UTC | Apr 22, 01:50 UTC | 10m |
| 2026-04-20 | CSN3712 | TNA → CAN | Apr 20, 12:35 UTC | Apr 20, 12:45 UTC | 10m |
| 2026-04-17 | CSN3279 | SZX → XIY | Apr 17, 03:25 UTC | Apr 17, 03:35 UTC | 10m |
| 2026-04-16 | CSN3793 | SZX → XIY | Apr 16, 16:20 UTC | Apr 16, 16:35 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-5676 page for operator, model, and routing details .