sensors Mode-S transponder
780996
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5719 · BOEING 737-800
- Hex
- 780996
- Octal
- 36004626
- Decimal
- 7,866,774
- Country
- CN
- Tail
- B-5719
- Type
- B738
- Flights observed
- 99
- Distinct callsigns
- 19
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 780996 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 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN5147 | - | 26 | 2026-06-18 |
| CSN6704 | - | 11 | 2026-07-12 |
| CSN3857 | - | 10 | 2026-07-09 |
| CSN3875 | - | 8 | 2026-06-18 |
| CSN5148 | China Southern Airlines | 6 | 2026-05-07 |
| CSN3876 | - | 6 | 2026-06-18 |
| CSN6195 | - | 5 | 2026-07-03 |
| CSN6703 | - | 4 | 2026-07-01 |
| CSN8540 | - | 3 | 2026-06-03 |
| CSN8539 | - | 3 | 2026-05-27 |
| CSN3883 | China Southern Airlines | 3 | 2026-06-07 |
| CSN3825 | - | 3 | 2026-07-13 |
| CSN8521 | - | 2 | 2026-07-02 |
| CSN6742 | - | 2 | 2026-07-08 |
| CSN3796 | China Southern Airlines | 2 | 2026-06-05 |
| CSN3886 | - | 1 | 2026-06-24 |
| CSN3885 | China Southern Airlines | 1 | 2026-06-24 |
| CSN3884 | China Southern Airlines | 1 | 2026-06-04 |
| CSN3826 | China Southern Airlines | 1 | 2026-05-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CSN3825 | - | Jul 13, 07:40 UTC | Jul 13, 07:55 UTC | 15m |
| 2026-07-12 | CSN6704 | - | Jul 12, 08:45 UTC | Jul 12, 08:55 UTC | 10m |
| 2026-07-11 | - | - | Jul 11, 00:35 UTC | Jul 11, 00:55 UTC | 20m |
| 2026-07-09 | CSN3857 | - | Jul 9, 23:45 UTC | Jul 10, 11:55 UTC | 12h 10m |
| 2026-07-08 | CSN6742 | - | Jul 8, 12:30 UTC | Jul 9, 03:45 UTC | 15h 15m |
| 2026-07-08 | CSN6742 | - | Jul 8, 09:10 UTC | Jul 9, 03:45 UTC | 18h 35m |
| 2026-07-04 | CSN3857 | - | Jul 4, 12:25 UTC | Jul 5, 05:10 UTC | 16h 45m |
| 2026-07-04 | CSN3857 | - | Jul 4, 03:35 UTC | Jul 5, 00:05 UTC | 20h 30m |
| 2026-07-03 | CSN6195 | - | Jul 3, 23:45 UTC | Jul 4, 12:25 UTC | 12h 40m |
| 2026-07-02 | CSN8521 | - | Jul 2, 04:05 UTC | Jul 2, 14:20 UTC | 10h 15m |
| 2026-07-01 | CSN6704 | - | Jul 1, 08:35 UTC | Jul 1, 08:45 UTC | 10m |
| 2026-07-01 | CSN6703 | - | Jul 1, 01:55 UTC | Jul 1, 02:10 UTC | 15m |
| 2026-06-30 | CSN6704 | - | Jun 30, 08:25 UTC | Jun 30, 08:35 UTC | 10m |
| 2026-06-30 | CSN6703 | - | Jun 30, 03:55 UTC | Jun 30, 04:05 UTC | 10m |
| 2026-06-29 | CSN6704 | - | Jun 29, 08:35 UTC | Jun 29, 08:44 UTC | 10m |
| 2026-06-29 | CSN6703 | - | Jun 29, 01:29 UTC | Jun 29, 01:44 UTC | 15m |
| 2026-06-25 | CSN6704 | - | Jun 25, 08:55 UTC | Jun 25, 09:10 UTC | 15m |
| 2026-06-24 | CSN3886 | - | Jun 24, 14:39 UTC | Jun 24, 14:50 UTC | 10m |
| 2026-06-24 | CSN3885 | YIW → CAN | Jun 24, 12:40 UTC | Jun 24, 12:50 UTC | 10m |
| 2026-06-24 | CSN6704 | - | Jun 24, 08:30 UTC | Jun 24, 08:45 UTC | 15m |
| 2026-06-21 | CSN3857 | - | Jun 21, 23:55 UTC | Jun 22, 11:54 UTC | 12h 0m |
| 2026-06-20 | CSN6704 | - | Jun 20, 08:25 UTC | Jun 20, 08:39 UTC | 15m |
| 2026-06-19 | CSN6704 | - | Jun 19, 08:09 UTC | Jun 19, 08:24 UTC | 15m |
| 2026-06-18 | CSN5147 | - | Jun 18, 14:20 UTC | Jun 18, 17:05 UTC | 2h 45m |
| 2026-06-18 | CSN3876 | - | Jun 18, 10:20 UTC | Jun 18, 10:30 UTC | 10m |
| 2026-06-18 | CSN3875 | - | Jun 18, 07:45 UTC | Jun 18, 07:55 UTC | 10m |
| 2026-06-17 | CSN8521 | - | Jun 17, 04:21 UTC | Jun 17, 04:35 UTC | 15m |
| 2026-06-14 | CSN6704 | - | Jun 14, 08:35 UTC | Jun 14, 09:35 UTC | 1h 0m |
| 2026-06-12 | CSN6195 | - | Jun 12, 23:35 UTC | Jun 13, 05:35 UTC | 5h 59m |
| 2026-06-11 | CSN6704 | ZUH → YIW | Jun 11, 06:35 UTC | Jun 11, 06:50 UTC | 15m |
| 2026-06-07 | CSN3857 | - | Jun 7, 23:50 UTC | Jun 8, 05:00 UTC | 5h 10m |
| 2026-06-07 | CSN3883 | CAN → YIW | Jun 7, 03:05 UTC | Jun 7, 03:15 UTC | 10m |
| 2026-06-06 | CSN6704 | ZUH → YIW | Jun 6, 08:35 UTC | Jun 6, 08:45 UTC | 10m |
| 2026-06-05 | CSN3796 | YIW → CAN | Jun 5, 01:10 UTC | Jun 5, 01:30 UTC | 20m |
| 2026-06-04 | CSN3884 | YIW → CAN | Jun 4, 08:35 UTC | Jun 4, 08:50 UTC | 15m |
| 2026-06-04 | CSN3876 | SZX → YIW | Jun 4, 03:30 UTC | Jun 4, 03:40 UTC | 10m |
| 2026-06-04 | CSN3875 | YIW → SZX | Jun 4, 00:30 UTC | Jun 4, 00:50 UTC | 20m |
| 2026-06-03 | CSN8540 | - | Jun 3, 06:45 UTC | Jun 3, 12:00 UTC | 5h 15m |
| 2026-06-01 | CSN6195 | - | Jun 1, 23:40 UTC | Jun 2, 03:40 UTC | 4h 0m |
| 2026-05-30 | CSN3857 | - | May 30, 23:40 UTC | May 31, 12:05 UTC | 12h 25m |
| 2026-05-29 | CSN3825 | WUH → TAO | May 29, 08:40 UTC | May 29, 17:00 UTC | 8h 21m |
| 2026-05-28 | CSN3857 | - | May 28, 23:55 UTC | May 29, 05:10 UTC | 5h 15m |
| 2026-05-27 | CSN8539 | - | May 27, 06:40 UTC | May 27, 11:45 UTC | 5h 6m |
| 2026-05-26 | CSN3857 | - | May 26, 23:35 UTC | May 27, 04:45 UTC | 5h 10m |
| 2026-05-25 | CSN6195 | - | May 25, 23:40 UTC | May 26, 03:45 UTC | 4h 5m |
| 2026-05-25 | CSN6195 | - | May 25, 07:35 UTC | May 26, 03:45 UTC | 20h 9m |
| 2026-05-22 | CSN3826 | TAO → WUH | May 22, 17:05 UTC | May 23, 09:25 UTC | 16h 19m |
| 2026-05-22 | CSN3825 | WUH → TAO | May 22, 08:25 UTC | May 23, 03:35 UTC | 19h 9m |
| 2026-05-21 | CSN5147 | YIW → HAK | May 21, 09:55 UTC | May 21, 15:00 UTC | 5h 5m |
| 2026-05-21 | CSN3883 | CAN → YIW | May 21, 03:15 UTC | May 21, 03:25 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-5719 page for operator, model, and routing details .