sensors Mode-S transponder
7803B1
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6909 · AIRBUS A-320
- Hex
- 7803B1
- Octal
- 36001661
- Decimal
- 7,865,265
- Country
- CN
- Tail
- B-6909
- Type
- A320
- Flights observed
- 41
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 17h ago
Last known position
Country allocation
The ICAO 24-bit address 7803B1 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 |
|---|---|---|---|
| CSN6364 | China Southern Airlines | 6 | 2026-05-26 |
| CSN6603 | - | 5 | 2026-04-27 |
| CSN6194 | China Southern Airlines | 4 | 2026-05-27 |
| CSN6620 | China Southern Airlines | 3 | 2026-05-18 |
| CSN6619 | China Southern Airlines | 3 | 2026-05-18 |
| CSN6155 | China Southern Airlines | 3 | 2026-05-06 |
| CSN6146 | China Southern Airlines | 3 | 2026-05-29 |
| CSN6400 | China Southern Airlines | 2 | 2026-05-01 |
| CSN6772 | China Southern Airlines | 1 | 2026-04-21 |
| CSN6610 | - | 1 | 2026-04-13 |
| CSN6609 | China Southern Airlines | 1 | 2026-04-13 |
| CSN6545 | China Southern Airlines | 1 | 2026-05-21 |
| CSN6377 | China Southern Airlines | 1 | 2026-04-18 |
| CSN6168 | China Southern Airlines | 1 | 2026-05-29 |
| CSN6145 | China Southern Airlines | 1 | 2026-05-06 |
| CSN5588 | China Southern Airlines | 1 | 2026-05-14 |
| CSN5587 | China Southern Airlines | 1 | 2026-05-14 |
| CSN5470 | China Southern Airlines | 1 | 2026-05-15 |
| CSN3813 | China Southern Airlines | 1 | 2026-04-27 |
| CSN3353 | - | 1 | 2026-04-26 |
Recent flights last 41
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CSN6168 | PKX → CGQ | May 29, 12:35 UTC | May 29, 12:50 UTC | 15m |
| 2026-05-29 | CSN6146 | PKX → CGQ | May 29, 03:50 UTC | May 29, 04:00 UTC | 10m |
| 2026-05-28 | CSN6146 | PKX → CGQ | May 28, 03:45 UTC | May 28, 04:00 UTC | 15m |
| 2026-05-27 | CSN6194 | PKX → CGQ | May 27, 09:50 UTC | May 27, 10:00 UTC | 10m |
| 2026-05-26 | CSN6364 | CKG → CGQ | May 26, 07:24 UTC | May 26, 07:45 UTC | 20m |
| 2026-05-25 | CSN6364 | CKG → CGQ | May 25, 09:45 UTC | May 26, 07:45 UTC | 21h 59m |
| 2026-05-21 | CSN6545 | CGQ → HGH | May 21, 00:15 UTC | May 21, 00:55 UTC | 40m |
| 2026-05-19 | CSN6364 | CKG → CGQ | May 19, 07:35 UTC | May 19, 07:55 UTC | 20m |
| 2026-05-18 | CSN6364 | CKG → CGQ | May 18, 12:00 UTC | May 19, 07:55 UTC | 19h 54m |
| 2026-05-18 | CSN6620 | ZUH → WUH | May 18, 07:55 UTC | May 18, 08:05 UTC | 10m |
| 2026-05-18 | CSN6619 | CGQ → WUH | May 18, 01:45 UTC | May 18, 02:00 UTC | 15m |
| 2026-05-15 | CSN5470 | CGQ → HGH | May 15, 05:45 UTC | May 15, 06:10 UTC | 25m |
| 2026-05-14 | CSN5588 | ZUH → HGH | May 14, 14:25 UTC | May 14, 14:45 UTC | 20m |
| 2026-05-14 | CSN5587 | HGH → ZUH | May 14, 13:01 UTC | May 14, 13:15 UTC | 15m |
| 2026-05-09 | CSN6364 | CKG → CGQ | May 9, 07:30 UTC | May 10, 02:10 UTC | 18h 40m |
| 2026-05-08 | CSN6364 | CKG → CGQ | May 8, 12:20 UTC | May 9, 07:40 UTC | 19h 20m |
| 2026-05-08 | CSN6620 | ZUH → WUH | May 8, 12:04 UTC | May 9, 07:40 UTC | 19h 35m |
| 2026-05-08 | CSN6620 | ZUH → WUH | May 8, 08:05 UTC | May 8, 08:14 UTC | 10m |
| 2026-05-08 | CSN6619 | CGQ → WUH | May 8, 06:25 UTC | May 8, 06:39 UTC | 15m |
| 2026-05-08 | CSN6619 | CGQ → WUH | May 8, 01:35 UTC | May 8, 01:49 UTC | 15m |
| 2026-05-06 | CSN6155 | CGQ → PVG | May 6, 07:55 UTC | May 7, 02:15 UTC | 18h 20m |
| 2026-05-06 | CSN6146 | PKX → CGQ | May 6, 03:50 UTC | May 7, 02:15 UTC | 22h 24m |
| 2026-05-06 | CSN6145 | CGQ → PKX | May 6, 02:05 UTC | May 6, 02:15 UTC | 10m |
| 2026-05-05 | CSN6194 | PKX → CGQ | May 5, 09:10 UTC | May 5, 09:20 UTC | 10m |
| 2026-05-04 | CSN6155 | CGQ → PVG | May 4, 07:15 UTC | May 4, 07:45 UTC | 30m |
| 2026-05-03 | CSN6194 | PKX → CGQ | May 3, 09:20 UTC | May 4, 07:45 UTC | 22h 25m |
| 2026-05-02 | CSN6194 | PKX → CGQ | May 2, 09:30 UTC | May 2, 09:45 UTC | 15m |
| 2026-05-01 | CSN6400 | XIY → CGQ | May 1, 01:55 UTC | May 1, 12:40 UTC | 10h 45m |
| 2026-04-30 | CSN6400 | XIY → CGQ | Apr 30, 08:15 UTC | May 1, 02:15 UTC | 18h 0m |
| 2026-04-29 | CSN6155 | CGQ → PVG | Apr 29, 03:24 UTC | Apr 29, 07:59 UTC | 4h 35m |
| 2026-04-27 | CSN6603 | - | Apr 27, 23:10 UTC | Apr 27, 23:30 UTC | 20m |
| 2026-04-27 | CSN3813 | CAN → HFE | Apr 27, 02:45 UTC | Apr 27, 02:55 UTC | 10m |
| 2026-04-26 | CSN3353 | - | Apr 26, 15:15 UTC | Apr 26, 15:25 UTC | 10m |
| 2026-04-25 | CSN6603 | - | Apr 25, 23:30 UTC | Apr 25, 23:45 UTC | 15m |
| 2026-04-24 | CSN6603 | - | Apr 24, 23:20 UTC | Apr 24, 23:35 UTC | 15m |
| 2026-04-21 | CSN6772 | CAN → HAK | Apr 21, 14:45 UTC | Apr 21, 14:55 UTC | 10m |
| 2026-04-19 | CSN6603 | - | Apr 19, 23:10 UTC | Apr 19, 23:30 UTC | 20m |
| 2026-04-18 | CSN6603 | - | Apr 18, 23:35 UTC | Apr 18, 23:50 UTC | 15m |
| 2026-04-18 | CSN6377 | CGQ → CAN | Apr 18, 08:30 UTC | Apr 18, 12:45 UTC | 4h 15m |
| 2026-04-13 | CSN6610 | - | Apr 13, 09:10 UTC | Apr 13, 09:25 UTC | 15m |
| 2026-04-13 | CSN6609 | CGQ → SZX | Apr 13, 07:20 UTC | Apr 13, 07:40 UTC | 20m |
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-6909 page for operator, model, and routing details .