sensors Mode-S transponder
7805C3
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6603 · AIRBUS A-321
- Hex
- 7805C3
- Octal
- 36002703
- Decimal
- 7,865,795
- Country
- CN
- Tail
- B-6603
- Type
- A321
- Flights observed
- 31
- Distinct callsigns
- 15
- Country
- CN
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 7805C3 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CCA471 | Air China | 5 | 2026-05-14 |
| CCA402 | Air China | 5 | 2026-05-29 |
| CCA401 | Air China | 5 | 2026-05-29 |
| CCA472 | Air China | 3 | 2026-05-14 |
| CCA412 | Air China | 2 | 2026-06-04 |
| CCA411 | Air China | 2 | 2026-06-04 |
| CCA4182 | Air China | 1 | 2026-04-18 |
| CCA4120 | Air China | 1 | 2026-05-21 |
| CCA2729 | Air China | 1 | 2026-05-07 |
| CCA2711 | Air China | 1 | 2026-05-01 |
| CCA1913 | Air China | 1 | 2026-04-19 |
| CCA1513 | Air China | 1 | 2026-04-20 |
| CCA1417 | Air China | 1 | 2026-04-21 |
| CCA1232 | Air China | 1 | 2026-04-20 |
| CCA1231 | Air China | 1 | 2026-04-19 |
Recent flights last 31
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-04 | CCA412 | HKG → CTU | Jun 4, 05:25 UTC | Jun 4, 05:45 UTC | 20m |
| 2026-06-04 | CCA411 | CTU → HKG | Jun 4, 03:00 UTC | Jun 4, 03:35 UTC | 35m |
| 2026-05-29 | CCA402 | ICN → TFU | May 29, 06:05 UTC | May 29, 06:25 UTC | 20m |
| 2026-05-29 | CCA401 | TFU → ICN | May 29, 03:05 UTC | May 29, 03:25 UTC | 20m |
| 2026-05-28 | CCA412 | HKG → CTU | May 28, 05:35 UTC | May 29, 02:15 UTC | 20h 40m |
| 2026-05-28 | CCA411 | CTU → HKG | May 28, 03:00 UTC | May 28, 03:35 UTC | 35m |
| 2026-05-25 | CCA402 | ICN → TFU | May 25, 06:05 UTC | May 25, 06:25 UTC | 20m |
| 2026-05-25 | CCA401 | TFU → ICN | May 25, 03:15 UTC | May 25, 03:35 UTC | 20m |
| 2026-05-21 | CCA4120 | PEK → CTU | May 21, 03:10 UTC | May 21, 03:30 UTC | 20m |
| 2026-05-15 | CCA402 | ICN → TFU | May 15, 06:35 UTC | May 15, 06:50 UTC | 15m |
| 2026-05-15 | CCA401 | TFU → ICN | May 15, 03:20 UTC | May 15, 03:40 UTC | 20m |
| 2026-05-14 | CCA472 | BKK → TFU | May 14, 11:25 UTC | May 14, 12:20 UTC | 55m |
| 2026-05-14 | CCA471 | TFU → BKK | May 14, 08:50 UTC | May 14, 09:50 UTC | 1h 0m |
| 2026-05-13 | CCA471 | TFU → BKK | May 13, 11:30 UTC | May 14, 09:50 UTC | 22h 20m |
| 2026-05-13 | CCA471 | TFU → BKK | May 13, 08:55 UTC | May 13, 09:55 UTC | 1h 0m |
| 2026-05-10 | CCA472 | BKK → TFU | May 10, 11:25 UTC | May 10, 12:15 UTC | 50m |
| 2026-05-10 | CCA471 | TFU → BKK | May 10, 08:45 UTC | May 10, 09:50 UTC | 1h 5m |
| 2026-05-07 | CCA2729 | TFU → HRB | May 7, 01:05 UTC | May 7, 01:20 UTC | 15m |
| 2026-05-02 | CCA402 | ICN → TFU | May 2, 06:05 UTC | May 2, 06:25 UTC | 20m |
| 2026-05-02 | CCA401 | TFU → ICN | May 2, 03:10 UTC | May 2, 03:20 UTC | 10m |
| 2026-05-01 | CCA2711 | TFU → SHE | May 1, 10:25 UTC | May 2, 02:15 UTC | 15h 50m |
| 2026-04-30 | CCA472 | BKK → TFU | Apr 30, 11:30 UTC | May 1, 10:35 UTC | 23h 5m |
| 2026-04-30 | CCA471 | TFU → BKK | Apr 30, 09:35 UTC | Apr 30, 10:15 UTC | 40m |
| 2026-04-24 | CCA402 | ICN → TFU | Apr 24, 06:00 UTC | Apr 24, 06:15 UTC | 15m |
| 2026-04-24 | CCA401 | TFU → ICN | Apr 24, 03:40 UTC | Apr 24, 03:55 UTC | 15m |
| 2026-04-21 | CCA1417 | PEK → TFU | Apr 21, 05:00 UTC | Apr 21, 11:10 UTC | 6h 10m |
| 2026-04-20 | CCA1513 | PEK → NTG | Apr 20, 07:15 UTC | Apr 20, 07:25 UTC | 10m |
| 2026-04-20 | CCA1232 | XIY → PEK | Apr 20, 04:25 UTC | Apr 20, 04:40 UTC | 15m |
| 2026-04-19 | CCA1231 | PEK → XIY | Apr 19, 23:25 UTC | Apr 19, 23:55 UTC | 30m |
| 2026-04-19 | CCA1913 | PEK → CGO | Apr 19, 07:10 UTC | Apr 19, 07:30 UTC | 20m |
| 2026-04-18 | CCA4182 | PEK → CTU | Apr 18, 23:30 UTC | Apr 18, 23:45 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-6603 page for operator, model, and routing details .