sensors Mode-S transponder
781CAA
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-326Y · AIRBUS A-350-900
- Hex
- 781CAA
- Octal
- 36016252
- Decimal
- 7,871,658
- Country
- CN
- Tail
- B-326Y
- Type
- A359
- Flights observed
- 108
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 5h ago
Last known position
Country allocation
The ICAO 24-bit address 781CAA 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 |
|---|---|---|---|
| CCA445 | Air China | 11 | 2026-05-29 |
| CCA950 | Air China | 8 | 2026-04-24 |
| CCA446 | Air China | 7 | 2026-05-27 |
| CCA424 | Air China | 7 | 2026-05-29 |
| CCA949 | Air China | 6 | 2026-05-26 |
| CCA935 | Air China | 6 | 2026-05-08 |
| CCA852 | Air China | 5 | 2026-05-25 |
| CCA851 | Air China | 5 | 2026-05-25 |
| CCA423 | Air China | 5 | 2026-05-28 |
| CCA912 | Air China | 4 | 2026-05-01 |
| CCA867 | Air China | 4 | 2026-04-19 |
| CCA877 | Air China | 3 | 2026-05-13 |
| CCA1314 | Air China | 3 | 2026-05-22 |
| CCA1307 | Air China | 3 | 2026-04-28 |
| CCA967 | Air China | 2 | 2026-05-06 |
| CCA936 | Air China | 2 | 2026-05-08 |
| CCA911 | Air China | 2 | 2026-04-30 |
| CCA868 | Air China | 2 | 2026-04-20 |
| CCA848 | Air China | 2 | 2026-05-05 |
| CCA846 | Air China | 2 | 2026-04-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CCA445 | TFU → MXP | May 29, 21:30 UTC | May 30, 04:10 UTC | 6h 40m |
| 2026-05-29 | CCA445 | TFU → MXP | May 29, 03:15 UTC | May 30, 02:30 UTC | 23h 15m |
| 2026-05-29 | CCA424 | LHR → TFU | May 29, 00:35 UTC | May 30, 00:30 UTC | 23h 55m |
| 2026-05-28 | CCA424 | LHR → TFU | May 28, 22:35 UTC | May 29, 22:25 UTC | 23h 50m |
| 2026-05-28 | CCA424 | LHR → TFU | May 28, 21:15 UTC | May 29, 04:00 UTC | 6h 45m |
| 2026-05-28 | CCA423 | TFU → LHR | May 28, 11:35 UTC | May 28, 18:15 UTC | 6h 40m |
| 2026-05-27 | CCA446 | MXP → TFU | May 27, 12:35 UTC | May 28, 12:25 UTC | 23h 50m |
| 2026-05-27 | CCA446 | MXP → TFU | May 27, 11:20 UTC | May 27, 14:10 UTC | 2h 50m |
| 2026-05-26 | CCA949 | PEK → MXP | May 26, 17:44 UTC | May 27, 03:59 UTC | 10h 15m |
| 2026-05-25 | CCA852 | NCE → PEK | May 25, 20:45 UTC | May 25, 20:59 UTC | 15m |
| 2026-05-25 | CCA852 | NCE → PEK | May 25, 11:55 UTC | May 25, 18:05 UTC | 6h 10m |
| 2026-05-25 | CCA851 | PEK → NCE | May 25, 04:20 UTC | May 25, 05:35 UTC | 1h 15m |
| 2026-05-23 | CCA840 | BCN → PVG | May 23, 10:45 UTC | May 23, 18:05 UTC | 7h 20m |
| 2026-05-22 | CCA839 | PVG → BCN | May 22, 21:50 UTC | May 23, 05:45 UTC | 7h 54m |
| 2026-05-22 | CCA1314 | SZX → PEK | May 22, 08:20 UTC | May 22, 08:30 UTC | 10m |
| 2026-05-22 | CCA1313 | PEK → SZX | May 22, 03:05 UTC | May 22, 03:25 UTC | 20m |
| 2026-05-21 | CCA852 | NCE → PEK | May 21, 20:40 UTC | May 21, 21:05 UTC | 25m |
| 2026-05-21 | CCA852 | NCE → PEK | May 21, 11:50 UTC | May 21, 18:10 UTC | 6h 20m |
| 2026-05-20 | CCA851 | PEK → NCE | May 20, 22:35 UTC | May 21, 05:35 UTC | 7h 0m |
| 2026-05-20 | CCA851 | PEK → NCE | May 20, 19:30 UTC | May 20, 19:40 UTC | 10m |
| 2026-05-13 | CCA878 | CPH → PEK | May 13, 17:10 UTC | May 13, 22:30 UTC | 5h 20m |
| 2026-05-13 | CCA877 | PEK → CPH | May 13, 08:00 UTC | May 13, 15:10 UTC | 7h 10m |
| 2026-05-12 | CCA877 | PEK → CPH | May 12, 16:45 UTC | May 13, 15:10 UTC | 22h 25m |
| 2026-05-12 | CCA877 | PEK → CPH | May 12, 14:35 UTC | May 13, 14:30 UTC | 23h 55m |
| 2026-05-12 | CCA842 | VIE → PEK | May 12, 12:35 UTC | May 13, 12:30 UTC | 23h 55m |
| 2026-05-12 | CCA842 | VIE → PEK | May 12, 11:45 UTC | May 13, 09:55 UTC | 22h 10m |
| 2026-05-11 | CCA841 | PEK → VIE | May 11, 21:15 UTC | May 12, 05:05 UTC | 7h 50m |
| 2026-05-10 | CCA852 | NCE → PEK | May 10, 11:50 UTC | May 10, 17:55 UTC | 6h 5m |
| 2026-05-09 | CCA851 | PEK → NCE | May 9, 21:25 UTC | May 10, 05:45 UTC | 8h 20m |
| 2026-05-08 | CCA936 | FRA → PVG | May 8, 17:40 UTC | May 9, 02:10 UTC | 8h 30m |
| 2026-05-08 | CCA935 | PVG → FRA | May 8, 15:10 UTC | May 8, 15:20 UTC | 10m |
| 2026-05-08 | CCA935 | PVG → FRA | May 8, 04:49 UTC | May 8, 15:05 UTC | 10h 15m |
| 2026-05-07 | CCA935 | PVG → FRA | May 7, 12:35 UTC | May 8, 12:30 UTC | 23h 55m |
| 2026-05-07 | CCA968 | MXP → PVG | May 7, 10:45 UTC | May 8, 08:59 UTC | 22h 15m |
| 2026-05-06 | CCA967 | PVG → MXP | May 6, 12:45 UTC | May 7, 05:45 UTC | 16h 59m |
| 2026-05-06 | CCA967 | PVG → MXP | May 6, 10:01 UTC | May 7, 05:45 UTC | 19h 44m |
| 2026-05-05 | CCA848 | LGW → PVG | May 5, 12:35 UTC | May 6, 07:05 UTC | 18h 30m |
| 2026-05-05 | CCA848 | LGW → PVG | May 5, 10:35 UTC | May 6, 07:05 UTC | 20h 30m |
| 2026-05-04 | CCA851 | PEK → NCE | May 4, 22:35 UTC | May 5, 05:50 UTC | 7h 15m |
| 2026-05-03 | CCA936 | FRA → PVG | May 3, 17:35 UTC | May 4, 02:04 UTC | 8h 30m |
| 2026-05-03 | CCA935 | PVG → FRA | May 3, 04:50 UTC | May 3, 14:50 UTC | 10h 0m |
| 2026-05-02 | CCA935 | PVG → FRA | May 2, 15:15 UTC | May 3, 14:30 UTC | 23h 14m |
| 2026-05-02 | CCA935 | PVG → FRA | May 2, 12:35 UTC | May 3, 12:20 UTC | 23h 44m |
| 2026-05-02 | CCA840 | BCN → PVG | May 2, 10:35 UTC | May 3, 09:05 UTC | 22h 29m |
| 2026-05-01 | CCA839 | PVG → BCN | May 1, 13:20 UTC | May 1, 22:25 UTC | 9h 5m |
| 2026-05-01 | CCA1314 | SZX → PEK | May 1, 10:45 UTC | May 1, 10:55 UTC | 10m |
| 2026-05-01 | CCA1314 | SZX → PEK | May 1, 08:20 UTC | May 1, 08:30 UTC | 10m |
| 2026-05-01 | CCA1313 | PEK → SZX | May 1, 03:25 UTC | May 1, 03:45 UTC | 20m |
| 2026-05-01 | CCA912 | ARN → PEK | May 1, 00:30 UTC | May 1, 00:50 UTC | 20m |
| 2026-04-30 | CCA912 | ARN → PEK | Apr 30, 17:20 UTC | Apr 30, 22:05 UTC | 4h 45m |
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-326Y page for operator, model, and routing details .