sensors Mode-S transponder
781C0A
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-325C · AIRBUS A-320neo
- Hex
- 781C0A
- Octal
- 36016012
- Decimal
- 7,871,498
- Country
- CN
- Tail
- B-325C
- Type
- A20N
- Flights observed
- 87
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 9h ago
Last known position
Country allocation
The ICAO 24-bit address 781C0A 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 |
|---|---|---|---|
| CQH8779 | - | 4 | 2026-07-06 |
| CQH8597 | Spring Airlines | 4 | 2026-06-04 |
| CQH8934 | - | 3 | 2026-07-06 |
| CQH8598 | Spring Airlines | 3 | 2026-06-04 |
| CQH8522 | - | 3 | 2026-06-24 |
| CQH8860 | Spring Airlines | 2 | 2026-06-03 |
| CQH8755 | Spring Airlines | 2 | 2026-04-23 |
| CQH8671 | Spring Airlines | 2 | 2026-06-02 |
| CQH8664 | - | 2 | 2026-07-05 |
| CQH7588 | Spring Airlines | 2 | 2026-06-21 |
| CQH7587 | Spring Airlines | 2 | 2026-06-20 |
| CQH7419 | - | 2 | 2026-07-09 |
| CQH7348 | - | 2 | 2026-07-09 |
| CQH7286 | - | 2 | 2026-07-10 |
| CQH6922 | - | 2 | 2026-07-09 |
| CQH6921 | - | 2 | 2026-07-09 |
| CQH6516 | Spring Airlines | 2 | 2026-05-06 |
| CQH8952 | Spring Airlines | 1 | 2026-05-08 |
| CQH8951 | Spring Airlines | 1 | 2026-05-08 |
| CQH8950 | Spring Airlines | 1 | 2026-05-29 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | CQH6873 | - | Jul 14, 08:50 UTC | Jul 14, 09:00 UTC | 10m |
| 2026-07-13 | CQH8753 | - | Jul 13, 22:45 UTC | Jul 13, 23:00 UTC | 15m |
| 2026-07-13 | CQH8672 | - | Jul 13, 11:30 UTC | Jul 13, 11:45 UTC | 15m |
| 2026-07-11 | CQH7552 | - | Jul 11, 02:35 UTC | Jul 11, 03:15 UTC | 40m |
| 2026-07-10 | CQH7286 | - | Jul 10, 02:00 UTC | Jul 10, 04:10 UTC | 2h 10m |
| 2026-07-09 | CQH7419 | - | Jul 9, 22:40 UTC | Jul 10, 00:50 UTC | 2h 10m |
| 2026-07-09 | CQH7348 | - | Jul 9, 15:30 UTC | Jul 9, 15:50 UTC | 20m |
| 2026-07-09 | CQH7347 | - | Jul 9, 10:05 UTC | Jul 9, 10:15 UTC | 10m |
| 2026-07-09 | CQH6922 | - | Jul 9, 05:35 UTC | Jul 9, 05:50 UTC | 15m |
| 2026-07-09 | CQH6922 | - | Jul 9, 02:25 UTC | Jul 9, 02:40 UTC | 15m |
| 2026-07-09 | CQH6921 | - | Jul 9, 00:40 UTC | Jul 9, 00:55 UTC | 15m |
| 2026-07-08 | CQH6921 | - | Jul 8, 21:45 UTC | Jul 8, 21:55 UTC | 10m |
| 2026-07-07 | CQH7348 | - | Jul 7, 14:20 UTC | Jul 7, 14:35 UTC | 15m |
| 2026-07-06 | CQH8934 | - | Jul 6, 14:45 UTC | Jul 6, 16:00 UTC | 1h 15m |
| 2026-07-06 | CQH8779 | - | Jul 6, 00:20 UTC | Jul 6, 13:20 UTC | 13h 0m |
| 2026-07-05 | CQH8779 | - | Jul 5, 12:35 UTC | Jul 6, 12:25 UTC | 23h 50m |
| 2026-07-05 | CQH8664 | - | Jul 5, 11:30 UTC | Jul 6, 05:20 UTC | 17h 50m |
| 2026-07-05 | CQH8664 | - | Jul 5, 08:35 UTC | Jul 6, 05:20 UTC | 20h 45m |
| 2026-07-05 | CQH8663 | - | Jul 5, 06:55 UTC | Jul 6, 05:20 UTC | 22h 25m |
| 2026-07-02 | CQH8936 | - | Jul 2, 12:20 UTC | Jul 2, 13:00 UTC | 40m |
| 2026-06-29 | CQH6887 | - | Jun 29, 15:09 UTC | Jun 29, 15:19 UTC | 10m |
| 2026-06-27 | CQH6294 | - | Jun 27, 20:09 UTC | Jun 27, 21:29 UTC | 1h 20m |
| 2026-06-27 | CQH6293 | - | Jun 27, 16:04 UTC | Jun 27, 17:20 UTC | 1h 15m |
| 2026-06-26 | CQH6341 | SHE → HFE | Jun 26, 04:10 UTC | Jun 26, 04:24 UTC | 15m |
| 2026-06-24 | CQH8522 | - | Jun 24, 13:00 UTC | Jun 25, 07:54 UTC | 18h 55m |
| 2026-06-21 | CQH7588 | CJU → SHE | Jun 21, 02:55 UTC | Jun 21, 03:30 UTC | 35m |
| 2026-06-20 | CQH7587 | SHE → CJU | Jun 20, 23:59 UTC | Jun 21, 00:45 UTC | 45m |
| 2026-06-20 | CQH7588 | CJU → SHE | Jun 20, 02:59 UTC | Jun 21, 00:45 UTC | 21h 45m |
| 2026-06-19 | CQH7587 | SHE → CJU | Jun 19, 10:24 UTC | Jun 20, 00:54 UTC | 14h 30m |
| 2026-06-19 | CQH7502 | - | Jun 19, 04:50 UTC | Jun 20, 00:54 UTC | 20h 5m |
| 2026-06-19 | CQH7501 | - | Jun 19, 02:19 UTC | Jun 19, 02:50 UTC | 30m |
| 2026-06-10 | CQH7008 | PNH → CAN | Jun 10, 16:05 UTC | Jun 10, 16:30 UTC | 25m |
| 2026-06-10 | CQH8533 | - | Jun 10, 10:15 UTC | Jun 10, 10:25 UTC | 10m |
| 2026-06-04 | CQH8598 | HKG → PVG | Jun 4, 08:55 UTC | Jun 4, 12:10 UTC | 3h 15m |
| 2026-06-04 | CQH8597 | PVG → HKG | Jun 4, 03:45 UTC | Jun 4, 07:00 UTC | 3h 15m |
| 2026-06-03 | CQH8860 | HRB → PVG | Jun 3, 07:15 UTC | Jun 4, 03:55 UTC | 20h 40m |
| 2026-06-03 | CQH8860 | HRB → PVG | Jun 3, 03:20 UTC | Jun 3, 07:20 UTC | 4h 0m |
| 2026-06-02 | CQH8671 | HIA → HRB | Jun 2, 23:10 UTC | Jun 2, 23:20 UTC | 10m |
| 2026-06-02 | CQH6156 | ZUH → SJW | Jun 2, 05:25 UTC | Jun 2, 05:45 UTC | 20m |
| 2026-05-29 | CQH8950 | SZX → SHA | May 29, 15:50 UTC | May 29, 16:00 UTC | 10m |
| 2026-05-29 | CQH8949 | SHA → SZX | May 29, 12:35 UTC | May 29, 13:45 UTC | 1h 10m |
| 2026-05-21 | CQH6732 | - | May 21, 12:00 UTC | May 21, 12:25 UTC | 25m |
| 2026-05-21 | CQH6731 | - | May 21, 09:35 UTC | May 21, 10:05 UTC | 30m |
| 2026-05-19 | CQH7135 | LHW → TSN | May 19, 00:50 UTC | May 19, 01:15 UTC | 25m |
| 2026-05-18 | CQH6538 | FUK → PVG | May 18, 09:15 UTC | May 18, 09:25 UTC | 10m |
| 2026-05-15 | CQH8892 | BKK → PVG | May 15, 07:10 UTC | May 15, 09:35 UTC | 2h 25m |
| 2026-05-15 | CQH8891 | PVG → BKK | May 15, 03:25 UTC | May 15, 05:40 UTC | 2h 15m |
| 2026-05-13 | CQH6218 | NRT → PVG | May 13, 11:20 UTC | May 13, 12:45 UTC | 1h 25m |
| 2026-05-13 | CQH6217 | PVG → NRT | May 13, 02:00 UTC | May 13, 10:00 UTC | 8h 0m |
| 2026-05-12 | CQH8933 | CAN → CNX | May 12, 22:31 UTC | May 13, 00:50 UTC | 2h 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-325C page for operator, model, and routing details .