sensors Mode-S transponder
781672
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-307N · AIRBUS A-320neo
- Hex
- 781672
- Octal
- 36013162
- Decimal
- 7,870,066
- Country
- CN
- Tail
- B-307N
- Type
- A20N
- Flights observed
- 52
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 781672 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 |
|---|---|---|---|
| CQH8522 | Spring Airlines | 7 | 2026-05-05 |
| CQH6293 | Spring Airlines | 5 | 2026-05-17 |
| CQH6523 | Spring Airlines | 3 | 2026-05-22 |
| CQH6516 | Spring Airlines | 3 | 2026-04-17 |
| CQH6515 | Spring Airlines | 3 | 2026-04-17 |
| CQH8715 | Spring Airlines | 2 | 2026-04-16 |
| CQH8666 | Spring Airlines | 2 | 2026-05-04 |
| CQH8665 | Spring Airlines | 2 | 2026-05-04 |
| CQH6524 | Spring Airlines | 2 | 2026-05-22 |
| CQH6294 | Spring Airlines | 2 | 2026-05-17 |
| CQH8920 | Spring Airlines | 1 | 2026-05-16 |
| CQH8780 | Spring Airlines | 1 | 2026-04-17 |
| CQH8779 | Spring Airlines | 1 | 2026-04-17 |
| CQH8716 | Spring Airlines | 1 | 2026-04-16 |
| CQH8602 | Spring Airlines | 1 | 2026-05-10 |
| CQH8598 | Spring Airlines | 1 | 2026-05-21 |
| CQH8597 | Spring Airlines | 1 | 2026-05-21 |
| CQH8521 | Spring Airlines | 1 | 2026-05-04 |
| CQH7636 | Spring Airlines | 1 | 2026-05-19 |
| CQH7556 | Spring Airlines | 1 | 2026-05-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | CQH7416 | CSX → LHW | Jun 1, 09:05 UTC | Jun 1, 09:15 UTC | 10m |
| 2026-05-25 | CQH7556 | SZX → SHA | May 25, 22:10 UTC | May 25, 22:19 UTC | 10m |
| 2026-05-25 | CQH6596 | TNA → SZX | May 25, 15:40 UTC | May 25, 15:55 UTC | 15m |
| 2026-05-22 | CQH6524 | KUL → PVG | May 22, 10:55 UTC | May 22, 15:00 UTC | 4h 5m |
| 2026-05-22 | CQH6523 | PVG → KUL | May 22, 08:55 UTC | May 22, 09:20 UTC | 25m |
| 2026-05-21 | CQH6523 | PVG → KUL | May 21, 11:55 UTC | May 22, 06:00 UTC | 18h 5m |
| 2026-05-21 | CQH8598 | HKG → PVG | May 21, 08:45 UTC | May 22, 06:00 UTC | 21h 15m |
| 2026-05-21 | CQH8597 | PVG → HKG | May 21, 03:25 UTC | May 21, 03:45 UTC | 20m |
| 2026-05-19 | CQH7636 | SHE → PVG | May 19, 02:20 UTC | May 19, 03:05 UTC | 45m |
| 2026-05-17 | CQH6294 | BKK → XIY | May 17, 20:01 UTC | May 17, 20:25 UTC | 25m |
| 2026-05-17 | CQH6293 | XIY → BKK | May 17, 16:50 UTC | May 17, 17:15 UTC | 25m |
| 2026-05-16 | CQH8920 | SHE → HGH | May 16, 09:40 UTC | May 16, 10:25 UTC | 45m |
| 2026-05-11 | CQH7050 | CJJ → PVG | May 11, 03:00 UTC | May 11, 03:40 UTC | 40m |
| 2026-05-10 | CQH8602 | NGO → PVG | May 10, 06:35 UTC | May 11, 01:40 UTC | 19h 5m |
| 2026-05-09 | CQH6524 | KUL → PVG | May 9, 12:35 UTC | May 10, 05:00 UTC | 16h 25m |
| 2026-05-09 | CQH6523 | PVG → KUL | May 9, 06:35 UTC | May 9, 11:05 UTC | 4h 30m |
| 2026-05-07 | CQH6650 | BKK → YTY | May 7, 20:15 UTC | May 7, 21:10 UTC | 55m |
| 2026-05-07 | CQH6649 | YTY → BKK | May 7, 16:50 UTC | May 7, 17:40 UTC | 50m |
| 2026-05-05 | CQH8522 | HKT → PVG | May 5, 17:30 UTC | May 6, 12:05 UTC | 18h 35m |
| 2026-05-05 | CQH8522 | HKT → PVG | May 5, 14:35 UTC | May 6, 12:05 UTC | 21h 30m |
| 2026-05-05 | CQH8522 | HKT → PVG | May 5, 12:35 UTC | May 6, 12:05 UTC | 23h 30m |
| 2026-05-05 | CQH8522 | HKT → PVG | May 5, 12:25 UTC | May 6, 02:40 UTC | 14h 15m |
| 2026-05-05 | CQH8522 | HKT → PVG | May 5, 06:35 UTC | May 6, 02:40 UTC | 20h 5m |
| 2026-05-05 | CQH8522 | HKT → PVG | May 5, 02:35 UTC | May 6, 02:30 UTC | 23h 55m |
| 2026-05-05 | CQH8522 | HKT → PVG | May 5, 02:15 UTC | May 5, 20:10 UTC | 17h 55m |
| 2026-05-04 | CQH8521 | PVG → HKT | May 4, 16:35 UTC | May 5, 15:10 UTC | 22h 36m |
| 2026-05-04 | CQH8666 | HKT → PVG | May 4, 16:00 UTC | May 5, 14:30 UTC | 22h 31m |
| 2026-05-04 | CQH8666 | HKT → PVG | May 4, 12:35 UTC | May 5, 12:25 UTC | 23h 51m |
| 2026-05-04 | CQH8665 | PVG → HKT | May 4, 10:35 UTC | May 5, 06:45 UTC | 20h 11m |
| 2026-05-04 | CQH8665 | PVG → HKT | May 4, 04:55 UTC | May 5, 02:35 UTC | 21h 41m |
| 2026-05-02 | CQH6826 | - | May 2, 10:40 UTC | May 3, 03:00 UTC | 16h 20m |
| 2026-05-02 | CQH6825 | - | May 2, 06:35 UTC | May 2, 09:15 UTC | 2h 40m |
| 2026-04-28 | CQH6294 | BKK → XIY | Apr 28, 20:00 UTC | Apr 28, 20:50 UTC | 50m |
| 2026-04-28 | CQH6293 | XIY → BKK | Apr 28, 17:20 UTC | Apr 28, 17:55 UTC | 35m |
| 2026-04-27 | CQH6293 | XIY → BKK | Apr 27, 20:35 UTC | Apr 28, 17:55 UTC | 21h 20m |
| 2026-04-27 | CQH6293 | XIY → BKK | Apr 27, 20:05 UTC | Apr 28, 17:55 UTC | 21h 50m |
| 2026-04-27 | CQH6293 | XIY → BKK | Apr 27, 16:20 UTC | Apr 27, 17:25 UTC | 1h 5m |
| 2026-04-26 | CQH7502 | BKK → TFU | Apr 26, 04:25 UTC | Apr 26, 10:40 UTC | 6h 15m |
| 2026-04-26 | CQH7501 | TFU → BKK | Apr 26, 01:40 UTC | Apr 26, 02:50 UTC | 1h 10m |
| 2026-04-17 | CQH6516 | KUL → PVG | Apr 17, 20:25 UTC | Apr 17, 21:20 UTC | 55m |
| 2026-04-17 | CQH6516 | KUL → PVG | Apr 17, 18:30 UTC | Apr 17, 18:50 UTC | 20m |
| 2026-04-17 | CQH6516 | KUL → PVG | Apr 17, 17:25 UTC | Apr 17, 17:35 UTC | 10m |
| 2026-04-17 | CQH6515 | PVG → KUL | Apr 17, 15:00 UTC | Apr 17, 15:15 UTC | 15m |
| 2026-04-17 | CQH6515 | PVG → KUL | Apr 17, 13:40 UTC | Apr 17, 13:55 UTC | 15m |
| 2026-04-17 | CQH6515 | PVG → KUL | Apr 17, 10:45 UTC | Apr 17, 11:15 UTC | 30m |
| 2026-04-17 | CQH8780 | SYX → SHA | Apr 17, 06:30 UTC | Apr 17, 06:50 UTC | 20m |
| 2026-04-17 | CQH8779 | SHA → SYX | Apr 17, 01:40 UTC | Apr 17, 03:05 UTC | 1h 25m |
| 2026-04-16 | CQH8716 | HKG → PVG | Apr 16, 05:34 UTC | Apr 16, 06:40 UTC | 1h 5m |
| 2026-04-16 | CQH8715 | PVG → HKG | Apr 16, 03:30 UTC | Apr 16, 03:45 UTC | 15m |
| 2026-04-16 | CQH8715 | PVG → HKG | Apr 16, 02:19 UTC | Apr 16, 02:54 UTC | 35m |
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-307N page for operator, model, and routing details .