sensors Mode-S transponder
781BB6
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-324G · AIRBUS A-320neo
- Hex
- 781BB6
- Octal
- 36015666
- Decimal
- 7,871,414
- Country
- CN
- Tail
- B-324G
- Type
- A20N
- Flights observed
- 45
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 15h ago
Last known position
Country allocation
The ICAO 24-bit address 781BB6 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 |
|---|---|---|---|
| CQH6293 | Spring Airlines | 7 | 2026-05-03 |
| CQH8521 | Spring Airlines | 3 | 2026-05-06 |
| CQH6294 | Spring Airlines | 3 | 2026-05-03 |
| CQH8779 | Spring Airlines | 2 | 2026-05-08 |
| CQH8522 | Spring Airlines | 2 | 2026-04-15 |
| CQH7502 | Spring Airlines | 2 | 2026-05-29 |
| CQH7501 | Spring Airlines | 2 | 2026-05-29 |
| CQH7355 | Spring Airlines | 2 | 2026-04-18 |
| CQH8896 | Spring Airlines | 1 | 2026-05-11 |
| CQH8895 | Spring Airlines | 1 | 2026-05-10 |
| CQH8832 | Spring Airlines | 1 | 2026-05-04 |
| CQH8780 | Spring Airlines | 1 | 2026-05-08 |
| CQH8687 | - | 1 | 2026-04-19 |
| CQH8672 | Spring Airlines | 1 | 2026-04-17 |
| CQH8560 | Spring Airlines | 1 | 2026-04-14 |
| CQH8559 | Spring Airlines | 1 | 2026-04-14 |
| CQH8533 | - | 1 | 2026-05-09 |
| CQH7508 | - | 1 | 2026-05-20 |
| CQH7356 | Spring Airlines | 1 | 2026-04-19 |
| CQH7348 | Spring Airlines | 1 | 2026-05-11 |
Recent flights last 45
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CQH7502 | BKK → TFU | May 29, 04:30 UTC | May 29, 10:50 UTC | 6h 20m |
| 2026-05-29 | CQH7501 | TFU → BKK | May 29, 01:55 UTC | May 29, 02:45 UTC | 50m |
| 2026-05-22 | CQH6880 | BKK → TFU | May 22, 15:30 UTC | May 22, 16:25 UTC | 55m |
| 2026-05-22 | CQH6879 | TFU → BKK | May 22, 13:25 UTC | May 22, 14:20 UTC | 55m |
| 2026-05-20 | CQH7508 | - | May 20, 06:55 UTC | May 20, 07:05 UTC | 10m |
| 2026-05-15 | CQH6466 | BKK → NNG | May 15, 08:30 UTC | May 15, 09:25 UTC | 55m |
| 2026-05-15 | CQH6465 | NNG → BKK | May 15, 05:55 UTC | May 15, 07:00 UTC | 1h 5m |
| 2026-05-14 | CQH6156 | ZUH → SJW | May 14, 07:00 UTC | May 14, 07:10 UTC | 10m |
| 2026-05-11 | CQH7348 | SGN → CAN | May 11, 13:55 UTC | May 11, 14:15 UTC | 20m |
| 2026-05-11 | CQH8896 | BKK → CAN | May 11, 02:45 UTC | May 11, 03:25 UTC | 40m |
| 2026-05-10 | CQH8895 | CAN → BKK | May 10, 22:05 UTC | May 11, 00:10 UTC | 2h 5m |
| 2026-05-09 | CQH7008 | PNH → CAN | May 9, 16:00 UTC | May 9, 16:30 UTC | 30m |
| 2026-05-09 | CQH8533 | - | May 9, 05:15 UTC | May 9, 10:35 UTC | 5h 20m |
| 2026-05-08 | CQH8780 | SYX → SHA | May 8, 05:49 UTC | May 9, 05:15 UTC | 23h 25m |
| 2026-05-08 | CQH8779 | SHA → SYX | May 8, 00:20 UTC | May 8, 06:04 UTC | 5h 45m |
| 2026-05-07 | CQH8779 | SHA → SYX | May 7, 05:40 UTC | May 8, 01:40 UTC | 20h 0m |
| 2026-05-06 | CQH8521 | PVG → HKT | May 6, 12:25 UTC | May 7, 05:40 UTC | 17h 14m |
| 2026-05-05 | CQH6538 | FUK → PVG | May 5, 09:15 UTC | May 5, 09:25 UTC | 10m |
| 2026-05-04 | CQH8832 | XIY → SHE | May 4, 23:50 UTC | May 5, 03:05 UTC | 3h 15m |
| 2026-05-03 | CQH6294 | BKK → XIY | May 3, 20:05 UTC | May 3, 20:55 UTC | 50m |
| 2026-05-03 | CQH6293 | XIY → BKK | May 3, 16:30 UTC | May 3, 17:29 UTC | 1h 0m |
| 2026-05-02 | CQH6293 | XIY → BKK | May 2, 20:05 UTC | May 3, 17:29 UTC | 21h 24m |
| 2026-05-02 | CQH6293 | XIY → BKK | May 2, 17:20 UTC | May 2, 17:40 UTC | 20m |
| 2026-05-01 | CQH6294 | BKK → XIY | May 1, 20:05 UTC | May 2, 16:50 UTC | 20h 45m |
| 2026-05-01 | CQH6293 | XIY → BKK | May 1, 17:15 UTC | May 1, 17:50 UTC | 35m |
| 2026-04-25 | CQH6294 | BKK → XIY | Apr 25, 20:05 UTC | Apr 25, 20:35 UTC | 30m |
| 2026-04-25 | CQH6293 | XIY → BKK | Apr 25, 16:35 UTC | Apr 25, 17:35 UTC | 1h 0m |
| 2026-04-24 | CQH6293 | XIY → BKK | Apr 24, 20:00 UTC | Apr 25, 17:35 UTC | 21h 35m |
| 2026-04-24 | CQH6293 | XIY → BKK | Apr 24, 17:05 UTC | Apr 24, 17:40 UTC | 35m |
| 2026-04-23 | CQH7502 | BKK → TFU | Apr 23, 04:25 UTC | Apr 23, 12:40 UTC | 8h 15m |
| 2026-04-23 | CQH7501 | TFU → BKK | Apr 23, 01:40 UTC | Apr 23, 02:45 UTC | 1h 5m |
| 2026-04-20 | CQH7020 | - | Apr 20, 02:45 UTC | Apr 20, 02:55 UTC | 10m |
| 2026-04-19 | CQH8687 | - | Apr 19, 21:55 UTC | Apr 19, 22:05 UTC | 10m |
| 2026-04-19 | CQH7356 | LHW → SZX | Apr 19, 16:10 UTC | Apr 19, 16:20 UTC | 10m |
| 2026-04-18 | CQH7355 | SZX → LHW | Apr 18, 22:30 UTC | Apr 18, 22:50 UTC | 20m |
| 2026-04-17 | CQH7355 | SZX → LHW | Apr 17, 22:55 UTC | Apr 17, 23:05 UTC | 10m |
| 2026-04-17 | CQH6728 | NNY → SZX | Apr 17, 20:40 UTC | Apr 17, 21:10 UTC | 30m |
| 2026-04-17 | CQH6727 | SZX → NNY | Apr 17, 13:30 UTC | Apr 17, 13:40 UTC | 10m |
| 2026-04-17 | CQH8672 | HIA → SZX | Apr 17, 12:05 UTC | Apr 17, 12:15 UTC | 10m |
| 2026-04-15 | CQH8522 | HKT → PVG | Apr 15, 19:20 UTC | Apr 15, 19:35 UTC | 15m |
| 2026-04-15 | CQH8522 | HKT → PVG | Apr 15, 17:10 UTC | Apr 15, 17:55 UTC | 45m |
| 2026-04-15 | CQH8521 | PVG → HKT | Apr 15, 14:10 UTC | Apr 15, 14:55 UTC | 44m |
| 2026-04-15 | CQH8521 | PVG → HKT | Apr 15, 12:30 UTC | Apr 15, 12:40 UTC | 10m |
| 2026-04-14 | CQH8560 | ICN → PVG | Apr 14, 08:25 UTC | Apr 14, 08:55 UTC | 30m |
| 2026-04-14 | CQH8559 | PVG → ICN | Apr 14, 05:40 UTC | Apr 14, 06:25 UTC | 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-324G page for operator, model, and routing details .