sensors Mode-S transponder
7807B2
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6821 · AIRBUS A-320
- Hex
- 7807B2
- Octal
- 36003662
- Decimal
- 7,866,290
- Country
- CN
- Tail
- B-6821
- Type
- A320
- Flights observed
- 78
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 7807B2 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 |
|---|---|---|---|
| CQH8516 | Spring Airlines | 4 | 2026-05-20 |
| CQH6825 | - | 4 | 2026-06-16 |
| CQH8515 | Spring Airlines | 3 | 2026-05-20 |
| CQH7588 | - | 3 | 2026-07-11 |
| CQH7587 | - | 3 | 2026-07-10 |
| CQH7385 | Spring Airlines | 3 | 2026-05-09 |
| CQH6826 | - | 3 | 2026-06-16 |
| CQH6809 | - | 3 | 2026-07-17 |
| CQH8934 | Spring Airlines | 2 | 2026-05-29 |
| CQH8609 | Spring Airlines | 2 | 2026-05-04 |
| CQH7502 | - | 2 | 2026-07-08 |
| CQH6728 | Spring Airlines | 2 | 2026-05-22 |
| CQH6182 | - | 2 | 2026-06-28 |
| CQH6181 | - | 2 | 2026-06-28 |
| CQH8892 | Spring Airlines | 1 | 2026-05-14 |
| CQH8891 | Spring Airlines | 1 | 2026-05-10 |
| CQH8882 | - | 1 | 2026-06-30 |
| CQH8881 | - | 1 | 2026-06-30 |
| CQH8854 | - | 1 | 2026-05-12 |
| CQH8790 | Spring Airlines | 1 | 2026-06-02 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CQH6809 | - | Jul 17, 23:45 UTC | Jul 18, 00:04 UTC | 20m |
| 2026-07-13 | CQH6809 | - | Jul 13, 23:55 UTC | Jul 14, 00:20 UTC | 25m |
| 2026-07-11 | CQH7588 | - | Jul 11, 03:05 UTC | Jul 11, 03:45 UTC | 40m |
| 2026-07-10 | CQH7587 | - | Jul 10, 15:10 UTC | Jul 11, 00:55 UTC | 9h 45m |
| 2026-07-10 | CQH6887 | - | Jul 10, 11:55 UTC | Jul 10, 12:15 UTC | 20m |
| 2026-07-09 | CQH7588 | - | Jul 9, 03:05 UTC | Jul 9, 03:40 UTC | 35m |
| 2026-07-08 | CQH7587 | - | Jul 8, 10:20 UTC | Jul 9, 00:55 UTC | 14h 35m |
| 2026-07-08 | CQH7502 | - | Jul 8, 04:35 UTC | Jul 9, 00:55 UTC | 20h 20m |
| 2026-07-08 | CQH7502 | - | Jul 8, 04:20 UTC | Jul 9, 00:55 UTC | 20h 35m |
| 2026-07-07 | CQH7501 | - | Jul 7, 07:10 UTC | Jul 8, 02:25 UTC | 19h 15m |
| 2026-07-06 | CQH7588 | CJU → SHE | Jul 6, 02:55 UTC | Jul 6, 03:35 UTC | 40m |
| 2026-07-06 | CQH7587 | SHE → CJU | Jul 6, 00:45 UTC | Jul 6, 01:00 UTC | 15m |
| 2026-07-05 | CQH6341 | SHE → HFE | Jul 5, 03:55 UTC | Jul 5, 04:05 UTC | 10m |
| 2026-07-02 | CQH6814 | - | Jul 2, 23:40 UTC | Jul 3, 16:30 UTC | 16h 50m |
| 2026-06-30 | CQH8882 | - | Jun 30, 06:40 UTC | Jun 30, 06:50 UTC | 10m |
| 2026-06-30 | CQH8881 | - | Jun 30, 04:25 UTC | Jun 30, 05:00 UTC | 35m |
| 2026-06-28 | CQH6182 | - | Jun 28, 12:50 UTC | Jun 28, 13:29 UTC | 40m |
| 2026-06-28 | CQH6181 | - | Jun 28, 11:19 UTC | Jun 28, 11:45 UTC | 25m |
| 2026-06-24 | CQH6182 | - | Jun 24, 12:09 UTC | Jun 24, 12:30 UTC | 20m |
| 2026-06-24 | CQH6181 | - | Jun 24, 10:10 UTC | Jun 24, 10:39 UTC | 30m |
| 2026-06-22 | CQH6809 | - | Jun 22, 05:49 UTC | Jun 23, 00:15 UTC | 18h 25m |
| 2026-06-17 | CQH7603 | - | Jun 17, 04:10 UTC | Jun 17, 04:25 UTC | 15m |
| 2026-06-16 | CQH6826 | - | Jun 16, 10:49 UTC | Jun 16, 13:09 UTC | 2h 20m |
| 2026-06-16 | CQH6825 | - | Jun 16, 06:35 UTC | Jun 16, 09:20 UTC | 2h 45m |
| 2026-06-12 | CQH6538 | FUK → PVG | Jun 12, 09:10 UTC | Jun 12, 09:30 UTC | 20m |
| 2026-06-12 | CQH6537 | PVG → FUK | Jun 12, 07:00 UTC | Jun 12, 07:20 UTC | 20m |
| 2026-06-11 | CQH7282 | BKK → PVG | Jun 11, 10:05 UTC | Jun 11, 13:00 UTC | 2h 55m |
| 2026-06-11 | CQH7281 | PVG → BKK | Jun 11, 06:10 UTC | Jun 11, 08:35 UTC | 2h 25m |
| 2026-06-05 | CQH7206 | CJU → PKX | Jun 5, 11:00 UTC | Jun 5, 14:10 UTC | 3h 10m |
| 2026-06-05 | CQH7518 | LHW → PKX | Jun 5, 07:40 UTC | Jun 5, 07:55 UTC | 15m |
| 2026-06-02 | CQH8790 | ICN → SJW | Jun 2, 10:55 UTC | Jun 2, 11:15 UTC | 20m |
| 2026-06-02 | CQH8789 | SJW → ICN | Jun 2, 09:10 UTC | Jun 2, 09:30 UTC | 20m |
| 2026-05-29 | CQH8934 | CNX → CAN | May 29, 14:35 UTC | May 29, 16:05 UTC | 1h 30m |
| 2026-05-29 | CQH7286 | BKK → PVG | May 29, 01:50 UTC | May 29, 13:15 UTC | 11h 25m |
| 2026-05-28 | CQH7419 | CAN → BKK | May 28, 22:40 UTC | May 29, 00:35 UTC | 1h 55m |
| 2026-05-28 | CQH8934 | CNX → CAN | May 28, 14:50 UTC | May 28, 16:10 UTC | 1h 20m |
| 2026-05-28 | CQH8511 | PVG → CNX | May 28, 06:30 UTC | May 28, 13:30 UTC | 7h 0m |
| 2026-05-28 | CQH8716 | HKG → PVG | May 28, 05:35 UTC | May 28, 05:50 UTC | 15m |
| 2026-05-28 | CQH8715 | PVG → HKG | May 28, 02:20 UTC | May 28, 03:40 UTC | 1h 20m |
| 2026-05-25 | CQH6600 | KHN → HRB | May 25, 10:25 UTC | May 25, 14:50 UTC | 4h 25m |
| 2026-05-23 | CQH6873 | SZX → NGB | May 23, 06:25 UTC | May 23, 06:35 UTC | 10m |
| 2026-05-22 | CQH8753 | SZX → XIY | May 22, 22:25 UTC | May 22, 22:40 UTC | 15m |
| 2026-05-22 | CQH6728 | NNY → SZX | May 22, 18:00 UTC | May 22, 18:25 UTC | 25m |
| 2026-05-21 | CQH7558 | SGN → PVG | May 21, 08:30 UTC | May 21, 14:50 UTC | 6h 20m |
| 2026-05-20 | CQH8516 | HND → PVG | May 20, 16:35 UTC | May 21, 14:50 UTC | 22h 15m |
| 2026-05-20 | CQH8516 | HND → PVG | May 20, 16:15 UTC | May 21, 14:00 UTC | 21h 45m |
| 2026-05-20 | CQH8515 | PVG → HND | May 20, 12:20 UTC | May 20, 13:50 UTC | 1h 30m |
| 2026-05-18 | CQH8671 | HIA → HRB | May 18, 22:30 UTC | May 18, 22:40 UTC | 10m |
| 2026-05-18 | CQH6728 | NNY → SZX | May 18, 16:45 UTC | May 18, 17:00 UTC | 15m |
| 2026-05-18 | CQH6727 | SZX → NNY | May 18, 12:05 UTC | May 18, 12:15 UTC | 10m |
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-6821 page for operator, model, and routing details .