sensors Mode-S transponder
7821F3
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32KR · AIRBUS A-320neo
- Hex
- 7821F3
- Octal
- 36020763
- Decimal
- 7,873,011
- Country
- CN
- Tail
- B-32KR
- Type
- A20N
- Flights observed
- 38
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 7821F3 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 | Spring Airlines | 4 | 2026-05-17 |
| CQH8665 | Spring Airlines | 2 | 2026-05-06 |
| CQH7419 | Spring Airlines | 2 | 2026-05-15 |
| CQH7286 | Spring Airlines | 2 | 2026-05-16 |
| CQH6988 | - | 2 | 2026-05-27 |
| CQH6987 | - | 2 | 2026-05-27 |
| CQH6596 | Spring Airlines | 2 | 2026-05-27 |
| CQH6217 | Spring Airlines | 2 | 2026-04-25 |
| CQH8838 | - | 1 | 2026-04-21 |
| CQH8755 | Spring Airlines | 1 | 2026-05-06 |
| CQH8688 | - | 1 | 2026-04-12 |
| CQH8552 | Spring Airlines | 1 | 2026-04-27 |
| CQH8551 | Spring Airlines | 1 | 2026-04-27 |
| CQH8533 | - | 1 | 2026-05-15 |
| CQH7504 | - | 1 | 2026-04-17 |
| CQH7503 | - | 1 | 2026-04-17 |
| CQH7277 | Spring Airlines | 1 | 2026-04-22 |
| CQH7008 | Spring Airlines | 1 | 2026-05-15 |
| CQH6953 | Spring Airlines | 1 | 2026-05-01 |
| CQH6732 | - | 1 | 2026-05-30 |
Recent flights last 38
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | CQH6732 | - | May 30, 11:30 UTC | May 30, 11:50 UTC | 20m |
| 2026-05-30 | CQH6731 | - | May 30, 08:55 UTC | May 30, 09:20 UTC | 25m |
| 2026-05-27 | CQH6595 | SZX → TNA | May 27, 22:40 UTC | May 27, 22:55 UTC | 15m |
| 2026-05-27 | CQH6596 | TNA → SZX | May 27, 16:45 UTC | May 27, 17:05 UTC | 20m |
| 2026-05-27 | CQH6988 | - | May 27, 07:35 UTC | May 27, 09:05 UTC | 1h 30m |
| 2026-05-27 | CQH6987 | - | May 27, 04:45 UTC | May 27, 06:09 UTC | 1h 25m |
| 2026-05-24 | CQH6596 | TNA → SZX | May 24, 15:40 UTC | May 24, 15:55 UTC | 15m |
| 2026-05-24 | CQH6988 | - | May 24, 07:30 UTC | May 24, 09:05 UTC | 1h 35m |
| 2026-05-24 | CQH6987 | - | May 24, 04:35 UTC | May 24, 06:05 UTC | 1h 30m |
| 2026-05-17 | CQH8779 | SHA → SYX | May 17, 00:15 UTC | May 17, 08:10 UTC | 7h 55m |
| 2026-05-16 | CQH8779 | SHA → SYX | May 16, 03:55 UTC | May 17, 01:35 UTC | 21h 40m |
| 2026-05-16 | CQH7286 | BKK → PVG | May 16, 01:50 UTC | May 17, 00:45 UTC | 22h 55m |
| 2026-05-15 | CQH7419 | CAN → BKK | May 15, 23:45 UTC | May 16, 00:30 UTC | 45m |
| 2026-05-15 | CQH7008 | PNH → CAN | May 15, 16:10 UTC | May 15, 16:30 UTC | 20m |
| 2026-05-15 | CQH8533 | - | May 15, 10:20 UTC | May 15, 10:35 UTC | 15m |
| 2026-05-09 | CQH8779 | SHA → SYX | May 9, 12:35 UTC | May 10, 04:55 UTC | 16h 20m |
| 2026-05-09 | CQH8779 | SHA → SYX | May 9, 03:55 UTC | May 10, 01:50 UTC | 21h 55m |
| 2026-05-09 | CQH7286 | BKK → PVG | May 9, 01:55 UTC | May 10, 00:45 UTC | 22h 50m |
| 2026-05-08 | CQH7419 | CAN → BKK | May 8, 22:25 UTC | May 9, 00:40 UTC | 2h 15m |
| 2026-05-06 | CQH8665 | PVG → HKT | May 6, 22:05 UTC | May 7, 16:10 UTC | 18h 5m |
| 2026-05-06 | CQH8665 | PVG → HKT | May 6, 20:00 UTC | May 7, 16:10 UTC | 20h 10m |
| 2026-05-06 | CQH8755 | PVG → BKK | May 6, 03:00 UTC | May 6, 18:05 UTC | 15h 4m |
| 2026-05-05 | CQH6516 | KUL → PVG | May 5, 15:50 UTC | May 5, 19:45 UTC | 3h 55m |
| 2026-05-05 | CQH6515 | PVG → KUL | May 5, 09:55 UTC | May 5, 14:30 UTC | 4h 35m |
| 2026-05-01 | CQH6953 | SJW → SHE | May 1, 14:45 UTC | May 1, 14:55 UTC | 10m |
| 2026-04-27 | CQH8552 | SIN → PVG | Apr 27, 22:30 UTC | Apr 28, 02:15 UTC | 3h 45m |
| 2026-04-27 | CQH8551 | PVG → SIN | Apr 27, 17:15 UTC | Apr 27, 20:40 UTC | 3h 25m |
| 2026-04-25 | CQH6218 | NRT → PVG | Apr 25, 11:20 UTC | Apr 25, 12:55 UTC | 1h 35m |
| 2026-04-25 | CQH6217 | PVG → NRT | Apr 25, 03:50 UTC | Apr 25, 09:35 UTC | 5h 45m |
| 2026-04-24 | CQH6217 | PVG → NRT | Apr 24, 14:35 UTC | Apr 25, 09:35 UTC | 19h 0m |
| 2026-04-24 | CQH6600 | KHN → HRB | Apr 24, 10:25 UTC | Apr 25, 08:45 UTC | 22h 20m |
| 2026-04-23 | CQH6628 | CNX → XIY | Apr 23, 14:50 UTC | Apr 24, 14:45 UTC | 23h 55m |
| 2026-04-23 | CQH6627 | XIY → CNX | Apr 23, 12:50 UTC | Apr 23, 13:15 UTC | 25m |
| 2026-04-22 | CQH7277 | SHA → SJW | Apr 22, 02:20 UTC | Apr 22, 02:40 UTC | 20m |
| 2026-04-21 | CQH8838 | - | Apr 21, 07:15 UTC | Apr 21, 07:30 UTC | 15m |
| 2026-04-17 | CQH7504 | - | Apr 17, 14:55 UTC | Apr 17, 15:15 UTC | 20m |
| 2026-04-17 | CQH7503 | - | Apr 17, 13:25 UTC | Apr 17, 13:45 UTC | 20m |
| 2026-04-12 | CQH8688 | - | Apr 12, 17:40 UTC | Apr 12, 17:55 UTC | 15m |
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-32KR page for operator, model, and routing details .