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
- 72
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 26, 11:20 UTC
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 |
| CQH8715 | Spring Airlines | 3 | 2026-07-25 |
| CQH6732 | - | 3 | 2026-06-11 |
| CQH6731 | - | 3 | 2026-06-11 |
| CQH6218 | Spring Airlines | 3 | 2026-07-23 |
| CQH6217 | Spring Airlines | 3 | 2026-07-23 |
| CQH8952 | Spring Airlines | 2 | 2026-06-12 |
| CQH8951 | Spring Airlines | 2 | 2026-06-12 |
| CQH8933 | Spring Airlines | 2 | 2026-07-25 |
| CQH8688 | - | 2 | 2026-07-21 |
| CQH8665 | Spring Airlines | 2 | 2026-05-06 |
| CQH7461 | - | 2 | 2026-07-17 |
| CQH7419 | Spring Airlines | 2 | 2026-05-15 |
| CQH7286 | Spring Airlines | 2 | 2026-05-16 |
| CQH6988 | - | 2 | 2026-05-27 |
| CQH6987 | - | 2 | 2026-05-27 |
| CQH6600 | - | 2 | 2026-06-21 |
| CQH6596 | Spring Airlines | 2 | 2026-05-27 |
| CQH6411 | - | 2 | 2026-06-28 |
| CQH9931 | - | 1 | 2026-07-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CQH8878 | KHH → PVG | Jul 26, 10:15 UTC | Jul 26, 11:20 UTC | 1h 5m |
| 2026-07-26 | CQH8877 | PVG → KHH | Jul 26, 01:45 UTC | Jul 26, 09:05 UTC | 7h 21m |
| 2026-07-25 | CQH8933 | CAN → CNX | Jul 25, 14:55 UTC | Jul 26, 00:30 UTC | 9h 35m |
| 2026-07-25 | CQH8716 | HKG → PVG | Jul 25, 05:50 UTC | Jul 25, 13:40 UTC | 7h 50m |
| 2026-07-25 | CQH8715 | PVG → HKG | Jul 25, 02:30 UTC | Jul 25, 03:55 UTC | 1h 25m |
| 2026-07-24 | CQH8715 | PVG → HKG | Jul 24, 06:50 UTC | Jul 25, 03:55 UTC | 21h 5m |
| 2026-07-24 | CQH8715 | PVG → HKG | Jul 24, 06:30 UTC | Jul 25, 03:55 UTC | 21h 25m |
| 2026-07-23 | CQH6218 | NRT → PVG | Jul 23, 12:50 UTC | Jul 24, 06:55 UTC | 18h 5m |
| 2026-07-23 | CQH6218 | NRT → PVG | Jul 23, 11:55 UTC | Jul 24, 06:55 UTC | 19h 0m |
| 2026-07-23 | CQH6217 | PVG → NRT | Jul 23, 02:00 UTC | Jul 23, 10:30 UTC | 8h 30m |
| 2026-07-22 | CQH8933 | CAN → CNX | Jul 22, 22:35 UTC | Jul 23, 00:45 UTC | 2h 10m |
| 2026-07-22 | CQH7420 | BKK → CAN | Jul 22, 17:20 UTC | Jul 22, 18:40 UTC | 1h 20m |
| 2026-07-22 | CQH9931 | - | Jul 22, 03:25 UTC | Jul 22, 15:55 UTC | 12h 30m |
| 2026-07-21 | CQH8671 | HIA → HRB | Jul 21, 23:10 UTC | Jul 21, 23:20 UTC | 10m |
| 2026-07-21 | CQH8688 | - | Jul 21, 17:45 UTC | Jul 21, 18:00 UTC | 15m |
| 2026-07-21 | CQH7019 | - | Jul 21, 12:25 UTC | Jul 21, 12:40 UTC | 15m |
| 2026-07-17 | CQH7461 | - | Jul 17, 11:00 UTC | Jul 17, 13:55 UTC | 2h 55m |
| 2026-07-08 | CQH7461 | - | Jul 8, 11:45 UTC | Jul 8, 14:35 UTC | 2h 50m |
| 2026-07-07 | CQH6730 | - | Jul 7, 02:15 UTC | Jul 7, 02:40 UTC | 25m |
| 2026-07-06 | CQH6729 | - | Jul 6, 13:15 UTC | Jul 6, 23:55 UTC | 10h 40m |
| 2026-07-06 | CQH6116 | - | Jul 6, 08:15 UTC | Jul 6, 08:25 UTC | 10m |
| 2026-06-29 | - | - | Jun 29, 15:00 UTC | Jun 29, 15:04 UTC | 5m |
| 2026-06-28 | CQH6411 | - | Jun 28, 09:55 UTC | Jun 28, 10:15 UTC | 20m |
| 2026-06-21 | CQH6600 | - | Jun 21, 10:14 UTC | Jun 21, 14:30 UTC | 4h 15m |
| 2026-06-14 | CQH6313 | - | Jun 14, 12:55 UTC | Jun 15, 04:04 UTC | 15h 9m |
| 2026-06-12 | CQH8952 | TPE → PVG | Jun 12, 03:20 UTC | Jun 12, 03:45 UTC | 25m |
| 2026-06-12 | CQH8951 | PVG → TPE | Jun 12, 01:30 UTC | Jun 12, 02:05 UTC | 35m |
| 2026-06-11 | CQH6732 | - | Jun 11, 11:50 UTC | Jun 11, 12:10 UTC | 20m |
| 2026-06-11 | CQH6731 | - | Jun 11, 09:05 UTC | Jun 11, 09:30 UTC | 25m |
| 2026-06-09 | CQH8952 | TPE → PVG | Jun 9, 03:40 UTC | Jun 9, 04:05 UTC | 25m |
| 2026-06-09 | CQH8951 | PVG → TPE | Jun 9, 01:25 UTC | Jun 9, 02:00 UTC | 35m |
| 2026-06-04 | CQH6732 | - | Jun 4, 11:35 UTC | Jun 4, 11:55 UTC | 20m |
| 2026-06-04 | CQH6731 | - | Jun 4, 09:25 UTC | Jun 4, 10:00 UTC | 35m |
| 2026-06-03 | CQH6411 | CGO → CGQ | Jun 3, 09:55 UTC | Jun 3, 10:05 UTC | 10m |
| 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 |
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 .