sensors Mode-S transponder
782424
ICAO 24-bit transponder address · allocated to China
- Hex
- 782424
- Octal
- 36022044
- Decimal
- 7,873,572
- Country
- CN
- Flights observed
- 19
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- 18d ago
Last known position
Country allocation
The ICAO 24-bit address 782424 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CQH7135 | - | 2 | 2026-07-12 |
| CQH7133 | Spring Airlines | 2 | 2026-07-05 |
| CQH9912 | - | 1 | 2026-05-29 |
| CQH8808 | - | 1 | 2026-07-24 |
| CQH8803 | - | 1 | 2026-07-19 |
| CQH8781 | - | 1 | 2026-07-18 |
| CQH8688 | - | 1 | 2026-07-18 |
| CQH8662 | Spring Airlines | 1 | 2026-07-23 |
| CQH7654 | - | 1 | 2026-07-19 |
| CQH7653 | Spring Airlines | 1 | 2026-07-22 |
| CQH7636 | - | 1 | 2026-06-28 |
| CQH7519 | - | 1 | 2026-07-15 |
| CQH7508 | - | 1 | 2026-07-17 |
| CQH7360 | - | 1 | 2026-07-08 |
| CQH6732 | - | 1 | 2026-07-11 |
| CQH6731 | - | 1 | 2026-07-11 |
| CQH6156 | Spring Airlines | 1 | 2026-06-04 |
Recent flights last 19
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | CQH8808 | - | Jul 24, 22:40 UTC | Jul 24, 23:10 UTC | 30m |
| 2026-07-23 | CQH8662 | CGQ → SJW | Jul 23, 06:10 UTC | Jul 23, 06:20 UTC | 10m |
| 2026-07-22 | CQH7653 | TFU → HKT | Jul 22, 12:25 UTC | Jul 22, 18:00 UTC | 5h 35m |
| 2026-07-19 | CQH8803 | - | Jul 19, 14:35 UTC | Jul 19, 14:50 UTC | 15m |
| 2026-07-19 | CQH7654 | - | Jul 19, 00:00 UTC | Jul 19, 05:05 UTC | 5h 5m |
| 2026-07-18 | CQH8781 | - | Jul 18, 22:05 UTC | Jul 18, 22:15 UTC | 10m |
| 2026-07-18 | CQH8688 | - | Jul 18, 17:45 UTC | Jul 18, 18:05 UTC | 20m |
| 2026-07-17 | CQH7508 | - | Jul 17, 07:35 UTC | Jul 17, 15:05 UTC | 7h 30m |
| 2026-07-15 | CQH7519 | - | Jul 15, 03:50 UTC | Jul 15, 04:00 UTC | 10m |
| 2026-07-12 | CQH7135 | - | Jul 12, 04:01 UTC | Jul 12, 04:25 UTC | 25m |
| 2026-07-11 | CQH6732 | - | Jul 11, 12:00 UTC | Jul 11, 23:50 UTC | 11h 50m |
| 2026-07-11 | CQH6731 | - | Jul 11, 06:15 UTC | Jul 11, 09:35 UTC | 3h 20m |
| 2026-07-08 | CQH7360 | - | Jul 8, 00:25 UTC | Jul 8, 04:30 UTC | 4h 5m |
| 2026-07-05 | CQH7133 | LHW → TSN | Jul 5, 10:35 UTC | Jul 5, 10:50 UTC | 15m |
| 2026-06-28 | CQH7636 | - | Jun 28, 12:15 UTC | Jun 29, 03:10 UTC | 14h 55m |
| 2026-06-10 | CQH7135 | LHW → TSN | Jun 10, 04:20 UTC | Jun 10, 04:45 UTC | 25m |
| 2026-06-07 | CQH7133 | LHW → TSN | Jun 7, 10:00 UTC | Jun 7, 10:20 UTC | 20m |
| 2026-06-04 | CQH6156 | ZUH → SJW | Jun 4, 05:30 UTC | Jun 4, 05:40 UTC | 10m |
| 2026-05-29 | CQH9912 | - | May 29, 16:10 UTC | May 30, 05:35 UTC | 13h 25m |
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.