sensors Mode-S transponder
781084
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8645 · AIRBUS A-320
- Hex
- 781084
- Octal
- 36010204
- Decimal
- 7,868,548
- Country
- CN
- Tail
- B-8645
- Type
- A320
- Flights observed
- 107
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 2h ago
Current position
Country allocation
The ICAO 24-bit address 781084 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 |
|---|---|---|---|
| CQH6826 | - | 6 | 2026-07-09 |
| CQH6825 | - | 6 | 2026-07-09 |
| CQH7420 | Spring Airlines | 5 | 2026-06-08 |
| CQH7285 | - | 5 | 2026-06-08 |
| CQH8715 | Spring Airlines | 4 | 2026-05-16 |
| CQH8895 | Spring Airlines | 3 | 2026-05-14 |
| CQH8951 | Spring Airlines | 2 | 2026-05-17 |
| CQH8933 | Spring Airlines | 2 | 2026-05-08 |
| CQH8896 | Spring Airlines | 2 | 2026-05-15 |
| CQH8878 | Spring Airlines | 2 | 2026-05-17 |
| CQH8877 | Spring Airlines | 2 | 2026-05-17 |
| CQH8716 | Spring Airlines | 2 | 2026-05-16 |
| CQH7609 | - | 2 | 2026-05-05 |
| CQH7432 | Spring Airlines | 2 | 2026-05-03 |
| CQH7431 | Spring Airlines | 2 | 2026-05-03 |
| CQH7348 | - | 2 | 2026-06-17 |
| CQH7347 | - | 2 | 2026-06-17 |
| CQH7282 | - | 2 | 2026-04-14 |
| CQH7281 | Spring Airlines | 2 | 2026-04-14 |
| CQH6540 | - | 2 | 2026-06-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | CQH6465 | - | Jul 14, 06:30 UTC | Jul 14, 06:55 UTC | 25m |
| 2026-07-14 | CQH6465 | - | Jul 14, 05:15 UTC | Jul 14, 05:30 UTC | 15m |
| 2026-07-11 | CQH7416 | - | Jul 11, 10:30 UTC | Jul 11, 10:45 UTC | 15m |
| 2026-07-09 | CQH6826 | - | Jul 9, 10:40 UTC | Jul 9, 13:00 UTC | 2h 20m |
| 2026-07-09 | CQH6825 | - | Jul 9, 00:50 UTC | Jul 9, 09:20 UTC | 8h 30m |
| 2026-07-08 | CQH8762 | - | Jul 8, 08:20 UTC | Jul 8, 08:35 UTC | 15m |
| 2026-07-08 | CQH8761 | - | Jul 8, 04:15 UTC | Jul 8, 04:30 UTC | 15m |
| 2026-07-06 | CQH6472 | - | Jul 6, 16:10 UTC | Jul 6, 16:20 UTC | 10m |
| 2026-07-06 | CQH8727 | - | Jul 6, 09:25 UTC | Jul 6, 09:45 UTC | 20m |
| 2026-07-06 | CQH6471 | - | Jul 6, 00:55 UTC | Jul 6, 05:20 UTC | 4h 25m |
| 2026-07-03 | CQH7502 | - | Jul 3, 04:20 UTC | Jul 3, 11:35 UTC | 7h 15m |
| 2026-07-03 | CQH7501 | - | Jul 3, 01:50 UTC | Jul 3, 02:20 UTC | 30m |
| 2026-06-28 | CQH7508 | - | Jun 28, 16:35 UTC | Jun 29, 07:05 UTC | 14h 30m |
| 2026-06-28 | CQH6887 | - | Jun 28, 12:25 UTC | Jun 28, 12:55 UTC | 30m |
| 2026-06-26 | CQH6628 | - | Jun 26, 14:39 UTC | Jun 27, 11:04 UTC | 20h 25m |
| 2026-06-26 | CQH6627 | - | Jun 26, 12:34 UTC | Jun 26, 12:50 UTC | 15m |
| 2026-06-26 | CQH6836 | - | Jun 26, 03:15 UTC | Jun 26, 03:29 UTC | 15m |
| 2026-06-22 | CQH6540 | - | Jun 22, 18:04 UTC | Jun 22, 18:19 UTC | 15m |
| 2026-06-22 | CQH6540 | - | Jun 22, 09:10 UTC | Jun 22, 12:40 UTC | 3h 30m |
| 2026-06-22 | CQH6539 | - | Jun 22, 04:59 UTC | Jun 22, 05:15 UTC | 15m |
| 2026-06-21 | CQH8613 | - | Jun 21, 22:44 UTC | Jun 21, 23:00 UTC | 15m |
| 2026-06-21 | CQH6482 | - | Jun 21, 16:44 UTC | Jun 21, 16:54 UTC | 10m |
| 2026-06-21 | CQH8661 | - | Jun 21, 09:29 UTC | Jun 21, 09:40 UTC | 10m |
| 2026-06-21 | CQH6156 | - | Jun 21, 05:15 UTC | Jun 21, 05:30 UTC | 15m |
| 2026-06-20 | CQH6472 | - | Jun 20, 14:19 UTC | Jun 20, 14:29 UTC | 10m |
| 2026-06-20 | CQH6471 | - | Jun 20, 00:49 UTC | Jun 20, 04:09 UTC | 3h 20m |
| 2026-06-17 | CQH7348 | - | Jun 17, 17:15 UTC | Jun 17, 17:30 UTC | 15m |
| 2026-06-17 | CQH7347 | - | Jun 17, 12:05 UTC | Jun 17, 12:15 UTC | 10m |
| 2026-06-15 | CQH7520 | - | Jun 15, 08:10 UTC | Jun 15, 08:25 UTC | 15m |
| 2026-06-14 | CQH8753 | - | Jun 14, 22:50 UTC | Jun 14, 23:05 UTC | 15m |
| 2026-06-14 | CQH6156 | - | Jun 14, 06:50 UTC | Jun 14, 07:00 UTC | 10m |
| 2026-06-11 | CQH6421 | SJW → SYX | Jun 11, 01:35 UTC | Jun 11, 04:15 UTC | 2h 40m |
| 2026-06-08 | CQH7420 | BKK → CAN | Jun 8, 15:10 UTC | Jun 8, 15:40 UTC | 30m |
| 2026-06-08 | CQH7285 | - | Jun 8, 11:25 UTC | Jun 8, 13:05 UTC | 1h 40m |
| 2026-06-06 | CQH8632 | ZUH → NGB | Jun 6, 13:54 UTC | Jun 7, 04:10 UTC | 14h 15m |
| 2026-06-06 | CQH8631 | NGB → ZUH | Jun 6, 11:30 UTC | Jun 6, 12:04 UTC | 35m |
| 2026-06-06 | CQH7512 | NGB → CAN | Jun 6, 01:50 UTC | Jun 6, 02:05 UTC | 15m |
| 2026-06-04 | CQH7420 | BKK → CAN | Jun 4, 14:40 UTC | Jun 4, 16:15 UTC | 1h 35m |
| 2026-06-04 | CQH7285 | - | Jun 4, 11:00 UTC | Jun 4, 13:10 UTC | 2h 10m |
| 2026-05-24 | CQH6826 | - | May 24, 10:45 UTC | May 24, 13:00 UTC | 2h 15m |
| 2026-05-24 | CQH6825 | - | May 24, 06:35 UTC | May 24, 08:55 UTC | 2h 20m |
| 2026-05-20 | CQH6826 | - | May 20, 10:40 UTC | May 20, 13:00 UTC | 2h 20m |
| 2026-05-20 | CQH6825 | - | May 20, 07:05 UTC | May 20, 09:25 UTC | 2h 20m |
| 2026-05-17 | CQH8756 | BKK → PVG | May 17, 19:50 UTC | May 17, 22:01 UTC | 2h 10m |
| 2026-05-17 | CQH8878 | KHH → PVG | May 17, 10:25 UTC | May 17, 17:55 UTC | 7h 30m |
| 2026-05-17 | CQH8877 | PVG → KHH | May 17, 08:05 UTC | May 17, 09:00 UTC | 55m |
| 2026-05-17 | CQH8952 | TPE → PVG | May 17, 03:20 UTC | May 17, 04:10 UTC | 50m |
| 2026-05-17 | CQH8951 | PVG → TPE | May 17, 01:30 UTC | May 17, 02:00 UTC | 30m |
| 2026-05-16 | CQH8951 | PVG → TPE | May 16, 06:45 UTC | May 17, 02:00 UTC | 19h 15m |
| 2026-05-16 | CQH8716 | HKG → PVG | May 16, 05:46 UTC | May 16, 05:56 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-8645 page for operator, model, and routing details .