sensors Mode-S transponder
781857
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-30D6 · AIRBUS A-320neo
- Hex
- 781857
- Octal
- 36014127
- Decimal
- 7,870,551
- Country
- CN
- Tail
- B-30D6
- Type
- A20N
- Flights observed
- 73
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 781857 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 |
|---|---|---|---|
| CQH6523 | Spring Airlines | 5 | 2026-05-16 |
| CQH6921 | Spring Airlines | 4 | 2026-04-30 |
| CQH6922 | Spring Airlines | 3 | 2026-04-30 |
| CQH6524 | Spring Airlines | 3 | 2026-05-16 |
| CQH8876 | Spring Airlines | 2 | 2026-05-02 |
| CQH8875 | Spring Airlines | 2 | 2026-05-01 |
| CQH8715 | Spring Airlines | 2 | 2026-05-09 |
| CQH7558 | Spring Airlines | 2 | 2026-04-21 |
| CQH7200 | - | 2 | 2026-06-16 |
| CQH7199 | - | 2 | 2026-06-16 |
| CQH7050 | Spring Airlines | 2 | 2026-06-21 |
| CQH6610 | Spring Airlines | 2 | 2026-05-15 |
| CQH6595 | - | 2 | 2026-07-03 |
| CQH6313 | Spring Airlines | 2 | 2026-04-20 |
| CQH6217 | - | 2 | 2026-06-28 |
| CQH8952 | - | 1 | 2026-06-26 |
| CQH8951 | - | 1 | 2026-06-26 |
| CQH8894 | Spring Airlines | 1 | 2026-04-30 |
| CQH8893 | Spring Airlines | 1 | 2026-04-30 |
| CQH8753 | Spring Airlines | 1 | 2026-05-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-10 | CQH7611 | - | Jul 10, 02:30 UTC | Jul 10, 03:00 UTC | 30m |
| 2026-07-09 | CQH6730 | - | Jul 9, 02:00 UTC | Jul 9, 02:20 UTC | 20m |
| 2026-07-08 | CQH6729 | - | Jul 8, 17:50 UTC | Jul 9, 00:05 UTC | 6h 15m |
| 2026-07-07 | - | - | Jul 7, 05:05 UTC | Jul 7, 05:35 UTC | 30m |
| 2026-07-03 | CQH6595 | - | Jul 3, 22:40 UTC | Jul 3, 22:55 UTC | 15m |
| 2026-07-02 | CQH7679 | - | Jul 2, 22:35 UTC | Jul 2, 22:50 UTC | 15m |
| 2026-07-02 | CQH6786 | - | Jul 2, 16:35 UTC | Jul 2, 16:55 UTC | 20m |
| 2026-07-02 | CQH6785 | - | Jul 2, 02:10 UTC | Jul 2, 02:25 UTC | 15m |
| 2026-06-29 | CQH6218 | - | Jun 29, 11:10 UTC | Jun 29, 13:00 UTC | 1h 50m |
| 2026-06-28 | CQH6217 | - | Jun 28, 16:14 UTC | Jun 29, 09:44 UTC | 17h 30m |
| 2026-06-28 | CQH6217 | - | Jun 28, 12:25 UTC | Jun 29, 09:44 UTC | 21h 20m |
| 2026-06-26 | CQH8952 | - | Jun 26, 03:39 UTC | Jun 26, 12:50 UTC | 9h 10m |
| 2026-06-26 | CQH8951 | - | Jun 26, 02:00 UTC | Jun 26, 02:24 UTC | 25m |
| 2026-06-21 | CQH6732 | - | Jun 21, 23:59 UTC | Jun 22, 13:35 UTC | 13h 35m |
| 2026-06-21 | CQH6760 | - | Jun 21, 10:25 UTC | Jun 22, 07:45 UTC | 21h 20m |
| 2026-06-21 | CQH7050 | CJJ → PVG | Jun 21, 03:49 UTC | Jun 21, 23:59 UTC | 20h 10m |
| 2026-06-21 | CQH7050 | CJJ → PVG | Jun 21, 03:34 UTC | Jun 21, 10:49 UTC | 7h 15m |
| 2026-06-21 | CQH7049 | PVG → CJJ | Jun 21, 01:45 UTC | Jun 21, 02:20 UTC | 35m |
| 2026-06-19 | CQH7286 | - | Jun 19, 02:14 UTC | Jun 19, 04:34 UTC | 2h 20m |
| 2026-06-18 | CQH7419 | - | Jun 18, 23:00 UTC | Jun 19, 00:59 UTC | 1h 59m |
| 2026-06-16 | CQH7200 | - | Jun 16, 20:05 UTC | Jun 16, 20:30 UTC | 25m |
| 2026-06-16 | CQH7200 | - | Jun 16, 15:50 UTC | Jun 16, 17:19 UTC | 1h 30m |
| 2026-06-16 | CQH7199 | - | Jun 16, 13:44 UTC | Jun 16, 14:00 UTC | 15m |
| 2026-06-16 | CQH7199 | - | Jun 16, 09:45 UTC | Jun 16, 09:55 UTC | 10m |
| 2026-06-07 | CQH6595 | SZX → TNA | Jun 7, 22:50 UTC | Jun 7, 23:00 UTC | 10m |
| 2026-06-07 | CQH7555 | SHA → SZX | Jun 7, 17:50 UTC | Jun 7, 18:10 UTC | 20m |
| 2026-05-28 | CQH6294 | BKK → XIY | May 28, 20:00 UTC | May 28, 20:55 UTC | 55m |
| 2026-05-28 | CQH6293 | XIY → BKK | May 28, 16:20 UTC | May 28, 17:20 UTC | 1h 0m |
| 2026-05-26 | CQH8731 | SHE → NGB | May 26, 14:55 UTC | May 27, 06:20 UTC | 15h 25m |
| 2026-05-20 | CQH6182 | ICN → YTY | May 20, 12:00 UTC | May 20, 12:30 UTC | 30m |
| 2026-05-20 | CQH6181 | YTY → ICN | May 20, 09:30 UTC | May 20, 10:05 UTC | 35m |
| 2026-05-17 | CQH8753 | SZX → XIY | May 17, 22:40 UTC | May 17, 22:50 UTC | 10m |
| 2026-05-17 | CQH6728 | NNY → SZX | May 17, 17:55 UTC | May 17, 18:15 UTC | 20m |
| 2026-05-16 | CQH6524 | KUL → PVG | May 16, 10:35 UTC | May 17, 00:55 UTC | 14h 20m |
| 2026-05-16 | CQH6523 | PVG → KUL | May 16, 08:41 UTC | May 16, 09:01 UTC | 20m |
| 2026-05-16 | CQH6523 | PVG → KUL | May 16, 04:35 UTC | May 16, 05:56 UTC | 1h 21m |
| 2026-05-15 | CQH6610 | FUK → PVG | May 15, 03:00 UTC | May 15, 03:10 UTC | 10m |
| 2026-05-14 | CQH8550 | SIN → PVG | May 14, 13:40 UTC | May 14, 17:45 UTC | 4h 5m |
| 2026-05-14 | CQH8549 | PVG → SIN | May 14, 09:05 UTC | May 14, 12:10 UTC | 3h 5m |
| 2026-05-11 | CQH7752 | NBS → PVG | May 11, 14:15 UTC | May 11, 14:45 UTC | 30m |
| 2026-05-09 | CQH8716 | HKG → PVG | May 9, 05:40 UTC | May 9, 06:45 UTC | 1h 5m |
| 2026-05-09 | CQH8715 | PVG → HKG | May 9, 03:35 UTC | May 9, 03:55 UTC | 20m |
| 2026-05-09 | CQH8715 | PVG → HKG | May 9, 02:30 UTC | May 9, 02:55 UTC | 25m |
| 2026-05-07 | CQH6524 | KUL → PVG | May 7, 13:55 UTC | May 7, 14:55 UTC | 1h 0m |
| 2026-05-07 | CQH6524 | KUL → PVG | May 7, 10:45 UTC | May 7, 11:00 UTC | 15m |
| 2026-05-07 | CQH6523 | PVG → KUL | May 7, 08:55 UTC | May 7, 09:15 UTC | 20m |
| 2026-05-06 | CQH8666 | HKT → PVG | May 6, 10:20 UTC | May 7, 05:35 UTC | 19h 14m |
| 2026-05-02 | CQH8665 | PVG → HKT | May 2, 04:35 UTC | May 2, 16:20 UTC | 11h 45m |
| 2026-05-02 | CQH8876 | MFM → PVG | May 2, 03:35 UTC | May 2, 03:55 UTC | 20m |
| 2026-05-01 | CQH8875 | PVG → MFM | May 1, 18:10 UTC | May 2, 02:15 UTC | 8h 5m |
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-30D6 page for operator, model, and routing details .