sensors Mode-S transponder
781CD5
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-327J · AIRBUS A-320neo
- Hex
- 781CD5
- Octal
- 36016325
- Decimal
- 7,871,701
- Country
- CN
- Tail
- B-327J
- Type
- A20N
- Flights observed
- 59
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 781CD5 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 |
|---|---|---|---|
| CQH8598 | - | 6 | 2026-07-16 |
| CQH8597 | - | 4 | 2026-07-16 |
| CQH7385 | Spring Airlines | 3 | 2026-05-18 |
| CQH6524 | - | 3 | 2026-07-13 |
| CQH8952 | - | 2 | 2026-06-16 |
| CQH8951 | - | 2 | 2026-06-16 |
| CQH8875 | Spring Airlines | 2 | 2026-05-01 |
| CQH8522 | Spring Airlines | 2 | 2026-05-02 |
| CQH8521 | Spring Airlines | 2 | 2026-05-02 |
| CQH6411 | - | 2 | 2026-06-21 |
| CQH8876 | Spring Airlines | 1 | 2026-05-01 |
| CQH8779 | - | 1 | 2026-07-10 |
| CQH8666 | - | 1 | 2026-07-11 |
| CQH8665 | - | 1 | 2026-07-10 |
| CQH8662 | - | 1 | 2026-06-24 |
| CQH8661 | - | 1 | 2026-06-26 |
| CQH8594 | - | 1 | 2026-07-12 |
| CQH8593 | - | 1 | 2026-07-12 |
| CQH8552 | Spring Airlines | 1 | 2026-05-21 |
| CQH8551 | Spring Airlines | 1 | 2026-05-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-16 | CQH8598 | - | Jul 16, 08:55 UTC | Jul 16, 13:10 UTC | 4h 15m |
| 2026-07-16 | CQH8597 | - | Jul 16, 03:45 UTC | Jul 16, 07:20 UTC | 3h 35m |
| 2026-07-13 | CQH6524 | - | Jul 13, 15:50 UTC | Jul 13, 16:45 UTC | 55m |
| 2026-07-13 | CQH6524 | - | Jul 13, 12:35 UTC | Jul 13, 12:55 UTC | 20m |
| 2026-07-12 | CQH8594 | - | Jul 12, 19:55 UTC | Jul 13, 11:10 UTC | 15h 15m |
| 2026-07-12 | CQH8593 | - | Jul 12, 06:05 UTC | Jul 12, 18:35 UTC | 12h 30m |
| 2026-07-11 | CQH7057 | - | Jul 11, 09:55 UTC | Jul 12, 06:30 UTC | 20h 35m |
| 2026-07-11 | CQH8666 | - | Jul 11, 07:55 UTC | Jul 12, 06:30 UTC | 22h 35m |
| 2026-07-10 | CQH8665 | - | Jul 10, 16:00 UTC | Jul 11, 10:10 UTC | 18h 10m |
| 2026-07-10 | CQH6515 | - | Jul 10, 13:40 UTC | Jul 10, 14:00 UTC | 20m |
| 2026-07-10 | CQH8779 | - | Jul 10, 00:50 UTC | Jul 10, 10:55 UTC | 10h 5m |
| 2026-07-07 | CQH7050 | - | Jul 7, 12:55 UTC | Jul 8, 05:45 UTC | 16h 50m |
| 2026-07-07 | CQH7049 | - | Jul 7, 11:05 UTC | Jul 7, 11:35 UTC | 30m |
| 2026-07-06 | CQH8598 | - | Jul 6, 11:45 UTC | Jul 7, 11:15 UTC | 23h 30m |
| 2026-07-06 | CQH8598 | - | Jul 6, 08:45 UTC | Jul 6, 13:00 UTC | 4h 15m |
| 2026-07-06 | CQH8597 | - | Jul 6, 03:35 UTC | Jul 6, 07:05 UTC | 3h 30m |
| 2026-07-03 | CQH6524 | - | Jul 3, 11:55 UTC | Jul 3, 16:15 UTC | 4h 20m |
| 2026-07-03 | CQH6523 | - | Jul 3, 05:30 UTC | Jul 3, 10:00 UTC | 4h 30m |
| 2026-06-27 | CQH6595 | - | Jun 27, 22:49 UTC | Jun 27, 23:00 UTC | 10m |
| 2026-06-26 | CQH7355 | - | Jun 26, 23:19 UTC | Jun 26, 23:30 UTC | 10m |
| 2026-06-26 | CQH6482 | - | Jun 26, 20:20 UTC | Jun 26, 20:40 UTC | 20m |
| 2026-06-26 | CQH8661 | - | Jun 26, 09:39 UTC | Jun 26, 09:59 UTC | 20m |
| 2026-06-25 | CQH6466 | - | Jun 25, 08:34 UTC | Jun 25, 10:09 UTC | 1h 35m |
| 2026-06-25 | CQH6465 | - | Jun 25, 05:15 UTC | Jun 25, 06:55 UTC | 1h 40m |
| 2026-06-24 | CQH8662 | - | Jun 24, 06:10 UTC | Jun 24, 06:29 UTC | 20m |
| 2026-06-22 | CQH6596 | TNA → SZX | Jun 22, 17:00 UTC | Jun 22, 17:10 UTC | 10m |
| 2026-06-21 | CQH6411 | - | Jun 21, 09:49 UTC | Jun 21, 10:09 UTC | 20m |
| 2026-06-18 | CQH7058 | UBN → PVG | Jun 18, 13:00 UTC | Jun 19, 07:04 UTC | 18h 4m |
| 2026-06-18 | CQH8598 | - | Jun 18, 09:45 UTC | Jun 19, 07:04 UTC | 21h 19m |
| 2026-06-18 | CQH8597 | - | Jun 18, 03:55 UTC | Jun 18, 07:15 UTC | 3h 20m |
| 2026-06-16 | CQH8952 | - | Jun 16, 03:39 UTC | Jun 16, 04:10 UTC | 30m |
| 2026-06-16 | CQH8951 | - | Jun 16, 01:55 UTC | Jun 16, 02:24 UTC | 30m |
| 2026-06-11 | CQH6294 | BKK → XIY | Jun 11, 20:00 UTC | Jun 11, 20:55 UTC | 55m |
| 2026-06-11 | CQH6293 | - | Jun 11, 17:05 UTC | Jun 11, 17:30 UTC | 25m |
| 2026-05-27 | CQH7596 | ZUH → YTY | May 27, 06:29 UTC | May 27, 06:40 UTC | 10m |
| 2026-05-21 | CQH8552 | SIN → PVG | May 21, 22:40 UTC | May 22, 01:40 UTC | 3h 0m |
| 2026-05-21 | CQH8551 | PVG → SIN | May 21, 17:25 UTC | May 21, 20:30 UTC | 3h 5m |
| 2026-05-21 | CQH6538 | FUK → PVG | May 21, 09:00 UTC | May 21, 09:10 UTC | 10m |
| 2026-05-18 | CQH7385 | NGB → SYX | May 18, 05:50 UTC | May 18, 14:25 UTC | 8h 35m |
| 2026-05-15 | CQH7385 | NGB → SYX | May 15, 11:10 UTC | May 15, 15:00 UTC | 3h 49m |
| 2026-05-12 | CQH7385 | NGB → SYX | May 12, 10:20 UTC | May 12, 13:51 UTC | 3h 30m |
| 2026-05-10 | CQH8952 | TPE → PVG | May 10, 04:15 UTC | May 10, 11:55 UTC | 7h 40m |
| 2026-05-10 | CQH8951 | PVG → TPE | May 10, 02:20 UTC | May 10, 02:55 UTC | 35m |
| 2026-05-09 | CQH6732 | - | May 9, 11:40 UTC | May 9, 12:00 UTC | 20m |
| 2026-05-09 | CQH6731 | - | May 9, 09:15 UTC | May 9, 09:45 UTC | 30m |
| 2026-05-08 | CQH6411 | CGO → CGQ | May 8, 09:59 UTC | May 9, 09:15 UTC | 23h 15m |
| 2026-05-02 | CQH8522 | HKT → PVG | May 2, 17:20 UTC | May 3, 11:35 UTC | 18h 14m |
| 2026-05-02 | CQH8522 | HKT → PVG | May 2, 14:15 UTC | May 3, 11:35 UTC | 21h 19m |
| 2026-05-02 | CQH8521 | PVG → HKT | May 2, 12:30 UTC | May 3, 10:50 UTC | 22h 19m |
| 2026-05-02 | CQH8521 | PVG → HKT | May 2, 06:05 UTC | May 3, 03:10 UTC | 21h 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-327J page for operator, model, and routing details .