sensors Mode-S transponder
78156A
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-303U · AIRBUS A-320neo
- Hex
- 78156A
- Octal
- 36012552
- Decimal
- 7,869,802
- Country
- CN
- Tail
- B-303U
- Type
- A20N
- Flights observed
- 48
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 9h ago
Last known position
Country allocation
The ICAO 24-bit address 78156A 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 |
|---|---|---|---|
| CQH8550 | Spring Airlines | 2 | 2026-04-14 |
| CQH8549 | - | 2 | 2026-04-14 |
| CQH8516 | Spring Airlines | 2 | 2026-05-04 |
| CQH7259 | Spring Airlines | 2 | 2026-05-05 |
| CQH6727 | Spring Airlines | 2 | 2026-05-19 |
| CQH8896 | Spring Airlines | 1 | 2026-05-17 |
| CQH8895 | Spring Airlines | 1 | 2026-05-16 |
| CQH8875 | Spring Airlines | 1 | 2026-05-28 |
| CQH8779 | Spring Airlines | 1 | 2026-04-27 |
| CQH8708 | Spring Airlines | 1 | 2026-04-29 |
| CQH8707 | Spring Airlines | 1 | 2026-04-29 |
| CQH8687 | - | 1 | 2026-05-08 |
| CQH8672 | Spring Airlines | 1 | 2026-05-19 |
| CQH8662 | Spring Airlines | 1 | 2026-05-20 |
| CQH8552 | Spring Airlines | 1 | 2026-04-30 |
| CQH8551 | Spring Airlines | 1 | 2026-04-30 |
| CQH8522 | Spring Airlines | 1 | 2026-05-29 |
| CQH8515 | Spring Airlines | 1 | 2026-05-04 |
| CQH7684 | - | 1 | 2026-05-12 |
| CQH7596 | Spring Airlines | 1 | 2026-04-16 |
Recent flights last 48
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CQH8522 | HKT → PVG | May 29, 03:40 UTC | May 29, 19:40 UTC | 16h 0m |
| 2026-05-28 | CQH8875 | PVG → MFM | May 28, 08:35 UTC | May 29, 02:15 UTC | 17h 40m |
| 2026-05-24 | CQH6838 | ZUH → LHW | May 24, 03:40 UTC | May 24, 03:50 UTC | 10m |
| 2026-05-20 | CQH8662 | CGQ → SJW | May 20, 06:00 UTC | May 20, 06:20 UTC | 20m |
| 2026-05-19 | CQH6481 | SZX → DOY | May 19, 22:25 UTC | May 19, 22:35 UTC | 10m |
| 2026-05-19 | CQH6727 | SZX → NNY | May 19, 14:30 UTC | May 19, 14:45 UTC | 15m |
| 2026-05-19 | CQH8672 | HIA → SZX | May 19, 12:20 UTC | May 19, 12:35 UTC | 15m |
| 2026-05-18 | CQH7286 | BKK → PVG | May 18, 01:50 UTC | May 18, 04:05 UTC | 2h 15m |
| 2026-05-18 | CQH7419 | CAN → BKK | May 18, 00:00 UTC | May 18, 00:35 UTC | 35m |
| 2026-05-17 | CQH7348 | SGN → CAN | May 17, 14:50 UTC | May 17, 15:05 UTC | 15m |
| 2026-05-17 | CQH8896 | BKK → CAN | May 17, 02:40 UTC | May 17, 03:05 UTC | 25m |
| 2026-05-16 | CQH8895 | CAN → BKK | May 16, 23:30 UTC | May 17, 00:00 UTC | 30m |
| 2026-05-15 | CQH6156 | ZUH → SJW | May 15, 07:50 UTC | May 15, 08:05 UTC | 15m |
| 2026-05-13 | CQH7520 | SZX → SHA | May 13, 05:30 UTC | May 13, 05:40 UTC | 10m |
| 2026-05-12 | CQH7684 | - | May 12, 23:05 UTC | May 12, 23:25 UTC | 20m |
| 2026-05-09 | CQH7020 | - | May 9, 02:45 UTC | May 9, 02:55 UTC | 10m |
| 2026-05-08 | CQH8687 | - | May 8, 22:05 UTC | May 8, 22:15 UTC | 10m |
| 2026-05-08 | CQH6786 | WUH → SZX | May 8, 13:35 UTC | May 8, 13:50 UTC | 15m |
| 2026-05-08 | CQH6785 | WUH → WUA | May 8, 02:04 UTC | May 8, 02:19 UTC | 15m |
| 2026-05-07 | - | - | May 7, 17:45 UTC | May 7, 17:55 UTC | 10m |
| 2026-05-07 | CQH6727 | SZX → NNY | May 7, 12:45 UTC | May 7, 12:55 UTC | 10m |
| 2026-05-06 | CQH6524 | KUL → PVG | May 6, 10:40 UTC | May 6, 14:45 UTC | 4h 5m |
| 2026-05-06 | CQH6523 | PVG → KUL | May 6, 00:10 UTC | May 6, 09:15 UTC | 9h 5m |
| 2026-05-05 | CQH6636 | KUL → PVG | May 5, 21:05 UTC | May 5, 21:20 UTC | 15m |
| 2026-05-05 | CQH6635 | PVG → KUL | May 5, 19:10 UTC | May 5, 19:25 UTC | 15m |
| 2026-05-05 | CQH7259 | PVG → PEN | May 5, 01:55 UTC | May 5, 16:15 UTC | 14h 20m |
| 2026-05-04 | CQH8516 | HND → PVG | May 4, 16:35 UTC | May 5, 16:15 UTC | 23h 41m |
| 2026-05-04 | CQH8516 | HND → PVG | May 4, 16:10 UTC | May 5, 11:40 UTC | 19h 31m |
| 2026-05-04 | CQH8515 | PVG → HND | May 4, 12:25 UTC | May 4, 13:30 UTC | 1h 5m |
| 2026-05-02 | CQH7135 | LHW → TSN | May 2, 23:50 UTC | May 3, 05:20 UTC | 5h 29m |
| 2026-05-02 | CQH6730 | - | May 2, 03:50 UTC | May 2, 04:15 UTC | 25m |
| 2026-05-02 | CQH6729 | - | May 2, 01:10 UTC | May 2, 01:35 UTC | 25m |
| 2026-04-30 | CQH8552 | SIN → PVG | Apr 30, 22:35 UTC | May 1, 01:35 UTC | 3h 0m |
| 2026-04-30 | CQH8551 | PVG → SIN | Apr 30, 17:15 UTC | Apr 30, 20:45 UTC | 3h 30m |
| 2026-04-29 | CQH8708 | CJU → SHE | Apr 29, 02:50 UTC | Apr 29, 06:59 UTC | 4h 10m |
| 2026-04-29 | CQH8707 | SHE → CJU | Apr 29, 00:40 UTC | Apr 29, 00:59 UTC | 20m |
| 2026-04-27 | CQH8779 | SHA → SYX | Apr 27, 00:35 UTC | Apr 27, 06:40 UTC | 6h 5m |
| 2026-04-25 | CQH6650 | BKK → YTY | Apr 25, 20:15 UTC | Apr 25, 20:40 UTC | 25m |
| 2026-04-25 | CQH6649 | YTY → BKK | Apr 25, 17:20 UTC | Apr 25, 17:50 UTC | 30m |
| 2026-04-24 | CQH6809 | SHE → KWL | Apr 24, 23:45 UTC | Apr 25, 00:05 UTC | 20m |
| 2026-04-16 | CQH7252 | - | Apr 16, 12:34 UTC | Apr 16, 12:49 UTC | 15m |
| 2026-04-16 | CQH7596 | ZUH → YTY | Apr 16, 06:25 UTC | Apr 16, 06:40 UTC | 15m |
| 2026-04-16 | CQH7595 | YTY → ZUH | Apr 16, 04:49 UTC | Apr 16, 05:05 UTC | 15m |
| 2026-04-14 | CQH8550 | SIN → PVG | Apr 14, 17:50 UTC | Apr 14, 18:45 UTC | 55m |
| 2026-04-14 | CQH8550 | SIN → PVG | Apr 14, 15:00 UTC | Apr 14, 15:15 UTC | 15m |
| 2026-04-14 | CQH8549 | PVG → SIN | Apr 14, 12:55 UTC | Apr 14, 13:30 UTC | 35m |
| 2026-04-14 | CQH8549 | - | Apr 14, 10:10 UTC | Apr 14, 10:20 UTC | 10m |
| 2026-04-13 | CQH7259 | PVG → PEN | Apr 13, 01:55 UTC | Apr 13, 03:10 UTC | 1h 15m |
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-303U page for operator, model, and routing details .