sensors Mode-S transponder
781FFA
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-224D · BOEING 737 MAX 8
- Hex
- 781FFA
- Octal
- 36017772
- Decimal
- 7,872,506
- Country
- CN
- Tail
- B-224D
- Type
- B38M
- Flights observed
- 63
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 781FFA 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 |
|---|---|---|---|
| CSH866 | Shanghai Airlines | 8 | 2026-05-06 |
| CSH865 | Shanghai Airlines | 8 | 2026-04-24 |
| CSH863 | Shanghai Airlines | 6 | 2026-05-05 |
| CSH864 | Shanghai Airlines | 4 | 2026-05-05 |
| CSH861 | Shanghai Airlines | 4 | 2026-05-25 |
| CSH853 | Shanghai Airlines | 4 | 2026-05-26 |
| CSH858 | Shanghai Airlines | 3 | 2026-04-26 |
| CSH856 | Shanghai Airlines | 3 | 2026-05-17 |
| CSH811 | Shanghai Airlines | 3 | 2026-05-25 |
| CSH878 | Shanghai Airlines | 2 | 2026-04-18 |
| CSH862 | Shanghai Airlines | 2 | 2026-05-08 |
| CSH857 | Shanghai Airlines | 2 | 2026-04-25 |
| CSH855 | Shanghai Airlines | 2 | 2026-05-17 |
| CSH854 | Shanghai Airlines | 2 | 2026-05-08 |
| CSH842 | Shanghai Airlines | 2 | 2026-05-29 |
| CSH841 | Shanghai Airlines | 2 | 2026-05-28 |
| CSH9256 | Shanghai Airlines | 1 | 2026-05-10 |
| CSH9255 | Shanghai Airlines | 1 | 2026-05-10 |
| CSH877 | Shanghai Airlines | 1 | 2026-05-02 |
| CSH840 | Shanghai Airlines | 1 | 2026-05-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CSH842 | BKK → PVG | May 29, 02:55 UTC | May 29, 05:30 UTC | 2h 35m |
| 2026-05-28 | CSH841 | CGQ → PVG | May 28, 10:55 UTC | May 28, 18:05 UTC | 7h 10m |
| 2026-05-27 | CSH842 | BKK → PVG | May 27, 03:09 UTC | May 27, 05:24 UTC | 2h 15m |
| 2026-05-26 | CSH853 | PVG → BKK | May 26, 07:05 UTC | May 26, 16:00 UTC | 8h 55m |
| 2026-05-25 | CSH811 | PVG → HKG | May 25, 18:00 UTC | May 26, 05:30 UTC | 11h 30m |
| 2026-05-25 | CSH861 | PVG → KUL | May 25, 05:10 UTC | May 25, 16:10 UTC | 11h 0m |
| 2026-05-24 | CSH853 | PVG → BKK | May 24, 13:25 UTC | May 24, 15:30 UTC | 2h 5m |
| 2026-05-24 | CSH812 | HKG → PVG | May 24, 06:35 UTC | May 24, 06:50 UTC | 15m |
| 2026-05-24 | CSH811 | PVG → HKG | May 24, 03:40 UTC | May 24, 05:00 UTC | 1h 20m |
| 2026-05-17 | CSH856 | BKK → PVG | May 17, 12:35 UTC | May 17, 14:50 UTC | 2h 15m |
| 2026-05-17 | CSH855 | PVG → BKK | May 17, 08:35 UTC | May 17, 11:05 UTC | 2h 30m |
| 2026-05-11 | CSH840 | BKK → PVG | May 11, 15:10 UTC | May 11, 17:25 UTC | 2h 15m |
| 2026-05-11 | CSH839 | PVG → BKK | May 11, 05:00 UTC | May 11, 13:50 UTC | 8h 50m |
| 2026-05-10 | CSH9256 | HAK → PVG | May 10, 07:25 UTC | May 11, 05:00 UTC | 21h 35m |
| 2026-05-10 | CSH9255 | PVG → HAK | May 10, 03:25 UTC | May 10, 08:20 UTC | 4h 55m |
| 2026-05-08 | CSH862 | KUL → PVG | May 8, 18:25 UTC | May 8, 22:35 UTC | 4h 10m |
| 2026-05-08 | CSH861 | PVG → KUL | May 8, 16:05 UTC | May 8, 16:20 UTC | 15m |
| 2026-05-08 | CSH854 | BKK → PVG | May 8, 05:05 UTC | May 8, 12:49 UTC | 7h 45m |
| 2026-05-07 | CSH853 | PVG → BKK | May 7, 07:55 UTC | May 7, 15:45 UTC | 7h 50m |
| 2026-05-06 | CSH866 | KUL → PVG | May 6, 12:45 UTC | May 7, 03:40 UTC | 14h 54m |
| 2026-05-05 | CSH864 | KUL → PVG | May 5, 23:15 UTC | May 6, 11:25 UTC | 12h 10m |
| 2026-05-05 | CSH863 | PVG → KUL | May 5, 03:25 UTC | May 5, 21:30 UTC | 18h 5m |
| 2026-05-04 | CSH853 | PVG → BKK | May 4, 06:15 UTC | May 4, 14:55 UTC | 8h 40m |
| 2026-05-04 | CSH811 | PVG → HKG | May 4, 02:45 UTC | May 4, 04:20 UTC | 1h 35m |
| 2026-05-03 | CSH862 | KUL → PVG | May 3, 18:09 UTC | May 3, 18:25 UTC | 15m |
| 2026-05-03 | CSH861 | PVG → KUL | May 3, 03:35 UTC | May 3, 16:34 UTC | 13h 0m |
| 2026-05-02 | CSH861 | PVG → KUL | May 2, 19:45 UTC | May 3, 16:34 UTC | 20h 49m |
| 2026-05-02 | CSH877 | PVG → PEN | May 2, 07:10 UTC | May 3, 04:30 UTC | 21h 19m |
| 2026-05-02 | CSH854 | BKK → PVG | May 2, 05:10 UTC | May 3, 04:30 UTC | 23h 19m |
| 2026-05-01 | CSH841 | CGQ → PVG | May 1, 10:55 UTC | May 1, 18:50 UTC | 7h 55m |
| 2026-04-26 | CSH858 | HKT → PVG | Apr 26, 16:35 UTC | Apr 27, 11:00 UTC | 18h 25m |
| 2026-04-26 | CSH858 | HKT → PVG | Apr 26, 13:25 UTC | Apr 27, 11:00 UTC | 21h 35m |
| 2026-04-26 | CSH858 | HKT → PVG | Apr 26, 11:40 UTC | Apr 26, 19:05 UTC | 7h 25m |
| 2026-04-25 | CSH857 | PVG → HKT | Apr 25, 17:00 UTC | Apr 26, 13:55 UTC | 20h 55m |
| 2026-04-25 | CSH857 | PVG → HKT | Apr 25, 14:35 UTC | Apr 26, 13:55 UTC | 23h 20m |
| 2026-04-25 | CSH866 | KUL → PVG | Apr 25, 13:10 UTC | Apr 26, 11:50 UTC | 22h 40m |
| 2026-04-24 | CSH865 | PVG → KUL | Apr 24, 23:20 UTC | Apr 25, 11:40 UTC | 12h 20m |
| 2026-04-24 | CSH863 | PVG → KUL | Apr 24, 17:15 UTC | Apr 24, 21:50 UTC | 4h 35m |
| 2026-04-18 | CSH878 | PEN → PVG | Apr 18, 19:45 UTC | Apr 19, 02:00 UTC | 6h 15m |
| 2026-04-18 | CSH878 | PEN → PVG | Apr 18, 04:45 UTC | Apr 19, 02:00 UTC | 21h 15m |
| 2026-04-17 | CSH856 | - | Apr 17, 14:50 UTC | Apr 17, 15:00 UTC | 9m |
| 2026-04-17 | CSH856 | - | Apr 17, 12:50 UTC | Apr 17, 13:00 UTC | 10m |
| 2026-04-17 | CSH855 | PVG → BKK | Apr 17, 10:55 UTC | Apr 17, 11:15 UTC | 20m |
| 2026-04-16 | CSH866 | - | Apr 16, 15:45 UTC | Apr 16, 16:40 UTC | 55m |
| 2026-04-16 | CSH866 | - | Apr 16, 13:54 UTC | Apr 16, 14:10 UTC | 15m |
| 2026-04-16 | CSH866 | - | Apr 16, 12:39 UTC | Apr 16, 13:05 UTC | 25m |
| 2026-04-16 | CSH865 | PVG → KUL | Apr 16, 09:45 UTC | Apr 16, 11:04 UTC | 1h 20m |
| 2026-04-16 | CSH865 | PVG → KUL | Apr 16, 07:09 UTC | Apr 16, 08:00 UTC | 50m |
| 2026-04-16 | CSH865 | PVG → KUL | Apr 16, 06:49 UTC | Apr 16, 07:05 UTC | 15m |
| 2026-04-16 | CSH864 | KUL → PVG | Apr 16, 02:24 UTC | Apr 16, 02:34 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-224D page for operator, model, and routing details .