sensors Mode-S transponder
781FFB
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-224E · BOEING 737 MAX 8
- Hex
- 781FFB
- Octal
- 36017773
- Decimal
- 7,872,507
- Country
- CN
- Tail
- B-224E
- Type
- B38M
- Flights observed
- 68
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address 781FFB 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 |
|---|---|---|---|
| CSH853 | Shanghai Airlines | 6 | 2026-05-25 |
| CSH865 | Shanghai Airlines | 5 | 2026-05-09 |
| CSH878 | Shanghai Airlines | 4 | 2026-05-07 |
| CSH863 | Shanghai Airlines | 4 | 2026-05-09 |
| CSH858 | Shanghai Airlines | 4 | 2026-05-11 |
| CSH857 | Shanghai Airlines | 4 | 2026-05-11 |
| CSH856 | Shanghai Airlines | 4 | 2026-05-01 |
| CSH855 | Shanghai Airlines | 4 | 2026-04-30 |
| CSH866 | Shanghai Airlines | 3 | 2026-05-10 |
| CSH842 | Shanghai Airlines | 3 | 2026-05-16 |
| CSH811 | Shanghai Airlines | 3 | 2026-05-25 |
| CSH9539 | Shanghai Airlines | 2 | 2026-05-18 |
| CSH9255 | Shanghai Airlines | 2 | 2026-05-20 |
| CSH877 | Shanghai Airlines | 2 | 2026-04-15 |
| CSH868 | Shanghai Airlines | 2 | 2026-05-26 |
| CSH862 | Shanghai Airlines | 2 | 2026-05-24 |
| CSH861 | Shanghai Airlines | 2 | 2026-05-24 |
| CSH841 | Shanghai Airlines | 2 | 2026-05-03 |
| CSH812 | Shanghai Airlines | 2 | 2026-05-22 |
| CSH9540 | Shanghai Airlines | 1 | 2026-05-12 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CSH834 | BKK → PVG | May 29, 10:15 UTC | May 30, 04:55 UTC | 18h 40m |
| 2026-05-28 | CSH833 | PVG → BKK | May 28, 22:05 UTC | May 29, 08:40 UTC | 10h 35m |
| 2026-05-28 | CSH847 | PVG → BKK | May 28, 18:00 UTC | May 28, 20:15 UTC | 2h 15m |
| 2026-05-26 | CSH868 | BKI → PVG | May 26, 19:25 UTC | May 27, 09:10 UTC | 13h 45m |
| 2026-05-26 | CSH868 | BKI → PVG | May 26, 17:39 UTC | May 26, 17:59 UTC | 20m |
| 2026-05-26 | CSH867 | PVG → BKI | May 26, 05:00 UTC | May 26, 16:30 UTC | 11h 30m |
| 2026-05-25 | CSH853 | PVG → BKK | May 25, 06:05 UTC | May 25, 14:55 UTC | 8h 50m |
| 2026-05-25 | CSH811 | PVG → HKG | May 25, 03:45 UTC | May 25, 04:05 UTC | 20m |
| 2026-05-24 | CSH862 | KUL → PVG | May 24, 19:05 UTC | May 25, 03:10 UTC | 8h 5m |
| 2026-05-24 | CSH861 | PVG → KUL | May 24, 13:20 UTC | May 24, 17:40 UTC | 4h 20m |
| 2026-05-22 | CSH812 | HKG → PVG | May 22, 06:10 UTC | May 22, 07:20 UTC | 1h 10m |
| 2026-05-22 | CSH811 | PVG → HKG | May 22, 04:05 UTC | May 22, 04:20 UTC | 15m |
| 2026-05-21 | CSH862 | KUL → PVG | May 21, 18:15 UTC | May 22, 03:25 UTC | 9h 10m |
| 2026-05-21 | CSH861 | PVG → KUL | May 21, 03:25 UTC | May 21, 16:10 UTC | 12h 45m |
| 2026-05-20 | CSH9255 | PVG → HAK | May 20, 10:55 UTC | May 21, 07:00 UTC | 20h 5m |
| 2026-05-20 | CSH9255 | PVG → HAK | May 20, 10:20 UTC | May 21, 07:00 UTC | 20h 40m |
| 2026-05-18 | CSH9539 | PVG → SYX | May 18, 03:10 UTC | May 18, 08:25 UTC | 5h 15m |
| 2026-05-16 | CSH842 | BKK → PVG | May 16, 03:05 UTC | May 16, 05:25 UTC | 2h 20m |
| 2026-05-14 | CSH853 | PVG → BKK | May 14, 21:55 UTC | May 15, 15:10 UTC | 17h 14m |
| 2026-05-14 | CSH853 | PVG → BKK | May 14, 18:50 UTC | May 15, 15:10 UTC | 20h 19m |
| 2026-05-14 | CSH853 | PVG → BKK | May 14, 18:40 UTC | May 15, 15:10 UTC | 20h 29m |
| 2026-05-14 | CSH854 | BKK → PVG | May 14, 05:20 UTC | May 14, 16:15 UTC | 10h 55m |
| 2026-05-13 | CSH853 | PVG → BKK | May 13, 07:25 UTC | May 13, 14:25 UTC | 7h 0m |
| 2026-05-13 | CSH812 | HKG → PVG | May 13, 06:15 UTC | May 13, 06:35 UTC | 20m |
| 2026-05-13 | CSH811 | PVG → HKG | May 13, 04:00 UTC | May 13, 04:15 UTC | 15m |
| 2026-05-12 | CSH9540 | SYX → PVG | May 12, 07:50 UTC | May 13, 02:50 UTC | 19h 0m |
| 2026-05-11 | CSH858 | HKT → PVG | May 11, 13:15 UTC | May 12, 08:00 UTC | 18h 46m |
| 2026-05-11 | CSH857 | PVG → HKT | May 11, 11:30 UTC | May 12, 08:00 UTC | 20h 30m |
| 2026-05-10 | CSH857 | PVG → HKT | May 10, 16:59 UTC | May 11, 16:45 UTC | 23h 45m |
| 2026-05-10 | CSH857 | PVG → HKT | May 10, 15:55 UTC | May 11, 14:10 UTC | 22h 15m |
| 2026-05-10 | CSH866 | KUL → PVG | May 10, 12:49 UTC | May 11, 11:45 UTC | 22h 55m |
| 2026-05-09 | CSH865 | PVG → KUL | May 9, 23:30 UTC | May 10, 11:25 UTC | 11h 55m |
| 2026-05-09 | CSH863 | PVG → KUL | May 9, 21:30 UTC | May 9, 21:55 UTC | 25m |
| 2026-05-09 | CSH863 | PVG → KUL | May 9, 17:20 UTC | May 9, 18:40 UTC | 1h 20m |
| 2026-05-07 | CSH878 | PEN → PVG | May 7, 19:30 UTC | May 8, 04:34 UTC | 9h 5m |
| 2026-05-04 | CSH842 | BKK → PVG | May 4, 03:00 UTC | May 4, 05:10 UTC | 2h 10m |
| 2026-05-03 | CSH841 | CGQ → PVG | May 3, 10:50 UTC | May 3, 18:55 UTC | 8h 5m |
| 2026-05-02 | CSH841 | CGQ → PVG | May 2, 19:05 UTC | May 3, 18:45 UTC | 23h 39m |
| 2026-05-02 | CSH858 | HKT → PVG | May 2, 16:50 UTC | May 3, 16:40 UTC | 23h 49m |
| 2026-05-02 | CSH858 | HKT → PVG | May 2, 13:20 UTC | May 3, 10:50 UTC | 21h 29m |
| 2026-05-02 | CSH857 | PVG → HKT | May 2, 11:25 UTC | May 2, 19:15 UTC | 7h 50m |
| 2026-05-01 | CSH856 | BKK → PVG | May 1, 12:50 UTC | May 2, 11:40 UTC | 22h 50m |
| 2026-05-01 | CSH856 | BKK → PVG | May 1, 12:30 UTC | May 1, 14:45 UTC | 2h 15m |
| 2026-04-30 | CSH855 | PVG → BKK | Apr 30, 16:55 UTC | May 1, 11:05 UTC | 18h 10m |
| 2026-04-30 | CSH855 | PVG → BKK | Apr 30, 13:40 UTC | May 1, 11:05 UTC | 21h 25m |
| 2026-04-30 | CSH865 | PVG → KUL | Apr 30, 07:25 UTC | Apr 30, 12:20 UTC | 4h 55m |
| 2026-04-29 | CSH864 | KUL → PVG | Apr 29, 23:15 UTC | Apr 29, 23:25 UTC | 10m |
| 2026-04-29 | CSH863 | PVG → KUL | Apr 29, 17:10 UTC | Apr 29, 21:40 UTC | 4h 30m |
| 2026-04-26 | CSH9539 | PVG → SYX | Apr 26, 16:10 UTC | Apr 27, 09:10 UTC | 17h 0m |
| 2026-04-26 | CSH866 | KUL → PVG | Apr 26, 13:00 UTC | Apr 27, 09:10 UTC | 20h 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-224E page for operator, model, and routing details .