sensors Mode-S transponder
78197D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-30FS · AIRBUS A-321neo
- Hex
- 78197D
- Octal
- 36014575
- Decimal
- 7,870,845
- Country
- CN
- Tail
- B-30FS
- Type
- A21N
- Flights observed
- 99
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 78197D 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3993 | Sichuan Airlines | 40 | 2026-06-03 |
| CSC3994 | Sichuan Airlines | 30 | 2026-06-02 |
| CSC3122 | Sichuan Airlines | 7 | 2026-04-26 |
| CSC3995 | Sichuan Airlines | 5 | 2026-05-10 |
| CSC3121 | Sichuan Airlines | 5 | 2026-04-26 |
| CSC3996 | Sichuan Airlines | 3 | 2026-05-10 |
| CSC6788 | Sichuan Airlines | 2 | 2026-05-23 |
| CSC3708 | Sichuan Airlines | 2 | 2026-05-31 |
| CSC3707 | Sichuan Airlines | 2 | 2026-05-31 |
| CSC8764 | Sichuan Airlines | 1 | 2026-04-30 |
| CSC3910 | Sichuan Airlines | 1 | 2026-05-03 |
| CSC3909 | Sichuan Airlines | 1 | 2026-05-03 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-03 | CSC3993 | TFU → KUL | Jun 3, 14:20 UTC | Jun 3, 14:45 UTC | 25m |
| 2026-06-02 | CSC3994 | KUL → TFU | Jun 2, 16:30 UTC | Jun 3, 13:30 UTC | 21h 0m |
| 2026-06-02 | CSC3993 | TFU → KUL | Jun 2, 14:15 UTC | Jun 2, 14:35 UTC | 20m |
| 2026-06-02 | CSC3993 | TFU → KUL | Jun 2, 12:15 UTC | Jun 2, 13:20 UTC | 1h 5m |
| 2026-06-01 | CSC3994 | KUL → TFU | Jun 1, 17:50 UTC | Jun 2, 13:20 UTC | 19h 30m |
| 2026-06-01 | CSC3994 | KUL → TFU | Jun 1, 16:35 UTC | Jun 2, 13:20 UTC | 20h 45m |
| 2026-06-01 | CSC3993 | TFU → KUL | Jun 1, 14:25 UTC | Jun 1, 14:40 UTC | 15m |
| 2026-06-01 | CSC3993 | TFU → KUL | Jun 1, 12:15 UTC | Jun 1, 13:30 UTC | 1h 15m |
| 2026-05-31 | CSC3708 | ICN → DYG | May 31, 12:10 UTC | May 31, 12:30 UTC | 20m |
| 2026-05-31 | CSC3707 | DYG → ICN | May 31, 10:35 UTC | May 31, 10:55 UTC | 20m |
| 2026-05-30 | CSC3708 | ICN → DYG | May 30, 12:25 UTC | May 30, 12:45 UTC | 20m |
| 2026-05-30 | CSC3707 | DYG → ICN | May 30, 10:30 UTC | May 30, 10:45 UTC | 15m |
| 2026-05-28 | CSC3994 | KUL → TFU | May 28, 17:45 UTC | May 28, 18:50 UTC | 1h 5m |
| 2026-05-28 | CSC3994 | KUL → TFU | May 28, 16:30 UTC | May 28, 16:45 UTC | 15m |
| 2026-05-28 | CSC3993 | TFU → KUL | May 28, 14:20 UTC | May 28, 14:40 UTC | 20m |
| 2026-05-27 | CSC3994 | KUL → TFU | May 27, 17:35 UTC | May 28, 13:10 UTC | 19h 35m |
| 2026-05-27 | CSC3994 | KUL → TFU | May 27, 16:20 UTC | May 28, 13:10 UTC | 20h 50m |
| 2026-05-27 | CSC3993 | TFU → KUL | May 27, 14:25 UTC | May 27, 14:45 UTC | 20m |
| 2026-05-27 | CSC3993 | TFU → KUL | May 27, 12:20 UTC | May 27, 13:25 UTC | 1h 5m |
| 2026-05-26 | CSC3994 | KUL → TFU | May 26, 17:30 UTC | May 27, 13:25 UTC | 19h 55m |
| 2026-05-26 | CSC3994 | KUL → TFU | May 26, 16:30 UTC | May 26, 16:45 UTC | 15m |
| 2026-05-26 | CSC3993 | TFU → KUL | May 26, 14:35 UTC | May 26, 14:55 UTC | 20m |
| 2026-05-26 | CSC3993 | TFU → KUL | May 26, 12:20 UTC | May 26, 13:34 UTC | 1h 15m |
| 2026-05-24 | CSC3994 | KUL → TFU | May 24, 17:40 UTC | May 24, 18:50 UTC | 1h 10m |
| 2026-05-24 | CSC3994 | KUL → TFU | May 24, 16:30 UTC | May 24, 16:45 UTC | 15m |
| 2026-05-24 | CSC3993 | TFU → KUL | May 24, 12:15 UTC | May 24, 14:35 UTC | 2h 20m |
| 2026-05-23 | CSC3993 | TFU → KUL | May 23, 17:35 UTC | May 24, 14:35 UTC | 21h 0m |
| 2026-05-23 | CSC3994 | KUL → TFU | May 23, 16:25 UTC | May 24, 14:35 UTC | 22h 10m |
| 2026-05-23 | CSC3993 | TFU → KUL | May 23, 14:25 UTC | May 23, 14:50 UTC | 25m |
| 2026-05-23 | CSC3993 | TFU → KUL | May 23, 12:20 UTC | May 23, 13:30 UTC | 1h 10m |
| 2026-05-23 | CSC6788 | ZUH → TFU | May 23, 04:30 UTC | May 23, 04:50 UTC | 20m |
| 2026-05-22 | CSC3994 | KUL → TFU | May 22, 17:25 UTC | May 22, 18:35 UTC | 1h 10m |
| 2026-05-22 | CSC3994 | KUL → TFU | May 22, 16:15 UTC | May 22, 16:30 UTC | 15m |
| 2026-05-22 | CSC3993 | TFU → KUL | May 22, 14:20 UTC | May 22, 14:35 UTC | 15m |
| 2026-05-22 | CSC3993 | TFU → KUL | May 22, 12:15 UTC | May 22, 13:20 UTC | 1h 5m |
| 2026-05-21 | CSC3993 | TFU → KUL | May 21, 17:35 UTC | May 22, 13:20 UTC | 19h 45m |
| 2026-05-21 | CSC3994 | KUL → TFU | May 21, 16:25 UTC | May 22, 13:20 UTC | 20h 55m |
| 2026-05-21 | CSC3993 | TFU → KUL | May 21, 14:20 UTC | May 21, 14:40 UTC | 20m |
| 2026-05-21 | CSC3993 | TFU → KUL | May 21, 12:10 UTC | May 21, 13:25 UTC | 1h 15m |
| 2026-05-20 | CSC3994 | KUL → TFU | May 20, 17:30 UTC | May 21, 13:25 UTC | 19h 55m |
| 2026-05-20 | CSC3994 | KUL → TFU | May 20, 16:25 UTC | May 20, 16:35 UTC | 10m |
| 2026-05-20 | CSC3993 | TFU → KUL | May 20, 14:25 UTC | May 20, 14:40 UTC | 15m |
| 2026-05-20 | CSC3993 | TFU → KUL | May 20, 12:15 UTC | May 20, 13:25 UTC | 1h 10m |
| 2026-05-17 | CSC3994 | KUL → TFU | May 17, 17:50 UTC | May 17, 18:25 UTC | 35m |
| 2026-05-17 | CSC3994 | KUL → TFU | May 17, 16:35 UTC | May 17, 16:50 UTC | 15m |
| 2026-05-17 | CSC3993 | TFU → KUL | May 17, 13:01 UTC | May 17, 14:50 UTC | 1h 50m |
| 2026-05-16 | CSC3993 | TFU → KUL | May 16, 17:45 UTC | May 17, 14:50 UTC | 21h 5m |
| 2026-05-16 | CSC3994 | KUL → TFU | May 16, 16:35 UTC | May 17, 14:50 UTC | 22h 15m |
| 2026-05-16 | CSC3993 | TFU → KUL | May 16, 14:31 UTC | May 16, 14:41 UTC | 10m |
| 2026-05-16 | CSC3993 | TFU → KUL | May 16, 12:21 UTC | May 16, 13:31 UTC | 1h 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-30FS page for operator, model, and routing details .