sensors Mode-S transponder
781A98
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-321E · AIRBUS A-320neo
- Hex
- 781A98
- Octal
- 36015230
- Decimal
- 7,871,128
- Country
- CN
- Tail
- B-321E
- Type
- A20N
- Flights observed
- 29
- Distinct callsigns
- 14
- Country
- CN
- Last broadcast
- 14d ago
Last known position
Country allocation
The ICAO 24-bit address 781A98 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSC3773 | Sichuan Airlines | 4 | 2026-05-15 |
| CSC8786 | Sichuan Airlines | 3 | 2026-05-19 |
| CSC3784 | Sichuan Airlines | 3 | 2026-05-10 |
| CSC3783 | Sichuan Airlines | 3 | 2026-05-10 |
| CSC3771 | Sichuan Airlines | 3 | 2026-05-17 |
| CSC8005 | - | 2 | 2026-05-14 |
| CSC8003 | - | 2 | 2026-05-10 |
| CSC3774 | Sichuan Airlines | 2 | 2026-05-15 |
| CSC3772 | Sichuan Airlines | 2 | 2026-05-17 |
| CSC8785 | Sichuan Airlines | 1 | 2026-04-21 |
| CSC8782 | Sichuan Airlines | 1 | 2026-05-03 |
| CSC8048 | Sichuan Airlines | 1 | 2026-04-16 |
| CSC8037 | Sichuan Airlines | 1 | 2026-05-01 |
| CSC6758 | - | 1 | 2026-04-25 |
Recent flights last 29
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-19 | CSC8786 | SZX → CKG | May 19, 13:20 UTC | May 19, 13:35 UTC | 15m |
| 2026-05-17 | CSC3772 | BKK → CKG | May 17, 13:15 UTC | May 17, 14:10 UTC | 55m |
| 2026-05-17 | CSC3771 | CKG → BKK | May 17, 10:50 UTC | May 17, 11:50 UTC | 1h 0m |
| 2026-05-15 | CSC3774 | KUL → CKG | May 15, 16:45 UTC | May 15, 19:05 UTC | 2h 20m |
| 2026-05-15 | CSC3773 | CKG → KUL | May 15, 15:00 UTC | May 15, 15:20 UTC | 20m |
| 2026-05-15 | CSC3773 | CKG → KUL | May 15, 12:50 UTC | May 15, 13:55 UTC | 1h 5m |
| 2026-05-14 | CSC8005 | - | May 14, 09:25 UTC | May 14, 09:35 UTC | 10m |
| 2026-05-12 | CSC3774 | KUL → CKG | May 12, 16:50 UTC | May 12, 19:10 UTC | 2h 20m |
| 2026-05-12 | CSC3773 | CKG → KUL | May 12, 15:15 UTC | May 12, 15:30 UTC | 15m |
| 2026-05-12 | CSC3773 | CKG → KUL | May 12, 13:05 UTC | May 12, 14:15 UTC | 1h 10m |
| 2026-05-11 | CSC3772 | BKK → CKG | May 11, 13:05 UTC | May 11, 14:00 UTC | 55m |
| 2026-05-11 | CSC3771 | CKG → BKK | May 11, 01:25 UTC | May 11, 11:50 UTC | 10h 25m |
| 2026-05-10 | CSC3771 | CKG → BKK | May 10, 12:05 UTC | May 11, 11:50 UTC | 23h 45m |
| 2026-05-10 | CSC3784 | TSA → CKG | May 10, 10:55 UTC | May 11, 03:45 UTC | 16h 50m |
| 2026-05-10 | CSC3783 | CKG → TSA | May 10, 03:35 UTC | May 10, 09:35 UTC | 6h 0m |
| 2026-05-10 | CSC8003 | - | May 10, 01:45 UTC | May 10, 01:55 UTC | 10m |
| 2026-05-08 | CSC8005 | - | May 8, 14:35 UTC | May 9, 01:15 UTC | 10h 40m |
| 2026-05-03 | CSC8782 | SZX → CKG | May 3, 02:30 UTC | May 3, 02:40 UTC | 10m |
| 2026-05-01 | CSC8037 | CKG → SHE | May 1, 01:20 UTC | May 1, 01:30 UTC | 10m |
| 2026-04-29 | CSC3784 | TSA → CKG | Apr 29, 11:10 UTC | Apr 29, 11:40 UTC | 30m |
| 2026-04-29 | CSC3783 | CKG → TSA | Apr 29, 01:35 UTC | Apr 29, 10:00 UTC | 8h 26m |
| 2026-04-25 | CSC6758 | - | Apr 25, 03:40 UTC | Apr 25, 03:55 UTC | 15m |
| 2026-04-25 | CSC8003 | - | Apr 25, 01:45 UTC | Apr 25, 01:55 UTC | 10m |
| 2026-04-21 | CSC8786 | SZX → CKG | Apr 21, 12:30 UTC | Apr 21, 12:40 UTC | 10m |
| 2026-04-21 | CSC8785 | CKG → SZX | Apr 21, 11:10 UTC | Apr 21, 11:25 UTC | 15m |
| 2026-04-19 | CSC3784 | TSA → CKG | Apr 19, 11:10 UTC | Apr 19, 12:35 UTC | 1h 25m |
| 2026-04-19 | CSC3783 | CKG → TSA | Apr 19, 08:45 UTC | Apr 19, 10:05 UTC | 1h 20m |
| 2026-04-17 | CSC8786 | SZX → CKG | Apr 17, 16:05 UTC | Apr 17, 16:15 UTC | 10m |
| 2026-04-16 | CSC8048 | ZUH → CKG | Apr 16, 02:09 UTC | Apr 16, 02:24 UTC | 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-321E page for operator, model, and routing details .