sensors Mode-S transponder
781163
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1426 · BOEING 737-800
- Hex
- 781163
- Octal
- 36010543
- Decimal
- 7,868,771
- Country
- CN
- Tail
- B-1426
- Type
- B738
- Flights observed
- 41
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 25, 06:00 UTC
Last known position
Country allocation
The ICAO 24-bit address 781163 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 |
|---|---|---|---|
| CUA877 | China United Airlines | 3 | 2026-07-21 |
| CUA5525 | China United Airlines | 3 | 2026-07-21 |
| CUA5876 | China United Airlines | 2 | 2026-07-24 |
| CUA5630 | - | 2 | 2026-07-23 |
| CUA5602 | China United Airlines | 2 | 2026-05-05 |
| CUA5567 | - | 2 | 2026-07-23 |
| CUA5290 | - | 2 | 2026-07-17 |
| CUA5119 | - | 2 | 2026-06-25 |
| CUA2867 | - | 2 | 2026-07-15 |
| CUA5865 | China United Airlines | 1 | 2026-05-06 |
| CUA5830 | - | 1 | 2026-07-24 |
| CUA5829 | China United Airlines | 1 | 2026-07-24 |
| CUA5802 | China United Airlines | 1 | 2026-06-10 |
| CUA5801 | China United Airlines | 1 | 2026-05-28 |
| CUA5686 | China United Airlines | 1 | 2026-04-26 |
| CUA5685 | China United Airlines | 1 | 2026-04-26 |
| CUA5671 | China United Airlines | 1 | 2026-07-24 |
| CUA5629 | China United Airlines | 1 | 2026-07-07 |
| CUA5597 | China United Airlines | 1 | 2026-05-03 |
| CUA5570 | China United Airlines | 1 | 2026-05-06 |
Recent flights last 41
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | CUA5671 | PKX → KMG | Jul 24, 23:15 UTC | Jul 25, 06:00 UTC | 6h 45m |
| 2026-07-24 | CUA5830 | - | Jul 24, 16:10 UTC | Jul 24, 16:35 UTC | 25m |
| 2026-07-24 | CUA5829 | PKX → CAN | Jul 24, 09:45 UTC | Jul 24, 10:20 UTC | 35m |
| 2026-07-24 | CUA5876 | ZUH → PKX | Jul 24, 07:25 UTC | Jul 24, 07:50 UTC | 25m |
| 2026-07-24 | CUA5876 | ZUH → PKX | Jul 24, 05:25 UTC | Jul 24, 05:45 UTC | 20m |
| 2026-07-23 | CUA5630 | - | Jul 23, 15:35 UTC | Jul 23, 15:50 UTC | 15m |
| 2026-07-23 | CUA5567 | - | Jul 23, 03:05 UTC | Jul 23, 03:15 UTC | 10m |
| 2026-07-22 | CUA2969 | - | Jul 22, 11:20 UTC | Jul 22, 11:55 UTC | 35m |
| 2026-07-21 | CUA877 | PKX → VVO | Jul 21, 05:55 UTC | Jul 21, 06:05 UTC | 10m |
| 2026-07-21 | CUA5526 | YSQ → PKX | Jul 21, 03:50 UTC | Jul 21, 04:05 UTC | 15m |
| 2026-07-21 | CUA5525 | PKX → YSQ | Jul 21, 00:30 UTC | Jul 21, 00:40 UTC | 10m |
| 2026-07-20 | CUA5158 | - | Jul 20, 16:20 UTC | Jul 20, 16:35 UTC | 15m |
| 2026-07-17 | CUA5290 | - | Jul 17, 00:55 UTC | Jul 17, 04:14 UTC | 3h 20m |
| 2026-07-15 | CUA2867 | - | Jul 15, 13:15 UTC | Jul 15, 13:40 UTC | 25m |
| 2026-07-13 | CUA877 | - | Jul 13, 02:55 UTC | Jul 13, 03:05 UTC | 10m |
| 2026-07-09 | CUA5525 | - | Jul 9, 00:25 UTC | Jul 9, 00:40 UTC | 15m |
| 2026-07-08 | CUA877 | - | Jul 8, 05:50 UTC | Jul 8, 06:10 UTC | 20m |
| 2026-07-08 | CUA5525 | - | Jul 8, 00:15 UTC | Jul 8, 00:30 UTC | 15m |
| 2026-07-07 | CUA5630 | - | Jul 7, 15:50 UTC | Jul 7, 16:05 UTC | 15m |
| 2026-07-07 | CUA5629 | PKX → XNN | Jul 7, 11:10 UTC | Jul 7, 11:25 UTC | 15m |
| 2026-07-07 | CUA5568 | - | Jul 7, 06:35 UTC | Jul 7, 06:55 UTC | 20m |
| 2026-07-07 | CUA5567 | - | Jul 7, 02:10 UTC | Jul 7, 02:25 UTC | 15m |
| 2026-07-03 | CUA2867 | - | Jul 3, 14:15 UTC | Jul 3, 15:00 UTC | 45m |
| 2026-06-25 | CUA5119 | - | Jun 25, 03:15 UTC | Jun 25, 03:24 UTC | 10m |
| 2026-06-10 | CUA5802 | DSN → PKX | Jun 10, 05:40 UTC | Jun 10, 05:50 UTC | 10m |
| 2026-05-28 | CUA5801 | PKX → DSN | May 28, 13:30 UTC | May 28, 13:40 UTC | 10m |
| 2026-05-21 | CUA2819 | DSN → NKG | May 21, 23:30 UTC | May 21, 23:55 UTC | 25m |
| 2026-05-12 | CUA5119 | TFU → HUZ | May 12, 02:50 UTC | May 12, 03:00 UTC | 10m |
| 2026-05-06 | CUA5865 | PKX → FUO | May 6, 11:35 UTC | May 6, 11:55 UTC | 20m |
| 2026-05-06 | CUA5570 | DQA → PKX | May 6, 09:30 UTC | May 6, 09:40 UTC | 10m |
| 2026-05-06 | CUA5569 | PKX → DQA | May 6, 05:15 UTC | May 6, 05:25 UTC | 10m |
| 2026-05-05 | CUA5602 | YZY → PKX | May 5, 14:00 UTC | May 5, 14:15 UTC | 15m |
| 2026-05-04 | CUA5602 | YZY → PKX | May 4, 15:20 UTC | May 4, 15:40 UTC | 20m |
| 2026-05-03 | CUA5597 | PKX → JMU | May 3, 09:30 UTC | May 3, 09:40 UTC | 10m |
| 2026-04-28 | CUA5290 | - | Apr 28, 04:35 UTC | Apr 28, 04:50 UTC | 15m |
| 2026-04-27 | CUA5289 | - | Apr 27, 23:15 UTC | Apr 27, 23:25 UTC | 10m |
| 2026-04-26 | CUA5686 | HMI → PKX | Apr 26, 14:10 UTC | Apr 26, 14:20 UTC | 10m |
| 2026-04-26 | CUA5685 | PKX → HMI | Apr 26, 07:55 UTC | Apr 26, 08:10 UTC | 15m |
| 2026-04-14 | CUA5396 | DSN → PKX | Apr 14, 10:15 UTC | Apr 14, 10:30 UTC | 15m |
| 2026-04-13 | CUA5252 | - | Apr 13, 10:45 UTC | Apr 13, 10:55 UTC | 10m |
| 2026-04-13 | CUA5251 | - | Apr 13, 08:40 UTC | Apr 13, 08:55 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-1426 page for operator, model, and routing details .