sensors Mode-S transponder
7811D3
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1481 · BOEING 737-800
- Hex
- 7811D3
- Octal
- 36010723
- Decimal
- 7,868,883
- Country
- CN
- Tail
- B-1481
- Type
- B738
- Flights observed
- 31
- Distinct callsigns
- 11
- Country
- CN
- Last broadcast
- 5h ago
Last known position
Country allocation
The ICAO 24-bit address 7811D3 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 11 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CGN8386 | Chang'an Airlines | 8 | 2026-05-30 |
| CGN8385 | Chang'an Airlines | 8 | 2026-05-29 |
| CGN8477 | Chang'an Airlines | 3 | 2026-05-29 |
| CGN8455 | Chang'an Airlines | 3 | 2026-06-04 |
| CGN6002 | Chang'an Airlines | 3 | 2026-05-26 |
| CGN8500 | Chang'an Airlines | 1 | 2026-06-05 |
| CGN8499 | Chang'an Airlines | 1 | 2026-04-22 |
| CGN8478 | - | 1 | 2026-04-17 |
| CGN8474 | Chang'an Airlines | 1 | 2026-05-31 |
| CGN8315 | Chang'an Airlines | 1 | 2026-06-06 |
| CGN6001 | Chang'an Airlines | 1 | 2026-05-07 |
Recent flights last 31
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-06 | CGN8315 | BZX → HAK | Jun 6, 08:50 UTC | Jun 6, 09:00 UTC | 10m |
| 2026-06-05 | CGN8500 | ZUH → ACX | Jun 5, 11:35 UTC | Jun 6, 09:00 UTC | 21h 25m |
| 2026-06-04 | CGN8455 | CSX → HRB | Jun 4, 05:10 UTC | Jun 4, 10:00 UTC | 4h 50m |
| 2026-05-31 | CGN8474 | VTE → YIH | May 31, 08:25 UTC | May 31, 12:05 UTC | 3h 40m |
| 2026-05-30 | CGN8386 | BKK → YIH | May 30, 12:50 UTC | May 31, 12:05 UTC | 23h 15m |
| 2026-05-30 | CGN8386 | BKK → YIH | May 30, 11:55 UTC | May 31, 08:40 UTC | 20h 45m |
| 2026-05-29 | CGN8385 | YIH → BKK | May 29, 18:10 UTC | May 30, 10:10 UTC | 16h 0m |
| 2026-05-29 | CGN8477 | YIH → KCH | May 29, 10:05 UTC | May 30, 08:45 UTC | 22h 40m |
| 2026-05-28 | CGN8455 | CSX → HRB | May 28, 05:25 UTC | May 28, 10:05 UTC | 4h 40m |
| 2026-05-27 | CGN8455 | CSX → HRB | May 27, 11:55 UTC | May 28, 10:05 UTC | 22h 10m |
| 2026-05-26 | CGN6002 | SZX → XIY | May 26, 11:24 UTC | May 26, 11:39 UTC | 15m |
| 2026-05-23 | CGN8386 | BKK → YIH | May 23, 11:50 UTC | May 23, 12:40 UTC | 50m |
| 2026-05-23 | CGN8385 | YIH → BKK | May 23, 09:10 UTC | May 23, 10:05 UTC | 55m |
| 2026-05-16 | CGN8386 | BKK → YIH | May 16, 11:55 UTC | May 16, 12:40 UTC | 45m |
| 2026-05-16 | CGN8385 | YIH → BKK | May 16, 09:10 UTC | May 16, 10:16 UTC | 1h 5m |
| 2026-05-09 | CGN8386 | BKK → YIH | May 9, 13:25 UTC | May 9, 14:20 UTC | 55m |
| 2026-05-09 | CGN8385 | YIH → BKK | May 9, 10:40 UTC | May 9, 11:40 UTC | 1h 0m |
| 2026-05-07 | CGN6002 | SZX → XIY | May 7, 11:30 UTC | May 7, 11:40 UTC | 10m |
| 2026-05-07 | CGN6001 | XIY → SZX | May 7, 09:45 UTC | May 7, 09:55 UTC | 10m |
| 2026-05-02 | CGN8386 | BKK → YIH | May 2, 12:00 UTC | May 2, 12:25 UTC | 25m |
| 2026-05-02 | CGN8385 | YIH → BKK | May 2, 09:35 UTC | May 2, 10:15 UTC | 40m |
| 2026-04-25 | CGN8386 | BKK → YIH | Apr 25, 12:45 UTC | Apr 25, 13:05 UTC | 20m |
| 2026-04-25 | CGN8385 | YIH → BKK | Apr 25, 10:40 UTC | Apr 25, 11:15 UTC | 35m |
| 2026-04-24 | CGN8385 | YIH → BKK | Apr 24, 16:25 UTC | Apr 25, 11:15 UTC | 18h 50m |
| 2026-04-24 | CGN8477 | YIH → KCH | Apr 24, 11:40 UTC | Apr 25, 10:45 UTC | 23h 5m |
| 2026-04-23 | CGN6002 | SZX → XIY | Apr 23, 15:10 UTC | Apr 23, 15:20 UTC | 10m |
| 2026-04-22 | CGN8499 | XIY → ACX | Apr 22, 09:15 UTC | Apr 22, 09:25 UTC | 10m |
| 2026-04-18 | CGN8386 | - | Apr 18, 12:10 UTC | Apr 18, 12:20 UTC | 10m |
| 2026-04-18 | CGN8385 | YIH → BKK | Apr 18, 10:05 UTC | Apr 18, 10:25 UTC | 20m |
| 2026-04-17 | CGN8478 | - | Apr 17, 16:40 UTC | Apr 17, 17:00 UTC | 20m |
| 2026-04-17 | CGN8477 | - | Apr 17, 12:05 UTC | Apr 17, 12:20 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-1481 page for operator, model, and routing details .