sensors Mode-S transponder
7811D4
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1482 · BOEING 737-800
- Hex
- 7811D4
- Octal
- 36010724
- Decimal
- 7,868,884
- Country
- CN
- Tail
- B-1482
- Type
- B738
- Flights observed
- 26
- Distinct callsigns
- 14
- Country
- CN
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 7811D4 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 |
|---|---|---|---|
| CGN8349 | Chang'an Airlines | 7 | 2026-05-01 |
| CGN8495 | Chang'an Airlines | 2 | 2026-07-25 |
| CGN8471 | - | 2 | 2026-07-22 |
| CGN8448 | Chang'an Airlines | 2 | 2026-04-30 |
| CGN8435 | - | 2 | 2026-06-30 |
| CGN6023 | Chang'an Airlines | 2 | 2026-05-06 |
| CGN6002 | - | 2 | 2026-07-09 |
| CGN8500 | Chang'an Airlines | 1 | 2026-06-10 |
| CGN8463 | - | 1 | 2026-05-30 |
| CGN8415 | - | 1 | 2026-05-25 |
| CGN8414 | Chang'an Airlines | 1 | 2026-06-27 |
| CGN8331 | - | 1 | 2026-07-18 |
| CGN8326 | Chang'an Airlines | 1 | 2026-06-12 |
| CGN8309 | - | 1 | 2026-07-14 |
Recent flights last 26
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | CGN8495 | CSX → CGQ | Jul 25, 11:40 UTC | Jul 25, 11:55 UTC | 15m |
| 2026-07-22 | CGN8471 | - | Jul 22, 11:15 UTC | Jul 22, 11:30 UTC | 15m |
| 2026-07-18 | CGN8331 | - | Jul 18, 02:29 UTC | Jul 18, 02:40 UTC | 10m |
| 2026-07-14 | CGN8309 | - | Jul 14, 23:40 UTC | Jul 15, 09:35 UTC | 9h 55m |
| 2026-07-09 | CGN6002 | - | Jul 9, 11:25 UTC | Jul 9, 11:40 UTC | 15m |
| 2026-07-08 | CGN8471 | - | Jul 8, 10:45 UTC | Jul 8, 10:55 UTC | 10m |
| 2026-06-30 | CGN8435 | - | Jun 30, 08:50 UTC | Jun 30, 09:05 UTC | 15m |
| 2026-06-27 | CGN8414 | SYX → NNY | Jun 27, 02:45 UTC | Jun 27, 05:44 UTC | 3h 0m |
| 2026-06-23 | CGN8435 | - | Jun 23, 08:39 UTC | Jun 23, 08:50 UTC | 10m |
| 2026-06-12 | CGN8326 | HAK → KJH | Jun 12, 11:50 UTC | Jun 13, 04:50 UTC | 16h 59m |
| 2026-06-10 | CGN8500 | ZUH → ACX | Jun 10, 11:45 UTC | Jun 10, 11:55 UTC | 10m |
| 2026-05-30 | CGN8463 | - | May 30, 05:00 UTC | May 30, 09:05 UTC | 4h 5m |
| 2026-05-25 | CGN8415 | - | May 25, 02:30 UTC | May 25, 02:50 UTC | 20m |
| 2026-05-06 | CGN6023 | XIY → HRB | May 6, 09:40 UTC | May 6, 09:55 UTC | 15m |
| 2026-05-05 | CGN6002 | SZX → XIY | May 5, 11:40 UTC | May 5, 11:50 UTC | 10m |
| 2026-05-03 | CGN6023 | XIY → HRB | May 3, 09:45 UTC | May 3, 10:00 UTC | 15m |
| 2026-05-01 | CGN8349 | XIY → CGQ | May 1, 23:35 UTC | May 2, 09:15 UTC | 9h 40m |
| 2026-05-01 | CGN8495 | CSX → CGQ | May 1, 09:10 UTC | May 2, 09:00 UTC | 23h 50m |
| 2026-04-30 | CGN8349 | XIY → CGQ | Apr 30, 23:30 UTC | May 1, 09:25 UTC | 9h 55m |
| 2026-04-30 | CGN8448 | CGO → CGQ | Apr 30, 08:55 UTC | Apr 30, 23:45 UTC | 14h 50m |
| 2026-04-29 | CGN8349 | XIY → CGQ | Apr 29, 23:55 UTC | Apr 30, 09:15 UTC | 9h 20m |
| 2026-04-29 | CGN8349 | XIY → CGQ | Apr 29, 09:05 UTC | Apr 30, 09:00 UTC | 23h 54m |
| 2026-04-29 | CGN8349 | XIY → CGQ | Apr 29, 08:55 UTC | Apr 30, 00:10 UTC | 15h 15m |
| 2026-04-28 | CGN8349 | XIY → CGQ | Apr 28, 23:45 UTC | Apr 29, 09:05 UTC | 9h 21m |
| 2026-04-28 | CGN8448 | CGO → CGQ | Apr 28, 08:45 UTC | Apr 28, 23:54 UTC | 15h 10m |
| 2026-04-27 | CGN8349 | XIY → CGQ | Apr 27, 23:35 UTC | Apr 28, 09:00 UTC | 9h 25m |
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-1482 page for operator, model, and routing details .