sensors Mode-S transponder
7823AD
ICAO 24-bit transponder address · allocated to China
- Hex
- 7823AD
- Octal
- 36021655
- Decimal
- 7,873,453
- Country
- CN
- Flights observed
- 25
- Distinct callsigns
- 8
- Country
- CN
- Last broadcast
- 26d ago
Last known position
Country allocation
The ICAO 24-bit address 7823AD 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 8 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CES202 | China Eastern Airlines | 7 | 2026-07-26 |
| CES201 | China Eastern Airlines | 6 | 2026-07-25 |
| CES5343 | China Eastern Airlines | 5 | 2026-07-24 |
| CES5352 | China Eastern Airlines | 2 | 2026-07-24 |
| BOE728 | - | 2 | 2026-06-23 |
| CES799 | - | 1 | 2026-06-28 |
| CES5333 | - | 1 | 2026-07-19 |
| CES5158 | - | 1 | 2026-07-13 |
Recent flights last 25
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CES202 | LGW → PVG | Jul 26, 11:00 UTC | Jul 26, 17:10 UTC | 6h 10m |
| 2026-07-25 | CES201 | PVG → LGW | Jul 25, 19:10 UTC | Jul 26, 05:10 UTC | 10h 0m |
| 2026-07-24 | CES5352 | SZX → PVG | Jul 24, 12:40 UTC | Jul 24, 14:00 UTC | 1h 20m |
| 2026-07-24 | CES5343 | PVG → SZX | Jul 24, 08:50 UTC | Jul 24, 09:10 UTC | 20m |
| 2026-07-23 | CES202 | LGW → PVG | Jul 23, 13:20 UTC | Jul 24, 08:00 UTC | 18h 40m |
| 2026-07-23 | CES202 | LGW → PVG | Jul 23, 11:20 UTC | Jul 24, 08:00 UTC | 20h 40m |
| 2026-07-23 | CES202 | LGW → PVG | Jul 23, 11:00 UTC | Jul 24, 08:00 UTC | 21h 0m |
| 2026-07-22 | CES201 | PVG → LGW | Jul 22, 19:35 UTC | Jul 23, 05:10 UTC | 9h 35m |
| 2026-07-20 | CES202 | LGW → PVG | Jul 20, 10:55 UTC | Jul 20, 17:20 UTC | 6h 25m |
| 2026-07-19 | CES201 | PVG → LGW | Jul 19, 19:15 UTC | Jul 20, 05:10 UTC | 9h 55m |
| 2026-07-19 | CES201 | PVG → LGW | Jul 19, 08:50 UTC | Jul 20, 05:10 UTC | 20h 20m |
| 2026-07-19 | CES5333 | - | Jul 19, 02:40 UTC | Jul 19, 03:15 UTC | 35m |
| 2026-07-17 | CES202 | - | Jul 17, 11:00 UTC | Jul 17, 20:20 UTC | 9h 20m |
| 2026-07-16 | CES201 | PVG → LGW | Jul 16, 19:10 UTC | Jul 17, 05:15 UTC | 10h 5m |
| 2026-07-14 | CES202 | - | Jul 14, 11:10 UTC | Jul 15, 03:45 UTC | 16h 34m |
| 2026-07-13 | CES201 | - | Jul 13, 19:35 UTC | Jul 14, 05:25 UTC | 9h 50m |
| 2026-07-13 | CES5343 | - | Jul 13, 12:10 UTC | Jul 13, 12:30 UTC | 20m |
| 2026-07-13 | CES5158 | - | Jul 13, 06:45 UTC | Jul 13, 06:55 UTC | 10m |
| 2026-07-10 | CES5352 | - | Jul 10, 12:00 UTC | Jul 10, 13:05 UTC | 1h 5m |
| 2026-07-10 | CES5343 | - | Jul 10, 08:40 UTC | Jul 10, 09:05 UTC | 25m |
| 2026-07-07 | CES5343 | - | Jul 7, 13:05 UTC | Jul 7, 13:15 UTC | 10m |
| 2026-07-06 | CES5343 | - | Jul 6, 09:40 UTC | Jul 6, 11:45 UTC | 2h 5m |
| 2026-06-28 | CES799 | - | Jun 28, 03:25 UTC | Jun 28, 18:10 UTC | 14h 45m |
| 2026-06-23 | BOE728 | - | Jun 23, 15:15 UTC | Jun 23, 17:39 UTC | 2h 25m |
| 2026-06-16 | BOE728 | - | Jun 16, 18:25 UTC | Jun 16, 21:05 UTC | 2h 41m |
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.