sensors Mode-S transponder
7809EC
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5747 · BOEING 737-800
- Hex
- 7809EC
- Octal
- 36004754
- Decimal
- 7,866,860
- Country
- CN
- Tail
- B-5747
- Type
- B738
- Flights observed
- 18
- Distinct callsigns
- 8
- Country
- CN
- Last broadcast
- 8d ago
Last known position
Country allocation
The ICAO 24-bit address 7809EC 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
Recent flights last 18
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-10 | CSN6283 | - | Jul 10, 10:25 UTC | Jul 10, 10:45 UTC | 20m |
| 2026-06-29 | CSN6317 | - | Jun 29, 04:39 UTC | Jun 29, 09:25 UTC | 4h 45m |
| 2026-06-28 | CSN6318 | - | Jun 28, 09:10 UTC | Jun 29, 05:00 UTC | 19h 50m |
| 2026-06-28 | CSN6317 | - | Jun 28, 04:44 UTC | Jun 28, 09:25 UTC | 4h 40m |
| 2026-06-27 | CSN6222 | - | Jun 27, 01:09 UTC | Jun 27, 04:44 UTC | 3h 35m |
| 2026-06-22 | CSN3988 | - | Jun 22, 05:29 UTC | Jun 23, 00:45 UTC | 19h 15m |
| 2026-06-12 | CSN6317 | WUH → HRB | Jun 12, 04:45 UTC | Jun 12, 09:15 UTC | 4h 30m |
| 2026-06-03 | CSN6283 | NNG → PKX | Jun 3, 11:05 UTC | Jun 3, 11:25 UTC | 20m |
| 2026-05-30 | CSN6317 | WUH → HRB | May 30, 04:40 UTC | May 30, 09:00 UTC | 4h 20m |
| 2026-05-16 | CSN6318 | HRB → WUH | May 16, 15:05 UTC | May 17, 09:05 UTC | 18h 0m |
| 2026-05-16 | CSN5104 | - | May 16, 14:41 UTC | May 17, 09:05 UTC | 18h 25m |
| 2026-05-16 | CSN5104 | - | May 16, 11:46 UTC | May 17, 09:05 UTC | 21h 20m |
| 2026-05-05 | CSN3987 | SZX → CSX | May 5, 05:15 UTC | May 5, 10:35 UTC | 5h 20m |
| 2026-05-01 | CSN5104 | - | May 1, 12:10 UTC | May 1, 15:05 UTC | 2h 55m |
| 2026-04-21 | CSN5104 | - | Apr 21, 11:45 UTC | Apr 21, 15:15 UTC | 3h 30m |
| 2026-04-17 | CSN5104 | - | Apr 17, 15:30 UTC | Apr 17, 15:55 UTC | 25m |
| 2026-04-13 | CSN5104 | - | Apr 13, 16:15 UTC | Apr 13, 16:45 UTC | 30m |
| 2026-04-13 | CSN5103 | - | Apr 13, 13:05 UTC | Apr 13, 16:15 UTC | 3h 10m |
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-5747 page for operator, model, and routing details .