sensors Mode-S transponder
780D0D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1718 · BOEING 737-800
- Hex
- 780D0D
- Octal
- 36006415
- Decimal
- 7,867,661
- Country
- CN
- Tail
- B-1718
- Type
- B738
- Flights observed
- 20
- Distinct callsigns
- 10
- Country
- CN
- Last broadcast
- 8d ago
Last known position
Country allocation
The ICAO 24-bit address 780D0D 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 10 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN6577 | - | 4 | 2026-07-09 |
| CSN5599 | - | 4 | 2026-06-27 |
| CSN6105 | China Southern Airlines | 3 | 2026-06-25 |
| CSN6106 | China Southern Airlines | 2 | 2026-06-26 |
| CSN5600 | - | 2 | 2026-07-08 |
| CSN5736 | China Southern Airlines | 1 | 2026-06-13 |
| CSN3686 | - | 1 | 2026-07-10 |
| CSN3668 | - | 1 | 2026-06-21 |
| CSN3659 | China Southern Airlines | 1 | 2026-04-16 |
| CSN2987 | - | 1 | 2026-06-18 |
Recent flights last 20
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-10 | CSN3686 | - | Jul 10, 12:20 UTC | Jul 10, 12:35 UTC | 15m |
| 2026-07-09 | CSN6577 | - | Jul 9, 03:00 UTC | Jul 9, 16:20 UTC | 13h 20m |
| 2026-07-08 | CSN6577 | - | Jul 8, 13:55 UTC | Jul 9, 12:00 UTC | 22h 5m |
| 2026-07-08 | CSN5600 | - | Jul 8, 10:55 UTC | Jul 8, 11:10 UTC | 15m |
| 2026-06-27 | CSN5599 | - | Jun 27, 05:04 UTC | Jun 27, 05:19 UTC | 15m |
| 2026-06-26 | CSN6106 | HAK → KWE | Jun 26, 13:49 UTC | Jun 27, 02:04 UTC | 12h 15m |
| 2026-06-26 | CSN5600 | - | Jun 26, 11:09 UTC | Jun 26, 11:30 UTC | 20m |
| 2026-06-25 | CSN5599 | - | Jun 25, 04:54 UTC | Jun 25, 05:09 UTC | 15m |
| 2026-06-25 | CSN6105 | KWE → HAK | Jun 25, 02:10 UTC | Jun 25, 02:19 UTC | 10m |
| 2026-06-23 | CSN5599 | - | Jun 23, 04:39 UTC | Jun 23, 04:55 UTC | 15m |
| 2026-06-23 | CSN6105 | KWE → HAK | Jun 23, 02:15 UTC | Jun 23, 02:34 UTC | 20m |
| 2026-06-22 | CSN5599 | - | Jun 22, 04:15 UTC | Jun 22, 04:30 UTC | 15m |
| 2026-06-22 | CSN6105 | KWE → HAK | Jun 22, 01:55 UTC | Jun 22, 02:04 UTC | 10m |
| 2026-06-21 | CSN3668 | - | Jun 21, 11:30 UTC | Jun 21, 11:40 UTC | 10m |
| 2026-06-18 | CSN2987 | - | Jun 18, 02:40 UTC | Jun 18, 03:25 UTC | 45m |
| 2026-06-13 | CSN5736 | HAK → KWE | Jun 13, 16:15 UTC | Jun 13, 16:25 UTC | 10m |
| 2026-06-12 | CSN6106 | HAK → KWE | Jun 12, 03:05 UTC | Jun 12, 03:15 UTC | 10m |
| 2026-05-07 | CSN6577 | HAK → KWE | May 7, 03:00 UTC | May 7, 03:15 UTC | 15m |
| 2026-05-04 | CSN6577 | HAK → KWE | May 4, 02:54 UTC | May 4, 03:09 UTC | 15m |
| 2026-04-16 | CSN3659 | KWE → XMN | Apr 16, 01:20 UTC | Apr 16, 01:30 UTC | 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-1718 page for operator, model, and routing details .