sensors Mode-S transponder
781543
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-206S · BOEING 737-800
- Hex
- 781543
- Octal
- 36012503
- Decimal
- 7,869,763
- Country
- CN
- Tail
- B-206S
- Type
- B738
- Flights observed
- 29
- Distinct callsigns
- 8
- Country
- CN
- Last broadcast
- Jul 26, 06:25 UTC
Last known position
Country allocation
The ICAO 24-bit address 781543 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 |
|---|---|---|---|
| CES9870 | China Eastern Airlines | 16 | 2026-07-26 |
| CES9869 | China Eastern Airlines | 4 | 2026-07-25 |
| CES859 | - | 2 | 2026-07-10 |
| CES5675 | China Eastern Airlines | 2 | 2026-06-12 |
| CES860 | - | 1 | 2026-07-10 |
| CES6088 | China Eastern Airlines | 1 | 2026-05-01 |
| CES6087 | China Eastern Airlines | 1 | 2026-05-01 |
| CES5665 | - | 1 | 2026-06-21 |
Recent flights last 29
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CES9870 | SHE → CAN | Jul 26, 03:05 UTC | Jul 26, 06:25 UTC | 3h 20m |
| 2026-07-25 | CES9870 | SHE → CAN | Jul 25, 06:15 UTC | Jul 26, 03:10 UTC | 20h 55m |
| 2026-07-25 | CES9869 | CAN → SHE | Jul 25, 02:35 UTC | Jul 25, 06:40 UTC | 4h 5m |
| 2026-07-24 | CES9870 | SHE → CAN | Jul 24, 06:50 UTC | Jul 25, 06:40 UTC | 23h 50m |
| 2026-07-24 | CES9869 | CAN → SHE | Jul 24, 06:30 UTC | Jul 25, 03:15 UTC | 20h 45m |
| 2026-07-24 | CES9869 | CAN → SHE | Jul 24, 03:00 UTC | Jul 25, 02:45 UTC | 23h 45m |
| 2026-07-23 | CES9870 | SHE → CAN | Jul 23, 06:25 UTC | Jul 24, 03:15 UTC | 20h 50m |
| 2026-07-23 | CES9870 | SHE → CAN | Jul 23, 03:00 UTC | Jul 23, 06:45 UTC | 3h 45m |
| 2026-07-21 | CES9870 | SHE → CAN | Jul 21, 03:00 UTC | Jul 21, 06:35 UTC | 3h 35m |
| 2026-07-20 | CES9870 | SHE → CAN | Jul 20, 06:15 UTC | Jul 21, 03:20 UTC | 21h 4m |
| 2026-07-20 | CES9869 | CAN → SHE | Jul 20, 03:05 UTC | Jul 20, 06:15 UTC | 3h 10m |
| 2026-07-19 | CES9870 | SHE → CAN | Jul 19, 03:00 UTC | Jul 19, 07:10 UTC | 4h 10m |
| 2026-07-18 | CES9870 | SHE → CAN | Jul 18, 06:50 UTC | Jul 19, 06:45 UTC | 23h 55m |
| 2026-07-18 | CES9870 | - | Jul 18, 06:25 UTC | Jul 19, 03:25 UTC | 21h 0m |
| 2026-07-18 | CES9870 | - | Jul 18, 03:00 UTC | Jul 18, 06:50 UTC | 3h 50m |
| 2026-07-16 | CES9870 | - | Jul 16, 02:55 UTC | Jul 16, 06:40 UTC | 3h 45m |
| 2026-07-15 | CES9870 | - | Jul 15, 06:50 UTC | Jul 16, 06:40 UTC | 23h 50m |
| 2026-07-15 | CES9870 | - | Jul 15, 06:25 UTC | Jul 16, 03:15 UTC | 20h 50m |
| 2026-07-15 | CES9870 | - | Jul 15, 03:05 UTC | Jul 15, 06:50 UTC | 3h 45m |
| 2026-07-13 | CES9870 | - | Jul 13, 02:55 UTC | Jul 13, 07:30 UTC | 4h 35m |
| 2026-07-10 | CES860 | - | Jul 10, 20:15 UTC | Jul 10, 23:05 UTC | 2h 50m |
| 2026-07-10 | CES859 | - | Jul 10, 18:30 UTC | Jul 10, 18:45 UTC | 15m |
| 2026-07-10 | CES859 | - | Jul 10, 16:00 UTC | Jul 10, 16:20 UTC | 20m |
| 2026-06-21 | CES5665 | - | Jun 21, 04:30 UTC | Jun 21, 04:39 UTC | 10m |
| 2026-06-12 | CES5675 | KHN → HAK | Jun 12, 04:05 UTC | Jun 12, 06:55 UTC | 2h 50m |
| 2026-05-25 | - | - | May 25, 04:25 UTC | May 25, 04:35 UTC | 10m |
| 2026-05-02 | CES5675 | KHN → HAK | May 2, 04:00 UTC | May 2, 06:50 UTC | 2h 50m |
| 2026-05-01 | CES6088 | BKK → KMG | May 1, 07:05 UTC | May 2, 06:45 UTC | 23h 40m |
| 2026-05-01 | CES6087 | KMG → BKK | May 1, 04:45 UTC | May 1, 05:20 UTC | 35m |
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-206S page for operator, model, and routing details .