sensors Mode-S transponder
781536
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-206N · BOEING 737 MAX 8
- Hex
- 781536
- Octal
- 36012466
- Decimal
- 7,869,750
- Country
- CN
- Tail
- B-206N
- Type
- B38M
- Flights observed
- 21
- Distinct callsigns
- 7
- Country
- CN
- Last broadcast
- 27d ago
Last known position
Country allocation
The ICAO 24-bit address 781536 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 7 distinct
Recent flights last 21
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | LKE9844 | KOW → HAK | Jul 24, 02:50 UTC | Jul 24, 10:35 UTC | 7h 45m |
| 2026-07-22 | LKE9844 | KOW → HAK | Jul 22, 11:25 UTC | Jul 22, 11:40 UTC | 15m |
| 2026-07-21 | LKE9972 | HAK → KMG | Jul 21, 13:05 UTC | Jul 22, 11:30 UTC | 22h 25m |
| 2026-07-21 | LKE9844 | KOW → HAK | Jul 21, 03:35 UTC | Jul 21, 13:10 UTC | 9h 35m |
| 2026-07-12 | LKE9844 | - | Jul 12, 02:55 UTC | Jul 12, 12:01 UTC | 9h 5m |
| 2026-07-08 | LKE9980 | - | Jul 8, 15:40 UTC | Jul 8, 15:50 UTC | 10m |
| 2026-07-06 | LKE9844 | - | Jul 6, 10:35 UTC | Jul 7, 01:40 UTC | 15h 5m |
| 2026-07-05 | LKE9844 | - | Jul 5, 10:10 UTC | Jul 5, 10:25 UTC | 15m |
| 2026-07-04 | LKE9844 | - | Jul 4, 12:45 UTC | Jul 5, 10:25 UTC | 21h 40m |
| 2026-07-04 | LKE9971 | - | Jul 4, 00:05 UTC | Jul 4, 13:00 UTC | 12h 55m |
| 2026-07-03 | LKE9971 | - | Jul 3, 01:35 UTC | Jul 4, 00:25 UTC | 22h 50m |
| 2026-07-02 | LKE9879 | - | Jul 2, 10:25 UTC | Jul 3, 01:40 UTC | 15h 15m |
| 2026-07-02 | LKE9972 | - | Jul 2, 03:00 UTC | Jul 3, 01:30 UTC | 22h 30m |
| 2026-07-02 | LKE9972 | - | Jul 2, 00:10 UTC | Jul 2, 14:25 UTC | 14h 15m |
| 2026-05-30 | LKE9976 | CAN → KMG | May 30, 14:00 UTC | May 30, 14:55 UTC | 55m |
| 2026-05-25 | LKE9890 | SZX → KMG | May 25, 15:15 UTC | May 25, 15:25 UTC | 10m |
| 2026-05-22 | LKE9890 | SZX → KMG | May 22, 16:50 UTC | May 22, 17:05 UTC | 15m |
| 2026-05-06 | LKE9890 | SZX → KMG | May 6, 15:05 UTC | May 6, 15:25 UTC | 20m |
| 2026-05-01 | LKE9890 | SZX → KMG | May 1, 15:25 UTC | May 1, 15:45 UTC | 20m |
| 2026-04-29 | LKE9890 | SZX → KMG | Apr 29, 17:35 UTC | Apr 29, 17:45 UTC | 10m |
| 2026-04-27 | LKE9890 | SZX → KMG | Apr 27, 15:05 UTC | Apr 27, 15:15 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-206N page for operator, model, and routing details .