sensors Mode-S transponder
781245
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1330 · BOEING 737-800
- Hex
- 781245
- Octal
- 36011105
- Decimal
- 7,868,997
- Country
- CN
- Tail
- B-1330
- Type
- B738
- Flights observed
- 22
- Distinct callsigns
- 13
- Country
- CN
- Last broadcast
- 14h ago
Last known position
Country allocation
The ICAO 24-bit address 781245 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 13 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| KNA8274 | Knight Air | 4 | 2026-05-28 |
| KNA8215 | - | 3 | 2026-05-01 |
| KNA8273 | Knight Air | 2 | 2026-05-28 |
| KNA8270 | Knight Air | 2 | 2026-06-06 |
| KNA8269 | Knight Air | 2 | 2026-06-06 |
| KNA8212 | - | 2 | 2026-05-29 |
| KNA8286 | Knight Air | 1 | 2026-05-27 |
| KNA8278 | Knight Air | 1 | 2026-05-30 |
| KNA8249 | Knight Air | 1 | 2026-04-30 |
| KNA8216 | - | 1 | 2026-04-15 |
| KNA8214 | - | 1 | 2026-04-26 |
| KNA8213 | - | 1 | 2026-05-24 |
| KNA3031 | - | 1 | 2026-05-03 |
Recent flights last 22
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-06 | KNA8270 | PEK → KMG | Jun 6, 05:40 UTC | Jun 6, 06:00 UTC | 20m |
| 2026-06-06 | KNA8269 | KMG → PEK | Jun 6, 03:05 UTC | Jun 6, 03:35 UTC | 30m |
| 2026-06-05 | KNA8270 | PEK → KMG | Jun 5, 05:55 UTC | Jun 5, 15:30 UTC | 9h 35m |
| 2026-06-04 | KNA8269 | KMG → PEK | Jun 4, 15:10 UTC | Jun 5, 03:25 UTC | 12h 15m |
| 2026-05-30 | KNA8278 | WUH → KMG | May 30, 02:55 UTC | May 30, 03:05 UTC | 10m |
| 2026-05-29 | KNA8212 | - | May 29, 05:55 UTC | May 29, 06:15 UTC | 20m |
| 2026-05-28 | KNA8274 | HUZ → KMG | May 28, 03:35 UTC | May 28, 03:50 UTC | 15m |
| 2026-05-28 | KNA8274 | HUZ → KMG | May 28, 02:55 UTC | May 28, 03:05 UTC | 10m |
| 2026-05-28 | KNA8273 | KMG → HUZ | May 28, 01:00 UTC | May 28, 01:15 UTC | 15m |
| 2026-05-27 | KNA8286 | HUZ → KMG | May 27, 15:05 UTC | May 27, 15:55 UTC | 50m |
| 2026-05-24 | KNA8213 | - | May 24, 08:25 UTC | May 24, 08:35 UTC | 10m |
| 2026-05-03 | KNA3031 | - | May 3, 01:45 UTC | May 3, 01:55 UTC | 10m |
| 2026-05-01 | KNA8215 | - | May 1, 01:15 UTC | May 1, 10:50 UTC | 9h 35m |
| 2026-04-30 | KNA8249 | KHN → HRB | Apr 30, 13:20 UTC | May 1, 10:50 UTC | 21h 30m |
| 2026-04-28 | KNA8274 | HUZ → KMG | Apr 28, 02:45 UTC | Apr 28, 03:05 UTC | 20m |
| 2026-04-26 | KNA8214 | - | Apr 26, 11:45 UTC | Apr 26, 12:15 UTC | 30m |
| 2026-04-26 | KNA8274 | HUZ → KMG | Apr 26, 02:50 UTC | Apr 26, 03:00 UTC | 10m |
| 2026-04-26 | KNA8273 | KMG → HUZ | Apr 26, 01:25 UTC | Apr 26, 01:35 UTC | 10m |
| 2026-04-24 | KNA8215 | - | Apr 24, 10:20 UTC | Apr 24, 10:30 UTC | 10m |
| 2026-04-22 | KNA8212 | - | Apr 22, 03:05 UTC | Apr 22, 06:05 UTC | 3h 0m |
| 2026-04-15 | KNA8216 | - | Apr 15, 14:05 UTC | Apr 15, 14:35 UTC | 30m |
| 2026-04-15 | KNA8215 | - | Apr 15, 10:40 UTC | Apr 15, 10:55 UTC | 15m |
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-1330 page for operator, model, and routing details .