sensors Mode-S transponder
781061
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1547 · BOEING 737-800
- Hex
- 781061
- Octal
- 36010141
- Decimal
- 7,868,513
- Country
- CN
- Tail
- B-1547
- Type
- B738
- Flights observed
- 44
- Distinct callsigns
- 18
- Country
- CN
- Last broadcast
- 6d ago
Last known position
Country allocation
The ICAO 24-bit address 781061 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| KNA8282 | - | 8 | 2026-07-13 |
| KNA8274 | - | 7 | 2026-06-14 |
| KNA8278 | - | 4 | 2026-07-21 |
| KNA8249 | Knight Air | 4 | 2026-06-22 |
| KNA8277 | - | 3 | 2026-06-20 |
| KNA8280 | Knight Air | 2 | 2026-06-07 |
| KNA8270 | - | 2 | 2026-06-29 |
| KNA8242 | - | 2 | 2026-07-11 |
| KNA8241 | - | 2 | 2026-07-11 |
| KNA8284 | Knight Air | 1 | 2026-05-31 |
| KNA8283 | Knight Air | 1 | 2026-05-31 |
| KNA8273 | Knight Air | 1 | 2026-05-20 |
| KNA8272 | - | 1 | 2026-06-27 |
| KNA8250 | - | 1 | 2026-06-21 |
| KNA8245 | Knight Air | 1 | 2026-04-19 |
| KNA8214 | - | 1 | 2026-07-21 |
| KNA8213 | - | 1 | 2026-07-21 |
| KNA3031 | - | 1 | 2026-07-12 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-21 | KNA8214 | - | Jul 21, 11:35 UTC | Jul 21, 12:15 UTC | 40m |
| 2026-07-21 | KNA8213 | - | Jul 21, 09:15 UTC | Jul 21, 09:25 UTC | 10m |
| 2026-07-21 | KNA8278 | - | Jul 21, 03:45 UTC | Jul 21, 03:55 UTC | 10m |
| 2026-07-13 | KNA8282 | - | Jul 13, 04:10 UTC | Jul 13, 04:20 UTC | 10m |
| 2026-07-12 | KNA3031 | - | Jul 12, 01:40 UTC | Jul 12, 01:50 UTC | 10m |
| 2026-07-11 | KNA8242 | - | Jul 11, 08:10 UTC | Jul 11, 08:30 UTC | 20m |
| 2026-07-11 | KNA8241 | - | Jul 11, 05:01 UTC | Jul 11, 05:10 UTC | 10m |
| 2026-07-09 | KNA8242 | - | Jul 9, 09:20 UTC | Jul 9, 09:35 UTC | 15m |
| 2026-07-09 | KNA8241 | - | Jul 9, 06:05 UTC | Jul 9, 06:15 UTC | 10m |
| 2026-06-29 | KNA8270 | - | Jun 29, 06:19 UTC | Jun 30, 01:25 UTC | 19h 5m |
| 2026-06-29 | KNA8270 | - | Jun 29, 05:59 UTC | Jun 30, 01:25 UTC | 19h 25m |
| 2026-06-27 | KNA8272 | - | Jun 27, 23:19 UTC | Jun 28, 00:09 UTC | 50m |
| 2026-06-24 | KNA8282 | - | Jun 24, 04:20 UTC | Jun 24, 05:20 UTC | 1h 0m |
| 2026-06-22 | KNA8249 | KHN → HRB | Jun 22, 13:10 UTC | Jun 23, 01:54 UTC | 12h 45m |
| 2026-06-22 | KNA8249 | KHN → HRB | Jun 22, 01:35 UTC | Jun 22, 13:29 UTC | 11h 55m |
| 2026-06-21 | KNA8249 | KHN → HRB | Jun 21, 13:20 UTC | Jun 22, 01:49 UTC | 12h 30m |
| 2026-06-21 | KNA8250 | - | Jun 21, 01:14 UTC | Jun 21, 13:34 UTC | 12h 20m |
| 2026-06-20 | KNA8249 | KHN → HRB | Jun 20, 13:14 UTC | Jun 21, 01:30 UTC | 12h 15m |
| 2026-06-20 | KNA8278 | - | Jun 20, 02:14 UTC | Jun 20, 13:29 UTC | 11h 15m |
| 2026-06-20 | KNA8277 | - | Jun 20, 00:54 UTC | Jun 20, 01:05 UTC | 10m |
| 2026-06-14 | KNA8274 | - | Jun 14, 03:00 UTC | Jun 14, 03:10 UTC | 10m |
| 2026-06-13 | KNA8282 | - | Jun 13, 05:25 UTC | Jun 13, 23:45 UTC | 18h 20m |
| 2026-06-12 | KNA8274 | HUZ → KMG | Jun 12, 02:50 UTC | Jun 12, 03:45 UTC | 55m |
| 2026-06-09 | KNA8282 | CAN → KMG | Jun 9, 04:05 UTC | Jun 9, 08:45 UTC | 4h 40m |
| 2026-06-07 | KNA8280 | CAN → KMG | Jun 7, 16:00 UTC | Jun 7, 16:45 UTC | 45m |
| 2026-05-31 | KNA8284 | HAK → KMG | May 31, 14:05 UTC | May 31, 14:20 UTC | 15m |
| 2026-05-31 | KNA8283 | KMG → HAK | May 31, 11:25 UTC | May 31, 11:35 UTC | 10m |
| 2026-05-29 | KNA8280 | CAN → KMG | May 29, 18:35 UTC | May 29, 19:20 UTC | 45m |
| 2026-05-27 | KNA8278 | WUH → KMG | May 27, 02:24 UTC | May 27, 02:39 UTC | 15m |
| 2026-05-26 | KNA8282 | CAN → KMG | May 26, 04:15 UTC | May 26, 04:30 UTC | 15m |
| 2026-05-25 | KNA8274 | HUZ → KMG | May 25, 02:55 UTC | May 25, 03:10 UTC | 15m |
| 2026-05-22 | KNA8282 | CAN → KMG | May 22, 04:10 UTC | May 22, 04:20 UTC | 10m |
| 2026-05-21 | KNA8278 | WUH → KMG | May 21, 06:30 UTC | May 21, 06:40 UTC | 10m |
| 2026-05-21 | KNA8277 | KMG → WUH | May 21, 04:00 UTC | May 21, 04:15 UTC | 15m |
| 2026-05-21 | KNA8277 | KMG → WUH | May 21, 03:10 UTC | May 21, 03:20 UTC | 10m |
| 2026-05-20 | KNA8274 | HUZ → KMG | May 20, 02:50 UTC | May 20, 03:00 UTC | 10m |
| 2026-05-20 | KNA8273 | KMG → HUZ | May 20, 00:25 UTC | May 20, 00:35 UTC | 10m |
| 2026-05-19 | - | - | May 19, 03:50 UTC | May 19, 04:10 UTC | 20m |
| 2026-05-08 | KNA8274 | HUZ → KMG | May 8, 02:44 UTC | May 8, 03:04 UTC | 20m |
| 2026-05-04 | KNA8274 | HUZ → KMG | May 4, 02:39 UTC | May 4, 03:00 UTC | 20m |
| 2026-05-01 | KNA8274 | HUZ → KMG | May 1, 02:50 UTC | May 1, 08:45 UTC | 5h 55m |
| 2026-04-27 | KNA8282 | CAN → KMG | Apr 27, 03:45 UTC | Apr 27, 04:00 UTC | 15m |
| 2026-04-19 | KNA8245 | TFU → HRB | Apr 19, 04:20 UTC | Apr 19, 04:35 UTC | 15m |
| 2026-04-18 | KNA8282 | CAN → KMG | Apr 18, 04:05 UTC | Apr 18, 04:15 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-1547 page for operator, model, and routing details .