# N402KN: 2005 Air Tractor AT-402B, registration cancelled 2021-11-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 10, 2021
- Exported to: Canada
- Status when cancelled: Valid registration
- Airframe: [Air Tractor AT-402B](https://openairdocs.org/model/air-tractor-at-402b) (registry code 0390208)
- Engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52034)
- Data sheets: [TCDS A17SW](https://openairdocs.org/tcds/A17SW) (OpenAirDocs)
- Serial number: 402B-1159
- Year built: 2005
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control, forest
- Airworthiness date: January 24, 2005
- Certificate issued: June 20, 2016
- Last registry action: January 31, 2020
- Mode S code: A4B4FD
- Owner when cancelled: [Yost John B](https://openairdocs.org/faa-owner/YOST%20JOHN%20B)
- Location: [Watertown, SD](https://openairdocs.org/faa-place/SD/Watertown)
- Owner type: Individual
- Owner's area on the map: 44.9367° N, 97.0928° W: Placed by OpenAirDocs at the center of ZIP code 57201, within about 10 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N402KN
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=402KN
- Page: https://openairdocs.org/deregistered/N402KN-2021-11-10

From the FAA registry file of November 7, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Air Tractor AT-402B: https://openairdocs.org/model/air-tractor-at-402b.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB GAA15CA194](https://openairdocs.org/ntsb/GAA15CA194), Jul 22, 2015: Air Tractor AT 402B (N402KN), Monte Vista, CO, substantial damage. Probable cause: The pilot's failure to maintain directional control during the landing, which resulted in a runway excursion and collision with objects.

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20190727015909I](https://openairdocs.org/incident/20190727015909I), Jul 27, 2019: Air Tractor Inc AT-402B (N402KN), Haverhill, IA, Minor damage. The aircraft had been loaded with agricultural chemical from equipment mounted on a mobile trailer. The pilot had requested fuel and the single point fuel…
- [Accident 20150722012569A](https://openairdocs.org/incident/20150722012569A), Jul 22, 2015: Air Tractor Inc AT-402B (N402KN), Monte Vista, CO, Substantial damage. On 07/22/2015 at approximately 1235 MDT, N402KN an Air tractor model AT-402B airplane was substantially damaged after impacting two parked vehicles at the…

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