# N23720: 1981 Air Tractor AT-400, registration cancelled 2018-01-16

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 16, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Air Tractor AT-400](https://openairdocs.org/model/air-tractor-at-400) (registry code 0390202)
- Engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52034)
- Data sheets: [TCDS A9SW](https://openairdocs.org/tcds/A9SW) (OpenAirDocs)
- Serial number: 400-0422
- Year built: 1981
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: December 31, 1981
- Certificate issued: February 8, 2007
- Last registry action: February 16, 2010
- Mode S code: A22538
- Owner when cancelled: [Lux David J](https://openairdocs.org/faa-owner/LUX%20DAVID%20J)
- Location: [Lamoure, ND](https://openairdocs.org/faa-place/ND/Lamoure)
- Owner type: Individual
- Owner's area on the map: 46.3679° N, 98.2938° W: Placed by OpenAirDocs at the center of ZIP code 58458, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N23720
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=23720
- Page: https://openairdocs.org/deregistered/N23720-2018-01-16

From the FAA registry file of October 29, 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-400: https://openairdocs.org/model/air-tractor-at-400.md

## NTSB investigations (2)

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 CEN11LA593](https://openairdocs.org/ntsb/CEN11LA593), Aug 23, 2011: Air Tractor AT-400 (N23720), Monango, ND, substantial damage. Probable cause: The pilot did not maintain adequate separation from a tree during the aerial-application flight.
- [NTSB CHI06CA221](https://openairdocs.org/ntsb/CHI06CA221), Jul 31, 2006: Air Tractor AT-400 (N23720), Springfield, MN, substantial damage. Probable cause: The pilot's inability to maintain directional control of the airplane as a result of the partial failure of the tail wheel assembly. A factor associated with the accident was the crop that the…

## 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.

- [Accident 20110823018369A](https://openairdocs.org/incident/20110823018369A), Aug 23, 2011: Air Tractor Inc AT-400 (N23720), Monago, ND, Destroyed. Pilot was spraying field NE of Monago ndin a "race track" type spray pattern. Sprayed 3 fields going east and west north of 85th st, then was spraying last…
- [Accident 20060731017019A](https://openairdocs.org/incident/20060731017019A), Jul 31, 2006: Airtrc AT400 (N23720), Springfield, MN, Substantial damage. (-23) Aircraft was landing on a Private airstip 7 miles n of Springfield, MN. As the aircraft touched down the pilot believes the tail wheel assembly failed…

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