Casualties unknown

Aerial application aircraft crashes into hill after losing airspeed during turn (N9952J)

Augusta, MT, US

On June 17, 1993, a Cessna T-188C (registration N9952J) operated by Lohse Flying Service was involved in an aviation accident near Augusta, MT. Investigators recorded the probable cause as: The pilot's failure to maintain adequate airspeed during a turn-around maneuver while diverting attention from flight path control, which resulted in an impact with terrain. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-10Data APIEditorial standards

An agricultural aircraft lost airspeed while turning away from rising terrain, leading to a collision with a hillside despite the pilot's attempts to dump the load and apply full power.

What happened

The pilot was conducting an aerial application flight when he initiated a swath run directed toward rising terrain. During this phase of the operation, the pilot began a turn-around maneuver. As he executed this turn, his attention shifted to maintaining visual contact with the spraying area. This diversion of focus contributed to the aircraft losing airspeed.

Upon realizing the loss of speed, the pilot applied full power and attempted to jettison the chemical load to reduce weight. However, he was unable to dump the chemicals before the aircraft impacted a hill.

Probable cause

The pilot's failure to maintain adequate airspeed during a turn-around maneuver while diverting attention from flight path control, which resulted in an impact with terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X12722. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.