Casualties unknown

1982-07-19: Aeronca 7AC (N85580) — Ralph M. Jungbluth — Pine Valley Tow, WI

Pine Valley Tow, WI, US

On July 19, 1982, an Aeronca 7AC (registration N85580) operated by Ralph M. Jungbluth was involved in an aviation accident near Pine Valley Tow, WI. Investigators recorded the probable cause as: The pilot's failure to maintain control during a low-altitude turn, which resulted in a steep descent and collision with trees. 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 1781061362Data APIEditorial standards

An aircraft was observed flying at low altitude over a wooded area before entering an uncontrolled left turn, resulting in a steep descent and impact with trees near an open field.

What happened

The aircraft was initially observed maintaining a low altitude while approaching a point approximately one-quarter mile northeast of the town center. The flight path took the plane directly over a wooded area. As the aircraft reached this location, it initiated a turn to the left.

During the execution of this maneuver, the bank angle continued to increase beyond normal parameters. Subsequently, the nose of the aircraft dropped significantly, causing the aircraft to descend steeply into the tree canopy. Emergency responders and police arrived at the accident site shortly thereafter. While on scene, officers noted the presence of numerous deer in the surrounding woods. The wreckage was located approximately 300 feet north of an open field adjacent to the crash site.

The investigation

The investigation focused on the physical evidence recovered from the wooded impact area and the flight path leading up to the collision. Investigators examined the structural damage sustained by the aircraft during the steep descent and final impact with the trees. The proximity of the wreckage to the open field was documented to help reconstruct the final moments of flight.

Findings

The primary factor contributing to the accident was the loss of control during a low-altitude maneuver. The continued increase in bank angle followed by a nose drop indicates a departure from controlled flight, leading directly into the terrain. The lack of available recovery altitude due to the low initial flight level prevented any potential recovery before impact.

Probable cause

The pilot's failure to maintain control during a low-altitude turn, which resulted in a steep descent and collision with trees.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20020917X03077. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.