No fatalities

24 Jul 2018: Just JA30 SUPERSTOL — Oshkosh, WI

Oshkosh, WI, United States

On 24 Jul 2018, a Just JA30 SUPERSTOL was involved in an aviation accident near Oshkosh, WI. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain adequate airspeed during the initial climb and his exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall. This summary draws on records from NTSB; 4 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A private pilot reported mushy flight controls and sinking after takeoff. Despite adding flaps and adjusting throttle, the airplane descended, hitting a ditch and gravel road. No mechanical anomalies were found.

Accident Summary

During initial climb after takeoff, the private pilot reported leveling out and observing an increase in airspeed. Subsequently, the flight controls became mushy and the airplane began to sink. The pilot added flaps and verified the throttle position, but the airplane continued descending with increasingly mushy controls. The pilot then pushed the nose forward and retracted the flaps. The airplane descended, struck a ditch and a gravel road, and came to rest adjacent to a chain-linked fence.

Damage and Injuries

The accident resulted in both wings being bent downward and partially separated. Both main landing gear collapsed, and the fuselage sustained impact damage. The source does not specify any injuries or fatalities.

Pilot Statement and Investigation

The pilot stated that there were no mechanical failures or malfunctions. A video of the accident corroborated the pilot's account. An examination by the National Transportation Safety Board investigator and Federal Aviation Administration inspectors revealed no mechanical anomalies that would have precluded normal operations.

Contributing factors

Causes

Airspeed — Not attained/maintainedAngle of attack — Not attained/maintainedPilot

Other contributing factors

Contributed to outcome