On May 12, 1989, a Smith MINI DSA-1 (registration N21H) was involved in an aviation accident near Sterling, CT. Investigators recorded the probable cause as: THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE EXPERIMENTAL AIRCRAFT WHILE PERFORMING AEROBATIC MANEUVERS, AND THE AIRCRAFT'S RESULTANT UNCONTROLLED DESCENT INTO THE GROUND. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An aircraft was observed performing aerobatics before impacting the ground in an inverted, nose-down attitude. The pilot had limited recent experience on the specific airframe.
What happened
The accident occurred during a flight phase involving aerobatic maneuvers. Witnesses or surveillance data indicated that the aircraft was actively performing aerobatics immediately prior to the impact with the ground. The final position of the wreckage showed the aircraft in an inverted attitude with the nose pointed downward.
The investigation
A review of the pilot's certification and flight logs provided context regarding experience levels. The records confirmed a total flight time of 600 hours for the individual involved. However, recent currency on the specific accident airframe was notably low. Documentation indicated that this particular aircraft had not been flown for approximately eight and a half years prior to the incident. When it was finally operated again, the logged time on the accident aircraft amounted to only about three hours.
Findings
The combination of aerobatic maneuvering and potentially limited recent experience on the specific airframe contributed to the outcome. The lack of recent flight time on this model may have impacted the pilot's proficiency during complex maneuvers.
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