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Thu, Aug 29, 2024

NTSB Final Report: Pipistrel Italia S R L Sinus 912 LSA

Accident Site Showed Evidence Of A Low-Energy Impact, Consistent With A Low-Altitude Stall

Location: Waller, Texas Accident Number: CEN22FA416
Date & Time: September 12, 2022, 14:18 Local Registration: N397R
Aircraft: Pipistrel Italia S R L Sinus 912 LSA Aircraft Damage: Substantial
Defining Event: Loss of control in flight Injuries: 1 Fatal, 1 Serious
Flight Conducted Under: Part 91: General aviation - Personal

Analysis: After an uneventful flight, the powered glider approached the grass airstrip to land. The passenger stated that the altitude seemed to be low during the approach. He stated that as the pilot started to turn the glider, the passenger felt that they were not going to land safely, and yelled to the pilot, “we are not going to make this.” The powered glider dropped down and seemed to stall. The passenger heard the engine rev up, and the powered glider collided with the ground.

Examination of the accident site showed evidence of a low-energy impact, consistent with a low-altitude stall. Examination of the airframe and flight controls did not reveal any mechanical anomalies that would have precluded normal operations. Physical examination of the engine and downloaded engine data were consistent with normal engine operation.

Cannabis was detected in the toxicology testing of the pilot; however, since no THC or active THC metabolite was detected, it is unlikely that the pilot’s use of cannabis was recent enough to have contributed to the accident. The autopsy on the pilot revealed moderate to severe atherosclerosis of the pilot’s cerebral arteries, coronary arteries, and aorta, as well as chronic kidney and lung conditions. It could not be determined whether these conditions contributed to the accident. The passenger did not report any indications that the pilot was impaired or incapacitated.

Based on all available evidence, it is likely that the pilot attempted to extend the glide to the runway during the base turn to final, which resulted in an aerodynamic stall. 

Probable Cause and Findings: The National Transportation Safety Board determines the probable cause(s) of this accident to be -- The pilot’s failure to maintain aircraft control, which led to an aerodynamic stall at an altitude where recovery was not possible.

FMI: www.ntsb.gov

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