Landing gear not configured: Porto Risen, N817D, accident occurred on December 13, 2025, at Carson City Airport (CXP/KCXP), Carson City, Nevada

• Location: Carson City, Nevada 
• Accident Number: WPR26LA057 
• Date & Time: December 13, 2025, 10:21 Local 
• Registration: N817D 
• Aircraft: Porto Risen SV 
• Aircraft Damage: Substantial 
• Defining Event: Landing gear not configured 
• Injuries: 1 None 
• Flight Conducted Under: Part 91: General aviation - Flight test

https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/202158/pdf

https://data.ntsb.gov/Docket?ProjectID=202158

The pilot was conducting a maintenance test flight and had conducted several landings, all of which were uneventful. During the final approach to land, he thought he had lowered the landing gear but did not confirm whether the gear-down advisory lights were illuminated. He subsequently landed the airplane with the landing gear retracted, which resulted in substantial damage to the lower fuselage composite structure.

The pilot reported no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot added that the LED gear-down advisory lights were not very bright and that sunlight made them difficult to see.

- Probable Cause: The pilot's failure to extend the landing gear prior to landing.