- Date
- December 13, 2025, 10:21 local (18:21 UTC)
- Place
- Carson City, NV
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N817DPorto Risen SV
- Defining event
- Landing-flare/touchdown: Landing gear not configured
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 13, 2026
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Western Pacific Region
- Parties
- FAA
- FAA report
- 20251213020019I
- Case key
- 202158
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot's failure to extend the landing gear prior to landing.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
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.
Aircraft
- Registration
- N817D
- Reported as
- Porto Risen SV
- Category
- Airplane, amateur-built
- Serial number
- 46
- Built
- 2025
- Airframe hours
- 58
- Engine
- Rotax 916 IS, 160 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Flight test · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Unknown · May 23, 2025 · 58 hours before
- Departed
- KCXP · Carson City, NV
- Destination
- KCXP · Carson City, NV
- Airport
- CXP · Carson City, runway 09/27, 6,101 × 75 ft, asphalt
- Equipment
- Airframe parachute, Angle of attack indicator, Auto-pilot, Data recorder, Electronic flight bag or handheld device, Electronic multifunction display, Electronic primary flight display, Stall warning system, Onboard weather, ADS-B
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 65
- Injuries
- None
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, With waivers/limitations
- Last flight review
- March 31, 2025
- Seat
- Left
- Restraint
- 4-point
- Flight hours
- 3,877 total · 59 in this make and model · 3,790 as pilot in command
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 41 °F, dew point 21 °F
- Altimeter
- 30.41 inHg
- Observed at
- KCXP, 1 nm away
- METAR
- METAR KCXP 131835Z AUTO 00000KT 10SM CLR 05/M06 A3028 RMK AO2
Docket · 2
The files NTSB released with the investigation on March 13, 2026, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.2 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.