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April 13, 2026 · Alexander Schleicher Gmbh & ASH 31 MI · N77UK

Williams, CA

Overview

Report Status
Factual report
Event Type
Accident
Date
April 13, 2026
Injury Outcomes
1 injury (1 minor injury)
Location
Williams, CA
Aircraft
Alexander Schleicher Gmbh & ASH 31 MI (2013)
Tail Number
N77UK
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR26LA158

On April 13, 2026, about 1051 Pacific standard time, an experimental Alexander Schleicher GMBH and Co., Ash 31 Mi Glider, N77UK, was substantially damaged when it was involved in an accident near Williams, California. The pilot sustained minor injuries. The glider was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that he departed from Williams Gliderport (CN12), Williams, California, in the self-launching motorglider. During climbout, about 200 ft above ground level, the engine lost power. The pilot verified that the emergency fuel pump was on and then reviewed his landing options. There were power lines straight ahead, so he opted to perform a right turn back to the runway. However, during the turn, the right wingtip struck terrain. Subsequently, the glider’s nose and main gear impacted a plowed field and resulted in substantial damage to the fuselage and wings. Witnesses located at the airport reported observing the glider depart uneventfully until it passed behind a hangar and was no longer visible. Shortly thereafter, the witnesses observed the glider again in a steep right turn. The glider was recovered for further examination.

Full Narrative

On April 13, 2026, about 1051 Pacific standard time, an experimental Alexander Schleicher GMBH and Co., Ash 31 Mi Glider, N77UK, was substantially damaged when it was involved in an accident near Williams, California. The pilot sustained minor injuries. The glider was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that he departed from Williams Gliderport (CN12), Williams, California, in the self-launching motorglider. During climbout, about 200 ft above ground level, the engine lost power. The pilot verified that the emergency fuel pump was on and then reviewed his landing options. There were power lines straight ahead, so he opted to perform a right turn back to the runway. However, during the turn, the right wingtip struck terrain. Subsequently, the glider’s nose and main gear impacted a plowed field and resulted in substantial damage to the fuselage and wings. Witnesses located at the airport reported observing the glider depart uneventfully until it passed behind a hangar and was no longer visible. Shortly thereafter, the witnesses observed the glider again in a steep right turn. The glider was recovered for further examination.

Flight

Event TypeAccident
Event Time10:51 PDT
Nearest AirportWilliams Gliderport (1nm NNW)
Runway34
Runway Length2500 ft
Runway Width40 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftAlexander Schleicher Gmbh & ASH 31 MI
Tail NumberN77UK
Aircraft CategoryGli
DamageSubstantial
Operating RulePart 91
Engines1
Seats1

People & Injuries

Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1

Conditions

ConditionsVMC
LightDaylight
Wind350° @ 9 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point61 F / 46 F
Altimeter30.11 inHg
Observation Time11:00
Weather SourceWFAC

Appendix: Source Data