NTSB CAROL · Event
Event LAX95LA196
Aircraft involved
Probable cause & findings
the pilot's failure to properly connect the aileron/flaperon quick disconnect fitting during assembly of the glider, and his inadequate preflight inspection.
Factual narrative
On May 27, 1995, at 1230 Pacific daylight time, a Rolladen- Schneider LS-6 glider, N64UW, collided with the ground following a loss of control during the takeoff initial climb at the Montague-Yreka Rohrer Field, Montague, California. The glider was owned and operated by the pilot and was beginning a local area personal flight. Visual meteorological conditions prevailed at the time and included calm wind conditions. No flight plan was filed. The glider sustained substantial damage. The certificated commercial pilot, the sole occupant, incurred serious injuries. Ground witnesses observed the accident sequence and reported that the glider was being towed aloft by a tow plane. The witnesses said the tow plane lifted off normally; however, the glider did not seem to lift off in a normal manner. As the glider achieved about 50 feet agl, the pilot released the tow line. The glider then banked slightly to the left, then rolled to the right. The right roll continued until the glider was at a very steep bank angle and entered a spiral, which continued to ground impact. According to the witnesses, no one saw the pilot perform a control continuity check after assembly of the glider prior to takeoff. A Federal Aviation Administration (FAA) airworthiness inspector from the Sacramento, California, Flight Standards District Office responded to the accident site and examined the glider. He reported that the glider is equipped with quick disconnect fittings on the control system push/pull tubes in the wing center section. The fittings allow the control system to be disconnected and reconnected as the wings are removed or installed. The right aileron/flaperon fitting was found disconnected. GROUND WITNESSES OBSERVED THE ACCIDENT SEQUENCE AND REPORTED THAT THE GLIDER WAS BEING TOWED ALOFT BY A TOW PLANE. THE WITNESSES SAID THE TOW PLANE LIFTED OFF NORMALLY; HOWEVER, THE GLIDER DID NOT SEEM TO LIFT OFF IN A NORMAL MANNER. AS THE GLIDER ACHIEVED ABOUT 50 FEET AGL, THE PILOT RELEASED THE TOW LINE. THE GLIDER THEN BANKED SLIGHTLY TO THE LEFT, THEN ROLLED TO THE RIGHT. THE RIGHT ROLL CONTINUED UNTIL THE GLIDER WAS AT A VERY STEEP BANK ANGLE AND ENTERED A SPIRAL, WHICH CONTINUED TO GROUND IMPACT. ACCORDING TO THE WITNESSES, NO ONE SAW THE PILOT PERFORM A CONTROL CONTINUITY CHECK AFTER ASSEMBLY OF THE GLIDER PRIOR TO TAKEOFF. A FAA AIRWORTHINESS INSPECTOR RESPONDED TO THE ACCIDENT SITE AND EXAMINED THE GLIDER. HE REPORTED THAT THE GLIDER IS EQUIPPED WITH QUICK DISCONNECT FITTINGS ON THE CONTROL SYSTEM PUSH/PULL TUBES IN THE WING CENTER SECTION. THE FITTINGS ALLOW THE CONTROL SYSTEM TO BE DISCONNECTED AND RECONNECTED AS THE WINGS ARE REMOVED OR INSTALLED. THE RIGHT AILERON/FLAPERON FITTING WAS FOUND DISCONNECTED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1995_LAX95LA196.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Semantic Scholar 2016 · Article (Interacción)
Trajectory Recovery System: Angle of Attack Guidance for Inflight Loss of Control
This paper describes the design and development of an ecological display to aid pilots in the recovery of an In-Flight Loss of Control event due to a Stall (ILOC-S).
- NTSB Aircraft Accident Reports 2010 · Accident report
Loss of Control on Approach — Colgan Air Flight 3407
Colgan Air 3407 / Continental Connection (Q400) Buffalo NY, February 12, 2009 — 50 fatalities. Definitive investigation of the Colgan 3407 stall-stick-pusher crash on approach to Buffalo.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- arXiv 2025 · arXiv preprint
Quadratic Programming Approach to Flight Envelope Protection Using Control Barrier Functions
Ensuring the safe operation of aerospace systems within their prescribed flight envelope is a fundamental requirement for modern flight control systems.
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
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