What aircraft was involved and where did it happen?

The accident on 2007-07-26 involved a Ventus 2A, registration D-2615, at Località Quart (AO), IT.

What was the probable cause of the accident?

The accident was caused by a loss of control resulting from an aerodynamic stall during a low-speed maneuver intended to gain altitude in an area lacking sufficient rising air currents.

Glider Stall Leads to Fatal Crash in Aosta Valley

A single-engine glider crashed into a steep mountainside in the Italian Alps, resulting in the death of the pilot after an attempt to regain altitude failed.

What happened

On July 26, 2007, a Ventus 2A glider, registration D-2615, departed from Fayence Airport in southern France for a local recreational flight. After approximately one hour of flight, the pilot lost radio contact with French air traffic control. Following the aircraft's failure to return, search operations were initiated.

Two days later, a Civil Protection helicopter located the wreckage on a rugged mountain slope in the Quart municipality, near Aosta, Italy, at an altitude of approximately 2,370 meters. The pilot, a 53-year-old German national with approximately 1,600 flight hours, was found deceased in the cockpit. The aircraft sustained extensive structural damage.

The investigation

The ANSV investigation reconstructed the flight path using data from an onboard GPS data logger. The records indicate that at 13:16 UTC, the glider was descending at 2,820 meters, flying near the northern ridges of the Aosta Valley. The pilot was actively searching for thermal updrafts to regain altitude.

Investigators examined the wreckage and identified a significant impact crater on a steep slope. The debris pattern showed that the glider struck the northern face of a mountain fissure head-on. The impact was followed by a slide where the right wing struck a large boulder, causing the wing to detach from the fuselage. The investigation also analyzed local meteorological conditions, noting that while the day was sunny, the complex terrain could generate localized downdrafts or mechanical turbulence.

Findings

The investigation determined that the pilot attempted to fly toward the north face of the mountain to intercept rising air currents.
To gain altitude, the pilot likely attempted a maneuver involving a turn toward a depression in the terrain, but the aircraft was flying at a very low altitude.
The aerodynamic stall of the glider occurred during a low-speed maneuver intended to increase altitude in the absence of sufficient thermal lift.
The proximity to the terrain left no margin for recovery once the stall was initiated.
While the investigation could not rule out a sudden medical emergency due to the lack of an autopsy, the primary cause was identified as the loss of control following the stall.