LAK-12 Glider Crash Caused by Debris on Landing Site

Casualties unknown • LT

A LAK-12 glider sustained structural damage after debris from a mown field was blown into its control surfaces during a retrieval takeoff.

What happened

On June 13, 1995, during the Lithuanian Open Gliding Championships at Panevėžys Aerodrome, a LAK-12 glider, registration LY-GDI, experienced an accident following an initial forced landing. The glider, being operated by a solo pilot, had previously landed near the village of Krekenava due to a thermal crisis encountered during a flight pattern between Panevėžys and Ramygala.

To recover the aircraft, a Vilga-35A powered aircraft, registration LY-AJP, arrived at the site to perform a winch-style retrieval. After the glider was attached to the powered aircraft at an altitude of approximately 15 meters, the flight began. However, after flying roughly 400 meters, the glider began to veer sharply to the right. Unable to maintain control, the pilot released the tow line. The glider continued to fly for another 250 meters before striking the ground with its right wing and subsequently spinning into the earth. The pilot was uninjured, but the aircraft sustained 10 structural fractures.

The investigation

The investigation focused on the conditions of the retrieval site and the mechanics of the flight deviation. Investigators examined the state of the field where the glider had landed and the impact of the propeller wash from the towing aircraft during the takeoff phase.

Probable cause

The accident was caused by the tow aircraft's propeller wash blowing loose hay from a recently mown field onto the right aileron zone of the glider, which disrupted aerodynamic control and induced a rightward veer.

Frequently asked questions

What happened in the 1995-06-13 LAK-12 accident near LT?

A LAK-12 glider sustained structural damage after debris from a mown field was blown into its control surfaces during a retrieval takeoff.

What aircraft was involved and where did it happen?

The accident on 1995-06-13 involved a LAK-12, registration LY-GDI, at LT.

What was the probable cause of the accident?

The accident was caused by the tow aircraft's propeller wash blowing loose hay from a recently mown field onto the right aileron zone of the glider, which disrupted aerodynamic control and induced a rightward veer.

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