Helicopter ground impact during landing approach at LHFM

Casualties unknown • Fertoszentmiklos, CH

A gyroplane experienced a substantial ground impact during its final approach at Fertoszentmiklos, resulting in heavy damage but no injuries.

What happened

On 14 August 2003, a GYR-80-160 (registration HB-DCM) was performing a landing approach at Fertoszentmiklos (LHFM). During the hovering phase of the final glide, the aircraft was positioned too high above the runway. As the aircraft attempted to decelerate, it entered a stall condition, causing it to rebound off the runway surface.

During the subsequent sequence of events, the aircraft skidded across the runway. The aircraft's nose and left wing tip made contact with the ground, leading to a slide on its belly. While there were no injuries to the pilot or the passenger, the impact caused substantial damage to the aircraft, estimated at approximately 75% of its value. The impact was severe enough to detach the nose gear and the left aileron, with further damage sustained by the propeller, fuselage, and wings.

The investigation

The investigation established that the pilot was flying with an expired type rating for this specific aircraft, and had requested the passenger—who held a valid license—to act as the pilot for the flight. During the landing maneuver, the investigation found that the pilot failed to implement necessary corrections following the initial rebound.

As the aircraft lost speed and began to skid, the passenger attempted to intervene by applying full power and taking control of the stick. The investigation examined the sequence of the handover and the aerodynamic state of the aircraft during the skid and subsequent wing strike.

Probable cause

The accident was caused by the pilot's failure to make timely corrections during the landing approach, compounded by a hasty and poorly timed handover of flight controls to the passenger during a critical phase of the maneuver.

Frequently asked questions

What happened in the 2003-08-14 SUD-AVIATION GARDAN GY-80-160 accident near Fertoszentmiklos, CH?

A gyroplane experienced a substantial ground impact during its final approach at Fertoszentmiklos, resulting in heavy damage but no injuries.

What aircraft was involved and where did it happen?

The accident on 2003-08-14 involved a SUD-AVIATION GARDAN GY-80-160, registration HB-DCM, at Fertoszentmiklos, CH.

What was the probable cause of the accident?

The accident was caused by the pilot's failure to make timely corrections during the landing approach, compounded by a hasty and poorly timed handover of flight controls to the passenger during a critical phase of the maneuver.

Investigation report by the Swiss Transportation Safety Investigation Board (STSB / SUST). Original record: https://www.sust.admin.ch/inhalte/AV-berichte/1841.pdf. This page is a structured re-presentation; facts and quotes are in the Swiss Transportation Safety Investigation Board (STSB), Switzerland.

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