Aviation Accident Summaries

Aviation Accident Summary FTW93FA002

WIMBERLEY, TX, USA

Aircraft #1

N41KC

CLATANOFF ROTORWAY EXEC

Analysis

A PILOT WAS IN CRUISE FLIGHT IN HIS HOMEBUILT HELICOPTER WHEN AN INFLIGHT BREAKUP WAS INITIATED BY THE SKIN DELAMINATION OF ONE OF HIS MAIN ROTOR BLADES. THE DYNAMIC IMBALANCE AND DIVERGENT FLAPPING OF HIS ROTOR SYSTEM CAUSED THE MAIN ROTOR BLADES TO STRIKE THE TAILBOOM AND PORTIONS OF THE AIRFRAME. WITNESSES REPORTED AN EXPLOSION AND INFLIGHT FIRE PRIOR TO THE UNCONTROLLED DESCENT TO THE GROUND. THE WRECKAGE WAS DISPERSED FOR 750 YARDS.

Probable Cause and Findings

THE DELAMINATION OF THE SKIN ON A MAIN ROTOR BLADE.

 

Source: NTSB Aviation Accident Database

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