EGAN, LA, USA
N6787Q
GRUMMAN G-164A
AS THE PLT WAS ADJUSTING THE POWERPLANT & PROP CONTROLS THE ENG ACCELERATED, & AT THE SAME TIME OIL COVERED THE WINDSHIELD. THE ACFT WENT DOWN INTO A BEAN FIELD & FLIPPED OVER. DISASSEMBLY OF THE ENG REVEALED THE REAR COUNTERWEIGHT TRAILING PIN WORN & GAULDED. THE SLEEVES IN BOTH THE REAR CRANKSHAFT & COUNTERWEIGHT WERE WORN & GAULDED. THE REAR COUNTERWEIGHT LEADING PIN ALSO SHOWED SIGNS OF WEAR & GAULDING SPOTS. ALL PROP BOLTS FAILED IN THE AREA OF THE HEAD.
Source: NTSB Aviation Accident Database
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