Aviation Accident Summary MIA87LA126

MIAMI, FL, USA

Aircraft #1

N506ES

PIPER PA-31-350

Analysis

DURING CLIMB TO CRUISE THE PILOT LOST ONE BLADE OF THE THREE BLADED RIGHT PROPELLER, DUE TO THE FAILURE OF THE HUB. EXAMINATION OF THE PROPELLER AND ENGINE REVEALED THAT THE CRANKSHAFT COUNTERWEIGHT BUSHINGS WERE NOT INSTALLED ALLOWING A HIGH FREQUENCY VIBRATION TO EXIST, CAUSING THE FAILURE OF THE HUB.

 

Source: NTSB Aviation Accident Database

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