Aviation Accident Summary MIA88LA183

GRETNA, FL, USA

Aircraft #1

N4029R

HILLER UH-12E

Analysis

WHILE ON AN AERIAL APPLICATION FLT, THE PLT STATED HE MANEUVERED THE HELICOPTER TO RELEASE THE REMAINING CHEMICAL. HE THEN HEARD A LOUD 'SCREECHING' NOISE FOLLOWED BY SILENCE AS THE ENG QUIT. THE HELICOPTER LANDED HARD BREAKING THE SKIDS. IT CAME TO REST ON ITS RIGHT SIDE. POST CRASH INSPECTION OF THE ENGINE REVEALED THE NO. 2 CYLINDER PARTIALLY SEPARATED AND THE NO. 3 CYLINDER CONNECTING ROD FAILED AT THE SHOULDER NEAR THE CRANKSHAFT JOURNAL DUE TO FATIGUE.

 

Source: NTSB Aviation Accident Database

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