NTSB Identification: MIA88LA183.
The docket is stored on NTSB microfiche number 36380.
Accident occurred Tuesday, May 31, 1988 in GRETNA, FL
Probable Cause Approval Date: 06/09/1989
Aircraft: HILLER UH-12E, registration: N4029R
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

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.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY,CONNECTING ROD..FAILURE,TOTAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY,CYLINDER..SEPARATION


Contributing Factors

AUTOROTATION..NOT POSSIBLE

Index for May1988 | Index of months