NTSB Identification: MIA85LA083.
The docket is stored on NTSB microfiche number 28458.
Nonscheduled 14 CFR
Accident occurred Friday, January 18, 1985 in LOIZA
Aircraft: BELL 206L-1, registration: N5736K
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.

THE HELICOPTER PLT HAD JUST DISCHARGED HIS PASSENGERS FOLLOWING A FLT FROM AN OFF-SHORE BARGE TO A BEACH HELIPORT. WHEN HE LIFTED OFF & STARTED TO CROSS OVER A FENCE, THE ENG LOST PARTIAL POWER. THE PLT TRIED TO AVOID THE OBSTRUCTION, BUT THE TAIL BOOM HIT THE FENCE & FAILED. THE ACFT THEN HIT THE GROUND & ROLLED OVER. AN ENG TEARDOWN REVEALED THAT THE COMPRESSOR MOUNT ASSEMBLY, P/N 6898611, HAD FAILED FROM FATIGUE AT 3 PAD POSITIONS. THERE WAS EVIDENCE THAT THE COMPRESSOR SPLINE ADAPTER THEN FAILED DUE TO MISALIGNMENT. A REVIEW OF THE MAINTENANCE RECORDS SHOWED THAT A MANDATORY INSPECTION OF THE COMPRESSOR MOUNTS WAS OVERDUE.

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

COMPRESSOR ASSEMBLY,CASTING..FATIGUE


Contributing Factors

OBJECT..FENCE


Contributing Factors

MAINTENANCE,INSPECTION..INADEQUATE..COMPANY MAINTENANCE PERSONNEL

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