NTSB Identification: LAX83LUQ03.
The docket is stored on NTSB microfiche number 22250.
Accident occurred Saturday, June 18, 1983 in SANTA MARIA, CA
Aircraft: MAREIK-BENSEN B-8M, registration: N7045
Injuries: 1 Fatal.

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 GRYOPLANE WAS OBSERVED TO DEPART FROM CONTROLLED FLT AT OR BELOW 800 FT AGL & THE PLT BECAME SEPARATED FROM THE ACFT. BOTH IMPACTED THE GROUND IN A NEAR VERTICAL DESCENT ABOUT 40 FT APART. THE PLT'S BLOOD ALCOHOL CONTENT WAS 0.13%. THE CLASP ENDS OF THE SEAT BELT STRAPS WERE OPEN. BOTH WEBBINGS OF THE TWO STRAPS WERE IMPREGNATED WITH GREASE & FOREIGNMATERIAL. THE METAL CLASP 'GRIPS' WERE ROUNDED OFF & THE GROOVES BETWEEN THEM CONTAINED FOREIGN MATERIAL. THE LEFT STRAPSTICHING ON THE UPPER EDGE OF THE STRAP WAS WORN & DETERIORATED ALONG A LENGTH OF 6 INCHES IN THE AREA WHERE THE METAL CLASP WOULD NORMALLY BE CLASPED WHEN AROUND AN OCCUPANT. AFTER THE ACCIDENT THE SEAT BELTS WERE CLASPED TOGETHER & SEVERAL HARD TUGS WITH ONE HAND WAS SUFFICIENT TO CAUSE THE SEAT BELT TO COME OPEN. THIS PROCEDURE WAS TESTED SIX TIMES WITH THE SAME RESULTS.

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

FLIGHT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND

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

MISC EQPT/FURNISHINGS,SEAT BELT..DETERIORATED

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

MISC EQPT/FURNISHINGS,SEAT BELT..INADEQUATE

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

IMPAIRMENT(ALCOHOL)..PILOT IN COMMAND

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

MISC EQPT/FURNISHINGS,SEAT BELT..DISCONNECTED

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