NTSB Identification: CHI83FA086.
The docket is stored on NTSB microfiche number 22892.
Nonscheduled 14 CFR
Accident occurred Wednesday, January 19, 1983 in MONROE, WI
Aircraft: PIPER PA-32-300, registration: N5818F
Injuries: 1 Minor.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

WHILE CRUISING AT 4,000 FT MSL THE ENG QUIT. DURING A FORCED LANDING ON ROLLING FARM TERRAIN BOTH MAIN LANDING GEAR SEPARATED. THE ACFT THEN SLID THROUGH A BARBED WIRE FENCE & CAUGHT FIRE. METALLURGICAL EXAMINATION REVEALED A FATIGUE FAILURE OF THE IDLE SET SCREW THAT CONTROLS THE DIAPHRAM SETTING IN THE BENDIX FUEL INJECTION (P/N 2424273-10). THE STEMOF THE SCREW FAILED AS A RESULT OF REVERSED BENDING STRESSES CAUSED BY SIDE TO SIDE FORCES. THIS TYPE OF FAILURE COULD NOT BE EXPLAINED AS THE PRINCIPAL FORCE APPLIED TO THE ADJUSTMENT SCREW WOULD PRIMARILY BE IN A TWISTING MOTION RATHER THAN A SIDE TO SIDE APPLIED FORCE.

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

FUEL SYSTEM,FUEL CONTROL..FATIGUE

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

FLUID,FUEL..STARVATION


Contributing Factors

LIGHT CONDITION..DARK NIGHT



Contributing Factors

OBJECT..FENCE


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN

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