NTSB Identification: CHI86FA193.
The docket is stored on NTSB microfiche number 33864.
Accident occurred Friday, August 01, 1986 in FOND DU LAC, WI
Probable Cause Approval Date: 01/25/1988
Aircraft: CAPETOWN BUILDERS GLASAIR RG, registration: N137JM
Injuries: 2 Uninjured.
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.
THE PILOT EXPERIENCED A COMPLETE ELECTRICAL SYSTEM FAILURE THAT WAS CAUSED BY A BROKEN WIRE AT AN ALTERNATOR TERMINAL. UPON EXTENSION OF THE HYDRAULICALLY OPERATED LANDING GEAR A SAFE GEAR DOWN INDICATION WAS NOT OBTAINED. ACTIVATION OF THE CO2 OPERATED EMERGENCY GEAR EXTENSION SYSTEM FAILED TO PROVIDE A SAFE GEAR DOWN INDICATION. THE PILOT WAS UNABLE TO COMMUNICATE WITH ANY FACILITY TO DETERMINE THE POSITION OF THE LANDING GEAR BECAUSE OF THE LOSS OF ELECTRICAL POWER. HE ELECTED TO LAND ON THE GRASS ADJACENT TO THE RUNWAY. THE GEAR WAS DOWN AND UPON TOUCHDOWN, THE NOSE GEAR COLLAPSED WHEN IT DUG INTO THE SOFT TERRAIN. THE AIRCRAFT THEN FLIPPED INVERTED.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ELECTRICAL SYSTEM,ALTERNATOR..FAILURE,TOTAL
The National Transportation Safety Board determines the probable cause(s) of this accident to be:LANDING GEAR,NOSE GEAR..OVERLOAD
The National Transportation Safety Board determines the probable cause(s) of this accident to be:TERRAIN CONDITION..SOFT
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