THE FLT WAS ON A VFR X-COUNTRY AT 9500 FT WITH ATC FLT FOLLOWING.THE NON-INSTRUMENT RATED PLT ADVISED ATC THAT HE WAS UNABLE TO MAINTAIN VFR & CLIMBED TO 11,000 FT. HE AGAIN AVISED HE WAS UNABLE TO MAINTAIN VFR & WAS GOING TO DESCEND. THE ACFT WAS OBSERVED BY ATC TO ENTER A LEFT TURN FROM SSE THROUGH NORTH THROUGH WEST, WHERE IT DISAPPEARED FROM THE RADAR SCOPE. A PLT WITNESS ON THE GROUND HEARD THE ACFT IN THE CLOUDS AS ENGINE POWER WAS INCREASED & DECREASED, THEN OBSERVED THE ACFT EMERGE FROM THE CLOUD BASE IN A SPIN WITH A PORTION OF THE RIGHT WING MISSING. THE ACFT CRASHED INTO A SWAMP KILLING ALL 3 OCCUPANTS.ON THE PREVIOUS DAY, A MECHANIC HAD ADVISED THE PLT THAT THE ENGINE DRIVEN VACCUM PUMP WAS INOP. THE ATTITUDE INDICATOR & HEADING INDICATOR ARE VACCUM POWERED. THE GROUND WITNESS STATED THAT AT THE TIME OF THE ACCIDENT, IT WAS VFR AT GROUND LEVEL WITH THE CLOUD BASE ESTIMATED AT 2000 FT & VISIBILITY AT LEAST 5 MI.

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

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

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

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

Contributing Factors

WEATHER CONDITION..CLOUDS

Contributing Factors

FLIGHT/NAV INSTRUMENTS,ATTITUDE INDICATOR..INOPERATIVE

Contributing Factors

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..INTENTIONAL..PILOT IN COMMAND

Contributing Factors

IN-FLIGHT PLANNING/DECISION..POOR..PILOT IN COMMAND

Contributing Factors

VFR FLIGHT INTO IMC..CONTINUED..PILOT IN COMMAND

Contributing Factors

FLIGHT/NAV INSTRUMENTS,HEADING INDICATOR..INOPERATIVE

Contributing Factors

VACUUM SYSTEM..INOPERATIVE

Index for Nov1985 | Index of months