PRIOR TO FLT THE SPARK PLUGS ON BOTH ENGS WERE REPLACED DUE TO MINOR ENG VIBRATION & THE LANDING GEAR RETRACT SYSTEM WIRING REPAIRED DUE TO THE GEAR NOT RETRACTING ELECTRICALLY ON A PRIOR OCCASION. AFTER TAKEOFF THE GEAR WOULD NOT RETRACT ELECTRICALLY & THE PASSENGER HAD TO CRANK UP THE GEAR MANUALLY. AFTER THE PARACHUTE JUMP THE PLT SHUT DOWN THE LEFT ENG TO ISOLATE THE VIBRATION. HE THEN STARTED THE LEFT ENG & FEATHERED THE RIGHT ENG. UNABLE TO UNFEATHER THE RIGHTENG HE ELECTED TO LAND WITH FULL FLAPS & GEAR DOWN AFTER A STRAIGHT-IN APPROACH. AS HE APPROACHED THE THRESHOLD A C-150 TAXIED ONTO THE RWY. THE PLT EXECUTED A GO-AROUND WHILE TRYING TO RETRACT THE FLAPS & GEAR ELECTRICALLY WITHOUT RESULTS.THE PAX WAS ATTEMPTING TO RETRACT THE GEAR MANUALLY WHEN THE ACFT STRUCK A TREE. THE PLT STATED HE DID NOT MAKE HIS LANDING INTENTIONS KNOWN ON UNICOM DURING THE APPROACH. NO PRE-IMPACT DESCREPANCIES WERE FOUND TO PRECLUDE NORMAL PROP OPERATION. NORMAL ELECT POWER IS HALVED WITH ONE GENERATION INOPERATIVE.

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

ENGINE ASSEMBLY..VIBRATION

Contributing Factors

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

Contributing Factors

PROPELLER SYSTEM/ACCESSORIES,FEATHERING SYSTEM..UNDETERMINED

Contributing Factors

OBJECT..AIRCRAFT MOVING ON GROUND

Contributing Factors

ABORTED LANDING..PERFORMED..PILOT IN COMMAND

Contributing Factors

GO-AROUND..INITIATED..PILOT IN COMMAND

Contributing Factors

ELECTRICAL SYSTEM..OUTPUT LOW

Contributing Factors

GEAR RETRACTION..NOT ATTAINED..PILOT IN COMMAND

Contributing Factors

RAISING OF FLAPS..NOT ATTAINED..PILOT IN COMMAND

Contributing Factors

AIRCRAFT PERFORMANCE,ENGINE OUT CAPABILITY..DETERIORATED

Contributing Factors

AIRSPEED(VMC)..NOT ATTAINED..PILOT IN COMMAND

Index for Aug1982 | Index of months