GARLAND, TX, USA
N7RA
BEECH A60
THE PLANE HAD BEEN INVOLVED IN A BANKRUPCY SETTLEMENT AND HAD NOT BEEN FLOWN FOR ABOUT 3 1/2 MTHS. THE PILOT HAD BEEN SENT TO FERRY THE PLANE. DURING A RUN-UP BEFORE TAKEOFF, THE PROPELLERS MOVED TOWARD A FEATHER POSITION WITHOUT PILOT INPUT. THE PILOT HAD A MECHANIC SERVICE THE PROPS. A SUBSEQUENT RUN-UP WAS NORMAL, SO THE PILOT TOOK OFF. ABOUT TWO MINUTES AFTER LEVELING AT 1800 FT, THE LEFT PROP STARTED FEATHERING AGAIN WITHOUT PILOT INPUT AND THE LEFT ENGINE LOST POWER. A SHORT TIME LATER, THE RIGHT ENGINE BEGAN LOSING POWER. AN EMERGENCY LANDING WAS MADE ON A CLOSED AIRPORT; HOWEVER, THE GEAR STRUCK ROCKS AND DEBRIS THAT WERE NOT VISIBLE IN AN AREA OF GRASS. AN INVESTIGAITON REVEALED THE ENGINE OIL HAD NOT BEEN CHANGED SINCE 7/20/81. THE PROP GOVERNOR SCREENS WERE FOUND WITH ABOUT 70 TO 80% BLOCKAGE WITH A CARBON BUILD-UP. AN OIL ANALYSIS REVEALED A HIGH ALUMINUM CONTENT. THE LAB REPORT STATEDTHAT THIS MAY BE FROM BREAK-IN, RECENT MAINTENANCE, ABNORMAL WEAR, OR OVER EXTENDED OIL DRAIN. LAST ANNUAL DATED 4/2/81.
Source: NTSB Aviation Accident Database
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