West Columbia, SC, USA
N8493A
CESSNA 402B
THE AIRPLANE USED ABOUT 1/2 OF THE 8,602 FT RWY FOR THE T/O ROLL. AFTER T/O IT PITCHED NOSE-DOWN BRIEFLY OVER THE RWY DURING INIT CLIMB. THE PLT RADIOED THAT HE WAS HAVING A PROBLEM WITH THE ELEVATOR WHICH REQUIRED 'FULL BACK PRESSURE' TO KEEP THE NOSE UP, AND THAT HE WAS RETURNING TO LAND. AFTER MANEUVERING AROUND THE ARPT, THE ACFT PITCHED 70-80 DEG NOSE DN AND DOVE INTO TERRAIN OFF THE APPCH END OF THE RWY. THE WRECKAGE EXAM REVEALED THAT THE BOLT SECURING THE ELEVATOR TRIM TAB PUSHROD TO THE ACTUATOR WAS MISSING. THE ROD HAD BECOME WEDGED INSIDE THE ELEVATOR WHICH RESULTED IN AN EXTREME TAB UP (NOSE DN) CONDITION. THE ACFT UNDERWENT AN ANNUAL INSP 2 DAYS/5 FLT HRS EARLIER. THE IA MECH RPTD THAT NO MAINT WAS PERFORMED ON THE TAB SYS, AND THAT HE WAS CERTAIN THE BOLT WAS PROPERLY SAFETIED. ANOTHER PLT WHO FLEW THE ACFT THE DAY OF THE ACCIDENT RPTD THAT HE FOUND THE PUSHROD TO BE SECURE DURING HIS PREFLT INSP. THE 402B POH INDICATED THAT THE ACFT SHOULD HAVE REQ ABOUT 1,200 FT FOR THE T/O GROUND ROLL.
Source: NTSB Aviation Accident Database
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