What was found
DURING FLIGHT, RT ALTERNATOR QUIT. INSTALLED OVERHAULED UNIT, ELECTRICAL SYSTEM OPERATED NORMALLY. SENT ALTERNATOR TO OVERHAUL SHOP AND HAD THEM RUN IT FIRST. THEY SAID UNIT WORKED OK. TOLD THEM TO OVERHAUL IT. HAVE NOT HAD ALTERNATOR PROBLEM SINCE. SUBMITTER STATED, NORMALLY, THIS MODEL ALTERNATOR WILL NOT GO 1,000 HOURS.