What was found
DURING A 100-HOUR INSPECTION, FOUND THE FORWARD BATTERY HOLD-DOWN BRACKET PN G10110 AND THE AFT BATTERY HOLD-DOWN BRACKET PN G10115 WERE BADLY WORN AT THE SLOTS THAT HOLD THE BATTERY IN PLACE. THERE ARE 3 AIRCRAFT WITH THE SAME STC INSTALLING THE BATTERY IN THE TAIL BOOM AND ALL SHOW THE SAME PROBLEM WITH THE BRACKET WEAR. WHEN ORDERING REPLACEMENT BRACKETS, THE HOLES DO NOT MATCH THE ATTACH POINTS IN THE AIRCRAFT. EVEN THROUGH ALL AIRCRAFT HAVE THE SAME STC, AEC SAYS THERE ARE AT LEAST 2 CHANGES TO THE DRAWINGS AND THAT THEY ARE WORKING ON THE PROBLEM OF HOW TO FIGURE OUT WHAT PART GOES TO WHAT CHANGE IN AIRCRAFT. TT: 2,571.3 HOURS. (X)