What was found
FOUND UPPER BULKHEADS CRACKED AT TOP OF RUDDER PEDAL TORQUE TUBE OPENING JUST AFT OF MOUNTING BOLT FOR PN 2460004-1 BELLCRANK ASSY. LT SIDE CRACKED COMPLETELY THROUGH. RT SIDE ALSO DAMAGED DUE TO BOLT HEAD ON THE BELLCRANK HITTING IT. FOUND UPPER BULKHEADS, PN 2413001-5 & PN 2413001-8, & LOWER BULKHEADS, PN 2413001-3 & PN 2413001-4, CRACKED AT AFT BOLT HOLE FOR PN 20670011-1 RUDDER TORQUE TUBE BEARING ASSYS. LT BULKHEADS WERE FOUND IN WORSE CONDITION THAN RT. ACFT HAS HAD 1 LANDING WHERE NOSE GEAR FOLDED & IS USED FOR FLT TRAINING. RECOMMEND THOROUGH INSP OF AREA EVERY 100 HRS. UPPER BULKHEADS NEED TO BE REINFORCED AT TOP EDGE OF OPENING & STRONGER MTNG FOR RUDDER BEARING BLKS NEEDS TO BE DEVELOPED.