What was found
PILOT REPORTED RUDDER AND TRIM STIFFNESS. EXAMINATION FOUND BULKHEADS IN LOWER FORWARD FUSELAGE SECTION, PN 2413001-3, 2413001-4, 2413001-5, 2413001-6, CRACKED. THESE CRACKS ARE BELOW CENTER RUDDER TORQUE TUBE BEARINGS AFT ATTACH POINTS. SUBMITTER STATED THIS CONDITION FOUND ON SIX OTHER AIRCRAFT.