What was found
PRESSURE PLATE (PN 65101-11016-041) FOUND CRACKED. MAIN ROTOR HEAD (MRH) REMOVED FROM SERVICE DUE TO SEVERE STORM DAMAGE WITH A TT 3772.9 AND A TSO 754. DURING OVERHAUL OF MRH, A CRACK INDICATION WAS DETECTED IN PRESSURE PLATE (PN 65101-11016-041) DURING FLUORESCENT PENETRANT INSP. CRACK LOCATED ON EAR/LUG STARTING AT THE INTERSECTION OF .120 INCH AND .060 INCH RADIUS TRANSITION APPROXIMATELY .300 INCH IN LENGTH. PROBABLE CAUSE: SHARP RADIUS IN AN AREA WHERE THREE RADII INTERSECT. RECOMMENDATIONS TO PREVENT RECURRENCE: HOLD RADIUS DIMENSIONS TO HIGH END OF TOLERANCE. REWORK TO APPROVED REPAIR PROCEDURE WHICH HAS BEEN ESTABLISHED.