What was found
DURING INSPECTION/REPAIR FOR LOW POWER, FOUND SEAL PLATE CRACKED. SB 72-0840 AUTHORIZES INSTALLATION OF THIS PART TO INCREASE SEAL PLATE TENISON AGAINST FIRST STAGE ROTOR ASSEMBLY. INCREASED TENSION OF THE SEAL FLANGE RESULTS IN CRACKING AT THE EDGE PROPOGATING RADIALLY INWARD. SUBMITTER SUGGESTS ENGINEERING REVIEW CAUSE/EFFECT. NOTE: THIS IS A CRITICAL LIFE-LIMITED COMPONENT. LIFE LIMIT IS 20,000 CYCLES. THIS IS THE EIGHTH SEAL FOUND CRACKED. TOTAL CYCLES, 7,221.