What was found
REPLACEMENT OF SHIELDS IN FWD AILERON CROSS. TO REPLACE CORRODED AND CRACKED SHIELDS IN THE FORWARD AILERON CROSS COMPARTMENT. SIX STRINGER TO FUSELAGE SHIELDS WERE FOUND DAMAGED IN THE FWD AILERON CROSS COMPARTMENT. ONE WAS BADLY CORRODED, ONE WAS SEVERELY CRACKED AND 4 OF THEM HAD CRACKS. THE 4 CRACKED ONES WILL BE STOP DRILLED AND REINSPECTED EVERY C CHECKS. THE OTHER 2 ARE BEING REPLACED. THE STOP DRILLED SHIELDS WILL BE RE-INSPECTED EVER C CHECKS. SHIELDS ARE PRESSURIZATION SEALS. SEE ACCOMPLISHMENT INSTRUCTION SECTION FOR DETAILS.