What was found
DURING ACCOMPLISHMENT OF TASK CARD 53-23-00-220-C04-A00, FOUND CORROSION UNDER LAVATORY AREA FLOOR BEAM CAP, FLOOR ATTACHMENT POINTS. ORIGINAL MATERIAL THICKNESS .040", ALLOWABLE DAMAGE LIMITED TO 30% OF ORIGINAL THICKNESS, MEASURED .031" DEEP, EXCEEDING THE MAX ALLOWABLE. CONTACTED EMBRAER AND REPAIRED UNDER EMBRAER'S ETD 2022-145-011622. NO FURTHER MAINTENANCE REQUIRED.