What was found
LH WING UPPER SURFACE HAS CORROSION IN SEVERAL SPOTS ALONG THE BLACK PAINTED LINE ACROSS FROM SPOILERS 3,4 AND 5. MARKED IN RED. GROUNDED - YES. REMOVED FASTENERS IN AFFECTED AREA, CORROSION DAMAGE REMOVED BY BLENDING, HFEC INSP WERE PERFORMED WITH NO ADDITIONAL FINDINGS, REWORK AREA WAS FLAP PEENED, SURFACE TREATMENTS WERE APPLIED AND FASTENERS INSTALLED IAW ALASKA EA 800-57EA-25436 REV 00 DATED 3/31/2023. THIS IS A CATEGORY A REPAIR.