What was found
LEFT WING, NR 4 FLAP TRACK TO MAIN LANDING GEAR BEAM ATTACH POINT HAS PITTING CORROSION (MARKED). REMOVED CORROSION FROM MAIN LANDING GEAR BEAM AT THE NR 4 FLAP TRACK ATTACH AREA IAW B727 SRM 51-10-6 AND BOEING TELEX NR 1-520765353 TO A 5 TO 1 BLEND RATION WITH A 1" RADIUS. MAXIMUM MATERIAL LOSS AT ANY ONE AREA .125. HFEC REWORKED AREA NO DEFECTS NOTED IAW MM PT6 51-00-00. SHOT PEENED AREA IAW BOEING SOPM 20-10-03. TREATED AND PRIMED AREA IAW B727 SRM 51-10-2. FOUND REPAIRED AREA TO BE STRUCTURALLY ACCEPTABLE IAW BOEING TELEX NO 1-520795353.