What was found
AIRCRAFT IN BASE MAINTENANCE: CORROSION OF SILL SHAPE FITTING BETWEEN FR66 AND FR68 AT STR 23L, MEASURING L= 2.30 IN, W=0.615 IN, D=0.110 IN. REPLACED SILL SHAPE FITTING WITH NEW IAW A321 SRM 51-42-11-801, 51-72-11-901-001, AND DRAWING D53480505.