What was found
WHILE IN FOR C-CHECK, MAINTENANCE FOUND CRACK INDICATIONS AT BS 266, 267, 268, RT LWR ROW OF FASTENERS ON UPPER SILL FRAME EXTERIOR SKIN OF FLIGHT DECK. MAINTENANCE FABRICATED DOUBLER REPAIR AND MADE FINAL INSTALLATION PER SRM 51-20-04, 53-30-3, 51-30-2.