What was found
DURING C-CHECK, FOUND LEFT MAIN GEAR UPLOCK SUPPORT FITTING SUPPORT ANGLE CRACKED BS 910 BETWEEN STRINGER 18 AND 18R. COMPLIED WITH BOEING SERVICE BULLETIN 727-53-165 INSTALLED FRAME MODIFICATION AT BS 910 AND 913.5 BETWEEN STRINGER 18A AND 18, LEFT MAIN W/W.