What was found
DURING LEFT ENGINE AND TRUSS REPLACEMENT THE LEFT NACELLE INBOARD AND OUTBOARD UPPER KEEL WEBS WERE FOUND TO BE CRACKED. TWO CRACKS WERE FOUND ON THE OUTBOARD KEEL, P/N 114-98002201. ONE CRACK, APPROXIMATELY 1.25 INCH LONG, WAS LOCATED BETWEEN THE UPPER 2 RIVETS ON THE FORWARD SIDE OF THE KEEL WEB JUST BELOW THE UPPER OUTBOARD TRUSS ATTACH FITTING. A SECOND CRACK, APPROX 3 INCHES LONG, ON THE LOWER SIDE OF THE SAME FLANGE THROUGH THE ATTACHING HI-LOK FASTENERS WAS ALSO FOUND. ONE CRACK APPROX 1.25 INCH LONG, WAS FOUND ON THE INBOARD KEEL P/N 114-980021-1 RUNNING VERTICALLY THROUGH THE TOP TWO RIVETS ON THE FWD SIDE OF THE KEEL WEB JUST BEING DEVELOPED AT THE TIME OF THIS WRITING.