What was found
DURING LT ENG & TRUSS REPLACEMENT, LT NACELLE INBD & OTBD UPPER KEEL WEBS FND CRACKED. TWO CRACKS FND ON OTBD KEEL, P/N 114-98002201. ONE CRACK, APPROX 1.25 INCH LONG, LOCATED BETWEEN UPPER 2 RIVETS ON FWD SIDE OF KEEL WEB JUST BELOW UPPER OTBD TRUSS ATTACH FITTING. A SECOND CRACK, APPROX 3 INCHES LONG, ON LOWER SIDE OF SAME FLANGE THRU THE ATTACHING HI-LOK FASTENERS WAS ALSO FOUND. ONE CRACK APPROX 1.25 INCH LONG FND ON INBD KEEL, P/N 114-9800211, RUNNING VERTICALLY THRU TOP 2 RIVETS ON FWD SIDE OF KEEL WEB JUST BEING DEVELOPED. SDR IS TO CLOSE SDR OF 5-13-95 WHERE LT NACELLE INBD & OTBD UPPER KEEL WEBS WERE FND CRACKED. ACFT REPAIRED IAW APROVED DATA & RETND TO SERVICE. REF OPR CNTRL NR PLGA11195G1.(X)