What was found
DURING ROUTINE MAINTENANCE, A MECHANIC FOUND TWO SMALL CRACKS PROTRUDING FROM RIVET ON LEFT HAND WING LEADING EDGE SKIN OUTBOARD OF ENGINE NACELLE. INSPECTION OF INNER LEADING EDGE REVEALED CRACKED RIB. AFTER REMOVAL OF LEADING EDGE SKIN, FOUND SMALL ENGINE NACELLE TO WING ADJUSTABLE RIB CRACKED. ALSO, FOUND LEFT HAND OUTBOARD NACELLE SKIN AROUND THE REMOVED LEADING EDGE CRACKED. CRACK WAS ALSO NOTED ON OUTBOARD NACELLE ACCESS COVER DOUBLER RING.