What was found
UPON REMOVAL OF A DAMAGED HI-LOCK PIN FOUND ON 2C CHECK, THE HOLE WAS MISDRILLED IN THE LEFT WING AUX SPAR, AT STATION Y=2902, AT THE LOWER SPAR-TO-NACELLE FITTING. THE DAMAGE EXTENDED THROUGH THE FWD FITTING, THE DOUBLER, THE AUX SPAR, THE LOWER SPAR CAP, AND THE AFT FITTING. THE HOLE WAS REPAIRED AND THE HI-LOCK REPLACED PER EMBRAER APPROVED REPAIR PROCEDURE NR EST-564/96.