What was found
DURING THE ACCOMPLISHMENT OF SB 190-57-0056, WHILE THE LH WING FORWARD REINFORCEMENT PREPARATION, SOME FASTENER HOLES WERE DRILLED TO 0.205” DIAMETER INSTEAD OF 0.185” DIAMETER. ADDITIONALLY, DURING FASTENER REMOVAL AT THE LH AFT REINFORCEMENT, A 0.312” DIAMETER PRODUCTION FASTENER WAS FOUND IN A LOCATION WHERE SB 190-57-0056 CALLED OUT TO INSTALL A 0.246” DIAMETER FASTENER (LH WING LOWER SKIN RIB 8 BETWEEN STRINGER 25 AND 26). WAS REPAIRED FOLLOWING EMBRAER REPAIR INSTRUCTIONS UNDER ETD2022-190-027847 REV / AND COOPESA EO # COO-EO-2022-16180-R00 AND APPROVED ON ANAC F-200 FORM PROVIDED BY EMB.