What was found
DURING HEAVY CHECK, RT WING SPAR 2 AT HOLE A3 IS CRACKED. MAINTENANCE REAMED SPAR 2 HOLE TO .750 CRACK STILL PRESENT PERFROMED CUTOUT OF SPAR 2 IAW ANNEX A FIGURE 30, 31 AND ETD 2014-170-054752. INSTALLED CUT OUT BUSHING IN A3 HOLE IAW SB 170-57-0053 AND ETD 2014-170-054752. INSTALLED FILLER PIECE IAW ANNEX A AND ETD 2014-170-054752 INSTALLED WET DOUBLER, 3RD CAP SPLICEAND LOWER SKIN DOUBLER IAW ANNEX A ETD 2014-170-054752. CLEANED AND INSPECTED AREA REF EMB 170/175 NDTM INTRO FRONT MATTER. PLACED ON NON MEL DMI FOR PERIOD OF 12 MONTHS FOR FURTHER SUBSTANTION SINCE THIS IS CONSIDERED TEMP REPAIR DMI 403457-3.