What was found
FAULT-STR-Z400 #1 ENG O/B T/R C-DUCT ACOUSTIC INNER SKIN HAS A PUNCTURE (2 LOCATIONS), INSPECTED, REPAIRED DAMAGED AREA (2EA), FILLED HOLES 2(E/A) WITH ADHESIVE FILLER COMPOUND P/N:04-009-0146 B/N:0004667693, IAW B757-200 AMM 78-31-20-308-117.