What was found
DURING M-CHECK FOUND MAIN CABIN STA 389, LONGERON 17 RT IS CRACKED AT FRAME IAW 5310-01313-01, STEP 4 PRIOR TO FURTHER FLIGHT. REMOVED SPLICE AT BS 399, RT L-17 IAW SRM 51-30-2 & 51-30-05. CUT OUT SECTION RT LONGERON 17 RS 379-399 IAW SRM 53-02, FIG 18. FABRICATED SPLICE FROM MAT PN 00-210-31972 PO 0299WO032. FABRIATED LONGERON FROM MAT PN 2777922-3 PO 1021994 INSTALLED SECTION LONGERON & SPLICES IAW SRM 53-02, FIG 18. REQUIRED INSP COMPLETED.