What was found
A CRACK WAS DISCOVERED ON THE WING CNTR SECTION FRONT SPAR RING CHORD PN 111T2023-5. THE CRACK WAS FOUND AT A FASTENER HOLE BETWEEN S28L & S29L. IAW PART 1 STEP 2 OF ECRA INITIATE A CF FOR TIME LIMIT ON FAA FORM 8100-9 TO BE RECEIVED BEFORE 24 OCT 2015. THE REPAIR PER ECRA 5710-02320 HAS RECEIVED FIRST STAGE FAA APPROVAL. A NEW FORM 8100-9 SHOWING FULL COMPLIANCE WITH 14 CFR 26.43D AND 25.571 MUST BE RECEIVED BEFORE 24 OCT 2015 FOR THE AC TO REMAIN AIRWORTHY. INF- :THE REPAIR IS BEING EVALUATED FOR DMG TOLERANCE & WILL LIKELY BE MADE PERMANENT WITH REPEATED INSPECTIONS. CONTACT ENGINEERING AFTER 24APR15 BUT PRIOR TO 24MAY15 FOR DISPOSITION.