What was found
DISCREPANCY: DURING A ROUTINE MAINTENANCE CHECK, A CRACK WAS DISCOVERED EMANATING FROM FASTENER AT THE AFT LEFT HAND EMERGENCY ESCAPE HATCH., BS840, STRINGER 17L. CORRECTIVE ACTION: ACCOMPLISHED BS178 BS840 FRAME ATTACH ANGLE REPAIR AT S17L, IAW B727 SRM 53-10-2, FIGURE 2. THE AIRCRAFT WAS RETURNED TO SERVICE.