What was found
DURING ROUTINE C-CHECK INSPECTION, FOUND COCKPIT ESCAPE HATCH FUSELAGE STRUCTURE HAS HOLE DRILLED THROUGH SKIN, AFT RT HAND CORNER. REPAIRED COCKPIT ESCAPE HATCH FUSELAGE STRUCTURE AFT RT CORNER IAW AIA/E/2620 AND EA L1-53-004, 8110-3 REV ORIG, SEPT 06, 1997. C-CHECK WORK CARD NUMBER 02-53-1001. NON-ROUTINE TASK CARD NUMBER 000688.