What was found
MAIN ROTOR BLADE FOUND CRACKED. CRACK LOCATED AT STA 172 AND STA 180, CORDWISE ON BOTTOM OF BLADE AT 13 INCHES LONG, 5 INCHES FROM LEADING EDGE. ONLY 4 HOURS OF FLIGHT SINCE LAST INSPECTION. ACFT TOTAL TIME, 566 HOURS, 3 BLADES FOUND CRACKED AT SAME TIME. (X)