What was found
RED CARGO LIGH TON FLIGHT ENGINEERS PANEL ILLUMINATED, CHECK MASTER CONTROL OF CARGO DOOR AND HOOKS UNLOCKED LIGHT ILLUMINATED. CHECKLIST (ABNORMAL) COMPLETED NR 4 AMBER LIGHT ON CARGO DOOR MASTER CONTROL BOX WAS ILLUMINATED. CLIMBING THROUGH 17,000 FEET, A LOUD BANG WAS HEARD. CLIMBING THROUGH 20,000 FEET, RED CARGO LIGHT ILLUMINATED. PERFORMED INSPECTION AS PER AERONAUTICAL ENGINEERS 727-200 CARGO DOOR CONVERSION MANUAL, CHAPTER 7. NO DEFECTS NOTED. (M)