What was found
B18771 AFT T/O POWER SET SPEED BETWEEN 80 TO 100 KNOTS FOUND SIDE CARGO DOOR LIGHT ILLUM. FOUND BOTH OUTSIDE AND INSIDE MASTER LATCH LOCK HANDLES WERE POPPED OUT AND PRESSURE RELIEF DOOR WERE OPENED. 2.IAW AMM 52-32-06 P501 ADJUSTED MASTER LATCH LOCK MECHANISM. 3.OPERATED SIDE CARGO DOOR SEVERAL TIMES AND CONFIRM DOOR WAS LATCHED AND NO DOOR WARNING LIGHT ILLUM. 4 NO FURTHER SIMILAR REPORT ON SUBSEQUENTLY FLIGHT.