What was found
DOOR FD OVHD EICAS ILLUMINATED CLIMBING THRU FL290. ACCOMPLISHED DOOR FD OVHD CHECKLIST AND PUT DOOR IN SAFE CONFIGURATION. THE DOOR LOCK MOVED FROM LOCKED TO UNLOCKED BY ITSELF DURING TURBULENCE. PRESSURIZED A/C TO 4.0 FOR 20 MINUTES, UNABLE TO MOVE LATCH WITH MODERATE PRESSURE, LATCH DID NOT MOVE ON ITS OWN. AMM52-21-00-716-013 DOOR OPERATES NORMAL WITH NO MALFUNCTION. INSPECTED DOOR, DOOR SILL AREA, AND OUTER SKIN, DO DEFECTS OR ABNORMALITIES FOUND. O.K. TO CONTINUE