What was found
FLT - 711 - MIA-MEX - CREW REPORTED UNABLE TO PRESSURIZE IN FLIGHT, DUMPED FUEL AND RETURNED TO MIA. FOUND RIGHT MAIN GEAR DOWNLOCK VIEWING WINDOW MISSING, INSTALLED VIEWING WINDOW (P/N 66-16515-1), REPLACED SEAL (P/N 66-16514-1) AND CLIPS (P/N 66-14269-1) PER MM 56-40-0. PRESSURIZED A/C PER MM 5-51-71, PERFORMED DECAY CHECK, GOOD. (M)