What was found
FLT NR 173 - MIA - ON CLIMB-OUT, AIRCRAFT WOULD NOT PRESSURIZE, BELLY DOOR E/E COMPARTMENT LIGHT CAME ON, DUMPED FUEL AND ACCOMPLISHED AIR TURN BACK. FOUND E/E DOOR DID NOT SHUT PROPERLY AND WARNING SWITCH BINDING, ADJUSTED SWITCH AND LUBED, CLOSED DOOR AND VERIFIED INDICATION. OPS CHECKED GOOD PER MM CH 52. (M)