As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - AIR TURNBACK - FLT 0590 - WHILE CLIMBING OUT OF PHX EN ROUTE TO MCI AT 10,000 FEET ECAM INDICATED THE RT AFT AVIONICS DOOR WAS OPEN. AIRCRAFT TURNED BACK AND LANDED SAFELY AT PHX. MAINTENANCE VERIFIED THE DOOR WAS CLOSED. ADJUSTED THE GAP ON THE RT AFT AVIONICS DOOR PROXIMITY SWITCH, OPERATIONAL TEST WAS GOOD.