As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING CLIMB, CONTINUOUS AND INTERMITTENT FAULT INDICATION FOR DOOR AFT CARGO AND AFT CARGO HEAT. FLIGHT AIR INTERRUPTED AND RETURNED TO DFW. REPLACED AFT CARGO DOOR HANDLE PROXIMITY SWITCH SENSOR (AALA202009109004) WITH NEW IAW AMM 52-71-12, OPS CHECK GOOD. ALSO REPLACED AFT CARGO TEMPERATURE SENSOR (AALA202009109008) WITH NEW IAW AMM 21-43-15, OPS CHECK GOOD.