As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CARGO HEAT VALVE AFT FAILURE OF AFT CARGO HEAT SHUTOFF VALVE OR (SOV) OR TEMP CONTROL VALVE (TCV). STATUS MSG-2112031 LATCHED ER MODE. CHRONIC FAILURE ON CMC AND HISTORY SUGGESTS VALVE REPLACEMENT. CURRENT MSG HITTING IS 21-12021 CARGO HEAT SHUTOFF VALVE AFT V21441 646-0013, AMM 21-44-01.