As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUDED: AFTER LEVEL OFF BULK CARGO AFT MESSAGE FOR HEATER - ON. VERIFIED SWITCH WAS ON. ANIMALS IN THE AFT SO RETURNED TO GRU. ACCOMPLISHED FIM 21-44-00-810-809 FOR MAINTENANCE MESSAGE 21-12022, AND REPLACED BULK CARGO HEAT SHUTOFF VALVE V21443 IAW AMM 21-44-03.