As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING UNRELATED MAINTENANCE IN THE AFT EQUIPMENT COMPARTMENT AN AME OBSERVED THAT THE LEFT AND RIGHT HEAT EXCHANGER DIFFUSERS WERE SEPARATED FROM THEIR RESPECTIVE HEAT EXCHANGERS. THE DIFFUSER MATING SURFACES HAD PULLED THROUGH THE ATTACHING HARDWARE. (TC# 20190412003)