As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER INSTALLING NR 2 ENGINE, DISCOVERED INBD BI-POD MOUNT LOOSE AT LOWER ENGINE DECK FLOOR. CHECKED NR 1 ENGINE AND DICOVERED IT ALSO WAS LOOSE. SUSPECT DAMAGE TO U-CHANNEL AT STRUCTURE WHERE INBD MOUNTS CONNECT. IN THE PROCESS OF REMOVING ENGINE TO FURTHER INVESTIGATE IN CONTACT WITH TECH AND FOLLOWING ENGINEERING STEPS TO FURTHER EVALUATE DAMAGE.