As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG MOUNT BRACKET LOCATED AT UPPER RT SIDE FUSELAGE IMMEDIATELY AFT OF FIREWALL. NUT AND WASHER OF ENGINE MOUNT BOLT PULLED THROUGH BRACKET, BOWED FIREWALL, AND PRODUCED CRACKS IN FIREWALL DOUBLER PN 0513109-29. NOTED LACK OF TACHOMETER MARKINGS REQUIRED BY STC SA777CE DENOTING LIMITED OPERATION 2000-2350 RPM.