As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CYLINDER BASE STUDS BROKE ON NR 3 CYLINDER. APPEARS TO HAVE STARTED FROM THE BOTTOM RIGHT PART NUMBER 76220-P01 THRU STUD BROKE AT THE CYLINDER BASE AND .500 NUT. THE REST OF THE STUDS BROKE DUE TO INCREASED LOAD FROM THE BROKEN 76220 STUD.