As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT CABIN ANTI-VIBRATOR TUNING HAMMER SUPPORT FITTINGS CRACKING IN RADIUS, BOTH FORWARD AND REAR FITTINGS CRACKING AT SAME TIME. THIS CAUSES NOTICEABLE INCREASE IN CABIN VIBRATION LEVELS. FITTINGS NEED TO BE OF GREATER STRENGTH AND MACHINED RADIUS INCREASED.