As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEVERE CORROSION ON BULKHEAD LOCATED AT STA 228.3. THE CORROSION IS AT THE UPPER PART OF THE BULKHEAD WHERE THE FORWARD STEEL ATTACHMENT FITTING IS LOCATED. THIS STEEL FITTING SERVES AS THE FORWARD VERTICAL STABILIZER ATTACHMENT POINT. PIPER SB 977 DOES NOT COVER THIS SUBJECT. THIS CONDITION WAS VERY DIFFICULT TO DETECT. THE ONLY INDICATION WAS A VERY SLIGHT AMOUNT OF PITTING ON THE DOUBLER.