As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SCHEDULED INSPECTION REVEALED DELAMINATED LT UPPER FORWARD MAIN SPAR CAP FROM BL42.25 TO BL55.30. FURTHER INSPECTION REVEALED SAME ON RT SIDE FROM BL41.52 TO BL51.77. SUBMITTER SUGGESTS CAUSE MAY HAVE BEEN FROM INADEQUATE HEAT TREATMENT AT TIME OF MANUFACTURE. RECOMMEND USING ULTRASONIC OR EDDY CURRENT INSPECTIONS TO ENTIRE LENGTH OF SPAR.