As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL FLIGHT CONTROLS BORESCOPED. ALL FLIGHT CONTROLS EXHIBIT CORRISION THROUGHOUT, FLAPS, AILERON, & RUDDER. CORROSION FOUND THROUGHOUT ALONG THE SEAM LINES FROM INADEQUATE SURFACE PREP AND THROUGHOUT THE FLIGHT CONTROL STRUCTURE AND RIVET JOININGS. EXAMINED A 2016 SN 1841 WHICH LOOKED BRAND NEW. PHOTOS PROVIDED FOR THE DOCKET.