As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND OLD INTERNAL DOUBLER WITH CUT OUT ACC SRM IN OUTER SKIN AT FRAME 19, STRG 17 RHS. INNER DOUBLER IS NOT COMPATIBLE WITH PTOF CONVERSION. REPAIR PERFORMED BY RENEWING INTERNAL DOUBLER BY AN EXTERNAL ONE IAW DWG BEA 14095229-02 AND RAS/DABRE/70059934/2005.