As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT AFT TAIL PIPE FAIRING HAS FRETTING AT FWD MATING SURFACE FOR APPROXIMATELY 40% OF CIRCUMFERENCE. C-CHECK RO 11/21/2020. REPLACED FWD UPPER AND LOWER STIFFENERS P/N 228-50181-847 AND P/N 228-50181-255, AND UPPER AND LOWER SEALS, REF BOMBARDIER CMM FIGURE1/GRAPHIC.