As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
'NO FLIGHT' - FOUND DURING HEAVY C-MAINTENANCE CHECK AT TIMCO HEAVY MAINTENANCE FACILITY (WINSTON/SALEM, NC). FOUND CORROSION ON STR S20R, STA 990. REMOVED AND REPLACED STR S20R, STA 990 IAW BOEING SRM. AIRCRAFT WAS RETURNED TO SERVICE. (X)