As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE PERFORMING INSPECTION IT WAS NOTED THAT STRINGER 28R STATION 560 AT FRAME HAS CORROSION. CUT OUT DAMAGED STRINGER FROM STA 552 - 569. FABRICATED NEW 17 INCH LONG STRINGER FROM BAC 1498-146 7075 T62 .080 INCH. INSTALLED REPAIR, NO OTHER DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE.