What was found
RIGHT LWR TRANSCOWL INNER COAMING IS CHAFED AT FWD LATCH. COMPLIED WITH GREO 670-54-21-1028, REV (NC), BLENDED OUT CHAFE AND PERFORMED NDT INSPECTION. WHILE REMOVING CHAFED MATERIAL FROM INNER COAMING CHAFE, FOUND THAT CHAFE GOES THROUGH INNER COAMING AND INTO FIRE-SHIELD DISHING. BLENDED OUT CHAFE DAMAGE AND COMPLIED WITH REO 670-54-21-1827, REV --, VALIDATE C-DUCT RIGGING IAW AMM 78-30-00-820-801 PERFORMED FUNCTIONAL TEST OF THE THRUST-REVERSER IAW AMM 78-30-00-720-801(CONFIGA01) . CHECKS GOOD. COMPLIED WITH SKYWEST TASKCARD 51-900-1002-SKY.