What was found
COMPLY WITH SCHEDULED MAINTENANCE CODE: AD - COMPLY WITH PARAGRAPH (J) OF AD FOR THE LH PYLON BY REPLACING AFFECTED FASTENERS AND COLLARS, INCLUDING DOING ALL APPLICABLE RELATED INVESTIGATIVE AND CORRECTIVE ACTIONS, IN ACCORDANCE WITH THE ACCOMPLISHMENT INSTRUCTIONS OF BOMBARDIER SERVICE BULLETIN. (C-CHECK) RO 4/3/2020 COMPLIED WITH PARAGRAPH (J) OF AD FOR THE LH PYLON BY REPLACING AFFECTED FASTENERS AND COLLARS, INCLUDING DOING ALL APPLICABLE RELATED INVESTIGATIVE AND CORRECTIVE ACTIONS, IN ACCORDANCE WITH THE ACCOMPLISHMENT INSTRUCTIONS OF BOMBARDIER SERVICE BULLETIN / COMPLIED WITH SERIAL NUMBER. SERVICE BULLETIN, NACELLES/PYLONS - PYLON PRIMARY STRUCTURE - REPLACEMENT OF THE HI-LITES AND COLLARS THAT ATACH THE UPPER AND LOWER SKINS TO THE LEFT AND RIGHT PYLON, PART A, INCORPORATED.