As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PREFORMING SCHEDULED MAINTENANCE,REMOVED EXHAUST STACKS TO FACILTATE INSPECTING THE EXHAUST DUCT.A CRACK WAS FOUND IN THE SKI SLOPE.THE EXHAUST DUCT SB 3380 HAD BEEN COMPLIED WITH 365 HOURS PRIOR.POWER SECTION WAS REMOVED FOR REPAIR.