As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS AFTER TAKEOFF THE CREW WAS COMPLETING THE AIR PORTION OF THE ICE TEST WHEN A ODOR WAS SMELL IN THE CABIN AFTER A MINUTE THE ICIAS SHOWED SMOKE IN THE LAV BUT NO CABIN INDICATION OR SMOKE WERE NOTED IN THE LAV THE CREW RETURNED TO TYS. MAINT PERFORMED ALL TEST AND COULD'NT DUPLICATE. A DECISION WAS MADE TO R/R THE ENGINE, EVIDENCE SHOWED CARBON SEAL FAILURE. ENG WAS R/R IAW ROLLS-ROYCE MM. AND OPS CHECKS GOOD.