As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BOMBARDIER AEEROSPACE HAS JUST RECEIVED A REPORTABLE SDR EVENT WHICH WE ARE REQUIRED TO REPORT ON. WHILE IN CRUISE FLIGHT THE CREW COULD SMELL AND SEE SMOKE.OXYGEN MASKS WERE DONNED BY THE CREW ANDTHEPAX MASKS WERE DEPLOYED. FLIGHT WAS DIVERTED. UPON INVESTIGATION THE ENGINE #1 CARBON SEAL WAS FOUND TO HAVE COME APART.