As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) VACUUM TURN AND BANK INDICATOR FAILED TO COME ON LINE AFTER AIRCRAFT WAS SITTING OUTSIDE AT BELOW ZERO DEGREES. FOUND EJECTOR TIP PLUGGED WITH ICE. HOSE REPLACED TO EJECTOR SO THAT EJECTOR TIP IS NO LONGER THE LOWEST PART OF SYSTEM.