As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE FLAMED OUT AT FL 370 WHEN ANTI-ICE WAS SWITCHED ON. DESCENDED TO FL 290 AND ENGINE RE-STARTED. FLIGHT CONTINUED WITH NO PROBLEMS. AFTER RETURNING TO HOME BASE, COULD NOT DUPLICATE PROBLEM. INSTALLED A LOANER ENGINE AND SENT DEFECTIVE ENGINE FOR TEST AND REPAIR AS NEEDED.