As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE AT FL 350 A GRINDING NOISE WAS COMING FROM UNDER FORWARD LAV FOLLOWED BY A BURNING ODOR SHORTLY THEREAFTER ECAM VENT EXTRACT FAULT ILLUMINATED. BOTH THE SOUND AND ODOR WENT AWAY. CONTINUED TO OAK NO OTHER PROBLEM NOTED. ITEM WAS CONTINUED UNDER MEL 21-26-02. LATER AT LGB REMOVED AND REPLACED EXTRACT FAN PER 21-26-51. AEVC TEST CHECKS GOOD PER 21-26-51.