As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) INBOUND FOR LANDING, THE NR 2 GPS SCREEN WAS SEEN TEMPORARILY GOING BLANK THAN COMING BACK ON. WITHIN A FEW SECONDS BOTH CREW MEMBERS NOTED AN ODD ODOR IN THE COCKPIT. THE NR 2 GPS WAS TURNED OFF AND THE CIRCUIT BREAKERS WERE PULLED. THE ODOR DISSIPATED. THE ACFT LANDED WITHOUT FURTHER INCIDENT. THE SMELL WAS AN ACID ODOR. THE NR 2 GPS WAS NO LONGER FUNCTIONING. THE UNIT WAS REPLACED AND THE ACFT RETURNED TO SERVICE.