As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTED FAINT ELECT/ BURNED INSULATION TYPE ODOR IN FLIGHT. NO SMOKE. COULD NOT IDENTIFY THE SOURCE. PRECAUTIONARY LANDING MADE. INSPECTED ACFT AND PERFORMED NUMEROUS ENG RUNS LETTING THE HEAT BLOW FULL HOT EACH TIME. COULD NOT DUPLICATE ANY ODOR OR BURNED SMELL. REMOVED AND INSPECTED WATER SEPERATOR COALESCER WITH NO DEFECTS NOTED. REINSTALLED COALESCER AS REQUIRED. CANNOT DUPLICATE SQK AT THIS TIME.