As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE OIL PRESSURE LIGHT ILLUMINATED INFLIGHT FOR 2 MINUTES, WITH NORMAL OIL PRESSURE OF 63 PSID. ALL OTHER INDICATIONS ALSO NORMAL.REMOVED AND REPLACED NR 1 ENGINE LOW OIL PRESSURE SWITCH. CONDUCTED ENGINE RUN. NO LEAKS NOTED. CHECKS GOOD. NO LIGHTS OR WARNINGS. IAW EMB120 MM 73-30-00. PROP HEAT CHECKS GOOD.