As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - FLIGHT NR 2094 - MASTER WARNING LIGHT DID NOT ILLUMINATE DURING A DAILY SYSTEM CHECK. MAINTENANCE RESET MASTER WARNING PUSH TO TEST SWITCH. LIGHTS OPERATIONAL CHECK GOOD. WARNING SYSTEM TEST OPERATIONAL CHECK GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.