As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BUR - ON FLIGHT 2505, FLIGHT ATTENDANT REPORTED ARCING NOISE IN LAV THEN THE LAV LIGHTS FAILED. NO C/B'S WERE POPPED BUT WE PULLED C/B M5 ON CBPZ AS A PRECAUTION. MAINTENANCE INSPECTED AND FOUND LIGHT IN LAV NOT SEATED IN RECEPTICLE. RESEATED LAMP, OPERATED LIGHT SEVERAL TIMES, NO ARCING SOUND. LIGHT OPERATED NORMALLY AFTER C/B WAS RESET. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.