As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
P/R SMOKE IN COCKPIT, FWD LAV SMOKE ALARM WENT OFF. SMOKE NOT ICED FROM BEHIND P-18 PNL. VERY ACRID SMELL IN THE COCKPIT, DID NOT NOTICE SMOKE FROM EYEBALL VENTS. SMELL VERY STRONG IN FWD LAV SMOKE, CLEARED AFTER APPROX 2 MIN. NO SMELL NOTED FROM AFT OF FIRST CLASS. EMERG EQUIP CALLED OUT. FOUND FWD ENTRY LIGHT BALLAST M217 BURNED. REPLACED BALLAST.