As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS ON DESCENT WE GOT AN INDICATION AFT SMOKE LAV, IT WENT ON FOR A FEW SECONDS THEN WENT OUT, THE FA'S GOT A WARNING ALSO, THEY DIDN'T SEE OR SMELL ANY SMOKE. MAINTENANCE ACCOMPLISHED BITE AND OPS CHECK OF LAV SMOKE DETECTOR SYSTEM IAW AMM 26-17-00-810-801A AND AMM 26-17-00-710-001A AND NO DEFECTS NOTED.