As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5781 - HAD A MOMENTARY LAVATORY SMOKE DETECTION ON EICAS AFTER TAKEOFF FROM CLT. NO SMOKE WAS EVIDENT AND MSG CLEARED ON ITS OWN. ONCE A/C ARRIVED IN TYS, MAINTENANCE INSPECTED LAVATORY SMOKE DETECTOR AND PERFORMED OP CHECK. OP CHECKS GOOD. (M)