As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS FOR A LAVATORY SMOKE INDICATION AT 500 FT. F/A INDICATED SMOKE AT ROWS 12 - 18 THAT QUICKLY DISSIPATED. PERFORMED ETN -EM-72-034. FOUND SOURCE OF SMOKE TO BE THE NR 2 ENGINE. R & R THE NR 2 ENGINE IAW W/C 71-000-00. ALL LEAKS AND OPS CHECKED GOOD.