As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - FLT 874 - AFTER TAKEOFF, SMOKE STARTED COMING OT OF THE LEFT AFT LAV, DECLARED AN EMERGENCY AND LANDED ALL ELSE WAS NORMAL. FOUND OIL RESIDUE AT BOTH OF COALESCER BAGS. REMOVED AND REPLACED COALESCER BAGS. OPS AND LEAK CHECK NORMAL. RAN BOTH ENGINES AND RAN BOTH PACKS AT HIGH ENGINE POWER SETTINGS AND NO FAULTS NOTED. OK TO CONTINUE. (M)