What was found
FLT#387, BOS-LAX. 'AT CRUISE FLIGHT APPROX 1 HOUR AFTER TAKEOFF, INFLIGHT REPORTED A STRONG MILDEW ODOR NEAR ROW 20 AND EXTENDING TO AFT/GALLEY. ITCHY THROAT, WATERY BURNING EYES AND NASAU SYMPTOMS REPORTED BY BOTH AFT CREW. ODOR ISOLATION PROC FOLLOWED AND COND IMPROVED WHEN PACK #2 SELECTED OFF. PACK #2 REMAINED OFF FOR FLT; COMPLIED WITH INFORMATION NOTICE 2017-T015, SECTION A, ISOLATED FAULT TO TYPE 10, PERFORMED ISOLATION PROCEDURES PER TSM 05-50-00-810-085-B. UNABLE TO DUPLICATE ODOR EVENT. PER TSM 05-50-00-810-085-B AIRCRAFT IS OK FOR SERVICE. PERFORMED ECS DECONTAMINATION LEVEL B PER AMM 21-00-00-615-803-A.'