What was found
PILOT REPORT STRONG ODOR & LIGHT SMOKE OCCURED IN FLT DECK WITH PACKS RUNNING, HYDS ON. NARROWED DOWN TO EVENT HAPPENED WHEN ONLY NR 2 PACK ON. AFT CABIN, FLT ATTEND REPORTED SMOKE & STRONG ODOR COMING FROM CEILING DURING EVENT. TURNED HYDS OFF & PACK 2 OFF, ODOR & SMOKE NO LONGER PRESENT. PERFORMED FIM 21-00 TASK 830. RAN PACKS 1 & 2 FOR AN HR. RAN PACKS INDIVIDUALLY FOR 30 MINS. TURNED OFF APU FOR 30 MINS THEN RAN BOTH PACKS FOR 2 HRS. NO SMOKE, OR ABNORMAL ODORS NOTED IN CABIN. RAN HYD PUMPS FOR 30 MINS. PERFORMED GVI OF APU, PACK BAYS, PACK HEAT EXCHANGERS, & HYD PUMPS. INSPECTED RECIRC FILTERS, NO DISCREPANCIES NOTED ON FILTERS. BOTH RECIRC FANS OPS NORMALLY & DID NOT PRODUCE ANY ODORS OR SMOKE. OPS CHECKED ALL COFFEEMAKERS, NO DISCREPANCIES NOTED.