What was found
STRONG OILY ODOR DETECTED DURING DESCENT. MUSTY SMELL APPEARS TO BE PACK RELATED. A/C SYS OIL CONTAMINATION REM OVAL. PERFORMED GVI OF BOTH PACKS, SUPPLY DUCTS, MIX MANIFOLD & RECIRCULATION AIR FILTERS. NO DEFECTS OR OIL CONTAMINATION NOTED. FILTERS CLEAN. OPERATED BOTH PACKS WITH APU AIR & NO SMELLS NOTED. PERFORMED SMOKE OR FUMES REMOVAL FROM THE A/C SYS TROUBLESHOOTING IAW FIM 21-00-01/301. WITH BOTH ENG AT MPA & ISOLATING PACKS, RECEIVED NO ABNORMAL SCENTS. PACK OUT, PRECOOLER OUT & DUCT TEMPS ALL STABLE & WITHIN LIMITS. .989 RECORDS NO EXCESSIVE OIL CONSUMPTION RATES IN DCC. NO FAULTS FOUND AT THIS TIME ON GND, ACFT OK FOR SERVICE.