What was found
COCKPIT FUMES SMELLED STRONGLY OF DIRTY SOCK TYPE ODOR. BOTH ENGINES SHOWING OIL QTY 24/24 BOTH ENGINES WERE RUN WITH CREW IN FLIGHT DECK, NO EVIDENCE OF BAD OR CHEMICAL ODOR DURING PACKS OPERATION WITH RECIRC FANS ON AND OFF, FLIGHT DECK, E/E AND A/C BAYS WERE INSPECTED NO EVIDENCE OF BURNING OR DAMAGE EQUIPMENT NOTED, WITH APU RUNNING AND PACKS ON WITH RECIRC FANS ON AND OFF NO EVIDENCE OF BAD ODOR NOTED FOLLOWING AMM 05-51-58-800-801-C3. ALL ENGINE PARAMETERS OK SMOKE/ODOR IN THE FLIGHT DECK - CONDITIONAL INSPECTION PERFORMED IAW AMM 05-51-58-800-801-C3, ACFT BACK TO SERVICE.