What was found
NOXIOUS FUMES IN COCKPIT ON GROUND WITH PACKS OPS, SORE THROAT, CONGESTION, HAD TO VACATE FLIGHT DECK. OPENED LT PACK DOOR, INSPECTION FOUND NO ODOR IAW 21-51-00. RAN LT & RT PACKS IAW AMM 21-00-00-800-803. COULD NOT DETECT ODORS, WALKED CARGO AREA, CARGO PITS, NO ODOR NOTED. OPEN FWD AND AFT E&E DOORS IAW AMM 52-48-41, NO ODOR NOTED. NO IRRATATION OF EYES OR NOSE IN FLIGHT DECK AS WE WORKED. CHECKED LT PACK FOR HYD CONTAMINATION, NONE FOUND. COMPLETED PACK BURN OUT IAW FIM 21-00 TASK 506. CHECKED FLIGHT DECK MUFFLER, NO CONTAMINATION.