What was found
FROM ROTATION TO APPROX 1000 FT AGL, A STRONG MUSTY AIR ODOR WAS DETECTED IN THE FLT DECK. FAS REPORTED A BURNED CRAYON ODOR IN THE FWD CABIN AT THE SAME TIME. ALL SYSTEMS OPS NORMAL PERFORMED INSPECTION OF THE RECIRCULATION FANS, NO DEFECTS NOTED. CREW PERFORMED A NR 1 & 2 ENGINES RUNS WITH AND WITHOUT PACK AIR, ALSO ALTERNATING PACKS. NO ODORS OR DEFECTS NOTED ON GROUND. OK FOR SERVICE.