What was found
ON TAXI OUT IN EYW, ENGINES RUNNING, APU BLEED ON, SULFUR ODOR THROUGH OUT CABIN. PILOTS MASK USED RETURNED TO GATE. PERFORMED INSPECTION OF ENGINES 1 AND 2 INLETS NO OIL FOUND AS WELL AS APU INLET AND SURROUNDING AREA. WITH SULFUR SMELL REPORTED AND SEAWEED IN AREA, PERFORMED LEVEL A DECON PER AMM 21-00-00. NO ODORS PRESENT. TYPE 10. OK FOR SERVICE. (LP: 8739344, AIRCRAFT WAS GROUNDED)