What was found
ODORS IN COCKPIT / CABIN: BOTH CABIN AND COCKPIT HAVE A MUSTY SMELL DURING GROUND AND FLIGHT OPERATIONS. SMELL SEEMS TO BE WORSE ON GROUND DURING APU BLEED OPERATIONS. REMOVED LEFT AND RIGHT WATER SEPARATOR FOR DISSASEMBLY I / A/W CL650 AMM 21-51-13. REMOVED DIRTY COALESCER BAG. CLEANED WATER SEPARATOR AND INSTALLED NEW COALESCER BAG P/N 180849-28 AND REASSEMBUED 1/A/W CL650 AMM 21-51-13. INSTALLED BOTH WATER SEPARATORS I /A/W CL650 AMM 21-51-13-400-801. PERFORMED OPS CHECK USING APU BLEED AIR . OPS CHECK IS GOOD SMELL HAS GONE AWAY AFTER RUNNING APU FOR ABOUT 15-20