What was found
DURING FLIGHT 2996, IN LIGHT ICE AT 16,000 FT AT 18'C WITH BOOTS IN CONTINUOUS, GOT TIMER LIGHT RAN QRH, TRIED BOOTS IN MANUAL, COULD NOT GET WITH O/B TO INFLATE, ROLLER WAS AROUND 65 PERCENT. AIR TURNBACK TO MSP. MAINTENANCE WHILE CLEANING DISTRIBUTOR VALVE FOUND AIR LEAKING FROM T-FITTING B-NUT ON RT SIDE NACELLE. COMP CLEANED AND TIGHTENED B-NUT LEAK, OPS CHECK GOOD. REF 30-10-00.