What was found
DE-ICE PRESSURE CAUTION LIGHT WHILE BOOTS CYCLING. LT INBD TAIL INDICATOR LIGHT FLICKERED OFF AND ON AND DE-ICE PRESSURE DROPPED TO 16 PSI. FOLLOWED CHECK LIST, RETURNED TO DEPARTURE. LANDING UNEVENTFUL. INSPECTED LT INBD L/E 331AL FOUND TORN AND EMBEDDED WITH WATER. R & R L/E 331AL IAW AMM TASK 55-13-00-000/400-801. OPS TEST GOOD. AT MX CONTROL REQUEST R & R DDB NR6 IAW AMM TASK 30-11-16-000/400-801. C/W FUNCTION TEST OF DEICE SYS. INSPECTED ALL L/E BOOTS AND DRAIN AIR HOSE OF L/E 331AL FOR ANY RESIDUAL WATER. NO FUTHER DEFECTS NOTED. RETURNED TO SERVICE.