What was found
SHIP 3826 -MISC/DE- DUE TO F/O'S AIRSPEED UNRELIABLE ON APPROACH TO JFK. CORRECTIVE ACTION: PERFORMED LT-RT ADIRU BITE TEST. NTF. PERFORMED PITOT PROBE HEAT TEST AND HEATER RESISTANCE TEST. ALL CHECK GOOD. CHECKED FIRST OFFICER'S PITOT AND STATIC DRAINS FOR FLUID AND FLUSHED LINES. REPLACED FIRST OFFICER'S STATIC ADM. PERFORMED RIGHT PITOT AND STATIC FULL RANGE LEAK TEST. PROBE HEATER RESISTANCE OK. PRESSURIZED ALL 3 PITOT STATIC SYSTEMS TO 40K FOOT. ALL WITHIN LIMITS. AIRCRAFT RETURNED TO SERVICE.