What was found
DURING CLIMB, STALL WARNING, ALPHA TRIM B, NR 1 PROBE TRIFOILS TURNED TO CLOVERLEAF WITH MWS FAULT AND CAPTAINS AIRSPEED INDICATOR ERRONEOUS WITH CONTINUOUS OVERSPEED WARNING. FUEL DUMPED (30,000 LBS) TO ACCEPTABLE LANDING WEIGHT, AIRCRAFT RETURNED TO AIRFIELD. LANDING NORMAL. MAINTENANCE FOUND LOOSE CONNECTOR (PITOT) AT NR 1 ADC. CONNECTOR SECURED, FUNCTIONAL CHECK AND LEAK CHECK SATISFACTORY IAW 34-11-20 AND 34-11-10. AIRCRAFT RETURNED TO SERVICE.