What was found
DURING DESCENT, IN HEAVY RAIN, RECEIVED A MISCOMPARE AND SEVERAL ALERTS, SEL ELEV FEEL MAN, SEL FLAP LIM OVRD. DETERMINED THE FIRST OFFICER`S AIRSPEED RELIABLE AFTER RUNNING AIRSPEED UNRELIABLE CHECKLIST. LANDING UNEVENTFUL. FOUND THE CAPTAIN`S PITOT TUBE DRAIN HOLES TOTALLY CLOGGED. REMOVED DEBRIS IAW AMM 34-11-02-6. PUMPED UP CAPTAIN`S AND FIRST OFFICER'S AIRSPEEDS AFTER CLEANING & THEY MATCHED IN FLIGHT DECK. IAW AMM 34-16-00-5. ACFT GOOD FOR SERVICE.