What was found
NO AIRSPEED INDICATIONS ON CAPTAIN'S PFD ACCMP PITOT INSPECTION OF CAP PITOT PROBE REF AMM 34-11-15-200-001-A. FOUNF CAP PITOT PROBE (9DA1) BLOCKED WITH DEBRIS. A.C, RETURN BACK TO AUSTIN , FERRY CREW THAT WERE TAKING IT TO DENVER , REPORTED AIRSPEED INDICATION ISSUES, I T.-S , AND PERFORMED SEVERAL NAV SYSTEM TESTS , AND NO FAULTS WERE BEING INDICATED ,ALL TEST GOOD.. DURING THE FLIGHT THE F-O SCREEN WAS INDICATING AIRSPEED , WHILE ON THE PILOTS SCREEN IT WAS SHOWING BLANK, NO SPEED INDICATION AT ALL WAS SHOWN.. ACCMP TOTAL PRESSURE LINE FLUSH OF CAP PITOT PROBE (9DA1) REF AMM 34-10-00-170-001-A. ACCMP CAP PITOT SYS TOTAL AIR DATA LEAK TEST REF AMM 34-13-00-790-002-A AND FUNCTIONAL TEST OF ADM ACCURACY REF AMM 34-13-00-720-010-A FOR CAP PITOT PROBE ADM (19FP1). BOTH TEST PASS AND CAP AIRSPEED DATA OPERATES NORMALLY.