What was found
#1 AIR DATA COMPUTER FAILED ON TAKE OFF. WITH FULL THROTTLES AIR SPEED KEPT DECREASING- A/C SHOOK VIOLENTLY- NO STICK SHAKER OR CLACKER.CORRECTIVE ACTION: R&R'D #1 ADC COMPUTER OPS CK'D GOOD PER MM 34-12-34. PERFORMED EXCESSIVE TURBULANCE INPECTION I/A/W MM 5-51-17 NO FAULTS NOTED, PERFORMED PITOT-STATIC CHECK ON #1 AND #2 SYSTEM, SYSTEMS OPS CK GOOD PER MM 34-11-10 PAGE 501, NO DEFECTS NOTED. FOR CAUSE COMPLIED WITH TEST FLIGHT, NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.