What was found
AIRCRAFT AUTOPILOT DID A POOR JOB, /- 10, OF HOLDING AIRSPEED IN CLIMB & DESCENT. IN PROFILE IN DECENT AIRSPEED KEPT CREEPING INTO ZIPPER. WENT LEVEL & CHG DIALED AIRSPEED BACK WITH NO HELP. BROUGHT THROTTLES TO IDLE MANUALLY & ACFT WENT INTO THRUST LATCH & TRIED TO CLIMB, WITH AUTOPILOT & AUTO THROTTLES OFF. AIRPLANE ATTEMPTED TO DIVE TO 10 DEG NOSE LOW @ 6000 FT PER MIN DIVE. SELECTED ADC 2 & RECOVERED. R & R NR 1 ADC IAW 34-11-34-04, R & R NR 1 FLIGHT AUGMENTATION COMPUTER IAW 22-26-34-04. R & R CAPTAINS PITOT PROBE IAW 34-11-15-04. DUE TO LLM PARTS BEING CHANGED PERFORMED AFS LAND TEST IAW 22-40-00-5, 22-00-00-2-0, NO FAULTS FOUND. ALL CHECKED NORMAL. ACFT OK FOR SERVICE.