What was found
ON CLIMBOUT, COULD NOT ENGAGE "A" AUTOPILOT. WE TRIED MULTIPLE TIMES. GROUNDED-YES. REPLACED S"A" SYSTEM ELEV AUTOPILOT ACTUATOR, REF B737-800 AMM 22-11-26. ACCOMPLISHED A/P ACTUATOR ADJUSTMENT AND TEST, REF AMM 22-11-26-820-801. ACCOMPLISHED A/P ACTUATOR TEST, REF AMM 22-11-26-710-806, ALL TEST PASS. ACTUATOR LEAK CHECK GOOD, NO FAULTS. PERFORMED BITE LIBRARY TEST, REF AMM 22-11-00 ALL LIBRARY TEST FOR A & B CHANNELS, NO FAULT NOTED AT THIS TIME. PERFORMED LRU REPLACEMENT TTEST FOR FCC A&B, REF AMM 22-11-33 NO FAULTS NOTED. P ERFORMED HGS SYSTEM TEST, REF HGS 4000 SMM 34-36-00 SECT 500 NO FAULTS NOTED.