What was found
AUTOPILOT B CHANNEL INOPERATIVE, AILERON SURFACE TEST FAILED 60.31. ACFT GROUNDED. WHILE PERFORMING TC 7822200, FMS FUNCTION CHECK. SURFACE TEST FAILED FOR AILERON 60.31 CHANNEL B. FAULTS 22-11340 AND 22-11146 WERE LOGGED. ALL OTHER LIBRARY GROUP TESTS PASSED. EXECEPT THE AILERON TEST 31. ATTEMPTED TO MAKE TEST, PASSED 5X BUT PREVIOUS FAULTS WERE LOGGED EVERY TIME. AILERON CHANNEL A PASSES. BITE LIBRARY 60.31, STEP FCC B S152, FAIL 8.44, AIL POS 5.95 / 8.05. CHECKED AILERON SYS ADJUSTMENT IAW AMM 27-11-00-820-805. FOUND LT AILERON RIG POSITION OUT OF LIMITS. ADJUSTED LT AILERON WING CABLES IAW MM 27-11-00-820-801, STEP 2I. CHECKED B SYSTEM AUTOPILOT AILERON ACTUATOR ADJUSTMENT IAW AMM 22-11-25-820-801. ADJUSTMENT GOOD. REPLACED AUTOPILOT ACTUATOR B IAW AMM 22-11-25-000-801 AND 22-11-25-400-801, OPS CHECK IAW AMM 22-11-25-820-801 IS GOOD, BUT OPS CHECK WITH 22-11-25-710-801 FAILS. SURFACES TEST STILL FAILS STEP 60.31. SYSTEM CALLS OUT AILERON POSITION SENSOR AND FCC-B. ON DEFERRAL.