What was found
SIMULTANEOUS LOSS OF ONE MACH TRIM CHANNEL, AUTOPILOT "A" AND CAPTAIN SIDE FLIGHT DIRECTOR SHORTLY AFTER LEVEL OFF AT 37,000'. COMPLIED WITH QRH. GROUNDED - YES. PERFORMED DFCS BITE PER B737-800 FIM 22-11 TASK 801. NO CURRENT FAULTS. FOUND FAULTS FOR FCC IN FL 2. PERFORMED GOOD LRU TESTS GROUP 20 PER FIM 22-11 TASK 801. PERFORMED GOOD BITE LIBRARY TESTS PER B737-800 AMM 22-00-01-730-803 AND AMM 22-11-00-740-806. PERFORMED GOOD LAND VERIFY TEST PER AMM 22-11-00-700-801. PERFORMED GOOD LRU REPLACEMENT TEST FOR FCC'S BITE GROUP 35 PER AMM 22-11-33-400-801. ALL REQUIRED LLM TESTS PASSED.