As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO THROTTLE DISCONNECTED WHEN TOGA PUSHED ON TAKEOFF. GROUNDED - YES. PERFORMED AUTOTHROTTLE BITE TEST IAW B737-900 FIM TASK 23-31 TASK 801. NO DEFECTS NOTED. NO FAULTS LAST 15 FLIGHTS. ACCOMPLISHED HGS SYSTEM TEST IAW SMM I34-36-00 AND DFCS LAND VERIFY TEST IAW B737-900 AMM 22-00-01-730-805 OPS CK NORMAL.