As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: THUMBNUT NEXT TO LEFT WING AILERON POSITION TRANSMITTER IS CRACKED. REMOVED AND REPLACED THUMBNUT ON LEFT HAND AILERON POSITION TRANSMITTER CONTROL ROD. PERFORMED SATISFACTORY POSITION TRANSMITTER CHECK. PER B737-NG AMM 31-31-31 AND B737-NG AMM 20-10-44.