What was found
VNAV BUTTON ON FGC STICKS WHEN PRESSED. GROUNDED - YES. CLEANED AND REINSTALLED BUTTON ON DFCS MCP PANEL REF B737-800 AMM 22-11-34-100-801.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
VNAV BUTTON ON FGC STICKS WHEN PRESSED. GROUNDED - YES. CLEANED AND REINSTALLED BUTTON ON DFCS MCP PANEL REF B737-800 AMM 22-11-34-100-801.