As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERTICAL SPEED INOP AUTOPILOT A. GROUNDED - YES. REMOVED AND INSTALLED SERVICEABLE AUTO PILOT MCP, SYS OPS CHECK GOOD IAW B737-900 AMM 22-11-34-000-801, 22-11-34-400-801 AND 22-11-34-740-801, SEE LOG PAGE 60289052 FOR MEL 22-99D SYSTEM IS CURRENTLY ON.