As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT MALFUNCTION - LEVEL AT 41000 MSL, THE AUTOPILOT AGGRESSIVELY PITCHED UP TO OVER 1000 FPM. THE AUTOPILOT WAS DISCONNECTED. AFTER 1 MINUTE, THE AUTOPILOT WAS RECONNECTED AND PROBLEM REOCURRED. REMOVED FAULTY LT SIDE PITOT STATIC PORT HOSE AND NR 1 VERTICAL GYRO (FAULTY) INSTALLED NEW HOSE AND REPAIRED VG. PERFORMED PITOT STATIC SYSTEM LEAK TEST GOOD. PERFORMED OPERATIONAL CHECK GOOD