What was found
VACUUM PUMP FAILURE INFLIGHT - FIRST NOTICED ATTITUDE CHANGE (STARTED DECENDING RAPIDLY) (AUTOPILOT ENGAGED)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
VACUUM PUMP FAILURE INFLIGHT - FIRST NOTICED ATTITUDE CHANGE (STARTED DECENDING RAPIDLY) (AUTOPILOT ENGAGED)