As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH AUTOPILOT ON - IN MAN MODE/HDG SEL INGAGED USING HDG BUG TO TURN AND CLIMB AT SAME TIME - A/C BANKED 30 DEG AND THE PITCH WOULD TEMPORARILY BECOME ERRATIC PITCHING UP THEN DOWN +/- 5-7 DEG. RE RACKED PITCH CHANNEL SYSTEM. OPS GOOD WITH COMPANY EQUIPMENT IAW 22-11-01. STATUS-CLOSED.