As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT WILL NOT BANK GREATER THAN 10 DEGREE WITH GPS 1 OR 2 IN AUX NAV. ALL LATERAL MODES FUNCTION NORMALLY. R&R ROLL CHANNEL COMPUTER PER DC8 M/M REF 22-12-1. OPS CKS SERVICABLE. P/N OFF 2588788-905, S/N OFF 1180385. P/N ON 2588788-905, S/N ON 1070200.