As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FO'S ALTITUDE INDICATOR WAS IN A CONSTANT 15 DEGREE RIGHT BANK AND 20 DEGREE PITCH UP. CAPTAINS FLIGHT DIRECTOR WAS GIVING ERRONEOUS INFORMATION AND AUTO PILOT WOULD NOT WORK AS WELL. RETURNED TO LAX. REINITIALIZED NUMBER TWO AHRS COMPUTER. REMOVED AND REPLACED NUMBER ONE AHC 85. GROUND TEST AND OPS CHECKS GOOD AT THIS TIME.