As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON THE CLIMB OUT ON A ROUTINE FLIGHT, THE CO-PILOT REPORTED THE RH HSI IMAGE BECAME DISTORTED AND UNREADABLE. THE CAPTAIN FLEW THE AIRCRAFT FOR THE REMAINED OF THE FLIGHT HOME FROM THE LH SIDE WITH OUT INCIDENT. MAINTENANCE REPLACED THE HPU UNIT AND THE SYSTEM GROUND FUNCTION CHECKED SERVICEABLE.