As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PFD 1 FAILED IN FLIGHT. MFD 1 FAILED 30 SEC LATER AND RECEIVED EFIS COMP INOP CAUTION MSG. RTU 1 FAILED ABOUT 30 MIN LATER. INTERROGATED MDC AND FOUND NUMEROUS FAULTS FOR BOTH IOC BUSSES GOING TO PFD 1 AND MFD 1, RTU 1. REPLACED BOTH HIRF CARDS IN IAPS CAGE IAW MM 22-12-08. OPERATIONAL CHECK GOOD. P/N: 822-0287-201 S/N OFF: 1GN5KP/N: 822-6332-201 S/N OFF: 1G8LC.