As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAINS HSI AND ADI BOTH BLANKED DURING DESCENT STAYED BLANK UN TIL AFTER LANDING REPLACED LEFT SYMBOL GENERATOR, CHK OK PER MM 34-22-01. PARTS USED: 75-4182-9-0001,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1839858 SN OFF 3911 COMPUTER, EFIS OFF 75-4182-9-0001 3911 ON 75-4182-9-0001 4799