What was found
DURING FLIGHT, RIGHT HSI INOP. SCREEN IS BLACK. AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED RIGHT EHSI, SYSTEM OPS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING FLIGHT, RIGHT HSI INOP. SCREEN IS BLACK. AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED RIGHT EHSI, SYSTEM OPS GOOD.