What was found
FLIGHT 4477 PIT-IPT. DURING FLIGHT THE RT EHSI SCREEN WENT BLANK. A/C RETURNED TO PIT FOR REPAIR
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 4477 PIT-IPT. DURING FLIGHT THE RT EHSI SCREEN WENT BLANK. A/C RETURNED TO PIT FOR REPAIR