As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROC - FLT 1886 - AFTER TAKEOFF, CREW REPORTED LOSING HEADING INDICATOR. CREW ACCOMPLISHED SPECIAL PROCEDURES, BUT FAILED TO REST. CAPTAIN ELECTED TO RETURN TO FIELD AT ROC. FLIGHT LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE ALIGNED IRS SYSTEM. OPERATIONAL CHECKED GOOD. NO FURTHER ITEMS. (X)