As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSY - 221 - AIRCRAFT AT GATE, THE STANDBY HORIZONTAL INDICATOR WENT INOPERATIVE AND THE AIRCRAFT STOOD ON GROUND FOR MAINTENANCE. TECHNICIANS REPLACED AND TEST THE STANDBY HORIZONTAL PER AMM 34-22-24. RESULTS WERE SATISFACTORY AND THE AIRCRAFT RETURNED TO NORMAL OPERATION. (M)