What was found
DUL - THE CREW ELECTED AN AIR TURNBACK AFTER THE NR 2 VSI FAILED. FOLLOWING AN UNEVENTFUL LANDING, MAINTENANCE REPLACED THE UNIT WHICH TESTED SATISFACTORILY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DUL - THE CREW ELECTED AN AIR TURNBACK AFTER THE NR 2 VSI FAILED. FOLLOWING AN UNEVENTFUL LANDING, MAINTENANCE REPLACED THE UNIT WHICH TESTED SATISFACTORILY.