As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS UNIT WAS SENT TO MAKE THIS INSTRUMENT NVG COMPATIBLE. WHEN THEY CHECKED OUT THE UNIT THEY FOUND THE FOLLOWING PROBLEM: THE RT POINTER IS INOP, DUE TO COIL WIRE BROKEN FROM METER. RT POINTER WILL NOT CALIBRATE DUE TO HAIRSPRING BEING DEFORMED. GAUGE WILL BE REPLACED WITH A SERVICEABLE ONE.