As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS MODEL OF TURN AND SLIP INDICATOR HAS A HIGH FAILURE RATE. (BOTH THE PILOT'S AND COPILOT'S USE THE SAME INDICATOR.) SUBMITTER STATES CHANGED 6 UNITS SINCE THE FIRST OF THE YEAR. THE HIGH TIME UNIT HAS 45 HOURS ON IT SINCE OVERHAUL, MOST HAD LESS.