As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON ROUTINE SCHEDULED MAINTENANCE INSPECTION IT WAS FOUND ON RUN-UP THAT THE VACUUM INDICATOR WAS FLUXUATING BACK AND FORTH. ON FURTHER INSPECTION IT WAS FOUND THAT THE PLASTIC FITTING ATTACHED TO THE BACK OF THE GAUGE HAD CRACKED. GAUGE WAS REPLACED WITH NEW.