As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)AFTER START UP THE PILOT OBSERVED NO INDICATION FROM THE TACHOMETER AND THE ENGINE WAS SHUTDOWN. INVESTIGATION REVEALED THAT THE TACH HEAD HAD SEIZED. A NEW MECHANISM WAS INSTALLED AND THE AIRCRAFT WA S RETURNED TO SERVICE. SUBMITTER NOTES THAT THIS IS THE SECOND OCCURRENCE ON THIS AIRCRAFT.