As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI, RIGHT TACH GENERATOR FAILED. AIRCRAFT RETURNED TO GATE. PLANE WAS FERRIED TO HYANNIS FOR MAINTENANCE. MAINTENANCE REMOVED AND REPLACED THE RIGHT TACH GENERATOR AND RETURNED THE AIRCRAFT TO SERVICE. MAINTENANCE NOTED THAT THE REMOVED UNIT WAS DISCOLORED AND THE LABEL SHOWED SIGNS OF HEAT STRESS. (M)