As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKEOFF, THE N2 GAS PRODUCER INDICATOR WENT TO ZERO AND ENGINE OUT LIGHT AND WARNING HORN ACTIVATED. THE TOT AND N2 ENGINE INDICATOR AND ROTOR TACHOMETER INDICATOR APPEARED NORMAL. AIRCRAFT LANDED OK. FOUND TACHOMETER GENERATOR SHAFT SHEARED. REPLACED.