M-20 F Executive 21
Flight Crew Private
Flight Crew Last 90 Days 29.3; Flight Crew Total 384.8; Flight Crew Type 302.4
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; Flight Crew Diverted; General Maintenance Action; General Flight Cancelled / Delayed
Aircraft
Approximately 1 hour 40 minutes into flight; during cruise; there was an over voltage indication. While trouble shooting the issue; there was a pop noise and a puff of smoke from the right side under the glare shield. The smoke did not continue on after the initial pop. [Advised ATC]; shed all non essential electric load; pulled the alternator CB; received vectors toward closest airfield and landed safely. Landing gear; flaps; and boost pump all worked normal with battery power.
M20 pilot reported diverting due to an alternator failure.