Incident Description
As the pilot lowered the landing gear, a total electrical failure occurred. The pilot could not recall whether a gear down and locked indication was observed. He attempted to reset the alternator/voltage regulator circuit breaker without success.
Landing and Damage
During the landing, the main landing gear collapsed, while the nose landing gear remained down and locked. The airplane skidded off the runway, resulting in damage to the left horizontal stabilizer forward and aft spars.
Postaccident Examination
A postaccident examination by a repair facility, later confirmed by the manufacturer, disclosed that the generator control unit (GCU) had failed.