Incident Overview
During an instrument flight rules (IFR) flight, the pilot observed a gradual decline in electrical power. The cause was a faulty voltage regulator. In response, the pilot requested a routing change from the Air Route Traffic Control Center (ARTCC) with the intention of landing at an airport.
Approach and Go-Around
According to the pilot, he circled over the airport until receiving a green light from the air traffic control (ATC) tower, indicating clearance to land. However, while on final approach, the pilot received a red light from the tower. He then initiated a go-around maneuver and began a second approach shortly thereafter.
Second Approach and Landing
During the second landing approach, the airplane made a gear-up landing. When asked whether he utilized the emergency gear extension system, the pilot stated that he did not because he thought he felt the landing gear drag.