What happened
The pilot and passenger had flown to Lake Havasu to visit relatives and friends who were vacationing on a houseboat. Witnesses on the scene reported observing N3999W approaching at a low altitude and circling a specific point on the lake. According to these witnesses, the aircraft was in a right bank and underwent a gradual descent during its turns until the airplane impacted the water.
The investigation
An examination of the pilot's logbook showed that he had accumulated approximately 195 hours of total flight time. Additionally, a toxicology report conducted on the passenger revealed the presence of cocaine and elevated levels of antihistamines in both blood and tissue samples.