At about 09:45 PDT, a Piper Arrow crashed into trees near Bass Lake. The pilot and his three passengers were killed. The pilot had said he was going to take family members on a photo flight. At about 09:30, the aircraft flew first east then west at about 1,000 feet over Bass Lake. A witness said he saw the airplane flying about 100 feet above 100-foot-tall trees. He said the engine was running smoothly, then the power increased, followed by the sound of impact.