A single-engine plane crashed off California 49, killing all four people aboard, Calaveras County sheriff’s deputies said. The plane that crashed between Mokelumne Hill and San Andreas was piloted by Charles R. Drago, 49, of Cameron Park. Deputies identified the other victims as his daughter, Toni Marie Drago, 21, and her boyfriend, Richard Tuttle, 25, both of Livermore, and the elder Drago’s nephew, 17-month-old Cory Rowland. The plane apparently stalled before plunging to the ground, witnesses said. Cause of the crash was under investigation.