Aviation accident ERA21LA170

Improper maintenance of the airplane by its owners and their failure to have qualified maintenance personnel determine the root cause of water infiltration into the fuel system. Also causal was the pilot’s inadequate preflight inspection, which failed to remove all of the water contamination from the fuel system prior to the flight and resulted in the partial loss of engine power during the takeoff. Contributing was the pilot’s exceedance of the critical angle of attack, which resulted in an aerodynamic stall and subsequent hard landing.