Low altitude maneuvering, including stall, spin, or controlled flight into terrain (CFIT).

Bottom line

Loss of control in-flight is an accident caused by the pilot not maintaining control of the airplane, and many LOC-I accidents result from stalls, spins, or accelerated maneuvers. Controlled flight into terrain often results from continued VFR flight into areas with a low ceiling or low visibility, flight at night, or incorrect interpretation of a chart. The most important stall recovery step is to reduce the angle of attack; after the stall warning is eliminated, roll the wings level and add power as needed.