Mast bumping is a critical aerodynamic hazard associated with two-bladed, semi-rigid main rotors (prominently in Robinson and certain Bell helicopters), occurring when the main rotor is "unloaded" ...

Like many machines, helicopters can experience malfunctions and other equally dangerous issues. Among these is mast bumping, where the rotor hub pivots so much it hits the mast. If you think this ...

The tourist helicopter that crashed into the Hudson River on Thursday afternoon appears to have fallen victim to a well-known hazard known as “mast bumping,” according to aviation experts. Eyewitness ...

The pilot of the tourist helicopter that crashed into the Hudson River on Thursday afternoon could not have done anything to save himself or his five passengers after the aircraft’s rotor blades and ...