In lift servicing major repair is strap once belt in lift falls down people using this lift would fall down in land and injuries and death are easily possible, because from fifty feet height any object falls with weight injuries are unavoidable, same time, if lift struck at a place and it is not moving up and it is not moving down, high risk for users, because only repair technician could bring the lift down to a floor and release the arrested people in the lift due to defect.
http://www.jdrliftservices.co.uk/