(AP) – The husband of a Missouri woman killed in a medical helicopter crash says in a lawsuit that the helicopter’s operator took unnecessary risks by flying with low fuel.

Victor Tacoronte filed a lawsuit Thursday in Clay County Circuit Court. His wife, Terry Tacoronte, died last week when the helicopter crashed while she was being flown Bethany to a hospital in Liberty.

The helicopter pilot and two medical personnel also died in the crash.

The lawsuit names Air Methods Corp. of Englewood, Colo., LifeNet Air Medical Services and Heartland Regional Medical Center.

Federal aviation officials say shortly before the crash the pilot indicated he wanted to stop for fuel at an airport near Excelsior Springs.