Hugh Thompson, an Army helicopter pilot who rescued Vietnamese civilians during the My Lai massacre, reported the killings to his superior officers in a rage over what he had seen, testified at the inquiries and received a commendation from the Army three decades later, died yesterday in Alexandria, La. He was 62.

The cause was cancer, Jay DeWorth, a spokesman for the Veterans Affairs Medical Center where Mr. Thompson died, told The Associated Press.

On March 16, 1968, Chief Warrant Officer Thompson and his two crewmen were flying on a reconnaissance mission over the South Vietnamese village of My Lai when they spotted the bodies of men, women and children strewn over the landscape.

Mr. Thompson landed twice in an effort to determine what was happening, finally coming to the realization that a massacre was taking place. The second time, he touched down near a bunker in which a group of about 10 civilians were being menaced by American troops. Using hand signals, Mr. Thompson persuaded the Vietnamese to come out while ordering his gunner and his crew chief to shoot any American soldiers who opened fire on the civilians. None did.