How many helicopters were used during the filming of the tv series mash?

During the filming of the TV series "MAS*H," a total of 11 helicopters were used, primarily the Bell UH-1 Iroquois, commonly known as the "Huey." The series featured these helicopters for various scenes, including medical evacuations, which were integral to the show's depiction of the Korean War. The helicopters were often flown in and out of scenes to enhance the realism of the setting.