LEGAL action might be launched against US suppliers of Australia's troubled Super Seasprite helicopter now grounded with technical problems, the Government said today. The Australian navy bought 11 of the helicopters from US defence contractor Kaman Aerospace for $1 billion in 1997, but the Seasprites have been plagued by technical problems and have never been fully operational. Defence Minister Brendan Nelson said today he had banned the Seasprites from flying because of the latest difficulties, software and technical problems. "I have asked the Department of Defence to consider all options including, if appropriate, legal action against the contractors who have...