RTCA may refer to:
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Radio Technical Commission for Aeronautics
RTCA, Inc. (formerly known as Radio Technical Commission for Aeronautics) is a United States non-profit organization that develops technical guidance for use by government regulatory authorities and by industry. It was founded in 1935 and was re-in ...
, an organisation that develops aviation standards
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Rio Tinto Coal Australia, an Australian coal mining company
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Radio and Television Correspondents Association, an organization for political reporters in Washington, D.C.
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