Feb 28 (Reuters) - Virgin Australia Holdings Ltd
* Says "given the uncertain economic environment we are unable to provide guidance for the remainder of the 2014 financial year at this time"
* Says "the result reflects the tough trading conditions across the entire industry for the first half of financial year 2014"
* FY 2014 half year pre-tax loss of A$49.7 million
* Source text for Eikon
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