The International Civil Aviation Organisation’s tough interim separation distances for the A380 could remain in place for another two years, despite Airbus’s earlier hopes that the limits would be relaxed by the end of 2007.

Following ICAO’s interim recommendations in October 2006 that the distance between the A380 and other aircraft should be greater than the standard for other large or “heavy” category aircraft, the airframer has been undertaking extensive back-to-back flight trials with other aircraft to prove the advice was too conservative.

Airbus had planned to submit its detailed wake vortex data to ICAO for analysis in September 2007, and was confidently predicting that revised distances similar to those required for the Boeing&n

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