A three-mile-high column of ‘light and mist’ planned to mark the London 2012 Olympics may be scrapped amid fears for the safety of pilots.
The Civil Aviation Authority (CAA) has ordered an investigation into the £500,000 installation at Wirral Waters on Merseyside because it may limit visibility.
The column will be visible for up to 60 miles and is thought to be prominent in the flight path of passenger airliners using Liverpool John Lennon Airport.
Planning permission will not be granted until tests are carried out in co-operation with Wirral Borough Council to ensure their are no risks to air travel.
The artwork, entitled Column, was designed by New York-based British artist Anthony McCall and the project has been plagued by difficulties since the bid began in October.