During 2011, 4,000 such seals will be produced in the press shop at Newtownards, which has 17 power presses rated from 35 to 500 tonnes force for subcontract production runs of progression and deep drawn components. The contract has boosted the proportion of aerospace sector work done by Crossen Engineering to 20 per cent of turnover. The company received AS9100 quality management accreditation in 2010 and intends to grow the aerospace side of its business further to 75 per cent by 2015. Another recent aerospace project, for University of Ulster spin- o, LenisAer, Belfast, was to design a press tool for forming a sector for an engine nacelle lip skin from a sheet metal blank, currently aluminium but perhaps also titanium. The concept, to extend the trailing edge, promote laminar ow and

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