High hopes for Bombardier C-series
19 June 2013 Last updated at 10:16 BST
The chief of Canadian Bombardier, Pierre Beaudoin, has said the company's new C-series of regional jets could boost revenues by as much as a quarter.
The company claims it will be the most advanced plane of its kind in the 100 to 150 seat category.
From the Paris Air Show, the BBC's Europe business correspondent Nigel Cassidy reports.