Pilatus DC-21 (R) comes into land over a Pilatus PC-12 ahead of the Farnborough Airshow 2012 in southern England July 8, 2012. Airbus and Boeing head into next week's Farnborough Airshow locked in their fiercest market share battle for up to a decade, slashing prices to win key orders for their latest narrow body jets and storing up potential trouble for future profit margins. REUTERS/Luke MacGregor (BRITAIN - Tags: TRANSPORT BUSINESS)