Southwest 737-300. Photo: By Rob Finlayson. Southwest Airlines said Tuesday it is this week commencing Required Navigation Performance procedures for approaches at 11 airports, asserting that "these new efficient flight procedures and enhanced avionics" will save the LCC $16 million annually. It added that full implementation of RNP at all airports SWA serves would lead to more than $60 million in reduced costs annually. SWA in 2008 announced at Air Transport World's ...

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